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Related Parties (Details) - Related Party $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($) director	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) director	Jun. 30, 2023 USD ($)
Indigo Partners
Related Party Transaction [Line Items]
Management fees, expense reimbursements, and director compensation (less than) | $	$ 1	$ 1	$ 1	$ 1
Controladora Vuela Compañía de Aviación, S.A.B. de C.V.
Related Party Transaction [Line Items]
Number of company directors	2		2
Number of alternate company directors	1		1

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