Commitments, Contingencies and Other Contractual Arrangements - Aircraft-Related Commitments and Financing Arrangements (Details)	Dec. 31, 2025 USD ($) aircraft lease aircraft_engine	Oct. 10, 2025 lease aircraft
Unrecorded Unconditional Purchase Obligation [Line Items]
Committed expenditures, 2026	$ 2,500,000
Aircraft-Related Secured Debt
Unrecorded Unconditional Purchase Obligation [Line Items]
Interest commitments, 2026	45,900,000
Interest commitments, 2027	36,900,000
Interest commitments, 2028	18,700,000
Interest commitments, 2029	9,600,000
Interest commitments, 2030	3,400,000
Interest commitments, 2031 and beyond	$ 400,000
AerCap
Unrecorded Unconditional Purchase Obligation [Line Items]
Bankruptcy proceedings, number of leased aircraft to be delivered in the future cancelled \| aircraft		36
Bankruptcy proceedings, number of new leases entered \| lease	30	30
Bankruptcy proceedings, number of leases assumed \| lease		10
A320 and A321
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of delivered aircraft with secured debt financing commitments \| aircraft	48
2026-2031 Delivery Years \| PurePower PW1100G-JM Engine
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of spare aircraft engines ordered \| aircraft_engine	10
2027 Through 2028 Delivery Years \| A320 and A321 \| Third Party Lessor
Unrecorded Unconditional Purchase Obligation [Line Items]
Future aircraft to be received \| aircraft	36
Aircraft and Related Flight Equipment
Unrecorded Unconditional Purchase Obligation [Line Items]
Committed expenditures, 2026	$ 3,400,000
Committed expenditures, 2027	60,500,000
Committed expenditures, 2028	52,500,000
Committed expenditures, 2029 and beyond	$ 0

Bankruptcy Proceedings, Number Of Leased Aircraft To Be Delivered In The Future Cancelled

No definition available.

Name:	flyy_BankruptcyProceedingsNumberOfLeasedAircraftToBeDeliveredInTheFutureCancelled
Namespace Prefix:	flyy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Bankruptcy Proceedings, Number Of Leases Assumed

+ References

No definition available.

+ Details

Name:	flyy_BankruptcyProceedingsNumberOfLeasesAssumed
Namespace Prefix:	flyy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Bankruptcy Proceedings, Number Of New Leases Entered

+ References

No definition available.

+ Details

Name:	flyy_BankruptcyProceedingsNumberOfNewLeasesEntered
Namespace Prefix:	flyy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Future Aircraft To Be Received

+ References

No definition available.

+ Details

Name:	flyy_FutureAircraftToBeReceived
Namespace Prefix:	flyy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	flyy_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidAfterYearFive
Namespace Prefix:	flyy_
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 Five

+ References

No definition available.

+ Details

Name:	flyy_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFive
Namespace Prefix:	flyy_
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:	flyy_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearFour
Namespace Prefix:	flyy_
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:	flyy_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearOne
Namespace Prefix:	flyy_
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:	flyy_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearThree
Namespace Prefix:	flyy_
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:	flyy_LongTermDebtMaturitiesRepaymentsOfInterestAndFeeCommitmentsToBePaidYearTwo
Namespace Prefix:	flyy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of Spare Aircraft Engines Ordered

+ References

No definition available.

+ Details

Name:	flyy_NumberOfSpareAircraftEnginesOrdered
Namespace Prefix:	flyy_
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:	flyy_NumberofDeliveredAircraftwithSecuredDebtFinancingCommitments
Namespace Prefix:	flyy_
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:	flyy_UnrecordedUnconditionalPurchaseObligationToBePaidAfterYearFour
Namespace Prefix:	flyy_
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 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). Includes, but is not limited to, lease not yet commenced.

+ 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

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ 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 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). Includes, but is not limited to, lease not yet commenced.

+ 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). Includes, but is not limited to, lease not yet commenced.

+ References

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary
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=flyy_AircraftRelatedSecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_AircraftTypeAxis=flyy_A320andA321Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	flyy_DeliveryYearAxis=flyy_A20262031DeliveryYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	flyy_EngineTypeAxis=flyy_PurePowerPW1100GJMEngineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	flyy_DeliveryYearAxis=flyy_A2027Through2028DeliveryYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=flyy_ThirdPartyLessorMember
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: