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Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:IncomeTaxesPaidNet
us-gaap:LongtermDebtType
us-gaap:InterestExpense

us-gaap:InterestExpenseDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:InterestExpenseLongTermDebt
us-gaap:LongtermDebtType

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:AirlineDestinations
us-gaap:ProductOrService

us-gaap:SellingAndMarketingExpense

us-gaap:Assets

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:CumulativeEffectPeriodOfAdoption
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent
save:RightOfUseAssetType

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtAndCapitalLeaseObligations
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OperatingLeaseLiabilityNoncurrent
save:RightOfUseAssetType
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
save:RightOfUseAssetType
us-gaap:OperatingLeaseLiability
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:CumulativeEffectPeriodOfAdoption
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:InvestmentType

us-gaap:TreasuryStockValue

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsValuationAllowance

save:AmortizationOfDeferredGainsAndLossesFromSaleLeasebackTransactionsandDebtIssuanceCosts
us-gaap:UnusualOrInfrequentItem
save:CapacityReductionComparedToPriorYear

save:CapacityReductionInCurrentYearComparedToPriorYear
us-gaap:StatementScenario
us-gaap:UnusualOrInfrequentItem

save:ContractWithCustomerLiabilityRefundsIssued
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:DebtInstrumentConvertibleLiquidationPreferenceDuringPeriodValue

save:DerivativeInstrumentsLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortionTax

save:EffectiveIncomeTaxRateReconciliationExcludingDiscreteTaxBenefitPercent
us-gaap:UnusualOrInfrequentItem
save:EmployeeRetentionCreditsDueToCOVID19

save:EmployeeTaxCreditsDueToCOVID19
us-gaap:StatementScenario
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:ExtinguishmentOfDebtWriteOffOfTheRelatedOriginalIssuanceDiscount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:ExtinguishmentOfDebtWriteOffRelatedDeferredFinancingCosts

save:FederalFuelTaxSavingsDueToCOVID19

save:GainLossReclassifiedFromOtherComprehensiveIncomeNoncashAdjustment

save:IncreaseDecreaseInNoncurrentDepositAssetsAndOtherAssets

save:IncreaseDecreaseInPrepaidMaintenanceReserves
us-gaap:InvestmentType
save:InterestIncomeWeightedAverageFixedRate
us-gaap:SubsequentEventType, us-gaap:UnusualOrInfrequentItem
save:InvoluntaryTerminatedEmployeesReductionDueToVoluntaryLeaveProgramPercent
us-gaap:UnusualOrInfrequentItem
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:NumberOfConsecutiveDaysRequiredForTradingDaysForConversionPriceThreshold
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:NumberOfTradingDaysRequiredForConversionPriceThreshold

save:OperatingLeaseObligationsIncurred

save:OtherComprehensiveIncomeLossSecuritiesAvailableForSaleCashAndCashEquivalentsUnrealizedHoldingGainLossArisingDuringPeriodAfterTax

save:OtherComprehensiveIncomeLossSecuritiesAvailableForSaleCashAndCashEquivalentsUnrealizedHoldingGainLossArisingDuringPeriodTax
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:PaymentForDebtExtinguishmentAccruedInterestPaid
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:PaymentForDebtExtinguishmentPremiumPaid

save:PaymentsForPreDeliveryDepositsForFlightEquipmentNetOfRefunds

save:PaymentsToAcquirePropertyPlantAndEquipmentExcludingConstructionInProcess
us-gaap:StatementScenario, us-gaap:UnusualOrInfrequentItem
save:ProceedsExpectedFromGovernmentAssistance
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:ProceedsExpectedFromPayrollSupportProgram
us-gaap:UnusualOrInfrequentItem
us-gaap:StatementScenario
save:ProceedsFromPayrollSupportProgram
us-gaap:UnusualOrInfrequentItem
save:ProceedsFromPayrollSupportProgramRecordedAsDeferredPayrollLiability
us-gaap:UnusualOrInfrequentItem
save:ProceedsFromPayrollSupportProgramRecordedAsSpecialCredits
us-gaap:UnusualOrInfrequentItem
save:ProceedsReceivedFromGovernmentAssistance
us-gaap:SubsequentEventType, us-gaap:UnusualOrInfrequentItem
save:ProceedsReceivedFromPayrollSupportProgram
us-gaap:UnusualOrInfrequentItem

save:ProvisionForDoubtfulAccountsNetOfRecoveries

save:Reimbursementforairportconstruction

save:RepaymentsofCapitalLeaseObligations
us-gaap:UnusualOrInfrequentItem
save:SeveranceCostsAndCostsForVoluntarySeparations

save:SpecialChargesCredits
us-gaap:UnusualOrInfrequentItem

save:StockAndWarrantsIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

save:TaxLossCarrybacksDueToCOVID19

us-gaap:AccretionExpense
us-gaap:LongtermDebtType

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued
us-gaap:StatementEquityComponents
us-gaap:UnusualOrInfrequentItem

us-gaap:AircraftMaintenanceMaterialsAndRepairs

us-gaap:AircraftRental

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:CapitalLeaseObligationsIncurred
us-gaap:CollectiveBargainingArrangement, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ExtinguishmentOfDebtAmount

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FuelCosts

us-gaap:GainLossOnDispositionOfAssets

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInDeferredCharges

us-gaap:IncreaseDecreaseInDepositOtherAssets

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInPrepaidTaxes

us-gaap:InterestCostsCapitalizedAdjustment

us-gaap:InterestCostsIncurred

us-gaap:InterestPaidCapitalized

us-gaap:InvestmentIncomeInterest

us-gaap:LaborAndRelatedExpense

us-gaap:LandingFeesAndOtherRentals

us-gaap:LeaseCost

us-gaap:LineOfCreditFacilityCommitmentFeeAmount

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherOperatingActivitiesCashFlowStatement
us-gaap:UnusualOrInfrequentItem
us-gaap:OtherTaxExpenseBenefit

us-gaap:PaymentsForConstructionInProcess
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfDebtIssuanceCosts
us-gaap:SubsidiarySaleOfStock
us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsToAcquireMarketableSecurities
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ProceedsFromLinesOfCredit
us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:ProceedsFromOtherEquity

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:RepaymentsOfDebt
us-gaap:CollectiveBargainingArrangement, us-gaap:UnusualOrInfrequentItem
us-gaap:RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockConsiderationReceivedOnTransaction
us-gaap:StatementEquityComponents, us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction

us-gaap:ShortTermLeaseCost

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:VariableLeaseCost

save:AccruedAircraftMaintenanceLiabilitiesCurrent

save:AccruedAirportLiabilitiesCurrent

save:AccruedFuelCostsCurrent

save:AircraftMaintenanceDeposits

save:AircraftMaintenanceDepositsCurrent

save:AircraftMaintenanceDepositsNoncurrent

save:CashCashEquivalentsShortTermInvestmentsAndLineOfCreditFacilityFundsDrawnAndUndrawn
us-gaap:StatementScenario
save:ClassOfWarrantOrRightMaximumNumberOfSharesCalled

save:ContractWithCustomerLiabilityFrequentFlierProgramsCurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:DebtCovenantMinimumLiquidityRequirement
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:DebtInstrumentRedemptionMinimumAggregatePrincipalAmountOutstandingRequiredForRedemption

save:DeferredHeavyMaintenanceGross

save:DeferredMaintenanceCostsNoncurrent

save:DeferredPaymentOfEmployerPortionOfSocialSecurityTaxesFromCARESAct

save:DeferredTaxAssetsAccruedMaintenance

save:DeferredTaxAssetsDeferredManufacturingCredits

save:DeferredTaxAssetsLeaseLiability

save:DeferredTaxAssetsNondeductibleReservesandAccruals

save:DeferredTaxLiabilitiesAccruedAircraftandEngineMaintenanceExpenses

save:DeferredTaxLiabilitiesConvertibleDebt

save:DeferredTaxLiabilitiesLeaseRightOfUseAsset

save:EmployeeRelatedLiabilitiesCurrentPayrollSupportProgramGrant

save:FederalExciseAndOtherPassengerTaxesAndFeesPayableCurrent
us-gaap:UnusualOrInfrequentItem
save:FederalNetOperatingLossCarryback

save:FinanceAndOperatingLeasesLiability

save:FinanceAndOperatingLeasesLiabilityCurrent

save:FinanceAndOperatingLeasesLiabilityNoncurrent

save:FinanceAndOperatingLeasesLiabilityUndiscountedExcessAmount

save:FinanceLeaseLiabilityToBePaidAfterYearFour

save:FlightVouchersPledgedForMinorityOrganizationsDueToCOVID19Value

save:LesseeFinanceAndOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
us-gaap:BalanceSheetLocation, us-gaap:UnusualOrInfrequentItem

save:LesseeFinanceAndOperatingLeaseLiabilityToBePaidYearOne

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDue

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueAfterYearFive

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearFive

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearFour

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearThree

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearTwo

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidAfterYearFour

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearFour

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearOne
us-gaap:BalanceSheetLocation, us-gaap:UnusualOrInfrequentItem

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearThree

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearTwo
save:RightOfUseAssetType
save:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour
us-gaap:AircraftType, us-gaap:CounterpartyName
save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFive
us-gaap:AircraftType, us-gaap:CounterpartyName
save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFour
us-gaap:AircraftType, us-gaap:CounterpartyName
save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredRemainderOfFiscalYear
us-gaap:AircraftType, us-gaap:CounterpartyName
save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFive
us-gaap:AircraftType, us-gaap:CounterpartyName
save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFour
us-gaap:AircraftType, us-gaap:CounterpartyName
save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearOne
us-gaap:AircraftType, us-gaap:CounterpartyName
save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearThree
us-gaap:AircraftType, us-gaap:CounterpartyName
save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearTwo

save:LesseeShorttermOperatingLeaseRemainderofFiscalYear
us-gaap:CreditFacility, us-gaap:LongtermDebtType
save:LettersofCreditLimitAmount

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFive
us-gaap:LongtermDebtType
save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFour
us-gaap:LongtermDebtType
save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidRemainderOfFiscalYear

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFive

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour
us-gaap:LongtermDebtType

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne
us-gaap:LongtermDebtType

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree
us-gaap:LongtermDebtType

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo
us-gaap:LongtermDebtType

save:LongTermDebtMaturityAfterYearFour

save:MaximumPotentialExposureToCashHoldbacksFromCreditCardProcessors
us-gaap:UnusualOrInfrequentItem
save:NumberOfEmployeesOnVoluntaryLeaveReturnedToWorkPercent
us-gaap:DebtInstrument
save:NumberOfWarrantsIssuedAsAPercentOfOutstandingCommonStock
us-gaap:AircraftType, us-gaap:StatementScenario
save:NumberofAircraftwithSecuredDebtFinancingCommitmentsScheduledforDelivery
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:PrincipalAmountPortionForTradingPriceThreshold

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidAfterYearFour

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearFour

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearOne

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearThree

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearTwo
us-gaap:UnusualOrInfrequentItem
save:ProceedsFromPayrollSupportProgramRecordedAsDeferredSalariesWagesAndBenefits
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
save:RestrictedCashFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
save:SharesConversionRatePerPortionOfPrincipalAmount
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
save:UnrecordedUnconditionalPurchaseObligationToBePaidAfterYearFour

us-gaap:AccountsAndOtherReceivablesNetCurrent

us-gaap:AccruedRentCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:CapitalizedComputerSoftwareNet
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:CashCashEquivalentsAndShortTermInvestments
us-gaap:UnusualOrInfrequentItem
us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1

us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentConvertibleConversionPrice1
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:LongtermDebtType
us-gaap:StatementScenario, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:StatementScenario, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:DeferredFinanceCostsGross
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DepositsOnFlightEquipment

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs

us-gaap:FinanceLeaseLiability
save:RightOfUseAssetType

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount
save:RightOfUseAssetType
us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FlightEquipmentGross
us-gaap:UnusualOrInfrequentItem
us-gaap:IncomeTaxReceivable

us-gaap:IncomeTaxesReceivable

us-gaap:InterestPayableCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
save:RightOfUseAssetType, us-gaap:BalanceSheetLocation, us-gaap:UnusualOrInfrequentItem
save:RightOfUseAssetType
us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:ProductOrService
us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:CreditFacility
us-gaap:LinesOfCreditCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:LongTermDebtFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtWeightedAverageInterestRate
us-gaap:LongtermDebtType

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards

us-gaap:PropertyPlantAndEquipmentOther
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:PropertyPlantAndEquipmentSalvageValuePercentage
us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalents
us-gaap:RestrictedCash

us-gaap:RestrictedCashCurrent
us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockPricePerShare
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
save:RightOfUseAssetType
us-gaap:ShortTermLeaseCommitmentAmount
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear
us-gaap:UnusualOrInfrequentItem
us-gaap:WarrantsNotSettleableInCashFairValueDisclosure

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Liability Noncurrent
Assets
Operating Lease Right Of Use Asset
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Liabilities Current
Current Liabilities
Other Accrued Liabilities Current
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Income Loss
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Diluted Shares Outstanding
NonoperatingIncomeExpense
Nonoperating Income Expense

