Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Property, Plant and Equipment [Line Items]
Property and equipment depreciation	$ 1.0	$ 0.6	$ 2.1	$ 1.2
Amortization of deferred maintenance	$ 1.0	$ 0.4	$ 1.6	$ 0.7
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	43 months		43 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	40 months		40 months
Estimated salvage and residual value estimates	$ 11.0		$ 11.0