Leases - Narrative (Details)	3 Months Ended
	Mar. 31, 2025 USD ($) aircraft aircraft_engine
Lessee, Lease, Description [Line Items]
Number of spare engines owned | aircraft_engine	32
Number of spare engines unencumbered | aircraft_engine	0
Noncancellable short-term operating lease, payments, remainder of year | $	$ 2,500,000
Noncancellable short-term operating lease, payments, year one and beyond | $	$ 0
Aircraft
Lessee, Lease, Description [Line Items]
Number of aircraft owned	49
Number of aircraft unencumbered	0
Failed aircraft sale leaseback	18
A320 Family | Aircraft
Lessee, Lease, Description [Line Items]
Number of aircraft owned	213
Aircraft
Lessee, Lease, Description [Line Items]
Number of aircraft under sale-leaseback transactions	2
Aircraft | A320 Family
Lessee, Lease, Description [Line Items]
Operating leases of lessee, number of leased assets	146
Aircraft | Minimum
Lessee, Lease, Description [Line Items]
Operating leases, term	8 years
Aircraft | Maximum
Lessee, Lease, Description [Line Items]
Operating leases, term	18 years
Other | Maximum
Lessee, Lease, Description [Line Items]
Operating leases, term	99 years
Spare Engines
Lessee, Lease, Description [Line Items]
Operating leases of lessee, number of leased assets | aircraft_engine	5
Leased Computer And Office Equipment
Lessee, Lease, Description [Line Items]
Finance leases, term	5 years