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:CommonStockValue ▂▂▂██▁▁▁▁▁▁▁▁▁▁▁▁▁0.0110.010.010.0280.0270.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.007
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁105.25897.775NA92.73179.60168.521NA68.54568.6268.516NA68.50368.3168.222NA69.45869.56169.592
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁105.25897.775NA92.73179.60168.521NA68.44268.43968.38NA68.25468.25168.222NA69.3769.3769.348
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount NANANA3.7110.5650.482NA0.1360.1270.159NA0.0050.2480.324NA0.1240.0170.088
us-gaap:EarningsPerShareBasic ▁▃▂▃▂▄▅▅▆▅▅▆▄▃█▅▅▅-2.73-1.15-1.61-1.07-1.81-0.411.191.221.670.821.351.430.16-0.663.640.871.130.46
us-gaap:EarningsPerShareDiluted ▁▃▂▃▂▄▅▅▆▅▅▆▄▃█▅▅▅-2.73-1.15-1.61-1.07-1.81-0.411.181.221.670.821.341.420.16-0.663.630.871.120.46
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 TTM Greenblatt ROC _ _▇▃▂▃▁▄▇▇█▆▇█▇▄▇▇▇▆93.211-102.53-159.915-99.471-190.384-57.992124.624124.681163.93887.804136.065145.125108.521-38.79792.546104.104132.73659.405
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▁▃▃▃▃▄▆▆▆▅▆▆▅▄█▆▆▅-287.838-112.269-157.314-99.253-144.362-27.60281.30283.453114.65356.25391.96697.52511.416-44.887250.0760.25678.18531.975
us-gaap:GainsLossesOnExtinguishmentOfDebt -331.63NANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive,us-gaap:ConvertibleDebt-36.4NANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType save:FourPointSevenFivePercentConvertibleSeniorNotes,us-gaap:ConvertibleDebt-295.2NANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▁▃▂▃▂▄▇▇█▇██▆▅▇▇█▆-273.31-138.181-204.534-128.52-212.536-74.594106.763109.013148.56972.081120.902128.58715.149-59.66281.74494.78124.05651.822
us-gaap:IncomeTaxExpenseBenefit ▇▆▅▆▄▅▇▇█▇▇█▇▆▁██▇14.553-25.86-47.23-29.38-68.108-46.76625.54925.54934.06816.00528.96531.1073.895-14.74-165.23134.5945.91319.887
us-gaap:IncomeTaxesPaidNet █▁██▇█▇███▃███████0.408-109.0560.8690.972-18.134-1.497-2.4450.8946.5780.816-76.8550.0962.5910.6791.4740.0121.4592.881
 us-gaap:InterestExpense us-gaap:LongtermDebtType us-gaap:SecuredDebt▆██▂▁13.217.017.02.51.1NANANANANANANANANANANANANA
us-gaap:InterestExpenseDebt ▆▇█▅▄▃▄▃▃▃▃▃▃▂▂▁▁▁39.66244.80649.41533.43527.79223.87825.97525.13825.26624.97123.58821.9120.47817.80316.04114.99613.72712.388
 us-gaap:InterestExpenseLongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive,us-gaap:SecuredDebt▁█13.54117.434NANANANANANANANANANANANANANANANA
 us-gaap:InterestExpenseLongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType save:PayrollSupportProgramCARESAct,us-gaap:UnsecuredDebt█▁0.2820.199NANA0.057NANANANANANANANANANANANANA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:EquipmentNotesSeriesA20151▁▂▂▃▂▃▃▄▄▅▅▆▆▇▇██3.1783.2753.343.4383.4033.5493.63.7473.7093.8383.9244.0574.0154.1424.2354.3664.321NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:EquipmentNotesSeriesA20171▇▇▇▇▇██████▇▆▃▁▁▁0.6340.6330.6520.6660.6730.680.6950.7110.720.7170.7270.6310.5680.2460.0190.00.0NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:EquipmentNotesSeriesAA20171▇▇▇▇▇██████▇▆▃▁▁▁1.7591.7551.8081.8491.8681.8871.9281.9731.9971.9892.0181.7511.5760.6820.0540.00.0NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:EquipmentNotesSeriesB20151▁▂▂▂▂▃▃▄▄▄▅▅▅▆▇██0.6640.7050.7190.760.7520.7950.8070.850.8410.880.90.9390.931.0121.0361.1181.108NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:EquipmentNotesSeriesB20171▆▆▆▆▇▇▇▇███▇▇▄▁▁▁0.5560.5570.5750.6030.6230.6440.6710.7080.7370.7540.7840.70.6540.2830.0220.00.0NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:EquipmentNotesSeriesC20151▆▆▆▇▇▇▇▇▇███▅▁▁▁▁0.9971.0561.081.1381.1381.2091.2231.2791.281.3351.3661.420.7890.00.00.00.0NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:EquipmentNotesSeriesC20171███████████▇▄▁▁▁▁1.0921.081.0911.1041.0921.0921.0921.1041.0921.081.0780.9340.4660.00.00.00.0NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:FinanceLeaseObligations▁▁▁▁▁▃▁▁█▁0.0240.0240.0260.0290.0270.1130.0320.0370.3090.029NA0.0160.0180.021NANANANA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType save:FixedRateLoan▁█10.74610.903NA8.5168.217.6136.6776.5176.4326.2024.9794.8444.8814.9114.0552.8111.586NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType us-gaap:ConvertibleDebt▁▂██▃1.7492.0785.8845.8833.138NANANA0.0NANANANANANANANANA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType us-gaap:RevolvingCreditFacility▄▆▇▇█▆▇██▇▅▁▁▁0.5621.171.3631.4031.4561.1591.3261.4931.5591.4130.7930.00.00.0NANANANA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType us-gaap:SecuredDebtNANA17.4352.518NANANANANANANANANANANANANANA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType us-gaap:SeniorLoansNANA35.6322.5452.6012.8133.5933.8093.8783.9454.14.1954.2574.3174.4744.5644.619NA
 us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType us-gaap:UnsecuredDebtNANA0.1830.1690.057NANANA0.0NANANANANANANANANA
us-gaap:InterestPaidNet ██▅▄▄▄▄▄▅▄▆▄▂▂▃▁▃▁39.48340.20624.71418.48719.93417.70220.41418.56122.11219.16729.14619.2088.28.56915.3615.67212.9263.943
us-gaap:NetIncomeLoss ▁▃▃▃▃▄▆▆▆▅▆▆▅▄█▆▆▅-287.863-112.321-157.304-99.14-144.428-27.82881.21483.464114.50156.07691.93797.4811.254-44.922250.33860.1978.14331.935
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█-287.863-112.321NA-99.14-144.428-27.828NA83.464114.50156.076NANANANANANANANA
us-gaap:NonoperatingIncomeExpense ▁▇▇█████████▆█████-366.521-35.651-44.619-29.049-22.152-16.602-17.861-15.668-15.369-15.723-15.163-16.538-93.372-20.865-9.552-9.324-8.68-7.583
us-gaap:OperatingCostsAndExpenses ▇▄▅▃▁████▇766.098563.809658.405501.393328.913829.073845.192867.287849.018767.992NANANANANANANANA
us-gaap:OperatingIncomeLoss ▇▃▂▃▁▄▇▇█▆▇█▇▄▇▇▇▆93.211-102.53-159.915-99.471-190.384-57.992124.624124.681163.93887.804136.065145.125108.521-38.79792.546104.104132.73659.405
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▆▅▃▆█▆▅▇▇▅▅▇▅▁▆▅▅0.0250.052-0.01-0.1130.0660.2260.088-0.0110.1520.1770.0290.0450.1620.035-0.2680.0660.0420.04
us-gaap:OtherNonoperatingIncomeExpense ▁█-0.2330.052NA-0.077-0.0660.019NA-0.222-0.144-0.233NANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▇▄▄▃▁▆███▇▇▇▇▆▅▅▅▅859.309461.279498.49401.922138.529771.081969.816991.9681012.956855.796862.795904.33851.771704.138666.182687.227700.185590.0
us-gaap:SellingAndMarketingExpense ▇▄▄▃▁▆▇██▇▆▇▇▆▅▅▅▅35.26323.64222.08217.88211.35233.74338.28939.1640.60235.71933.50537.86834.99730.63128.1729.46929.90826.498
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:Assets ████▇▆▆▅▅▅▃▃▃▃▂▂▁▁8671.4838387.7358398.8258557.2947767.9447235.2617043.4126575.2146662.7816423.9395165.4574781.7314681.7254654.4314143.953870.9423674.3453438.614
us-gaap:LiabilitiesAndStockholdersEquity ████▇▆▆▅▅▅▃▃▃▃▂▂▁▁8671.4838387.7358398.8258557.2947767.9447235.2617043.4126575.2146662.7816423.9395165.4574781.7314681.7254654.4314143.953870.9423674.3453438.614
us-gaap:StockholdersEquity ▆▆▇██▇▇▆▆▅▅▄▃▃▄▂▂▁2180.8072092.9892249.6952404.1032343.1622234.3912261.3322180.0872095.0271977.6561928.5041833.7821733.5011719.8051777.0811570.5361508.2331428.346
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AssetsCurrent ▇▇▇█▄▁▂▂▃▃▂▁▁▂▂▂▁▁2388.4022276.0932355.982499.111667.961231.1651385.4431403.2821520.6871516.761345.4661206.1071230.3351298.8411280.261244.741230.5041146.531
us-gaap:CashAndCashEquivalentsAtCarryingValue ▇▇▇█▃▁▂▂▃▃▂▁▁▂▁▂▂▁1863.711774.4711789.7231947.6191127.46788.225978.957935.6781110.7971122.1391004.733773.71812.362898.457800.849863.68869.153818.11
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents █▇▇█▃▁▂▂▃▃▂1925.911838.4711861.1242002.4571157.46788.225978.957935.6781110.7971122.1391004.733NANANA800.849NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent █▇▇▇▇▆▅█▅▄▃▄▃▃▄▂▁▁132.038121.127124.983121.252126.051109.131103.439136.905102.95290.34683.38383.69279.78881.80683.69267.70757.79853.677
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇▇▆▆▅▅▄▃▃▃▃▂▂▂▁▁▁781.431731.308680.23631.685582.098537.928492.447450.195367.712369.405332.864296.157261.314235.532207.808183.065161.191140.535
us-gaap:PropertyPlantAndEquipmentNet ██████▇▆▇▆▆▅▅▅▃▂▂▁3832.2623816.833831.5683822.713810.4083733.0853530.3023333.6323362.1663154.7923116.0122906.082818.1032779.2972238.4681983.1471789.511604.55
us-gaap:OperatingLeaseRightOfUseAsset █▇▇▇▇▇▇▆▆▆▁1598.1371461.7431417.8231408.1061430.8971425.1711369.5551059.7661057.8461046.2620.0NANANANANANANA
us-gaap:OtherAssetsNoncurrent ▁▁▁▁▁▁▁▁▁▂▅▅▅▅█▇▇▇35.47835.44836.12735.89535.65935.76136.89740.11338.11843.22979.45679.44579.08182.56121.003112.085114.444114.509
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AccountsPayableCurrent ▇▃▂▃▄█▅▄▅▂▄█▆▃▁▂▃▄55.07233.19928.45436.06841.0662.94943.60141.91543.84826.71339.3263.1950.3131.67422.82230.96133.18639.612
us-gaap:ContractWithCustomerLiabilityCurrent █▆▄▄▅▄▂▃▄▄▂▂▃▃▁608.136509.172401.966429.892452.023411.286315.408361.218402.99403.001291.981323.627357.645357.193263.711NANANA
us-gaap:LiabilitiesCurrent █▇▆▆▆▅▄▄▅▅▂▂▃▄▁▁▁▁1601.1791508.081342.0221296.7031271.1821231.4861112.0441052.7761211.1631126.669834.535824.821900.2271047.326647.026662.984685.83673.174
us-gaap:LongTermDebtCurrent ▄▇██▆▇▄▃▃▃▃▂▂▂▂▁▁▁210.2356.0383.5372.8287.8334.4214.0193.7175.5172.3162.8150.2145.9136.5115.43105.95895.42892.672
us-gaap:OperatingLeaseLiabilityCurrent ██▇▇▇▇▇▇▇▇▁144.571135.26133.791130.793128.536125.713120.662117.376114.877128.1380.0NANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent █▆▅▇▅▇▆▅▄▄▄▃▄▃▃▃▃▁39.46834.16431.46935.11628.79336.97934.70629.24727.6226.77225.73623.36928.42222.68423.11723.78122.77217.639
us-gaap:OtherLiabilitiesCurrent █▇▅▄▁▃▅▄▅▅▄▂▄▅▂▁▁▁496.095473.826393.614326.65247.013296.607373.521337.685379.041395.404339.677287.142346.407378.178262.37249.132244.629231.932
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:LongTermDebt ▆▇██▁3285.93469.93580.53584.82664.8NANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ████▆▄▄▄▄▅▄▄▃▃▂▂▁▁3013.83047.43065.63073.62332.21964.41959.21967.62023.82038.12024.01770.51731.81570.9261387.4981214.1381089.159991.7
us-gaap:LongTermDebtAndCapitalLeaseObligations ████▄▂▂▂▂▂▂▁3014.9583048.3783066.6353074.92333.61965.5241960.4531968.9012025.1832039.6192024.7741770.904NANA1387.498NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▅▄▆▇██▆▆▄▃▃▂▁▁▂▅412.621398.097439.894486.487517.537505.263469.292446.94399.765366.854355.141332.119295.601292.888313.14406.08NANA
us-gaap:OperatingLeaseLiabilityNoncurrent █▇▇▇▇▇▇▆▆▅▁1422.1391290.81248.5191242.8431269.671268.111218.014915.977915.288895.0560.0NANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo save:RightOfUseAssetType save:AircraftAndSpareEngineLeases█▆▇▆▆▅▄▁▁▃219.274204.097209.911206.199205.231200.682192.539175.661172.409185.414NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo save:RightOfUseAssetType save:PropertyFacilityLeases▆▆▇▇▇█▅▁▁▁4.0083.9834.3974.3094.2624.5523.5322.4172.4172.394NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree save:RightOfUseAssetType save:AircraftAndSpareEngineLeases▇▃▇▆▆█▆▂▁▄197.212182.035197.267193.554192.586201.759193.616174.42171.168183.572NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree save:RightOfUseAssetType save:PropertyFacilityLeases▄▄▅▅▅█▅▂▁▁2.8192.8193.3833.3083.264.2623.2212.1311.9091.903NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour save:RightOfUseAssetType save:AircraftAndSpareEngineLeases▅▁▅▄▃█▆▅▄▅175.588160.411175.204171.492170.524189.115181.667176.203172.951175.571NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour save:RightOfUseAssetType save:PropertyFacilityLeases▁▁▆▆▆█▆▂▁▃1.061.062.7722.7722.7223.262.571.5281.081.562NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive save:RightOfUseAssetType save:AircraftAndSpareEngineLeasesNANA153.146NANA167.052159.668158.328155.076151.177NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive save:RightOfUseAssetType save:PropertyFacilityLeasesNANA1.06NANA2.7222.0461.1321.0551.055NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive save:RightOfUseAssetType save:AircraftAndSpareEngineLeasesNANA975.682NANA1019.499921.721617.315592.704477.187NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive save:RightOfUseAssetType save:PropertyFacilityLeasesNANA143.093NANA144.127138.6964.9384.9384.749NANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:StockholdersEquity ▆▆▇██▇▇▆▆▅▅▄▃▃▄▂▂▁2180.8072092.9892249.6952404.1032343.1622234.3912261.3322180.0872095.0271977.6561928.5041833.7821733.5011719.8051777.0811570.5361508.2331428.346
us-gaap:CommonStockValue ▂▂▂██▁▁▁▁▁▁▁▁▁▁▁▁▁0.0110.010.010.0280.0270.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.007
us-gaap:AdditionalPaidInCapitalCommonStock █▅▅▅▄▁▁▁▁▁▁▁▁▁▁▃▃▃1126.031750.359799.549796.553636.317383.186379.38379.354377.639374.896371.225368.451365.536363.23360.153557.772555.704553.82
us-gaap:RetainedEarningsAccumulatedDeficit ▁▄▄▆▇██▇▇▆▅▅▄▄▄▂▂▁1130.7541418.6171524.8781682.1821781.3221925.751955.1871873.9731790.5091676.0081625.4811533.5451436.0641424.811484.2391233.9011173.7111095.568
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▇▇▇██▆▅▅▄▃▃▂▁▁▃▂▂-0.541-0.566-0.618-0.608-0.495-0.561-0.787-0.875-0.864-1.016-1.193-1.222-1.266-1.429-1.464-1.214-1.28-1.323
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:InvestmentType us-gaap:AvailableforsaleSecurities▃▃▃▄▅█▄▄▅▃▂▂▂▁▁▂▂▃0.0250.0380.0310.0780.2270.4250.1040.0870.1540.056-0.074-0.034-0.027-0.128-0.105-0.034-0.0460.036
us-gaap:TreasuryStockValue ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁███75.44875.43174.12474.05274.00973.99172.45572.37272.26472.23967.01666.99966.8466.81365.854219.93219.909219.726
us-gaap:StockIssuedDuringPeriodValueNewIssues NANANA158.083194.886NANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNANANA158.082194.866NANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:CommonStockNANANA0.0010.02NANANANANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁█2.4864.254NA2.1542.6523.79NA1.7152.7423.671NA2.9122.3063.075NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▁▁▁▃▄▃▅▆▆297.468186.648-95.889-82.426-81.54134.58250.82417.373135.873205.151197.965NANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▇▇▅▁█▇▅▆▃-81.517-97.506-41.186-55.46-133.586-323.768-14.773-61.597-134.508-103.951-233.115NANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▂█▅▂▂▁▂▂▃-128.512-111.795-4.258982.883584.36298.4547.228-130.895-12.70716.206266.173NANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃▂▁█▅▁▃▁▂▃87.439-22.653-141.333844.997369.235-190.73243.279-175.119-11.342117.406NANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▆▄▄▄▆▇▇█▇▆▇█▆▅▁▇█▇14.516-26.869-46.587-31.017-4.84936.36724.00147.17732.86411.64725.0638.8472.662-20.266-99.44433.04545.31519.474
us-gaap:DepreciationDepletionAndAmortization ████▇▇▆▅▅▄▄▃▃▂▂▂▂▁73.70374.31272.13371.35169.11365.99161.91357.71254.91350.72647.96343.77345.61839.37336.47236.8435.33131.509
us-gaap:IncreaseDecreaseInAccountsPayable █▅▄▄▁▇▅▅▇▃▁▇█▆▃▄▄█20.8223.202-7.546-3.029-21.33114.854-0.314-1.14115.567-13.543-23.45413.35819.1866.227-7.799-2.559-2.54918.937
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▁▁▁▃▄▃▅▆▆297.468186.648-95.889-82.426-81.54134.58250.82417.373135.873205.151197.965NANANANANANANA
us-gaap:NetIncomeLoss ▁▃▃▃▃▄▆▆▆▅▆▆▅▄█▆▆▅-287.863-112.321-157.304-99.14-144.428-27.82881.21483.464114.50156.07691.93797.4811.254-44.922250.33860.1978.14331.935
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█-287.863-112.321NA-99.14-144.428-27.828NA83.464114.50156.076NANANANANANANANA
us-gaap:ShareBasedCompensation ▅█▆▅▅▇▁▄▅▇▅▆▅▆▄▄▄▆2.4864.2542.9792.1542.6523.790.0261.7152.7423.6712.7282.9122.3063.0751.7992.0521.8552.816
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▇▇▅▁█▇▅▆▃-81.517-97.506-41.186-55.46-133.586-323.768-14.773-61.597-134.508-103.951-233.115NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▂█▅▂▂▁▂▂▃-128.512-111.795-4.258982.883584.36298.4547.228-130.895-12.70716.206266.173NANANANANANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▅▁▁█▅▂▂▁▁▁▃▂▃▃▃▂▂▂537.65825.33842.0896.245505.165168.981131.1850.035.059.706313.92877.831213.212227.128223.898150.0140.301115.526
us-gaap:RepaymentsOfLongTermDebt █▅▂▃▄▂▄▂▂▂▂▂▂▁▂▁▂▁234.8135.946.358.6106.942.6120.940.147.937.944.132.642.018.738.913.439.810.2
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▁▁▁▁▁▁▁▁▂▁▁▁▁█▁▁▁0.0171.3070.0720.0430.0181.5360.0830.1080.0255.2230.0170.1590.0270.95945.3420.0210.1831.034
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value11000.010000.010000.028000.027000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.03000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value105979279686868686868686969696970717172737373737372727272727241
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value105979279686868686868686969696970717172737272727272727272727241
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value3711000.0565000.0482000.0136000.0127000.0159000.05000.0248000.0324000.0124000.017000.088000.0122000.054000.085000.057000.056000.027000.0057000.056000.01000.02000.00040000.012000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-2.73-1.15-1.61-1.07-1.81-0.411.191.221.670.821.351.430.16-0.663.640.871.130.460.71.171.030.871.041.351.060.940.770.920.890.520.590.840.580.420.270.430.480.320.330.380.410.30.362.35-0.38
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-2.73-1.15-1.61-1.07-1.81-0.411.181.221.670.821.341.420.16-0.663.630.871.120.460.71.171.030.861.041.351.050.940.760.910.880.510.590.840.580.420.270.430.480.320.330.380.410.30.362.33-0.38
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-287.838-112.269-157.314-99.253-144.362-27.602818311456919711-44.887250607831488173627496776755676437
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-33.5-24.3-31.6-24.7-104.2-3.68.48.411.36.610.710.81.3-6.437.58.811.25.40.00.00.00.00.00.00.00.00.00.00.00.0

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-30
Value-331.63
Percentage of GainsLossesOnExtinguishmentOfDebt100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-38.6

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:ConvertibleDebt


Gains
Period End2021-06-30
Value-36.4
Percentage of GainsLossesOnExtinguishmentOfDebt11.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive us-gaap:ConvertibleDebt0.0

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Gains
Period End2021-06-30
Value-295.2
Percentage of GainsLossesOnExtinguishmentOfDebt89.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-34.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:FourPointSevenFivePercentConvertibleSeniorNotes us-gaap:ConvertibleDebt0.0

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-273.31-138.181-204.534-128.52-212.536-74.5941061091487212012815-59.66281941245177127115981181541201098910010359689766493149553738442613108.871-10.529
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-31.8-30.0-41.0-32.0-153.4-9.711.011.014.78.414.014.21.8-8.512.313.817.78.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value14-25.86-47.23-29.38-68.108-46.7662525341628313.895-14.74-165.231344519294642364357444033333822243624191218201414169.3985.750.697-52.869-0.463
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.7-5.6-9.5-7.3-49.2-6.12.62.63.41.93.43.40.5-2.1-24.85.06.63.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:CumulativeEffectPeriodOfAdoptionAdjustment, save:AccountingStandardsUpdate202006


Income
Period End2021-01-01
Value17
Percentage of IncomeTaxExpenseBenefit0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:CumulativeEffectPeriodOfAdoptionAdjustment save:AccountingStandardsUpdate2020060.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.408-109.0560.8690.972-18.134-1.497-2.4450.8946.5780.816-76.8550.0962.5910.6791.4740.0121.4592.881121728-64.1580.79840449.883
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-23.60.20.2-13.1-0.2-0.30.10.60.1-8.90.00.30.10.20.00.20.50.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense us-gaap:LongtermDebtType

us-gaap:InterestExpense

us-gaap:SecuredDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1317172.51.1
Percentage of InterestExpense100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.53.73.40.60.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SecuredDebt0.00.00.00.00.0

Interest Expense Debt

us-gaap:InterestExpenseDebt

us-gaap:InterestExpenseDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3944493327232525252423212017161413121211108.0557.2675.9054.3342.7721.5770.00.00.0
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.69.79.98.320.13.12.72.52.52.92.72.42.42.52.42.22.02.10.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense Long Term Debt

us-gaap:InterestExpenseLongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:InterestExpenseLongTermDebt

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:SecuredDebt


Interest
Period End2021-06-302021-03-31
Value1317
Percentage of InterestExpenseLongTermDebt100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.63.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive us-gaap:SecuredDebt0.00.0

save:PayrollSupportProgramCARESAct, us-gaap:UnsecuredDebt


Interest
Period End2021-06-302021-03-312020-06-30
Value0.2820.1990.057
Percentage of InterestExpenseLongTermDebt2.11.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:PayrollSupportProgramCARESAct us-gaap:UnsecuredDebt0.00.00.0

us-gaap:InterestExpenseLongTermDebt us-gaap:LongtermDebtType

save:EquipmentNotesSeriesA20151


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3.1783.2753.343.4383.4033.5493.63.7473.7093.8383.9244.0574.0154.1424.2354.3664.321
Percentage of InterestExpenseLongTermDebt23.518.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.70.70.92.50.50.40.40.40.40.50.40.50.60.60.60.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EquipmentNotesSeriesA201510.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesA20171


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.6340.6330.6520.6660.6730.680.6950.7110.720.7170.7270.6310.5680.2460.0190.00.0
Percentage of InterestExpenseLongTermDebt4.73.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.50.10.10.10.10.10.10.10.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EquipmentNotesSeriesA201710.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesAA20171


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.7591.7551.8081.8491.8681.8871.9281.9731.9971.9892.0181.7511.5760.6820.0540.00.0
Percentage of InterestExpenseLongTermDebt13.010.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.40.40.51.30.20.20.20.20.20.20.20.20.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EquipmentNotesSeriesAA201710.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesB20151


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.6640.7050.7190.760.7520.7950.8070.850.8410.880.90.9390.931.0121.0361.1181.108
Percentage of InterestExpenseLongTermDebt4.94.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.10.20.50.10.10.10.10.10.10.10.10.10.20.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EquipmentNotesSeriesB201510.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesB20171


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.5560.5570.5750.6030.6230.6440.6710.7080.7370.7540.7840.70.6540.2830.0220.00.0
Percentage of InterestExpenseLongTermDebt4.13.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.40.10.10.10.10.10.10.10.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EquipmentNotesSeriesB201710.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesC20151


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.9971.0561.081.1381.1381.2091.2231.2791.281.3351.3661.420.7890.00.00.00.0
Percentage of InterestExpenseLongTermDebt7.46.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.30.80.20.10.10.10.20.20.20.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EquipmentNotesSeriesC201510.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesC20171


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.0921.081.0911.1041.0921.0921.0921.1041.0921.081.0780.9340.4660.00.00.00.0
Percentage of InterestExpenseLongTermDebt8.16.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.30.80.10.10.10.10.10.10.10.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:EquipmentNotesSeriesC201710.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:FinanceLeaseObligations


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.0240.0240.0260.0290.0270.1130.0320.0370.3090.0290.0160.0180.021
Percentage of InterestExpenseLongTermDebt0.20.10.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:FinanceLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.0

save:FixedRateLoan


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value10108.5168.217.6136.6776.5176.4326.2024.9794.8444.8814.9114.0552.8111.586
Percentage of InterestExpenseLongTermDebt79.462.50.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.32.42.15.91.00.70.70.60.70.60.50.60.70.60.40.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:FixedRateLoan0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConvertibleDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-06-30
Value1.7492.0785.8845.8833.1380.0
Percentage of InterestExpenseLongTermDebt12.911.90.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.51.21.52.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConvertibleDebt0.00.00.00.00.00.0

us-gaap:RevolvingCreditFacility


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.5621.171.3631.4031.4561.1591.3261.4931.5591.4130.7930.00.00.0
Percentage of InterestExpenseLongTermDebt4.26.70.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.30.30.31.10.20.10.20.20.20.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RevolvingCreditFacility0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SecuredDebt


Interest
Period End2020-12-312020-09-30
Value172.518
Percentage of InterestExpenseLongTermDebt0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SecuredDebt0.00.0

us-gaap:SeniorLoans


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value352.5452.6012.8133.5933.8093.8783.9454.14.1954.2574.3174.4744.5644.619
Percentage of InterestExpenseLongTermDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.10.61.90.40.40.40.40.50.50.50.50.60.70.70.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SeniorLoans0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnsecuredDebt


Interest
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.1830.1690.0570.0
Percentage of InterestExpenseLongTermDebt0.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:UnsecuredDebt0.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3940241819172018221929198.28.569155.672123.943134.221183.433.212.0931.7470.011-0.3980.0720.3260.0
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.68.75.04.614.42.32.11.92.22.23.42.11.01.22.30.81.80.70.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-287.863-112.321-157.304-99.14-144.428-27.828818311456919711-44.92225060783148817361749776695567643743614230193034232327167.8839.53161-10.066
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-33.5-24.3-31.6-24.7-104.3-3.68.48.411.36.610.710.81.3-6.437.68.811.25.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312012-03-31
Value-287.863-112.321-99.14-144.428-27.8288311456108
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0463.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-33.5-24.3-24.7-104.3-3.68.411.36.60.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-366520000.0-35651000.0-44619000.0-29049000.0-22152000.0-16602000.0-17861000.0-15668000.0-15369000.0-15723000.0-15163000.0-16538000.0-93372000.0-20865000.0-9552000.0-9324000.0-8680000.0-7583000.0-7604000.0-7253000.0-6105000.0-3239000.0-2191000.0-2854000.0-1457000.0-217000.0-947000.03000.0-1356000.031000.062000.0-28000.069000.015000.064000.062000.096000.0372000.0247000.057000.0-8644000.0-13211000.0-11748000.0-12111000.0-12320000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-42.7-7.7-9.0-7.2-16.0-2.2-1.8-1.6-1.5-1.8-1.8-1.8-11.0-3.0-1.4-1.4-1.2-1.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Costs And Expenses

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingCostsAndExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value766563658501328829845867849767
Percentage of OperatingCostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax89.2122.2132.1124.7237.4107.587.187.483.889.7

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value93-102.53-159.915-99.471-190.384-57.99212412416387136145108-38.797921041325985135121101120157122109891001055968976649314955373844342621201.791
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.8-22.2-32.1-24.7-137.4-7.512.912.616.210.315.816.012.7-5.513.915.119.010.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value25000.052000.0-10000.0-113000.066000.0226000.088000.0-11000.0152000.0177000.029000.045000.0162000.035000.0-268000.066000.042000.040000.027000.060000.088000.090000.081000.0-553000.01238000.0-1594000.0-718000.0000
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.0-0.00.00.00.0-0.00.00.00.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value25000.052000.0-113000.066000.0226000.0-11000.0152000.0177000.045000.0162000.035000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.00.00.0-0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-233000.052000.0-77000.0-66000.019000.0-222000.0-144000.0-233000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.0-0.0-0.00.0-0.0-0.0-0.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8594614984011387719699911012855862904851704666687700590
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AirlineDestinations

us-gaap:DomesticDestination


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value770408382134697880890753819768647636640543
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax89.788.695.297.090.588.887.988.090.690.292.092.691.492.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax89.788.695.297.090.588.887.988.090.690.292.092.691.492.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:DomesticDestination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LatinAmericaDestination


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value8852194.15673111122102858356506046
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.311.44.83.09.511.212.112.09.49.88.07.48.67.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.311.44.83.09.511.212.112.09.49.88.07.48.67.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:LatinAmericaDestination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

save:ProductsAndServicesFare


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value36917420616463321461493515416445476439342337355371299
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.037.841.440.946.041.747.649.750.948.751.652.751.648.750.651.753.050.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.037.841.440.946.041.747.649.750.948.751.652.751.648.750.651.753.050.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:ProductsAndServicesFare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:ProductsAndServicesNonFare


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value47627628122867432490479478421401411396346313313309273
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.559.856.556.848.456.050.648.447.349.346.545.546.649.247.045.644.246.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.559.856.556.848.456.050.648.447.349.346.545.546.649.247.045.644.246.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:ProductsAndServicesNonFare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:ProductsAndServicesPassenger


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value846450488392130753951973994838846887836689650669680572
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.597.698.097.794.497.798.198.198.297.998.198.298.297.997.797.497.297.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.597.698.097.794.497.798.198.198.297.998.198.298.297.997.797.497.297.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax save:ProductsAndServicesPassenger100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductAndServiceOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1210109.1787.71217181818171616151415181917
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.42.02.35.62.31.91.91.82.11.91.81.82.12.32.62.83.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.42.02.35.62.31.91.91.82.11.91.81.82.12.32.62.83.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductAndServiceOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value352322171133383940353337343028292926232524222023222015202018161717151314141412141311101010
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.15.14.44.48.24.43.93.94.04.23.94.24.14.44.24.34.34.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8671838783988557776772357043657566626423516547814681465441433870367434383151312930302763253022762105195516021413134912991180112511071019919884869844745722709475
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8671838783988557776772357043657566626423516547814681465441433870367434383151312930302763253022762105195516021413134912991180112511071019919884869844745722709475
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value218020922249240423432234226121802095197719281833173317191777157015081428139413441299127712251148108210691003945875809769723658614582559527490466442415-105.077-178.127
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.125.026.828.130.230.932.133.231.430.837.338.337.036.942.940.641.041.544.243.042.946.248.450.451.454.762.666.964.962.365.164.359.560.363.363.260.658.162.661.358.5-22.10.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment


Stockholders
Period End2020-12-312019-12-312018-12-31
Value-1.609-1.609-5.549
Percentage of StockholdersEquity-0.1-0.1-0.3
Percentage of Assets-0.0-0.0-0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment0.00.00.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-31
Value-55.59
Percentage of StockholdersEquity-2.5
Percentage of Assets-0.7
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:AdditionalPaidInCapital0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-31
Value-1.609-1.609-5.549
Percentage of StockholdersEquity-0.1-0.1-0.3
Percentage of Assets-0.0-0.0-0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings0.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value-0.541-0.566-0.618-0.608-0.495-0.561-0.787-0.875-0.864-1.016-1.193-1.222-1.267-1.429-1.464-1.345-1.546-0.7180.00.00.0
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.10.00.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value11267507997966363833793793773743713683653633605515445265155044960.6760.107
Percentage of StockholdersEquity51.635.935.533.127.217.116.817.418.019.019.220.121.121.120.339.544.452.567.086.6106.3-0.6-0.1
Percentage of Assets13.08.99.59.38.25.35.45.85.75.87.27.77.87.88.717.521.532.843.654.866.50.10.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.0110.010.010.0280.0270.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0060.0060.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value113014181524168217811925195518731790167616251533143614241484106379848125679-29.308-105.756-178.237
Percentage of StockholdersEquity51.967.867.870.076.086.286.586.085.584.784.383.682.882.883.576.365.248.033.313.6-6.3100.6100.1
Percentage of Assets13.016.918.219.722.926.627.828.526.926.131.532.130.730.635.833.731.630.021.78.6-3.9-22.20.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-75.448-75.431-74.124-74.052-74.009-73.991-72.455-72.372-72.264-72.239-67.016-66.999-66.84-66.813-65.854-218.692-116.182-3.921-2.291-1.151-0.1290.0
Percentage of StockholdersEquity-3.5-3.6-3.3-3.1-3.2-3.3-3.2-3.3-3.4-3.7-3.5-3.7-3.9-3.9-3.7-15.7-9.5-0.4-0.3-0.2-0.0-0.0
Percentage of Assets-0.9-0.9-0.9-0.9-1.0-1.0-1.0-1.1-1.1-1.1-1.3-1.4-1.4-1.4-1.6-6.9-4.6-0.2-0.2-0.1-0.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2388227623552499166712311385140315201516134512061230129812801244123011469751103118310691026918871856731704688675649661676605547538539534442449454251
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.527.128.129.221.517.019.721.322.823.626.025.226.327.930.932.233.533.331.035.339.138.740.640.341.443.845.649.851.052.055.058.861.159.359.560.962.163.359.462.364.052.8

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value186317741789194711277889789351110112210047738128988008638698187008251014902803748769741632588567543530540524483416399414420343350248628273718616
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.521.221.322.814.510.913.914.216.717.519.516.217.419.319.322.323.723.822.226.433.532.731.832.936.537.939.541.642.041.944.948.047.447.445.345.147.749.846.048.635.00.017.40.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value19251838186120021157788978935111011221004800
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.221.922.223.414.910.913.914.216.717.519.519.3

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value132121124121126109103136102908383798183675753464848544812662766673687895
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.41.51.41.61.51.52.11.51.41.61.81.71.82.01.71.61.61.51.51.62.01.95.62.93.94.15.25.16.710.4

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value78173168063158253749245036736933229626123520718316114012210590766555474136322927252321191731302827272624
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.08.78.17.47.57.47.06.85.55.86.46.25.65.15.04.74.44.13.93.43.02.82.62.42.22.12.32.32.22.12.12.11.91.91.93.63.53.43.73.83.75.0

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

save:HeavyMaintenance


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value22214211716016211875
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment32.729.035.277.3132.9181.5210.0
Percentage of Assets2.72.02.33.95.24.74.7
Percentage of Assets save:HeavyMaintenance0.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3832381638313822381037333530333333623154311629062818277922381983178916041465139012381048844710568442225533737353130302825312423201919
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.245.545.644.749.151.650.150.750.549.160.360.860.259.754.051.248.746.746.544.440.938.033.431.227.022.614.13.82.82.93.02.82.83.03.12.93.72.93.12.92.84.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value15981461141714081430142513691059105710460.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets18.417.416.916.518.419.719.416.115.916.30.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value3535363535353640384379797982121112114114110858178777371696763595751434245446742
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.50.50.50.60.60.71.51.71.71.82.92.93.13.33.52.72.72.83.13.23.43.54.24.54.44.44.43.83.84.54.89.19.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value553328364162434143263963503122303339152927231715211313172124232023172421282415171613
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.40.30.40.50.90.60.60.70.40.81.31.10.70.60.80.91.20.51.00.90.80.70.71.00.70.81.31.61.92.01.82.11.72.62.43.32.92.12.52.42.8

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value608509401429452411315361402403291323357357263220
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.06.14.85.05.85.74.55.56.06.35.76.87.67.76.47.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value16011508134212961271123111121052121111268348249001047647662685673531570607567466466529486365394400415335331380343276267291297227239256214
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.518.016.015.216.417.015.816.018.217.516.217.219.222.515.617.118.719.616.918.220.020.518.420.525.124.922.827.929.732.028.529.434.433.730.130.333.535.230.433.136.245.1

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value21035638337228733421419317517216215014513611510595928484785349372922100.0
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.44.24.64.43.74.63.02.92.62.73.23.13.12.92.82.72.62.72.72.72.61.92.01.71.41.10.70.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1441351331301281251201171141280.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.71.61.61.51.71.71.71.81.72.00.0

us-gaap:OperatingLeaseLiabilityCurrent save:RightOfUseAssetType

save:AircraftAndSpareEngineLeases


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value141131130127125122117114112125
Percentage of OperatingLeaseLiabilityCurrent97.697.497.597.597.497.397.797.897.797.9
Percentage of Assets1.61.61.61.51.61.71.71.71.72.0
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.00.00.00.00.0

save:OtherLeasedEquipmentAndProperty


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0820.2250.3650.5040.5580.5510.544
Percentage of OperatingLeaseLiabilityCurrent0.10.20.30.40.50.50.4
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets save:OtherLeasedEquipmentAndProperty0.00.00.00.00.00.00.0

save:PropertyFacilityLeases


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.5143.5163.3073.1783.0923.0162.2972.0412.1372.165
Percentage of OperatingLeaseLiabilityCurrent2.42.62.52.42.42.41.91.71.91.7
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.00.00.00.00.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value3934313528363429272625232822232322172117182114222220151212171118131611111110
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.40.40.40.40.50.50.40.40.40.50.50.60.50.60.60.60.50.70.60.60.80.61.01.11.01.00.90.91.31.01.61.21.71.21.31.31.4

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value496473393326247296373337379395339287346378262249244231226217217228182176207190152160146161145129151149121109117117989710073
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.75.64.73.83.24.15.35.15.76.26.66.07.48.16.36.46.76.77.27.07.28.37.27.79.99.89.511.310.912.412.311.513.714.713.212.413.513.913.313.614.115.4

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302016-03-312015-09-302015-06-302013-12-312012-12-312012-09-302012-06-302011-12-31
Value328534693580358426647235484350.00.00.00.00.0
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0
Percentage of Assets37.941.442.641.934.326.224.120.70.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Long
Period End2021-06-30
Value487
Percentage of LongTermDebt14.8
Percentage of Assets5.6
Percentage of Assets save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix us-gaap:ConvertibleDebt0.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312010-12-31
Value301330473065307323321964195919672023203820241770173115701387121410899918978948366555965003983021350.011
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0
Percentage of Assets34.836.336.535.930.027.227.829.930.431.739.237.037.033.833.531.429.628.828.528.627.623.723.622.019.015.58.50.02.5

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3014304830663074233319651960196820252039202417701387
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.836.336.535.930.027.227.829.930.431.839.237.033.5

us-gaap:LongTermDebtAndCapitalLeaseObligations us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:CumulativeEffectPeriodOfAdoptionAdjustment, save:AccountingStandardsUpdate202006


Long
Period End2021-01-01
Value75
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment save:AccountingStandardsUpdate2020060.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:AccountingStandardsUpdate202006


Long
Period End2020-12-31
Value75
Percentage of LongTermDebtAndCapitalLeaseObligations2.5
Percentage of Assets0.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:AccountingStandardsUpdate2020060.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value412398439486517505469446399366355332295292313406308
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.84.75.25.76.77.06.76.86.05.76.96.96.36.37.610.59.8

