Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Property, Plant and Equipment [Line Items]
Property and equipment depreciation	$ 3.3	$ 1.9	$ 8.1	$ 4.5
Leasehold Improvements Aircraft Other \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	1 year		1 year
Leasehold Improvements Aircraft Other \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years		10 years
Office and Ground Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years		5 years
Computer Hardware and Software \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years		3 years
Computer Hardware and Software \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years		5 years
Property And Equipment Under Finance Leases \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years		5 years
Property And Equipment Under Finance Leases \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	30 years		30 years
Rotable Parts
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	48 months		48 months
Airframe
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	6 years		6 years
Estimated salvage and residual value estimates	$ 2.8		$ 2.8
Airframe \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	25 years		25 years
Engines
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	43 months		43 months
Estimated salvage and residual value estimates	$ 11.0		$ 11.0