A320 Family Purchase Agreement Amendment, Term Extension On Aircraft Delivery Option

No definition available.

Name:	save_A320FamilyPurchaseAgreementAmendmentTermExtensionOnAircraftDeliveryOption
Namespace Prefix:	save_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

A320NEO Family Purchase Agreement Amendment, Delivery Smoothing Term

+ References

No definition available.

+ Details

Name:	save_A320NEOFamilyPurchaseAgreementAmendmentDeliverySmoothingTerm
Namespace Prefix:	save_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Aircraft Rent Commitments For Future Aircraft Deliveries

+ References

No definition available.

+ Details

Name:	save_AircraftRentCommitmentsForFutureAircraftDeliveriesAbstract
Namespace Prefix:	save_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Future Aircraft To Be Received

+ References

No definition available.

+ Details

Name:	save_FutureAircraftToBeReceived
Namespace Prefix:	save_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Lessee, Operating Lease, Liability, To Be Paid, Aircraft To Be Delivered, After Year Four

+ References

No definition available.

+ Details

Name:	save_LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredAfterYearFour
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee, Operating Lease, Liability, To Be Paid, Aircraft To Be Delivered, Remainder Of Fiscal Year

+ References

No definition available.

+ Details

Name:	save_LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredRemainderOfFiscalYear
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee, Operating Lease, Liability, To Be Paid, Aircraft To Be Delivered, Year Four

+ References

No definition available.

+ Details

Name:	save_LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearFour
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee, Operating Lease, Liability, To Be Paid, Aircraft To Be Delivered, Year One

+ References

No definition available.

+ Details

Name:	save_LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearOne
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee, Operating Lease, Liability, To Be Paid, Aircraft To Be Delivered, Year Three

+ References

No definition available.

+ Details

Name:	save_LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearThree
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee, Operating Lease, Liability, To Be Paid, Aircraft To Be Delivered, Year Two

+ References

No definition available.

+ Details

Name:	save_LesseeOperatingLeaseLiabilityToBePaidAircraftToBeDeliveredYearTwo
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long-Term Debt, Maturities, Repayments Of Interest And Fee Commitments [Abstract]

+ References

No definition available.

+ Details

Name:	save_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsAbstract
Namespace Prefix:	save_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Long-Term Debt, Maturities, Repayments Of Interest And Fee Commitments, To Be Paid, After Year Four

+ References

No definition available.

+ Details

Name:	save_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFour
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long-Term Debt, Maturities, Repayments Of Interest And Fee Commitments, To Be Paid, Remainder Of Fiscal Year

+ References

No definition available.

+ Details

Name:	save_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidRemainderOfFiscalYear
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long-Term Debt, Maturities, Repayments Of Interest And Fee Commitments, To Be Paid, Year Four

+ References

No definition available.

+ Details

Name:	save_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long-Term Debt, Maturities, Repayments Of Interest And Fee Commitments, To Be Paid, Year One

+ References

No definition available.

+ Details

Name:	save_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long-Term Debt, Maturities, Repayments Of Interest And Fee Commitments, To Be Paid, Year Three

+ References

No definition available.

+ Details

Name:	save_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Long-Term Debt, Maturities, Repayments Of Interest And Fee Commitments, To Be Paid, Year Two

+ References

No definition available.

+ Details

Name:	save_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number Of Aircraft, Aircraft Type Changed

+ References

No definition available.

+ Details

Name:	save_NumberOfAircraftAircraftTypeChanged
Namespace Prefix:	save_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Aircraft To Be Delivered, Remainder Of Fiscal Year

+ References

No definition available.

+ Details

Name:	save_NumberOfAircraftToBeDeliveredRemainderOfFiscalYear
Namespace Prefix:	save_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Aircraft To Be Delivered, Year One

+ References

No definition available.

+ Details

Name:	save_NumberOfAircraftToBeDeliveredYearOne
Namespace Prefix:	save_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of Aircraft without Secured Financing Commitments Scheduled for Delivery

+ References

No definition available.

+ Details

Name:	save_NumberOfAircraftWithoutSecuredFinancingCommitmentsScheduledForDelivery
Namespace Prefix:	save_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of Spare Aircraft Engines Ordered

+ References

No definition available.

+ Details

Name:	save_NumberOfSpareAircraftEnginesOrdered
Namespace Prefix:	save_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of Aircraft with Secured Debt Financing Commitments Scheduled for Delivery

+ References

No definition available.

+ Details

Name:	save_NumberofAircraftwithSecuredDebtFinancingCommitmentsScheduledforDelivery
Namespace Prefix:	save_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of Delivered Aircraft with Secured Debt Financing Commitments

+ References

No definition available.

+ Details

Name:	save_NumberofDeliveredAircraftwithSecuredDebtFinancingCommitments
Namespace Prefix:	save_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Unrecorded Unconditional Purchase Obligation, To Be Paid, After Year Four

+ References

No definition available.