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14221290124812421269126812189159158950.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets16.415.414.914.516.317.517.313.913.713.90.0

us-gaap:OperatingLeaseLiabilityNoncurrent save:RightOfUseAssetType

save:AircraftAndSpareEngineLeases


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1406128912541229124612441197908907886
Percentage of OperatingLeaseLiabilityNoncurrent98.999.9100.598.998.298.198.399.299.299.1
Percentage of Assets16.215.414.914.416.117.217.013.813.613.8
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.00.00.00.00.0

save:PropertyFacilityLeases


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value202121222223207.2957.0757.928
Percentage of OperatingLeaseLiabilityNoncurrent1.51.71.71.81.81.91.70.80.80.9
Percentage of Assets0.20.30.30.30.30.30.30.10.10.1
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

save:AircraftAndSpareEngineLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value219204209206205200192175172185
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.42.52.42.62.82.72.72.62.9
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.00.00.00.00.0

save:PropertyFacilityLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.0083.9834.3974.3094.2624.5523.5322.4172.4172.394
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo1.82.02.12.12.12.31.81.41.41.3
Percentage of Assets0.00.00.10.10.10.10.10.00.00.0
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

save:AircraftAndSpareEngineLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value197182197193192201193174171183
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.22.32.32.52.82.72.72.62.9
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.00.00.00.00.0

save:PropertyFacilityLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.8192.8193.3833.3083.264.2623.2212.1311.9091.903
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree1.41.51.71.71.72.11.71.21.11.0
Percentage of Assets0.00.00.00.00.00.10.00.00.00.0
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

save:AircraftAndSpareEngineLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value175160175171170189181176172175
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.01.92.12.02.22.62.62.72.62.7
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.00.00.00.00.0

save:PropertyFacilityLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.061.062.7722.7722.7223.262.571.5281.081.562
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour0.60.71.61.61.61.71.40.90.60.9
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

save:AircraftAndSpareEngineLeases


Lessee
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value153167159158155151
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0100.0100.0
Percentage of Assets1.82.32.32.42.32.4
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.0

save:PropertyFacilityLeases


Lessee
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.062.7222.0461.1321.0551.055
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive0.71.61.30.70.70.7
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

save:AircraftAndSpareEngineLeases


Lessee
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value9751019921617592477
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0100.0100.0
Percentage of Assets11.614.113.19.48.97.4
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.0

save:PropertyFacilityLeases


Lessee
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value1431441384.9384.9384.749
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive14.714.115.00.80.81.0
Percentage of Assets1.72.02.00.10.10.1
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability save:RightOfUseAssetType

us-gaap:OperatingLeaseLiability

save:AircraftAndSpareEngineLeases


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1547142013841356137213661315102310201012
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.816.916.515.917.718.918.715.615.315.8
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.00.00.00.00.0

save:OtherLeasedEquipmentAndProperty


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0820.2250.3650.5040.6410.7760.908
Percentage of OperatingLeaseLiability0.00.00.00.00.10.10.1
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets save:OtherLeasedEquipmentAndProperty0.00.00.00.00.00.00.0

save:PropertyFacilityLeases


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value242524252526229.3369.21210
Percentage of OperatingLeaseLiability1.61.81.81.91.91.91.70.90.91.0
Percentage of Assets0.30.30.30.30.30.40.30.10.10.2
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

save:AircraftAndSpareEngineLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2187201019471912194019281842134613521315
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.224.023.222.325.026.726.220.520.320.5
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.00.00.00.00.0

save:OtherLeasedEquipmentAndProperty


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0830.2280.3720.5170.6620.8070.951
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue0.00.00.00.00.00.10.1
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets save:OtherLeasedEquipmentAndProperty0.00.00.00.00.00.00.0

save:PropertyFacilityLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value158159159160161162153121213
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue7.27.98.28.48.38.48.31.00.91.0
Percentage of Assets1.81.91.91.92.12.22.20.20.20.2
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

save:AircraftAndSpareEngineLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value639589562555568561526323332303
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.47.06.76.57.37.87.54.95.04.7
Percentage of Assets save:AircraftAndSpareEngineLeases0.00.00.00.00.00.00.00.00.00.0

save:OtherLeasedEquipmentAndProperty


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0010.0030.0070.0130.0210.0310.043
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount0.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets save:OtherLeasedEquipmentAndProperty0.00.00.00.00.00.00.0

save:PropertyFacilityLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1331341341341351351303.5093.5833.658
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount20.922.823.924.323.824.224.81.11.11.2
Percentage of Assets1.51.61.61.61.71.91.90.10.10.1
Percentage of Assets save:PropertyFacilityLeases0.00.00.00.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value218020922249240423432234226121802095197719281833173317191777157015081428139413441299127712251148108210691003945875809769723658614582559527490466442415-105.077-178.127
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.125.026.828.130.230.932.133.231.430.837.338.337.036.942.940.641.041.544.243.042.946.248.450.451.454.762.666.964.962.365.164.359.560.363.363.260.658.162.661.358.5-22.10.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment


Stockholders
Period End2020-12-312019-12-312018-12-31
Value-1.609-1.609-5.549
Percentage of StockholdersEquity-0.1-0.1-0.3
Percentage of Assets-0.0-0.0-0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment0.00.00.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-31
Value-55.59
Percentage of StockholdersEquity-2.5
Percentage of Assets-0.7
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:AdditionalPaidInCapital0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-31
Value-1.609-1.609-5.549
Percentage of StockholdersEquity-0.1-0.1-0.3
Percentage of Assets-0.0-0.0-0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings0.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value-0.541-0.566-0.618-0.608-0.495-0.561-0.787-0.875-0.864-1.016-1.193-1.222-1.267-1.429-1.464-1.345-1.546-0.7180.00.00.0
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.10.00.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value11267507997966363833793793773743713683653633605515445265155044960.6760.107
Percentage of StockholdersEquity51.635.935.533.127.217.116.817.418.019.019.220.121.121.120.339.544.452.567.086.6106.3-0.6-0.1
Percentage of Assets13.08.99.59.38.25.35.45.85.75.87.27.77.87.88.717.521.532.843.654.866.50.10.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.0110.010.010.0280.0270.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0070.0060.0060.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value113014181524168217811925195518731790167616251533143614241484106379848125679-29.308-105.756-178.237
Percentage of StockholdersEquity51.967.867.870.076.086.286.586.085.584.784.383.682.882.883.576.365.248.033.313.6-6.3100.6100.1
Percentage of Assets13.016.918.219.722.926.627.828.526.926.131.532.130.730.635.833.731.630.021.78.6-3.9-22.20.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-75.448-75.431-74.124-74.052-74.009-73.991-72.455-72.372-72.264-72.239-67.016-66.999-66.84-66.813-65.854-218.692-116.182-3.921-2.291-1.151-0.1290.0
Percentage of StockholdersEquity-3.5-3.6-3.3-3.1-3.2-3.3-3.2-3.3-3.4-3.7-3.5-3.7-3.9-3.9-3.7-15.7-9.5-0.4-0.3-0.2-0.0-0.0
Percentage of Assets-0.9-0.9-0.9-0.9-1.0-1.0-1.0-1.1-1.1-1.1-1.3-1.4-1.4-1.4-1.6-6.9-4.6-0.2-0.2-0.1-0.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value11000.010000.010000.028000.027000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.07000.03000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value11267507997966363833793793773743713683653633605575555535515495475455445425395365265235205185155135085065045004994974964964960.676
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.08.99.59.38.25.35.45.85.75.87.27.77.87.88.714.415.116.117.517.618.119.721.523.825.627.432.837.038.639.943.645.646.049.754.856.657.558.966.568.769.90.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value11301418152416821781192519551873179016761625153314361424148412331173109510631015933860798724627550481425358293256212151109795928-5.889-29.308-53.299-80.956-105.756
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.016.918.219.722.926.627.828.526.926.131.532.130.730.635.831.931.931.933.732.430.831.131.631.829.828.130.030.126.622.621.718.913.710.88.66.73.3-0.7-3.9-7.4-11.4-22.2

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:AccountingStandardsUpdate202006


Retained
Period End2020-12-31
Value6.1
Percentage of RetainedEarningsAccumulatedDeficit0.4
Percentage of Assets0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:AccountingStandardsUpdate2020060.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-541000.0-566000.0-618000.0-608000.0-495000.0-561000.0-787000.0-875000.0-864000.0-1016000.0-1193000.0-1222000.0-1266000.0-1429000.0-1464000.0-1214000.0-1280000.0-1323000.0-1345000.0-1400000.0-1455000.0-1511000.0-1546000.0-1627000.0-1074000.0-2312000.0-718000.00
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:InvestmentType

us-gaap:AvailableforsaleSecurities


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value25000.038000.031000.078000.0227000.0425000.0104000.087000.0154000.056000.0-74000.0-34000.0-27000.0-128000.0-105000.0-34000.0-46000.036000.023000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-4.6-6.7-5.0-12.8-45.9-75.8-13.2-9.9-17.8-5.56.22.82.19.07.22.83.6-2.7-1.7
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.0
Percentage of Assets us-gaap:AvailableforsaleSecurities0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value75757474747372727272676666666521921921921821818012611611683143.9213.7923.5132.9122.2912.2572.0881.4721.1511.0650.9850.586-0.129
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.90.91.01.01.01.11.11.11.31.41.41.41.65.76.06.46.97.06.04.64.65.14.00.80.20.30.30.20.20.20.20.10.10.10.10.1-0.0

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2020-09-302020-06-30
Value158194
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0
Percentage of Assets0.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-09-302020-06-30
Value158194
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.0

us-gaap:CommonStock


Stock
Period End2020-09-302020-05-122020-06-30
Value0.0010.02020.02
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.00.0
Percentage of Assets0.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2.4864.2542.1542.6523.791.7152.7423.6712.9122.3063.075
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2.4864.2542.1542.6523.791.7152.7423.6712.9122.3063.075
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value297186-95.889-82.426-81.541345017135205197902139498524-8.61317792111143-5.944239.989
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.640.5-19.2-20.5-58.94.55.21.813.424.022.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-81517000.0-97506000.0-41186000.0-55460000.0-133590000.0-323770000.0-14773000.0-61597000.0-134510000.0-103950000.0-233120000.0-77287000.0-31744000.0-24792000.0-7849000.0-25715000.0-7869000.0-14048000.02973000.0-8379000.0-36054000.0-9304000.0-7690000.0-14169000.0-14179000.0-8204000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.5-21.1-8.3-13.8-96.4-42.0-1.5-6.2-13.3-12.1-27.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value-128.512-111.795-4.258982584987.228-130.895-12.707162660.0060.4350.7110.2037.190.7186.827-26.5736.2086.6990.233-0.0020.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-15.0-24.2-0.9244.5421.812.80.7-13.2-1.31.930.90.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value87-22.653-141.333844369-190.73243-175.119-11.342117
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.2-4.9-28.4210.2266.5-24.74.5-17.7-1.113.7

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value14-26.869-46.587-31.017-4.849362447321125382.662-20.266-99.4443345198.51931242191636.119-5.56340.0-0.8050.413.2522.8333.432.532
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value73747271696561575450474345393636353127252423221917141311
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value203.202-7.546-3.029-21.33114-0.314-1.14115-13.543-23.45413196.227-7.799-2.559-2.549180.221-10.068-1.6794.7030.366-5.5167.4230.433-4.51-4.062-2.9191.457-0.468-0.2156.344-7.335
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value297186-95.889-82.426-81.541345017135205197902139498524-8.61317792111143-5.944239.989
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.640.5-19.2-20.5-58.94.55.21.813.424.022.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-287.863-112.321-157.304-99.14-144.428-27.828818311456919711-44.92225060783148817361749776695567643743614230193034232327167.8839.53161-10.066
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-33.5-24.3-31.6-24.7-104.3-3.68.48.411.36.610.710.81.3-6.437.68.811.25.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312012-03-31
Value-287.863-112.321-99.14-144.428-27.8288311456108
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0463.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-33.5-24.3-24.7-104.3-3.68.411.36.60.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value2.4864.2542.9792.1542.6523.790.0261.7152.7423.6712.7282.9122.3063.0751.7992.0521.8552.8161.6021.5982.1151.792.2232.2562.7581.9852.4822.4431.3252.5471.7191.182
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-81517000.0-97506000.0-41186000.0-55460000.0-133590000.0-323770000.0-14773000.0-61597000.0-134510000.0-103950000.0-233120000.0-77287000.0-31744000.0-24792000.0-7849000.0-25715000.0-7869000.0-14048000.02973000.0-8379000.0-36054000.0-9304000.0-7690000.0-14169000.0-14179000.0-8204000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.5-21.1-8.3-13.8-96.4-42.0-1.5-6.2-13.3-12.1-27.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value-128.512-111.795-4.258982584987.228-130.895-12.707162660.0060.4350.7110.2037.190.7186.827-26.5736.2086.6990.233-0.0020.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-15.0-24.2-0.9244.5421.812.80.7-13.2-1.31.930.90.00.00.00.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value53725428965051681310.03559313772132272231501401153878226731201201111851480.00.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value23413546581064212040473744324218381339103410.09.99.79.67.65.62.6
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value0.0171.3070.0720.0430.0181.5360.0830.1080.0255.2230.0170.1590.0270.959450.0210.1831.0340.1240529.6010.0993268100.1290.2790.6010.6210.0340.1690.6160.3210.0860.080.3990.4570.1290.00.0
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-16.018.7-3.822.90.320.627-22.66823.40.2290.222
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value43946935531330822166
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2900000.01700000.0300000.0500000.00
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.00.0

save:AmortizationOfDeferredGainsAndLossesFromSaleLeasebackTransactionsandDebtIssuanceCosts

save:AmortizationOfDeferredGainsAndLossesFromSaleLeasebackTransactionsandDebtIssuanceCosts


Amortization
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3509000.02704000.02527000.02106000.02175000.02076000.02289000.02311000.01956000.02928000.01624000.01529000.01654000.01410000.03351000.01895000.01027000.0842000.01968000.0
Percentage of AmortizationOfDeferredGainsAndLossesFromSaleLeasebackTransactionsandDebtIssuanceCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:CapacityReductionComparedToPriorYear us-gaap:UnusualOrInfrequentItem

save:CapacityReductionComparedToPriorYear

save:COVID19Pandemic


Capacity
Period End2020-12-312020-11-302020-05-31
Value20.120.894.0
Percentage of CapacityReductionComparedToPriorYear100.0100.0100.0

save:CapacityReductionInCurrentYearComparedToPriorYear

save:CapacityReductionInCurrentYearComparedToPriorYear


Capacity
Period End2020-09-302020-08-312020-07-312020-06-302020-05-312020-04-30
Value47.136.417.50.790.9390.762
Percentage of CapacityReductionInCurrentYearComparedToPriorYear100.0100.0100.0100.0100.0100.0

save:CapacityReductionInCurrentYearComparedToPriorYear us-gaap:StatementScenario

srt:ScenarioForecast


Capacity
Period End2020-09-302020-08-312020-07-31
Value0.450.350.18
Percentage of CapacityReductionInCurrentYearComparedToPriorYear1.01.01.0

save:CapacityReductionInCurrentYearComparedToPriorYear us-gaap:UnusualOrInfrequentItem

save:COVID19Pandemic


Capacity
Period End2021-03-312020-12-312020-11-302020-05-31
Value26.920.120.894.0
Percentage of CapacityReductionInCurrentYearComparedToPriorYear0.00.00.010010.6

save:ContractWithCustomerLiabilityRefundsIssued

save:ContractWithCustomerLiabilityRefundsIssued


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value433132297743
Percentage of ContractWithCustomerLiabilityRefundsIssued100.0100.0100.0100.0100.0100.0

save:DebtInstrumentConvertibleLiquidationPreferenceDuringPeriodValue us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:DebtInstrumentConvertibleLiquidationPreferenceDuringPeriodValue

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Debt
Period End2021-06-30
Value49
Percentage of DebtInstrumentConvertibleLiquidationPreferenceDuringPeriodValue100.0

save:DerivativeInstrumentsLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortionTax

save:DerivativeInstrumentsLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortionTax


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value10000.014000.015000.024000.013000.017000.019000.027000.09000.027000.018000.021000.0280000.031000.031000.031000.033000.032000.032000.033000.035000.015000.0
Percentage of DerivativeInstrumentsLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortionTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:EffectiveIncomeTaxRateReconciliationExcludingDiscreteTaxBenefitPercent

save:EffectiveIncomeTaxRateReconciliationExcludingDiscreteTaxBenefitPercent


Effective
Period End2020-12-31
Value0.6
Percentage of EffectiveIncomeTaxRateReconciliationExcludingDiscreteTaxBenefitPercent100.0

save:EmployeeRetentionCreditsDueToCOVID19 us-gaap:UnusualOrInfrequentItem

save:EmployeeRetentionCreditsDueToCOVID19

save:CARESAct


Employee
Period End2021-03-31
Value21
Percentage of EmployeeRetentionCreditsDueToCOVID19100.0

save:EmployeeTaxCreditsDueToCOVID19

save:EmployeeTaxCreditsDueToCOVID19


Employee
Period End2020-09-30
Value7.8
Percentage of EmployeeTaxCreditsDueToCOVID19100.0

save:EmployeeTaxCreditsDueToCOVID19 us-gaap:StatementScenario

srt:ScenarioForecast


Employee
Period End2020-12-31
Value2.0
Percentage of EmployeeTaxCreditsDueToCOVID190.0

save:ExtinguishmentOfDebtWriteOffOfTheRelatedOriginalIssuanceDiscount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:ExtinguishmentOfDebtWriteOffOfTheRelatedOriginalIssuanceDiscount

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:ConvertibleDebt


Extinguishment
Period End2021-06-30
Value3100000.0
Percentage of ExtinguishmentOfDebtWriteOffOfTheRelatedOriginalIssuanceDiscount100.0

save:ExtinguishmentOfDebtWriteOffRelatedDeferredFinancingCosts us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:ExtinguishmentOfDebtWriteOffRelatedDeferredFinancingCosts

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:ConvertibleDebt


Extinguishment
Period End2021-06-30
Value6100000.0
Percentage of ExtinguishmentOfDebtWriteOffRelatedDeferredFinancingCosts100.0

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Extinguishment
Period End2021-06-30
Value4500000.0
Percentage of ExtinguishmentOfDebtWriteOffRelatedDeferredFinancingCosts73.8

save:FederalFuelTaxSavingsDueToCOVID19

save:FederalFuelTaxSavingsDueToCOVID19


Federal
Period End2020-12-312020-09-30
Value3100000.02600000.0
Percentage of FederalFuelTaxSavingsDueToCOVID19100.0100.0

save:GainLossReclassifiedFromOtherComprehensiveIncomeNoncashAdjustment

save:GainLossReclassifiedFromOtherComprehensiveIncomeNoncashAdjustment


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-58000.0-58000.0-61000.0-63000.0-63000.0-65000.0-95000.0-72000.0-74000.0-74000.0-77000.0-79000.0-80000.0-79000.0-83000.0-85000.0-83000.0-84000.0
Percentage of GainLossReclassifiedFromOtherComprehensiveIncomeNoncashAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:IncreaseDecreaseInNoncurrentDepositAssetsAndOtherAssets

save:IncreaseDecreaseInNoncurrentDepositAssetsAndOtherAssets


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value10-4.998160.666
Percentage of IncreaseDecreaseInNoncurrentDepositAssetsAndOtherAssets100.0100.0100.0100.0

save:IncreaseDecreaseInPrepaidMaintenanceReserves

save:IncreaseDecreaseInPrepaidMaintenanceReserves


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-3.861-1.7551.312-13.79-12.5841.33-37.4088.7413.6552.559-3.4760.6793.622-14.8449.508105.166127.578.57817121412-7.696122.9714-0.3751413-6.4759.8386.803
Percentage of IncreaseDecreaseInPrepaidMaintenanceReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:InterestIncomeWeightedAverageFixedRate us-gaap:InvestmentType

save:InterestIncomeWeightedAverageFixedRate

us-gaap:AvailableforsaleSecurities


Interest
Period End2021-06-302021-03-312020-12-31
Value00.1-0.2
Percentage of InterestIncomeWeightedAverageFixedRate0.0100.0100.0

save:InvoluntaryTerminatedEmployeesReductionDueToVoluntaryLeaveProgramPercent us-gaap:SubsequentEventType, us-gaap:UnusualOrInfrequentItem

save:InvoluntaryTerminatedEmployeesReductionDueToVoluntaryLeaveProgramPercent

us-gaap:SubsequentEvent, save:COVID19Pandemic


Involuntary
Period End2020-10-02
Value95.0
Percentage of InvoluntaryTerminatedEmployeesReductionDueToVoluntaryLeaveProgramPercent100.0

save:InvoluntaryTerminatedEmployeesReductionDueToVoluntaryLeaveProgramPercent us-gaap:UnusualOrInfrequentItem

save:COVID19Pandemic


Involuntary
Period End2020-10-02
Value95.0
Percentage of InvoluntaryTerminatedEmployeesReductionDueToVoluntaryLeaveProgramPercent100.0

save:NumberOfConsecutiveDaysRequiredForTradingDaysForConversionPriceThreshold us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:NumberOfConsecutiveDaysRequiredForTradingDaysForConversionPriceThreshold

