Related Parties (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) director	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Controladora Vuela Compañía de Aviación, S.A.B. de C.V. | Indigo Partners
Related Party Transaction [Line Items]
Outstanding shares of common stock held	18.00%
Indigo Partners | Related Party
Related Party Transaction [Line Items]
Management fees, expense reimbursements, and director compensation | $	$ 2	$ 2	$ 2
Controladora Vuela Compañía de Aviación, S.A.B. de C.V. | Related Party
Related Party Transaction [Line Items]
Number of company directors	2
Number of alternate company directors	1