+ Details

Name:	save_UnrecordedUnconditionalPurchaseObligationToBePaidAfterYearFour
Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482648/440-10-50-4

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in remainder of current fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482648/440-10-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482648/440-10-50-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482648/440-10-50-4

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=save_AircraftRelatedSecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=save_EightPointZeroZeroPercentSeniorSecuredNotesDueTwoThousandTwentyFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=save_NonAircraftRelatedSecuredDebtUnsecuredDebtAndConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_AircraftTypeAxis=save_A320andA321Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis=us-gaap_CapitalAdditionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis=save_NonaircraftRelatedCommitmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	save_EngineTypeAxis=save_PurePowerPW1100GJMEngineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	save_DeliveryYearAxis=save_A20232027DeliveryYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=save_AirbusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	save_DeliveryYearAxis=save_Through2024DeliveriesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=save_ThirdPartyLessorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_AircraftTypeAxis=save_A320FamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	save_DeliveryYearAxis=save_A2023Through2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_AircraftTypeAxis=save_A321neosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies - Aircraft-Related Commitments and Financing Arrangements (Details) $ in Millions	1 Months Ended
	Jul. 31, 2023 aircraft	Jun. 30, 2023 USD ($) aircraft_engine aircraft	Dec. 31, 2022	Jun. 30, 2022
Aircraft-Related Secured Debt
Interest Commitments
Interest commitments, remainder of fiscal year		$ 29.6
Interest commitments, 2024		53.3
Interest commitments, 2025		45.8
Interest commitments, 2026		38.3
Interest commitments, 2027		30.1
Interest commitments, 2028 and thereafter		$ 60.2
Secured Debt \| 8.00% Senior Secured Notes Due 2025
Interest Commitments
Stated interest rate percentage		8.00%	8.00%	8.00%
Non-Aircraft-Related Secured Debt, Unsecured Debt And Convertible Debt
Interest Commitments
Interest commitments, remainder of fiscal year		$ 48.2
Interest commitments, 2024		96.4
Interest commitments, 2025		89.4
Interest commitments, 2026		5.9
Interest commitments, 2027		3.4
Interest commitments, 2028 and thereafter		$ 10.5
A320 and A321
Aircraft Rent Commitments For Future Aircraft Deliveries
Number of delivered aircraft with secured debt financing commitments \| aircraft		73
Aircraft and Related Flight Equipment
Committed Expenditures
Committed expenditures, remainder of fiscal year		$ 357.7
Committed expenditures, 2024		1,202.3
Committed expenditures, 2025		1,432.8
Committed expenditures, 2026		1,424.4
Committed expenditures, 2027		884.1
Committed expenditures, 2028 and thereafter		0.0
Non-aircraft Related Commitments
Committed Expenditures
Committed expenditures, remainder of fiscal year		53.1
Committed expenditures, 2024		21.5
Committed expenditures, 2025		19.7
Committed expenditures, 2026		16.9
Committed expenditures, 2027		16.9
Committed expenditures, 2028 and thereafter		$ 1.5
PurePower PW1100G-JM Engine \| 2023 Through 2027
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of spare aircraft engines ordered \| aircraft_engine		16
Airbus
Unrecorded Unconditional Purchase Obligation [Line Items]
Future aircraft to be received \| aircraft		104
Number of aircraft to be delivered, remainder of fiscal year \| aircraft		6
Number of aircraft to be delivered, next fiscal year \| aircraft		18
Airbus \| Subsequent Event
Unrecorded Unconditional Purchase Obligation [Line Items]
A320NEO Family Purchase Agreement Amendment, delivery smoothing term	6 years
A320NEO Family Purchase Agreement Amendment, number of aircraft, aircraft type changed \| aircraft	31
A320 Family Purchase Agreement Amendment, term extension on aircraft delivery option	1 year
Airbus \| Through 2024
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft with secured debt financing commitments scheduled for delivery \| aircraft		13
Airbus \| 2023 Through 2027
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft without secured financing commitments scheduled for delivery \| aircraft		91
Third Party Lessor \| A320 Family
Aircraft Rent Commitments For Future Aircraft Deliveries
Operating lease payments expected for aircraft to be delivered, remainder of fiscal year		$ 19.5
Operating lease payments expected for aircraft to be delivered, 2024		133.8
Operating lease payments expected for aircraft to be delivered, 2025		186.5
Operating lease payments expected for aircraft to be delivered, 2026		189.0
Operating lease payments expected for aircraft to be delivered, 2027		189.0
Operating lease payments expected for aircraft to be delivered, 2028 and thereafter		$ 1,549.7
Third Party Lessor \| 2023 Through 2025 \| A321neos
Unrecorded Unconditional Purchase Obligation [Line Items]
Future aircraft to be received \| aircraft		29