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Number
Period End2021-04-30
Value30.0
Percentage of NumberOfConsecutiveDaysRequiredForTradingDaysForConversionPriceThreshold100.0

save:NumberOfTradingDaysRequiredForConversionPriceThreshold us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:NumberOfTradingDaysRequiredForConversionPriceThreshold

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Number
Period End2021-04-30
Value20.0
Percentage of NumberOfTradingDaysRequiredForConversionPriceThreshold100.0

save:OperatingLeaseObligationsIncurred

save:OperatingLeaseObligationsIncurred


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value18582406.813358538029311280.00.00.0
Percentage of OperatingLeaseObligationsIncurred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

save:OtherComprehensiveIncomeLossSecuritiesAvailableForSaleCashAndCashEquivalentsUnrealizedHoldingGainLossArisingDuringPeriodAfterTax

save:OtherComprehensiveIncomeLossSecuritiesAvailableForSaleCashAndCashEquivalentsUnrealizedHoldingGainLossArisingDuringPeriodAfterTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-61000.0-162000.018000.0185000.06000.0-68000.098000.0130000.0
Percentage of OtherComprehensiveIncomeLossSecuritiesAvailableForSaleCashAndCashEquivalentsUnrealizedHoldingGainLossArisingDuringPeriodAfterTax100.0100.0100.0100.0100.0100.0100.0100.0

save:OtherComprehensiveIncomeLossSecuritiesAvailableForSaleCashAndCashEquivalentsUnrealizedHoldingGainLossArisingDuringPeriodTax

save:OtherComprehensiveIncomeLossSecuritiesAvailableForSaleCashAndCashEquivalentsUnrealizedHoldingGainLossArisingDuringPeriodTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-13000.0-47000.05000.054000.0-9000.0-20000.029000.039000.0
Percentage of OtherComprehensiveIncomeLossSecuritiesAvailableForSaleCashAndCashEquivalentsUnrealizedHoldingGainLossArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0

save:PaymentForDebtExtinguishmentAccruedInterestPaid us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:PaymentForDebtExtinguishmentAccruedInterestPaid

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:ConvertibleDebt


Payment
Period End2021-06-30
Value1500000.0
Percentage of PaymentForDebtExtinguishmentAccruedInterestPaid100.0

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Payment
Period End2021-06-30
Value3200000.0
Percentage of PaymentForDebtExtinguishmentAccruedInterestPaid213.3

save:PaymentForDebtExtinguishmentPremiumPaid us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:PaymentForDebtExtinguishmentPremiumPaid

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:ConvertibleDebt


Payment
Period End2021-06-30
Value27
Percentage of PaymentForDebtExtinguishmentPremiumPaid100.0

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Payment
Period End2021-06-30
Value290
Percentage of PaymentForDebtExtinguishmentPremiumPaid1068.8

save:PaymentsForPreDeliveryDepositsForFlightEquipmentNetOfRefunds

save:PaymentsForPreDeliveryDepositsForFlightEquipmentNetOfRefunds


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value2852-10.1330.030123-67.09893373745405041274234446448105054162050-0.15321207328214.621155.80911-5.1470.409267.103
Percentage of PaymentsForPreDeliveryDepositsForFlightEquipmentNetOfRefunds100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:PaymentsToAcquirePropertyPlantAndEquipmentExcludingConstructionInProcess

save:PaymentsToAcquirePropertyPlantAndEquipmentExcludingConstructionInProcess


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4739475199195220-40.3069163
Percentage of PaymentsToAcquirePropertyPlantAndEquipmentExcludingConstructionInProcess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:ProceedsExpectedFromGovernmentAssistance us-gaap:StatementScenario, us-gaap:UnusualOrInfrequentItem

save:ProceedsExpectedFromGovernmentAssistance

srt:ScenarioForecast, save:PayrollSupportProgram2CARESAct


Proceeds
Period End2021-04-30
Value27
Percentage of ProceedsExpectedFromGovernmentAssistance100.0

srt:ScenarioForecast, save:PayrollSupportProgram3CARESAct


Proceeds
Period End2021-04-30
Value197
Percentage of ProceedsExpectedFromGovernmentAssistance714.4

save:ProceedsExpectedFromPayrollSupportProgram us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:ProceedsExpectedFromPayrollSupportProgram

save:PayrollSupportProgramLowInterestLoan, us-gaap:NotesPayableOtherPayables


Proceeds
Period End2020-12-31
Value25
Percentage of ProceedsExpectedFromPayrollSupportProgram100.0

save:ProceedsExpectedFromPayrollSupportProgram us-gaap:UnusualOrInfrequentItem

save:PayrollSupportProgram2PSP2


Proceeds
Period End2020-12-31
Value184
Percentage of ProceedsExpectedFromPayrollSupportProgram738.0

save:ProceedsFromPayrollSupportProgram us-gaap:StatementScenario

save:ProceedsFromPayrollSupportProgram

srt:ScenarioForecast


Proceeds
Period End2020-07-31
Value33
Percentage of ProceedsFromPayrollSupportProgram100.0

save:ProceedsFromPayrollSupportProgramRecordedAsDeferredPayrollLiability us-gaap:UnusualOrInfrequentItem

save:ProceedsFromPayrollSupportProgramRecordedAsDeferredPayrollLiability

save:CARESAct


Proceeds
Period End2020-09-302020-06-30
Value142237
Percentage of ProceedsFromPayrollSupportProgramRecordedAsDeferredPayrollLiability100.0100.0

save:ProceedsFromPayrollSupportProgramRecordedAsSpecialCredits us-gaap:UnusualOrInfrequentItem

save:ProceedsFromPayrollSupportProgramRecordedAsSpecialCredits

save:PayrollSupportProgram2GrantCARESAct


Proceeds
Period End2021-06-302021-03-31
Value175156
Percentage of ProceedsFromPayrollSupportProgramRecordedAsSpecialCredits100.0100.0

save:PayrollSupportProgram3GrantCARESAct


Proceeds
Period End2021-06-30
Value80
Percentage of ProceedsFromPayrollSupportProgramRecordedAsSpecialCredits45.9

save:PayrollSupportProgramGrantCARESAct


Proceeds
Period End2020-07-31
Value267
Percentage of ProceedsFromPayrollSupportProgramRecordedAsSpecialCredits0.0

save:ProceedsReceivedFromGovernmentAssistance us-gaap:UnusualOrInfrequentItem

save:ProceedsReceivedFromGovernmentAssistance

save:PayrollSupportProgram2CARESAct


Proceeds
Period End2021-06-302021-03-31
Value27184
Percentage of ProceedsReceivedFromGovernmentAssistance100.0100.0

save:PayrollSupportProgram3CARESAct


Proceeds
Period End2021-06-30
Value197
Percentage of ProceedsReceivedFromGovernmentAssistance717.0

save:PayrollSupportProgram3GrantCARESAct


Proceeds
Period End2021-06-30
Value167
Percentage of ProceedsReceivedFromGovernmentAssistance605.1

save:PayrollSupportProgramCARESAct


Proceeds
Period End2020-12-31
Value0.0
Percentage of ProceedsReceivedFromGovernmentAssistance0.0

save:ProceedsReceivedFromPayrollSupportProgram us-gaap:SubsequentEventType, us-gaap:UnusualOrInfrequentItem

save:ProceedsReceivedFromPayrollSupportProgram

us-gaap:SubsequentEvent, save:PayrollSupportProgramGrant


Proceeds
Period End2021-01-31
Value92
Percentage of ProceedsReceivedFromPayrollSupportProgram100.0

save:ProceedsReceivedFromPayrollSupportProgram us-gaap:UnusualOrInfrequentItem

save:PayrollSupportProgram


Proceeds
Period End2020-07-31
Value334
Percentage of ProceedsReceivedFromPayrollSupportProgram0.0

save:PayrollSupportProgramGrant


Proceeds
Period End2020-09-302020-07-31
Value6.6260
Percentage of ProceedsReceivedFromPayrollSupportProgram0.00.0

save:ProvisionForDoubtfulAccountsNetOfRecoveries

save:ProvisionForDoubtfulAccountsNetOfRecoveries


Provision
Period End2021-06-302021-03-312020-09-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value340000.0-170000.0-23000.0001000.00-5000.0-7000.00-2000.0-21000.0-30000.0-133000.0-8000.0196000.025000.05000.0-1000.0-23000.031000.018000.0-30000.0-20000.0-13000.015000.0-28000.0
Percentage of ProvisionForDoubtfulAccountsNetOfRecoveries100.0100.0100.00.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:Reimbursementforairportconstruction

save:Reimbursementforairportconstruction


Reimbursementforairportconstruction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value373000.0586000.0656000.01175000.0227000.02095000.0229000.03154000.01973000.0262000.0501000.0000
Percentage of Reimbursementforairportconstruction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

save:RepaymentsofCapitalLeaseObligations

save:RepaymentsofCapitalLeaseObligations


Repaymentsof
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.190.1910.174240.939931.5570.2390.1540.1632050.1970.1340.172
Percentage of RepaymentsofCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:SeveranceCostsAndCostsForVoluntarySeparations us-gaap:UnusualOrInfrequentItem

save:SeveranceCostsAndCostsForVoluntarySeparations

save:COVID19Pandemic


Severance
Period End2021-03-312020-09-30
Value800000.02400000.0
Percentage of SeveranceCostsAndCostsForVoluntarySeparations100.0100.0

save:PayrollSupportProgram2CARESAct


Severance
Period End2021-06-30
Value600000.0
Percentage of SeveranceCostsAndCostsForVoluntarySeparations0.0

save:SpecialChargesCredits

save:SpecialChargesCredits


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-115.002-176.938-2.542-148.308-151.9110.7170.00.00.00.265-0.6860.174890.07.8530.04.7765.587.3558.052160.0-0.0760.3240.4250.00.0180.0170.009
Percentage of SpecialChargesCredits100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

save:SpecialChargesCredits us-gaap:UnusualOrInfrequentItem

save:CARESAct


Special
Period End2020-09-302020-06-30
Value142123
Percentage of SpecialChargesCredits-96.4-81.6

save:CARESActEmployeeRetentionCredit


Special
Period End2021-06-302021-03-312020-09-302020-06-30
Value16217.828
Percentage of SpecialChargesCredits-14.2-12.0-5.3-18.4

save:PayrollSupportProgramTwoAndThreeGrantCARESAct


Special
Period End2021-06-30
Value99
Percentage of SpecialChargesCredits-86.3

save:StockAndWarrantsIssuedDuringPeriodValueNewIssues

save:StockAndWarrantsIssuedDuringPeriodValueNewIssues


Stock
Period End2021-06-302020-06-30
Value373194
Percentage of StockAndWarrantsIssuedDuringPeriodValueNewIssues100.0100.0

save:StockAndWarrantsIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302020-06-30
Value373194
Percentage of StockAndWarrantsIssuedDuringPeriodValueNewIssues100.0100.0

us-gaap:CommonStock


Stock
Period End2021-06-302020-06-30
Value0.0010.02
Percentage of StockAndWarrantsIssuedDuringPeriodValueNewIssues0.00.0

save:TaxLossCarrybacksDueToCOVID19

save:TaxLossCarrybacksDueToCOVID19


Tax
Period End2020-12-31
Value1.2
Percentage of TaxLossCarrybacksDueToCOVID19100.0

us-gaap:AccretionExpense

us-gaap:AccretionExpense


Accretion
Period End2021-06-302021-03-312020-12-312020-09-30
Value0.3190.4344.243.869
Percentage of AccretionExpense100.0100.0100.0100.0

us-gaap:AccretionExpense us-gaap:LongtermDebtType

us-gaap:SecuredDebt


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.30.40.40.12.0
Percentage of AccretionExpense94.092.29.42.60.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued


Adjustments
Period End2021-03-31
Value2146000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-03-31
Value2146000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued us-gaap:UnusualOrInfrequentItem

save:CARESAct


Adjustments
Period End2020-12-312020-09-302020-06-30
Value3900000.03900000.02500000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued0.00.00.0

save:PayrollSupportProgram2CARESAct


Adjustments
Period End2021-06-302021-03-31
Value700000.02100000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued0.097.9

us-gaap:AircraftMaintenanceMaterialsAndRepairs

us-gaap:AircraftMaintenanceMaterialsAndRepairs


Aircraft
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value39292928193441363431293731292826282626302020182121191719191716161511121413108.575117.488.0587.5458.2385.714
Percentage of AircraftMaintenanceMaterialsAndRepairs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AircraftRental

us-gaap:AircraftRental


Aircraft
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value645452494945504046454342415042535257504949525253535251504846444241413737363230292927282524
Percentage of AircraftRental100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:AmortizationOfFinancingCostsAndDiscounts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value3.2743.5093.4152.7042.5262.1062.172.1752.1772.1922.1391.7841.6551.4911.3971.3621.291.2311.1460.9790.7940.5160.4360.340.230.159-0.1850.00.0-0.089-0.195
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

us-gaap:CapitalLeaseObligationsIncurred

us-gaap:CapitalLeaseObligationsIncurred


Capital
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.00.00.5650.0-50.7630.0941.4920.6720.0-236.7272370.00.01.240.130.00.00.00.031
Percentage of CapitalLeaseObligationsIncurred0.00.0100.00.0100.00.0100.0100.0100.00.0100.0100.00.00.0100.0100.00.00.00.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:CollectiveBargainingArrangement, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ConcentrationRiskPercentage1

save:AirLinePilotsAssociationInternational, us-gaap:NumberOfEmployeesTotal, us-gaap:UnionizedEmployeesConcentrationRisk


Concentration
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-09-302016-06-302016-03-312015-03-312014-03-312013-03-31
Value29.00.270.260.270.260.260.260.260.260.240.22
Percentage of ConcentrationRiskPercentage1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:AssociationOfFlightAttendants, us-gaap:NumberOfEmployeesTotal, us-gaap:UnionizedEmployeesConcentrationRisk


Concentration
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-09-302016-06-302016-03-312015-03-312014-03-312013-03-31
Value46.00.470.450.440.420.420.430.430.370.350.33
Percentage of ConcentrationRiskPercentage1158.6174.1173.1163.0161.5161.5165.4165.4142.3145.8150.0

save:InternationalAssociationOfMachinistsAndAerospaceWorkers, us-gaap:NumberOfEmployeesTotal, us-gaap:UnionizedEmployeesConcentrationRisk


Concentration
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-09-302016-06-302016-03-312015-03-31
Value3.00.030.040.030.040.030.040.040.06
Percentage of ConcentrationRiskPercentage110.311.115.411.115.411.515.415.423.1

save:ProfessionalAirlineFlightControlAssociation, us-gaap:NumberOfEmployeesTotal, us-gaap:UnionizedEmployeesConcentrationRisk


Concentration
Period End2021-03-312020-03-312019-03-312018-03-31
Value1.00.010.010.01
Percentage of ConcentrationRiskPercentage13.43.73.83.7

save:TransportWorkersUnion, us-gaap:NumberOfEmployeesTotal, us-gaap:UnionizedEmployeesConcentrationRisk


Concentration
Period End2021-03-312020-03-312019-03-312017-03-312016-09-302016-06-302016-03-312015-03-312014-03-312013-03-31
Value3.00.030.030.010.010.010.010.010.010.01
Percentage of ConcentrationRiskPercentage110.311.111.53.83.83.83.83.84.24.5

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:NumberOfEmployeesTotal, us-gaap:UnionizedEmployeesConcentrationRisk


Concentration
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-31
Value82.00.810.790.750.730.740.70.60.56
Percentage of ConcentrationRiskPercentage1282.8300.0303.8277.8280.8284.6269.2250.0254.5

us-gaap:DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Debt
Period End2021-03-312020-12-312020-09-30
Value2652261
Percentage of DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal100.0100.0100.0

us-gaap:ExtinguishmentOfDebtAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ExtinguishmentOfDebtAmount

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:SecuredDebt


Extinguishment
Period End2021-06-30
Value340
Percentage of ExtinguishmentOfDebtAmount100.0

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Extinguishment
Period End2021-06-30
Value146
Percentage of ExtinguishmentOfDebtAmount43.2

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value24000.024000.027000.029000.026000.0113000.033000.0302000.0309000.029000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


Finance
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-312018-06-302018-03-31
Value24000.024000.026000.0113000.01247000.0210000.000
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0100.0100.00.00.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value208000.0189000.027000.028000.026000.0113000.033000.0302000.0310000.029000.0000
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value176000.0168000.0385000.0169000.0135000.0135000.0135000.0135000.0519000.0210000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FuelCosts

us-gaap:FuelCosts


Fuel
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2141421039419213244253265229229258246204175158142139126121113851051151271121381711541481391441351311201221201089410410780706360
Percentage of FuelCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GainLossOnDispositionOfAssets


Gain
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value-189000.0-1117000.000-477000.0-13410000.0-1550000.0-1913000.0-3019000.0-1069000.0-4644000.0-848000.0-1054000.0-516000.0-1493000.0-1105000.0-3021000.0-423000.0-529000.0-214000.0-304000.0-290000.0-415000.0-595000.0-1350000.0-793000.0-715000.0-150000.0-99000.0-165000.0-91000.0-170000.0-474000.00-33000.0-449000.0-216000.0-4000.0-35000.000-28000.0
Percentage of GainLossOnDispositionOfAssets100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value4157-8.242-4.88422-39.912.435-6.7537.1823-15.8654.9796.2292.9833.088-1.762-0.7187.5265.111-4.8228.4334.229-4.7822.2372.6935.444-3.812-10.9823.53210-4.577-5.185
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value98107-27.926-22.1314095-45.808-41.772-0.011111-31.646-34.020.45393-30.112
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredCharges

us-gaap:IncreaseDecreaseInDeferredCharges


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value11109.0348.892135523444446827435066-16.159189.558
Percentage of IncreaseDecreaseInDeferredCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDepositOtherAssets

us-gaap:IncreaseDecreaseInDepositOtherAssets


Increase
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.906-5.679160.666-39.4733410-20.735-0.9578.7630.509-3.512-30.8193623213221138.49559334.776.16119.4291115280.7582411
Percentage of IncreaseDecreaseInDepositOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-30
Value0.242-109.9880.4990.04283-0.68210.00.0-78.5067.834690.0
Percentage of IncreaseDecreaseInIncomeTaxesReceivable100.0100.0100.00.0100.0100.0100.0100.00.00.0100.0100.0100.00.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value12836391-51.663-75.541-95.233-51.323-24.5583050-59.913-33.97117141.918130.2988.79513-8.02733-3.726-21.4829.68429-8.40514-8.3181618-14.171-4.76924
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidTaxes

us-gaap:IncreaseDecreaseInPrepaidTaxes


Increase
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-251000.0303000.00531000.00000-160000.0-1438000.0752000.0846000.0-6060000.03226000.02834000.0-72278000.00000
Percentage of IncreaseDecreaseInPrepaidTaxes100.0100.00.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:InterestCostsCapitalizedAdjustment

us-gaap:InterestCostsCapitalizedAdjustment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value4.6314.7324.5654.0093.7573.6643.5393.42.9752.5572.6362.6572.2962.2523.6683.2033.3423.583.5423.0672.7713.3253.1613.032.8292.5331.6590.8780.1030.1070.0740.0360.0950.0090.0060.010.7940.540.3710.444
Percentage of InterestCostsCapitalizedAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestCostsIncurred

us-gaap:InterestCostsIncurred


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value3944493327232525252423212017161513121211108.067.25.9514.4192.8121.6590.8780.1030.1070.0740.0360.095
Percentage of InterestCostsIncurred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidCapitalized

us-gaap:InterestPaidCapitalized


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4.7134.3423.0762.8683.4292.863.0672.7712.662.2762.6131.9382.6781.54.2511.6794.7281.6473.8022.4781.9792.5757.452-0.0561.0631.7
Percentage of InterestPaidCapitalized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.3734.3710.3180.4541.9493.5934.8516.2927.0666.9245.8354.7764.434.0662.992.6051.8281.3131.0411.2221.4471.5661.5810.2330.1770.1340.1010.0840.0830.0680.0930.0870.1050.1160.1590.1710.180.4150.3190.0990.0710.0860.0860.0830.099
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2572452272282132402202242162031911851871551361341291271221201121169795978981797776696664615854535248454543413938
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LandingFeesAndOtherRentals

us-gaap:LandingFeesAndOtherRentals


Landing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value817267764067626964595154584946484540373939343234333027272524222221181719171514131311121311
Percentage of LandingFeesAndOtherRentals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value110979491838387738481
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityCommitmentFeeAmount

us-gaap:LineOfCreditFacilityCommitmentFeeAmount


Line
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value604000.0428000.0551000.0110000.0228000.0218000.01817000.0281000.046000.0109000.050000.051000.052000.037000.029000.028000.030000.030000.032000.030000.035000.054000.0000
Percentage of LineOfCreditFacilityCommitmentFeeAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value52525251514742394849
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value706134425250494548470.00.00.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value-19000.07000.018000.0185000.0
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value-5000.02000.05000.054000.0
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value44000.045000.048000.041000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value13000.013000.015000.024000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax


Other
Period End2020-12-312020-09-302019-12-312019-09-30
Value-51000.0-49000.0-82000.0-57000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value25000.052000.066000.0226000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-13000.07000.0-150000.0-199000.0-321000.06000.0-68000.098000.0130000.0-40000.0-7000.0101000.0-23000.0-71000.013000.0-11000.0-13000.0-27000.04000.00000
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-4000.02000.0-44000.0-59000.094000.0-9000.0-20000.029000.039000.023000.0-5000.033000.0-8000.0-35000.07000.0-6000.08000.0-16000.03000.00000
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1149684835812912313312410995989193798710277696667645054584338393635333837343235322723232120211921
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value207000.0158000.088000.0-10000.0275000.0-235000.0-129000.0-269000.0-260000.0-164000.0-239000.0-144000.028000.0-20000.041000.0100000.0126000.0113000.0206000.0000
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherTaxExpenseBenefit us-gaap:UnusualOrInfrequentItem

us-gaap:OtherTaxExpenseBenefit

save:CARESAct


Other
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.01.22331
Percentage of OtherTaxExpenseBenefit0.0100.0100.0100.0

us-gaap:PaymentsForConstructionInProcess

us-gaap:PaymentsForConstructionInProcess


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value373000.0797000.0455000.01207000.0225000.02057000.0345000.05356000.01973000.0262000.0501000.0000
Percentage of PaymentsForConstructionInProcess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsOfDebtExtinguishmentCosts us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:PaymentsOfDebtExtinguishmentCosts

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:ConvertibleDebt


Payments
Period End2021-06-30
Value368
Percentage of PaymentsOfDebtExtinguishmentCosts100.0

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Payments
Period End2021-06-30
Value440
Percentage of PaymentsOfDebtExtinguishmentCosts119.5

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-12-312012-09-302011-12-312011-09-302010-12-312010-09-30
Value2.4440.39518173.6952.2950.00.2150.3994.0811.341.7430.2017.8441.7321.892.2740.00.00.0730.0341.19.4231.6932.9764.7270.00.00.00.00.00.00.00.0020.0
Percentage of PaymentsOfDebtIssuanceCosts100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.0100.00.0

us-gaap:PaymentsOfStockIssuanceCosts us-gaap:SubsidiarySaleOfStock

us-gaap:PaymentsOfStockIssuanceCosts

save:AtTheMarketOfferingProgram


Payments
Period End2020-12-312020-09-30
Value05000000.0
Percentage of PaymentsOfStockIssuanceCosts0.0100.0

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireMarketableSecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value3520234030242836302624264230102843243.1821000.00.00.0
Percentage of PaymentsToAcquireMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromLinesOfCredit us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ProceedsFromLinesOfCredit

us-gaap:RevolvingCreditFacility, save:RevolvingCreditFacilityDueTwoThousandTwentyFour, us-gaap:LineOfCredit


Proceeds
Period End2021-03-31
Value180
Percentage of ProceedsFromLinesOfCredit100.0

us-gaap:RevolvingCreditFacility, save:TwoThousandTwentyAmendedRevolvingCreditFacilityDueTwoThousandTwentyOne, us-gaap:LineOfCredit


Proceeds
Period End2020-12-312020-09-30
Value0.0-16.1
Percentage of ProceedsFromLinesOfCredit0.00.0

us-gaap:ProceedsFromLinesOfCredit us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:StandbyLettersOfCredit, us-gaap:LineOfCredit


Proceeds
Period End2021-06-302021-03-312020-09-30
Value26240.0
Percentage of ProceedsFromLinesOfCredit0.013.60.0

us-gaap:ProceedsFromOtherEquity

us-gaap:ProceedsFromOtherEquity


Proceeds
Period End2021-03-312020-12-312020-09-30
Value2.1460.0163
Percentage of ProceedsFromOtherEquity100.00.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3520234030232835302623264230102843242.8420.00.00.0
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value0023000.016000.0001000.0046000.03000.002000.0016000.029000.00004000.088000.009000.08000.015000.034000.077000.024000.039000.0177000.0120000.0106000.0449000.059000.0107000.090000.0213000.04000.0
Percentage of ProceedsFromStockOptionsExercised0.00.0100.0100.00.00.0100.00.0100.0100.00.0100.00.0100.0100.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfDebt


Repayments
Period End2021-03-312020-03-312019-03-312018-03-31
Value135423718
Percentage of RepaymentsOfDebt100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated us-gaap:CollectiveBargainingArrangement, us-gaap:UnusualOrInfrequentItem

us-gaap:RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated

save:USBasedUnionEmployees, save:COVID19Pandemic


Restructuring
Period End2020-07-31
Value2500.0
Percentage of RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated100.0

us-gaap:SaleOfStockConsiderationReceivedOnTransaction us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockConsiderationReceivedOnTransaction

save:AtTheMarketOfferingProgram


Sale
Period End2020-12-312020-09-30
Value0.0156
Percentage of SaleOfStockConsiderationReceivedOnTransaction0.0100.0

save:DirectPlacement


Sale
Period End2021-04-30
Value370
Percentage of SaleOfStockConsiderationReceivedOnTransaction0.0

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction us-gaap:StatementEquityComponents, us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction

us-gaap:CommonStock, save:DirectPlacement


Sale
Period End2021-04-30
Value10
Percentage of SaleOfStockNumberOfSharesIssuedInTransaction100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.0767.0154.4167.1816.8843.823-6.0324.2183.5093.449
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.0171.3070.0430.0181.5360.1080.0255.2230.1590.0270.959
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.0171.3070.0430.0181.5360.1080.0255.2230.1590.0270.959
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value50383732253251293128
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:AccruedAircraftMaintenanceLiabilitiesCurrent

save:AccruedAircraftMaintenanceLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value55302724213238304165592644473341332630391925212116
Percentage of AccruedAircraftMaintenanceLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:AccruedAirportLiabilitiesCurrent

save:AccruedAirportLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value83716857377380656465524759545647473743363934303021
Percentage of AccruedAirportLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:AccruedFuelCostsCurrent

save:AccruedFuelCostsCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value2521118.6945.25910282127282521241925147.8469.84514118.6677.5297.0849.403128.9379.5081111101312147.277119.592100.087
Percentage of AccruedFuelCostsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:AircraftMaintenanceDeposits

save:AircraftMaintenanceDeposits


Aircraft
Period End2020-12-312017-12-312016-12-312015-12-312014-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value126326286279250171161145143137122120
Percentage of AircraftMaintenanceDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:AircraftMaintenanceDepositsCurrent

save:AircraftMaintenanceDepositsCurrent


Aircraft
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value45727370759010213212412910610410795175166155125878777797336
Percentage of AircraftMaintenanceDepositsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:AircraftMaintenanceDepositsNoncurrent

save:AircraftMaintenanceDepositsNoncurrent


Aircraft
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value505053546361677984118138144141149150138146170199198201196206199217212213194185161
Percentage of AircraftMaintenanceDepositsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:CashCashEquivalentsShortTermInvestmentsAndLineOfCreditFacilityFundsDrawnAndUndrawn

save:CashCashEquivalentsShortTermInvestmentsAndLineOfCreditFacilityFundsDrawnAndUndrawn


Cash
Period End2021-06-302021-03-31
Value22101940
Percentage of CashCashEquivalentsShortTermInvestmentsAndLineOfCreditFacilityFundsDrawnAndUndrawn100.0100.0

save:ClassOfWarrantOrRightMaximumNumberOfSharesCalled us-gaap:StatementScenario

save:ClassOfWarrantOrRightMaximumNumberOfSharesCalled

srt:ScenarioForecast


Class
Period End2020-07-31
Value71321.0
Percentage of ClassOfWarrantOrRightMaximumNumberOfSharesCalled100.0

save:ContractWithCustomerLiabilityFrequentFlierProgramsCurrent

save:ContractWithCustomerLiabilityFrequentFlierProgramsCurrent


Contract
Period End2020-12-312019-12-312018-12-312017-12-31
Value31292726
Percentage of ContractWithCustomerLiabilityFrequentFlierProgramsCurrent100.0100.0100.0100.0

save:DebtCovenantMinimumLiquidityRequirement us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:DebtCovenantMinimumLiquidityRequirement

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:SecuredDebt


Debt
Period End2020-09-17
Value400
Percentage of DebtCovenantMinimumLiquidityRequirement100.0

save:DebtInstrumentRedemptionMinimumAggregatePrincipalAmountOutstandingRequiredForRedemption us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:DebtInstrumentRedemptionMinimumAggregatePrincipalAmountOutstandingRequiredForRedemption

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Debt
Period End2021-04-30
Value150
Percentage of DebtInstrumentRedemptionMinimumAggregatePrincipalAmountOutstandingRequiredForRedemption100.0

save:DeferredHeavyMaintenanceGross

save:DeferredHeavyMaintenanceGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value57050436626023820819816594
Percentage of DeferredHeavyMaintenanceGross100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:DeferredMaintenanceCostsNoncurrent

save:DeferredMaintenanceCostsNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value32333434736237637636132830928024919117213899877571757975808999108115123128129125
Percentage of DeferredMaintenanceCostsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:DeferredPaymentOfEmployerPortionOfSocialSecurityTaxesFromCARESAct

save:DeferredPaymentOfEmployerPortionOfSocialSecurityTaxesFromCARESAct


Deferred
Period End2020-12-312020-09-30
Value2317
Percentage of DeferredPaymentOfEmployerPortionOfSocialSecurityTaxesFromCARESAct100.0100.0

save:DeferredTaxAssetsAccruedMaintenance

save:DeferredTaxAssetsAccruedMaintenance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value568000.01668000.02168000.01991000.01854000.0830000.03073000.01225000.0
Percentage of DeferredTaxAssetsAccruedMaintenance100.0100.0100.0100.0100.0100.0100.0100.0

save:DeferredTaxAssetsDeferredManufacturingCredits

save:DeferredTaxAssetsDeferredManufacturingCredits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value6442000.02813000.00258000.0910000.0822000.0848000.03309000.0
Percentage of DeferredTaxAssetsDeferredManufacturingCredits100.0100.00.0100.0100.0100.0100.0100.0

save:DeferredTaxAssetsLeaseLiability

save:DeferredTaxAssetsLeaseLiability


Deferred
Period End2020-12-312019-12-31
Value313305
Percentage of DeferredTaxAssetsLeaseLiability100.0100.0

save:DeferredTaxAssetsNondeductibleReservesandAccruals

save:DeferredTaxAssetsNondeductibleReservesandAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value211414102011126.702
Percentage of DeferredTaxAssetsNondeductibleReservesandAccruals100.0100.0100.0100.0100.0100.0100.0100.0

save:DeferredTaxLiabilitiesAccruedAircraftandEngineMaintenanceExpenses

save:DeferredTaxLiabilitiesAccruedAircraftandEngineMaintenanceExpenses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value80846127406445
Percentage of DeferredTaxLiabilitiesAccruedAircraftandEngineMaintenanceExpenses100.0100.0100.0100.0100.0100.0100.0

save:DeferredTaxLiabilitiesConvertibleDebt

save:DeferredTaxLiabilitiesConvertibleDebt


Deferred
Period End2020-12-31
Value14
Percentage of DeferredTaxLiabilitiesConvertibleDebt100.0

save:DeferredTaxLiabilitiesLeaseRightOfUseAsset

save:DeferredTaxLiabilitiesLeaseRightOfUseAsset


Deferred
Period End2020-12-312019-12-31
Value318310
Percentage of DeferredTaxLiabilitiesLeaseRightOfUseAsset100.0100.0

save:EmployeeRelatedLiabilitiesCurrentPayrollSupportProgramGrant

save:EmployeeRelatedLiabilitiesCurrentPayrollSupportProgramGrant


Employee
Period End2021-06-302020-06-302019-12-31
Value861140.0
Percentage of EmployeeRelatedLiabilitiesCurrentPayrollSupportProgramGrant100.0100.00.0

save:FederalExciseAndOtherPassengerTaxesAndFeesPayableCurrent

save:FederalExciseAndOtherPassengerTaxesAndFeesPayableCurrent


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value107102363322166568979060557855424362594241585138384847424236372624342723202717
Percentage of FederalExciseAndOtherPassengerTaxesAndFeesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:FederalNetOperatingLossCarryback us-gaap:UnusualOrInfrequentItem

save:FederalNetOperatingLossCarryback

save:CARESAct


Federal
Period End2020-12-31
Value56
Percentage of FederalNetOperatingLossCarryback100.0

save:FinanceAndOperatingLeasesLiability

save:FinanceAndOperatingLeasesLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value1573144714111383
Percentage of FinanceAndOperatingLeasesLiability100.0100.0100.0100.0

save:FinanceAndOperatingLeasesLiabilityCurrent

save:FinanceAndOperatingLeasesLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value145135134131
Percentage of FinanceAndOperatingLeasesLiabilityCurrent100.0100.0100.0100.0

save:FinanceAndOperatingLeasesLiabilityNoncurrent

save:FinanceAndOperatingLeasesLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value1428131112761252
Percentage of FinanceAndOperatingLeasesLiabilityNoncurrent100.0100.0100.0100.0

save:FinanceAndOperatingLeasesLiabilityUndiscountedExcessAmount

save:FinanceAndOperatingLeasesLiabilityUndiscountedExcessAmount


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value773724697690
Percentage of FinanceAndOperatingLeasesLiabilityUndiscountedExcessAmount100.0100.0100.0100.0

save:FinanceLeaseLiabilityToBePaidAfterYearFour

save:FinanceLeaseLiabilityToBePaidAfterYearFour


Finance
Period End2021-06-30
Value39000.0
Percentage of FinanceLeaseLiabilityToBePaidAfterYearFour100.0

save:FlightVouchersPledgedForMinorityOrganizationsDueToCOVID19Value

save:FlightVouchersPledgedForMinorityOrganizationsDueToCOVID19Value


Flight
Period End2020-09-30
Value250000.0
Percentage of FlightVouchersPledgedForMinorityOrganizationsDueToCOVID19Value100.0

save:LesseeFinanceAndOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

save:LesseeFinanceAndOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302021-03-312020-09-30
Value12118335
Percentage of LesseeFinanceAndOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

save:LesseeFinanceAndOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear us-gaap:BalanceSheetLocation, us-gaap:UnusualOrInfrequentItem

us-gaap:OtherCurrentLiabilities, save:COVID19Pandemic


Lessee
Period End2021-06-30
Value5.2
Percentage of LesseeFinanceAndOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear4.3

save:LesseeFinanceAndOperatingLeaseLiabilityToBePaidYearOne

save:LesseeFinanceAndOperatingLeaseLiabilityToBePaidYearOne


Lessee
Period End2020-12-31
Value241
Percentage of LesseeFinanceAndOperatingLeaseLiabilityToBePaidYearOne100.0

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDue

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value2347217121082074
Percentage of LesseeFinanceAndOperatingLeasesLiabilityPaymentsDue100.0100.0100.0100.0

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueAfterYearFive

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value1118
Percentage of LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueAfterYearFive100.0

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearFive

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value154
Percentage of LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearFive100.0

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearFour

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value178
Percentage of LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearFour100.0

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearThree

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value200
Percentage of LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearThree100.0

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearTwo

save:LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value215
Percentage of LesseeFinanceAndOperatingLeasesLiabilityPaymentsDueYearTwo100.0

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidAfterYearFour

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidAfterYearFour


Lessee
Period End2021-06-302021-03-312020-09-30
Value139112151220
Percentage of LesseeFinanceAndOperatingLeasesLiabilityToBePaidAfterYearFour100.0100.0100.0

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearFour

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearFour


Lessee
Period End2021-06-302021-03-312020-09-30
Value176161174
Percentage of LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearFour100.0100.0100.0

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearOne

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearOne


Lessee
Period End2021-06-302021-03-312020-09-30
Value233217236
Percentage of LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearOne100.0100.0100.0

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearOne us-gaap:BalanceSheetLocation, us-gaap:UnusualOrInfrequentItem

us-gaap:OtherCurrentLiabilities, save:COVID19Pandemic


Lessee
Period End2021-03-312020-09-30
Value198.4
Percentage of LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearOne9.13.6

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearThree

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearThree


Lessee
Period End2021-06-302021-03-312020-09-30
Value200184197
Percentage of LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearThree100.0100.0100.0

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearTwo

save:LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearTwo


Lessee
Period End2021-06-302021-03-312020-09-30
Value223208211
Percentage of LesseeFinanceAndOperatingLeasesLiabilityToBePaidYearTwo100.0100.0100.0

save:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour save:RightOfUseAssetType

save:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

save:AircraftAndSpareEngineLeases


Lessee
Period End2021-06-302021-03-312020-09-302020-06-30
Value1248107210751065
Percentage of LesseeOperatingLeaseLiabilityToBePaidAfterYearFour100.0100.0100.0100.0

save:PropertyFacilityLeases


Lessee
Period End2021-06-302021-03-312020-09-302020-06-30
Value143143144144
Percentage of LesseeOperatingLeaseLiabilityToBePaidAfterYearFour11.513.313.413.5

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFive us-gaap:AircraftType, us-gaap:CounterpartyName

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFive

srt:A320Neo, save:ThirdPartyLessor


Lessee
Period End2020-12-31
Value255
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFive100.0

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFour us-gaap:AircraftType, us-gaap:CounterpartyName

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFour

save:A320Family, save:ThirdPartyLessor


Lessee
Period End2021-06-302021-03-312020-09-30
Value198220286
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFour100.0100.0100.0

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredRemainderOfFiscalYear us-gaap:AircraftType, us-gaap:CounterpartyName

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredRemainderOfFiscalYear

save:A320Family, save:ThirdPartyLessor


Lessee
Period End2021-06-302021-03-31
Value8.713
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredRemainderOfFiscalYear100.0100.0

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFive us-gaap:AircraftType, us-gaap:CounterpartyName

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFive

srt:A320Neo, save:ThirdPartyLessor


Lessee
Period End2020-12-31
Value34
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFive100.0

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFour us-gaap:AircraftType, us-gaap:CounterpartyName

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFour

save:A320Family, save:ThirdPartyLessor


Lessee
Period End2021-06-302021-03-312020-09-30
Value252933
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFour100.0100.0100.0

srt:A320Neo, save:ThirdPartyLessor


Lessee
Period End2020-12-31
Value34
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFour0.0

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearOne us-gaap:AircraftType, us-gaap:CounterpartyName

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearOne

save:A320Family, save:ThirdPartyLessor


Lessee
Period End2021-06-302021-03-312020-09-30
Value252918
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearOne100.0100.0100.0

srt:A320Neo, save:ThirdPartyLessor


Lessee
Period End2020-12-31
Value18
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearOne0.0

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearThree us-gaap:AircraftType, us-gaap:CounterpartyName

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearThree

save:A320Family, save:ThirdPartyLessor


Lessee
Period End2021-06-302021-03-312020-09-30
Value252933
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearThree100.0100.0100.0

srt:A320Neo, save:ThirdPartyLessor


Lessee
Period End2020-12-31
Value34
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearThree0.0

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearTwo us-gaap:AircraftType, us-gaap:CounterpartyName

save:LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearTwo

save:A320Family, save:ThirdPartyLessor


Lessee
Period End2021-06-302021-03-312020-09-30
Value252933
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearTwo100.0100.0100.0

srt:A320Neo, save:ThirdPartyLessor


Lessee
Period End2020-12-31
Value34
Percentage of LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearTwo0.0

save:LesseeShorttermOperatingLeaseRemainderofFiscalYear

save:LesseeShorttermOperatingLeaseRemainderofFiscalYear


Lessee
Period End2021-06-302021-03-312020-09-30
Value2200000.02200000.02300000.0
Percentage of LesseeShorttermOperatingLeaseRemainderofFiscalYear100.0100.0100.0

save:LettersofCreditLimitAmount us-gaap:CreditFacility, us-gaap:LongtermDebtType

save:LettersofCreditLimitAmount

us-gaap:StandbyLettersOfCredit, us-gaap:UnsecuredDebt


Lettersof
Period End2020-12-31
Value30
Percentage of LettersofCreditLimitAmount100.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFive

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFive


Long
Period End2020-12-31
Value103
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFive100.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFour us-gaap:LongtermDebtType

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFour

save:NonAircraftRelatedSecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2021-06-302021-03-31
Value1911
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFour100.0100.0

save:SecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2020-09-30
Value74
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFour0.0

us-gaap:SecuredDebt


Long
Period End2020-09-302020-06-30
Value135131
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFour0.00.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidRemainderOfFiscalYear us-gaap:LongtermDebtType

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidRemainderOfFiscalYear

save:AircraftRelatedSecuredDebt


Long
Period End2021-06-302021-03-31
Value4959
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidRemainderOfFiscalYear100.0100.0

save:NonAircraftRelatedSecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2021-06-302021-03-31
Value2460
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidRemainderOfFiscalYear50.0101.2

save:SecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2020-09-30
Value4.2
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidRemainderOfFiscalYear0.0

us-gaap:SecuredDebt


Long
Period End2020-09-302020-06-30
Value2140
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidRemainderOfFiscalYear0.00.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFive

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFive


Long
Period End2020-12-31
Value110
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFive100.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour


Long
Period End2020-12-31
Value126
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour100.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour us-gaap:LongtermDebtType

save:NonAircraftRelatedSecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2021-06-302021-03-31
Value4568
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour0.00.0

save:SecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2020-09-30
Value77
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour0.0

us-gaap:SecuredDebt


Long
Period End2020-09-302020-06-30
Value4847
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour0.00.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne


Long
Period End2020-12-31
Value162
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne100.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne us-gaap:LongtermDebtType

save:NonAircraftRelatedSecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2021-06-302021-03-31
Value4877
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne0.00.0

save:SecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2020-09-30
Value83
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne0.0

us-gaap:SecuredDebt


Long
Period End2020-09-302020-06-30
Value7776
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne0.00.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree


Long
Period End2020-12-31
Value138
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree100.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree us-gaap:LongtermDebtType

save:NonAircraftRelatedSecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2021-06-302021-03-31
Value4877
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree0.00.0

save:SecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2020-09-30
Value77
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree0.0

us-gaap:SecuredDebt


Long
Period End2020-09-302020-06-30
Value6058
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree0.00.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo


Long
Period End2020-12-31
Value148
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo100.0

save:LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo us-gaap:LongtermDebtType

save:NonAircraftRelatedSecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2021-06-302021-03-31
Value4877
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo0.00.0

save:SecuredDebtUnsecuredDebtAndConvertibleDebt


Long
Period End2020-09-30
Value77
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo0.0

us-gaap:SecuredDebt


Long
Period End2020-09-302020-06-30
Value7069
Percentage of LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo0.00.0

save:LongTermDebtMaturityAfterYearFour

save:LongTermDebtMaturityAfterYearFour


Long
Period End2021-06-302021-03-312020-09-30
Value171211752331
Percentage of LongTermDebtMaturityAfterYearFour100.0100.0100.0

save:MaximumPotentialExposureToCashHoldbacksFromCreditCardProcessors

save:MaximumPotentialExposureToCashHoldbacksFromCreditCardProcessors


Maximum
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value728600423412417375342399450455321341403406286322364362234281335311250274314303217265188203236197144152159115
Percentage of MaximumPotentialExposureToCashHoldbacksFromCreditCardProcessors100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

save:NumberOfEmployeesOnVoluntaryLeaveReturnedToWorkPercent us-gaap:UnusualOrInfrequentItem

save:NumberOfEmployeesOnVoluntaryLeaveReturnedToWorkPercent

save:COVID19Pandemic


Number
Period End2021-03-31
Value12.0
Percentage of NumberOfEmployeesOnVoluntaryLeaveReturnedToWorkPercent100.0

save:NumberOfWarrantsIssuedAsAPercentOfOutstandingCommonStock us-gaap:DebtInstrument

save:NumberOfWarrantsIssuedAsAPercentOfOutstandingCommonStock

save:CARESAct


Number
Period End2021-03-31
Value1.0
Percentage of NumberOfWarrantsIssuedAsAPercentOfOutstandingCommonStock100.0

save:PayrollSupportProgramLowInterestLoan


Number
Period End2020-12-312020-09-302020-04-29
Value1.01.00.01
Percentage of NumberOfWarrantsIssuedAsAPercentOfOutstandingCommonStock0.00.00.0

save:NumberofAircraftwithSecuredDebtFinancingCommitmentsScheduledforDelivery us-gaap:AircraftType, us-gaap:StatementScenario

save:NumberofAircraftwithSecuredDebtFinancingCommitmentsScheduledforDelivery

srt:A320Neo, srt:ScenarioForecast


Numberof
Period End2021-12-31
Value43.0
Percentage of NumberofAircraftwithSecuredDebtFinancingCommitmentsScheduledforDelivery100.0

save:PrincipalAmountPortionForTradingPriceThreshold us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:PrincipalAmountPortionForTradingPriceThreshold

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Principal
Period End2021-04-30
Value1000.0
Percentage of PrincipalAmountPortionForTradingPriceThreshold100.0

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidAfterYearFour

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidAfterYearFour


Principal
Period End2020-09-30
Value33
Percentage of PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidAfterYearFour100.0

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearFour

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearFour


Principal
Period End2020-09-30
Value3900000.0
Percentage of PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearFour100.0

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearOne

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearOne


Principal
Period End2020-09-30
Value4600000.0
Percentage of PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearOne100.0

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearThree

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearThree


Principal
Period End2020-09-30
Value3600000.0
Percentage of PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearThree100.0

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearTwo

save:PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearTwo


Principal
Period End2020-09-30
Value3500000.0
Percentage of PrincipalAndInterestCommitmentsRelatedToFutureSecuredDebtToBePaidYearTwo100.0

save:ProceedsFromPayrollSupportProgramRecordedAsDeferredSalariesWagesAndBenefits us-gaap:UnusualOrInfrequentItem

save:ProceedsFromPayrollSupportProgramRecordedAsDeferredSalariesWagesAndBenefits

save:PayrollSupportProgram3CARESAct


Proceeds
Period End2021-06-30
Value86
Percentage of ProceedsFromPayrollSupportProgramRecordedAsDeferredSalariesWagesAndBenefits100.0

save:RestrictedCashFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

save:RestrictedCashFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6264715430
Percentage of RestrictedCashFairValueDisclosure100.0100.0100.0100.0100.0

save:RestrictedCashFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6264715430
Percentage of RestrictedCashFairValueDisclosure100.0100.0100.0100.0100.0

save:SharesConversionRatePerPortionOfPrincipalAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:SharesConversionRatePerPortionOfPrincipalAmount

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Shares
Period End2021-04-30
Value20.379
Percentage of SharesConversionRatePerPortionOfPrincipalAmount100.0

save:UnrecordedUnconditionalPurchaseObligationToBePaidAfterYearFour us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

save:UnrecordedUnconditionalPurchaseObligationToBePaidAfterYearFour

save:NonaircraftRelatedCommitments


Unrecorded
Period End2021-06-302021-03-312020-09-302020-06-30
Value35355050
Percentage of UnrecordedUnconditionalPurchaseObligationToBePaidAfterYearFour100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2021-06-302021-03-312020-09-302020-06-30
Value2248224837633763
Percentage of UnrecordedUnconditionalPurchaseObligationToBePaidAfterYearFour6315.76315.77481.97481.9

us-gaap:AccountsAndOtherReceivablesNetCurrent

us-gaap:AccountsAndOtherReceivablesNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value14110042515633737178704763585249464748413540322833302822263723
Percentage of AccountsAndOtherReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedRentCurrent

us-gaap:AccruedRentCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value4159675021202021202015121411161112171011262524222010109.1538.6058.4497.9936.1338.0658.0748.027.9937.0967.206
Percentage of AccruedRentCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value20321944196721081263894108410401215122511078759149999019649699188019251014902803748769741632588567530540524483416399415343
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value2.32.32.32.32.32.32.32.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0171.52.54.80.10.40.00.00.00.00.30.30.41.0
Percentage of AssetsFairValueDisclosure0.10.10.10.10.20.30.20.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.20.30.80.00.10.00.00.00.00.10.10.10.3

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value20341947196921111266896108610421215122511078759149999019649699188019251014902803748770744637588567530
Percentage of AssetsFairValueDisclosure100.1100.1100.1100.1100.2100.3100.2100.2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.2100.3100.8100.0100.1100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-31
Value106106106106106106105104104103102102100100
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareNet us-gaap:PropertyPlantAndEquipmentByType

us-gaap:CapitalizedComputerSoftwareNet

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Capitalized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2413137.79.48.87.48.1
Percentage of CapitalizedComputerSoftwareNet100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value186317741789194711277889799351110112210047738128988008638698187008251014902803748769741632588567530540524483416399415343
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value186317741789194711277889799351110112210047738128988008638698187008251014902803748769741632588567530
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsAndShortTermInvestments

us-gaap:CashCashEquivalentsAndShortTermInvestments


Cash
Period End2020-12-312020-09-30
Value18962053
Percentage of CashCashEquivalentsAndShortTermInvestments100.0100.0

us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 us-gaap:UnusualOrInfrequentItem

us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1

save:PayrollSupportProgram3CARESAct


Class
Period End2021-06-30
Value36.45
Percentage of ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1100.0

us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentCarryingAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value328534693580350626642340221322032243225622341964191917481539135412181117101210089407236595484353301480.0
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:SecuredDebt


Debt
Period End2021-06-302021-03-312020-12-31
Value510850850
Percentage of DebtInstrumentCarryingAmount15.524.523.7

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Debt
Period End2021-06-302020-12-31
Value28175
Percentage of DebtInstrumentCarryingAmount0.94.9

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Debt
Period End2021-06-30
Value500
Percentage of DebtInstrumentCarryingAmount15.2

save:PayrollSupportProgramCARESAct, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-31
Value1369873
Percentage of DebtInstrumentCarryingAmount4.12.82.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:RevolvingCreditFacility


Debt
Period End2020-12-31
Value275
Percentage of DebtInstrumentCarryingAmount7.7

us-gaap:DebtInstrumentCarryingAmount us-gaap:LongtermDebtType

save:EquipmentNotesSeriesA20151


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value311322322333333348348363363378378393393408
Percentage of DebtInstrumentCarryingAmount9.59.39.09.512.514.915.716.516.216.816.920.020.526.5

save:EquipmentNotesSeriesA20171


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6969717173737676787880746312
Percentage of DebtInstrumentCarryingAmount2.12.02.02.02.83.23.43.53.53.53.63.83.30.8

save:EquipmentNotesSeriesAA20171


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value20720721421422122122822823523524222319037
Percentage of DebtInstrumentCarryingAmount6.36.06.06.18.39.510.310.410.510.410.911.49.92.4

save:EquipmentNotesSeriesB20151


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6064646868727276768080848492
Percentage of DebtInstrumentCarryingAmount1.81.81.81.92.63.13.33.43.43.53.64.34.46.0

save:EquipmentNotesSeriesB20171


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5858606065657070777783767013
Percentage of DebtInstrumentCarryingAmount1.81.71.71.72.52.83.23.23.43.43.73.93.60.9

save:EquipmentNotesSeriesC20151


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value808686929298981031031091091151150.0
Percentage of DebtInstrumentCarryingAmount2.52.52.42.63.54.24.44.74.64.94.95.96.00.0

save:EquipmentNotesSeriesC20171


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value858585858585858585858578650.0
Percentage of DebtInstrumentCarryingAmount2.62.52.42.43.23.63.93.93.83.83.84.03.40.0

save:FixedRateLoan


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1238127213011014992927778660672649625493502518
Percentage of DebtInstrumentCarryingAmount37.736.736.428.937.239.635.230.030.028.828.025.126.233.6

save:FourPointSevenFivePercentConvertibleSeniorNotes


Debt
Period End2020-12-31
Value175
Percentage of DebtInstrumentCarryingAmount4.9

save:RevolvingCreditFacilityDueTwoThousandTwentyTwo


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value1801801800.00.0
Percentage of DebtInstrumentCarryingAmount5.05.16.80.00.0

save:TwoThousandTwentyAmendedRevolvingCreditFacilityDueTwoThousandTwentyOne


Debt
Period End2020-12-312020-09-302020-06-30
Value9595111
Percentage of DebtInstrumentCarryingAmount2.72.74.2

us-gaap:ConvertibleDebt


Debt
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value1751751051010.0
Percentage of DebtInstrumentCarryingAmount5.04.93.03.80.0

us-gaap:RevolvingCreditFacility


Debt
Period End2021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1802752752911601601601601350.0
Percentage of DebtInstrumentCarryingAmount5.27.77.810.97.27.37.17.16.10.0

us-gaap:SecuredDebt


Debt
Period End2020-09-30
Value841
Percentage of DebtInstrumentCarryingAmount24.0

us-gaap:SeniorLoans


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value270279287296354364373382391400417
Percentage of DebtInstrumentCarryingAmount7.710.512.313.416.116.216.517.119.920.927.1

us-gaap:DebtInstrumentConvertibleConversionPrice1 us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentConvertibleConversionPrice1

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Debt
Period End2021-04-30
Value49.07
Percentage of DebtInstrumentConvertibleConversionPrice1100.0

us-gaap:DebtInstrumentFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFaceAmount

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:SecuredDebt


Debt
Period End2020-09-17
Value850
Percentage of DebtInstrumentFaceAmount100.0

save:PayrollSupportProgramLowInterestLoan, us-gaap:NotesPayableOtherPayables


Debt
Period End2020-09-302020-07-31
Value2.970
Percentage of DebtInstrumentFaceAmount0.00.0

us-gaap:DebtInstrumentFaceAmount us-gaap:LongtermDebtType

save:FixedRateLoan


Debt
Period End2020-09-302020-06-302020-03-312018-12-312017-12-31
Value291249165139527
Percentage of DebtInstrumentFaceAmount0.00.00.00.00.0

us-gaap:DebtInstrumentFaceAmount us-gaap:StatementScenario, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

srt:ScenarioForecast, save:PayrollSupportProgram, save:NotesPayableToUnitedStatesTreasury


Debt
Period End2020-07-31
Value70
Percentage of DebtInstrumentFaceAmount0.0

srt:ScenarioForecast, save:PayrollSupportProgramTermLoan, save:NotesPayableToUnitedStatesTreasury


Debt
Period End2020-07-31
Value10.0
Percentage of DebtInstrumentFaceAmount0.0

us-gaap:DebtInstrumentFaceAmount us-gaap:StatementScenario, us-gaap:LongtermDebtType

srt:ScenarioForecast, save:NotesPayableToUnitedStatesTreasury


Debt
Period End2020-07-312020-04-20
Value10.070
Percentage of DebtInstrumentFaceAmount0.00.0

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DebtInstrumentUnamortizedDiscount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value61661316044414042444647434140363433333029251513107.15.51.80.0
Percentage of DebtInstrumentUnamortizedDiscount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value394952523230221016182220202319171817192019202021182722252626262624252729284052403729
Percentage of DeferredCreditsAndOtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsGross us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:DeferredFinanceCostsGross

srt:CumulativeEffectPeriodOfAdoptionAdjustment, save:AccountingStandardsUpdate202006


Deferred
Period End2021-01-01
Value2900000.0
Percentage of DeferredFinanceCostsGross100.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:AccountingStandardsUpdate202006


Deferred
Period End2020-12-31
Value2900000.0
Percentage of DeferredFinanceCostsGross0.0

us-gaap:DeferredFinanceCostsNet us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DeferredFinanceCostsNet

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:ConvertibleDebt


Deferred
Period End2021-06-30
Value12
Percentage of DeferredFinanceCostsNet100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value101982655234034224490533413
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value118.8246.8241.6313.0573.3810.416.241
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value57935719627342323201322
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value220131555.980.00.00.2520.1880.0836.234
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value465000.0482000.05262000.05555000.04026000.02751000.0661000.02767000.01072000.0306000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312012-12-312011-12-31
Value4.2989.632105.980.03.176
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.00.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign


Deferred
Period End2020-12-31
Value2800000.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsForeign100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness


Deferred
Period End2020-12-31
Value1500000.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3433000.02851000.02592000.02392000.03882000.04485000.04514000.02687000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value124000.0154000.0189000.0225000.05358000.00
Percentage of DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value898000.01120000.0793000.0754000.01217000.02151000.01681000.00
Percentage of DeferredTaxLiabilitiesPrepaidExpenses100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value603430481298278168376.3843.2711.575
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsOnFlightEquipment

us-gaap:DepositsOnFlightEquipment


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4434123563743823722913302892642362532402052533043173303252722492892862752672602422692482291571321111099695849091726544
Percentage of DepositsOnFlightEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value11811911292928989828379828177145545049485445364434323430343028242622212021171817
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:PerformanceShares


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value4.84.43.43.74.32.94.56.56.38.05.86.97.57.8
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStock


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-09-302011-06-30
Value1010.09.17.59.29.8106.16.17.46.17.26.31.51.7
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized216.7227.3267.6202.7214.0337.9235.693.896.892.588.496.080.80.00.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs


Fair
Period End2020-12-312020-06-302020-03-312019-12-312018-12-31
Value2300000.02300000.02300000.02300000.00
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs100.0100.0100.0100.00.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-30
Value1.9761.6221.7881.951462.23196
Percentage of FinanceLeaseLiability100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiability save:RightOfUseAssetType

save:Aircraft


Finance
Period End2020-12-312019-12-312019-06-30
Value444494
Percentage of FinanceLeaseLiability2466.495.798.5

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value776000.0673000.0671000.0666000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value1200000.0949000.01117000.01285000.0
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value2110000.01735000.01925000.02115000.0
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value842000.0725000.0753000.0753000.0
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2021-06-302020-12-312020-09-30
Value117000.098000.098000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value214000.097000.0349000.0349000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value465000.0349000.0725000.0725000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear


Finance
Period End2021-06-302021-03-312020-09-30
Value433000.0564000.0190000.0
Percentage of FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value134000.0113000.0137000.0164000.0
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset save:RightOfUseAssetType

us-gaap:FinanceLeaseRightOfUseAsset

save:Aircraft


Finance
Period End2020-12-31
Value48
Percentage of FinanceLeaseRightOfUseAsset100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.915.525.545.550.05560.06162.466.140.03930.0612
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FlightEquipmentGross

us-gaap:FlightEquipmentGross


Flight
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value425742074177412640713965373035493514332232573023291128532291201718091608146113861225103182768954942220416129.847
Percentage of FlightEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReceivable us-gaap:UnusualOrInfrequentItem

us-gaap:IncomeTaxReceivable

save:CARESAct


Income
Period End2020-12-31
Value142
Percentage of IncomeTaxReceivable100.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value373714714614610421210.0787069690.0
Percentage of IncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value243337231718161817191818192011158.953148.499148.76418121.708
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:InvestmentsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value106106106106106106105104104103102102101101100100100100100100
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value106106106106106106105104104103102102101101100100100100100100
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

save:AircraftAndSpareEngineLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value227212236230204192
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0100.0100.0

save:PropertyFacilityLeases


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value4.7114.6714.6834.5984.5523.544
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths2.12.22.02.02.21.8

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths save:RightOfUseAssetType, us-gaap:BalanceSheetLocation, us-gaap:UnusualOrInfrequentItem

save:AircraftAndSpareEngineLeases, us-gaap:OtherCurrentLiabilities, save:COVID19Pandemic


Lessee
Period End2020-12-31
Value27
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths11.6

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear save:RightOfUseAssetType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

save:AircraftAndSpareEngineLeases


Lessee
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value118179341021504588142
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0100.0100.0100.0100.0100.0

save:OtherLeasedEquipmentAndProperty


Lessee
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.0830.2280.3720.1450.290.434
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear0.20.20.20.30.30.3

save:PropertyFacilityLeases


Lessee
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2.4793.7041.1242.2373.3770.6991.3962.088
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear2.12.13.32.22.21.61.61.5

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:StandbyLettersOfCredit, us-gaap:UnsecuredDebt


Letters
Period End2020-12-31
Value23
Percentage of LettersOfCreditOutstandingAmount100.0

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense us-gaap:ProductOrService

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:HealthInsuranceProductLine


Liability
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value7300000.06600000.05200000.05000000.05200000.04700000.05000000.05100000.04400000.05600000.05100000.05000000.03900000.05500000.05600000.05700000.05700000.04600000.05000000.04200000.04300000.0
Percentage of LiabilityForClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

save:CorporateCreditCards


Line
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3.133333323181818
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, save:TwoThousandTwentyAmendedRevolvingCreditFacilityDueTwoThousandTwentyOne, us-gaap:LineOfCredit


Line
Period End2020-12-312020-06-302020-03-31
Value95111111
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity3067.70.00.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RevolvingCreditFacility, save:TwoThousandTwentyRevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Line
Period End2021-06-302021-03-312020-05-062020-04-20
Value5454165135
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity0.00.00.00.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:StandbyLettersOfCredit, us-gaap:LineOfCredit


Line
Period End2021-06-302021-03-312020-06-30
Value353030
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity0.00.00.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:RevolvingCreditFacility, save:RevolvingCreditFacilityDueTwoThousandTwentyFour, us-gaap:LineOfCredit


Line
Period End2021-06-302020-06-30
Value24060
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0

us-gaap:LinesOfCreditCurrent us-gaap:CreditFacility

us-gaap:LinesOfCreditCurrent

save:CorporateCreditCards


Lines
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value0.64.63.51.79.97.34.53.7
Percentage of LinesOfCreditCurrent100.0100.0100.0100.0100.0100.0100.0100.0

save:LinesofCreditwithCounterpartiesforJetFuel


Lines
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.7252324
Percentage of LinesOfCreditCurrent616.7550.0657.11423.5

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value210356384373288334258194270173163150145280115
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent us-gaap:DebtInstrument, us-gaap:LongtermDebtType

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:ConvertibleDebt


Long
Period End2020-12-31
Value109
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent28.4

us-gaap:LongTermDebtFairValue us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:LongTermDebtFairValue

save:EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFive, us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SecuredDebt


Long
Period End2021-06-302021-03-312020-12-31
Value533881886
Percentage of LongTermDebtFairValue100.0100.0100.0

save:FourPointSevenFivePercentConvertibleSeniorNotes, us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:ConvertibleDebt


Long
Period End2021-06-302020-12-31
Value73380
Percentage of LongTermDebtFairValue13.842.9

save:OnePointZeroZeroPercentConvertibleNotesDueTwoThousandTwentySix, us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:ConvertibleDebt


Long
Period End2021-06-30
Value483
Percentage of LongTermDebtFairValue90.5

save:PayrollSupportProgram, us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:UnsecuredDebt


Long
Period End2020-12-31
Value83
Percentage of LongTermDebtFairValue9.4

save:PayrollSupportProgramCARESAct, us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:UnsecuredDebt


Long
Period End2021-06-302021-03-312020-12-31
Value14510583
Percentage of LongTermDebtFairValue27.312.09.4

us-gaap:LongTermDebtFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, save:EquipmentNotesSeriesA20151


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value325323323299321313372383382386374389394420
Percentage of LongTermDebtFairValue61.036.736.50.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, save:EquipmentNotesSeriesA20171


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6967686061647878787676716112
Percentage of LongTermDebtFairValue13.07.67.80.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, save:EquipmentNotesSeriesAA20171


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value21120720720220820123723724023122821318437
Percentage of LongTermDebtFairValue39.723.623.40.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, save:EquipmentNotesSeriesB20151


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6163626059627478788078838494
Percentage of LongTermDebtFairValue11.47.27.10.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, save:EquipmentNotesSeriesB20171


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5856564851527271777579736813
Percentage of LongTermDebtFairValue10.96.46.30.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, save:EquipmentNotesSeriesC20151


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8081777665831001061051101071141140.0
Percentage of LongTermDebtFairValue15.19.38.80.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, save:EquipmentNotesSeriesC20171


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value847976696072888887868478650.0
Percentage of LongTermDebtFairValue15.99.18.60.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:ConvertibleDebt


Long
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value5383802542640.0
Percentage of LongTermDebtFairValue61.042.90.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, save:FixedRateLoan


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1279130313621034976916823699700665600487489528
Percentage of LongTermDebtFairValue239.8147.8153.80.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:RevolvingCreditFacility


Long
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1802752752911601601601601601350.0
Percentage of LongTermDebtFairValue20.431.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SecuredDebt


Long
Period End2020-09-30
Value853
Percentage of LongTermDebtFairValue0.0

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorLoans


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value262262269296378382384373395400435
Percentage of LongTermDebtFairValue0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:UnsecuredDebt


Long
Period End2020-09-302020-06-302019-12-31
Value77600.0
Percentage of LongTermDebtFairValue0.00.00.0

us-gaap:LongTermDebtFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value34073888385935732684219723032307232222862169194019001740158314021258115210331036950722652148
Percentage of LongTermDebtFairValue638.4441.0435.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive


Long
Period End2020-12-31
Value1149
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2021-06-302021-03-312020-12-312020-09-302018-12-31
Value192192290284171
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2020-12-31
Value1212
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value7251212221218
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value221401335332
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value335335372368
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear


Long
Period End2021-06-302021-03-312020-09-30
Value9915449
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear100.0100.0100.0

us-gaap:LongtermDebtWeightedAverageInterestRate us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongtermDebtWeightedAverageInterestRate

save:PayrollSupportProgram, us-gaap:UnsecuredDebt


Longterm
Period End2020-12-31
Value1.0
Percentage of LongtermDebtWeightedAverageInterestRate100.0

us-gaap:LongtermDebtWeightedAverageInterestRate us-gaap:LongtermDebtType

save:ConvertibleDebtDueIn2026


Longterm
Period End2021-06-30
Value1.0
Percentage of LongtermDebtWeightedAverageInterestRate0.0

save:EquipmentNotesSeriesA20151


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4.14.14.14.10.0410.0410.0410.0410.0410.0410.0410.0410.0410.0410.0410.0410.041
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0410.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesA20171


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3.653.653.653.650.03650.03650.03650.03650.03650.03650.03650.03650.03650.03650.0365
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0365.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesAA20171


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3.383.383.383.380.03380.03380.03380.03380.03380.03380.03380.03380.03380.03380.0338
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0338.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesB20151


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4.454.454.454.450.04450.04450.04450.04450.04450.04450.04450.04450.04450.04450.04450.04450.0445
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0445.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesB20171


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3.83.83.83.80.0380.0380.0380.0380.0380.0380.0380.0380.0380.0380.038
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0380.00.00.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesC20151


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.934.934.934.930.04930.04930.04930.04930.04930.04930.04930.04930.0493
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0493.00.00.00.00.00.00.00.00.00.00.0

save:EquipmentNotesSeriesC20171


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5.115.115.115.110.05110.05110.05110.05110.05110.05110.05110.05110.0511
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0511.00.00.00.00.00.00.00.00.00.00.0

save:FixedRateLoan


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3.363.363.363.340.03340.03470.0370.03480.03480.03670.03880.03830.03830.03830.03830.03760.0382
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0336.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

save:RevolvingCreditFacilityDueTwoThousandTwentyFour


Longterm
Period End2021-03-312020-12-31
Value2.112.15
Percentage of LongtermDebtWeightedAverageInterestRate0.0215.0

save:RevolvingCreditFacilityDueTwoThousandTwentyTwo


Longterm
Period End2020-12-312020-09-302020-06-30
Value2.152.150.0219
Percentage of LongtermDebtWeightedAverageInterestRate215.00.00.0

save:TwoThousandTwentyAmendedRevolvingCreditFacilityDueTwoThousandTwentyOne


Longterm
Period End2020-12-312020-09-302020-06-30
Value1.551.560.0158
Percentage of LongtermDebtWeightedAverageInterestRate155.00.00.0

us-gaap:ConvertibleDebt


Longterm
Period End2021-03-312020-12-312020-09-302020-06-30
Value4.754.754.750.0475
Percentage of LongtermDebtWeightedAverageInterestRate0.0475.00.00.0

us-gaap:SeniorLoans


Longterm
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3.550.03550.03550.04020.0410.0410.0410.0410.0410.0410.0410.0410.0410.041
Percentage of LongtermDebtWeightedAverageInterestRate0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnsecuredDebt


Longterm
Period End2020-09-302020-06-30
Value1.00.01
Percentage of LongtermDebtWeightedAverageInterestRate0.00.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.926.066.086.070.06070.06045.866.480.06520.0672
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-31
Value95637703
Percentage of OperatingLossCarryforwards100.0100.0100.0

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-31
Value360109114
Percentage of OperatingLossCarryforwards37.6290.216.3

us-gaap:PropertyPlantAndEquipmentOther

us-gaap:PropertyPlantAndEquipmentOther


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value356341334328320305291234215201191178168161155148140136126109103938276666057695554504947454353514946434139
Percentage of PropertyPlantAndEquipmentOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentSalvageValuePercentage us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentSalvageValuePercentage

save:NewAircraftNewEnginesMajorSpareRotablePartsAvionicsandAssemblies


Property
Period End2020-12-31
Value10.0
Percentage of PropertyPlantAndEquipmentSalvageValuePercentage100.0

us-gaap:RestrictedCash us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalents

us-gaap:RestrictedCash

save:ControlAgreementsForInterestAndFeePayments


Restricted
Period End2021-06-302021-03-312020-12-312020-09-30
Value27344124
Percentage of RestrictedCash100.0100.0100.0100.0

us-gaap:RestrictedCashCurrent

us-gaap:RestrictedCashCurrent


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value62647154300.0
Percentage of RestrictedCashCurrent100.0100.0100.0100.0100.00.0

us-gaap:SaleOfStockPricePerShare us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockPricePerShare

save:DirectPlacement


Sale
Period End2021-04-30
Value35.05
Percentage of SaleOfStockPricePerShare100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

save:PerformanceSharesMarketCondition


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value60.8861.5853.9252.8450.54
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0

save:PerformanceSharesPerformanceCondition


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value45.1453.2449.8145.720
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue74.186.592.486.50.0

us-gaap:RestrictedStock


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302011-12-31
Value41.7449.8447.9550.4849.5549.1938.8322.9916.9416.2815.071.43
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue68.680.988.995.598.00.00.00.00.00.00.00.0

us-gaap:ShortTermLeaseCommitmentAmount save:RightOfUseAssetType

us-gaap:ShortTermLeaseCommitmentAmount

save:OtherLeasedEquipmentAndProperty


Short
Period End2020-12-31
Value1400000.0
Percentage of ShortTermLeaseCommitmentAmount100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary

save:NonaircraftRelatedCommitments


Unrecorded
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1514131212111110.09.99.70.40.50.20.10.10.2
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1209100210028.38.38.38.417161616784784785777823824706705703701711711615615616543816808607613511510
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary8060.76913.87212.265.465.473.574.3170.0169.7173.24200.0156960.0392400.0785800.0777900.0411500.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary

save:NonaircraftRelatedCommitments


Unrecorded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-31
Value222117171721145.95.7
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value884884415357356988583528660592660559323
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary3880.34133.22335.42088.92084.24511.44054.28955.911584.20.00.00.00.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary

save:NonaircraftRelatedCommitments


Unrecorded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value17161414141413131311119.99.89.50.71.00.60.50.30.2
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1066106610011073107349149117171717775785785785820829830824679680704703620618621621757757757804640809501505520520
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary6274.16386.86907.67400.07400.03413.93588.3126.6126.6157.1158.07832.38011.28264.2112157.182050.0138300.0166120.0274800.0339500.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary

save:NonaircraftRelatedCommitments


Unrecorded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value19181516161717171714141212121.85.74.94.43.95.2
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value908908849606606735744858858865811592600600774528528521649659668767767592597604604658658662619412419354354324323
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary4660.04805.85340.33742.63741.44303.54355.64903.44931.06011.85674.14699.24805.64923.843044.49270.210783.711861.416661.512673.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary

save:NonaircraftRelatedCommitments


Unrecorded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value16161414141617141411111212121.31.60.80.80.33.8
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value980980676707707115123776776775775810821821820773764765678650650621620767763763763601601601633794834524523348348
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary5975.66087.04794.34915.34913.9711.7719.25279.65279.66864.66863.76384.36572.86677.263146.248356.295550.095637.5226100.017105.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears

save:NonaircraftRelatedCommitments


Unrecorded
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value355050606056566665640.00.20.10.00.00.0
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value2367360536050.00.00.00.08.07.97.97.9242424248038038128121515151515251525220822072211219727432346233929602955
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears6707.67167.87167.80.00.00.00.012.012.012.20.012300.024600.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear

save:NonaircraftRelatedCommitments


Unrecorded
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value19205.610153.46.99.32.55.37.71.83.44.71.4
Percentage of UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value249380791197013083884662103454452274131042094051492854222873504121362332488496
Percentage of UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear1311.61837.21423.21112.14615.89061.85630.45017.28408.06520.85788.312655.612152.97428.60.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:WarrantsNotSettleableInCashFairValueDisclosure us-gaap:UnusualOrInfrequentItem

us-gaap:WarrantsNotSettleableInCashFairValueDisclosure

save:CARESAct


Warrants
Period End2020-09-302020-04-20
Value200000.03700000.0
Percentage of WarrantsNotSettleableInCashFairValueDisclosure100.0100.0

Line plots across dimensions of each concept


TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:InterestExpenseLongTermDebt
us-gaap:LongtermDebtType
(None,)
Interest Expense Long Term Debtus-gaap: Longterm Debt Type
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:AirlineDestinations
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Airline Destinations
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:OperatingLeaseLiabilityCurrent
save:RightOfUseAssetType
(None,)
Operating Lease Liability Currentsave: Right Of Use Asset Type
us-gaap:OperatingLeaseLiabilityNoncurrent
save:RightOfUseAssetType
(None,)
Operating Lease Liability Noncurrentsave: Right Of Use Asset Type
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
save:RightOfUseAssetType
(None,)
Lessee Operating Lease Liability Payments Due Year Twosave: Right Of Use Asset Type
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
save:RightOfUseAssetType
(None,)
Lessee Operating Lease Liability Payments Due Year Threesave: Right Of Use Asset Type
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
save:RightOfUseAssetType
(None,)
Lessee Operating Lease Liability Payments Due Year Foursave: Right Of Use Asset Type
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive
save:RightOfUseAssetType
(None,)
Lessee Operating Lease Liability Payments Due Year Fivesave: Right Of Use Asset Type
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
save:RightOfUseAssetType
(None,)
Lessee Operating Lease Liability Payments Due After Year Fivesave: Right Of Use Asset Type
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents
(None,)
Stock Issued During Period Value New Issuesus-gaap: Statement Equity Components