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Organization and Operations - Additional Information (Detail1)	3 Months Ended
	Dec. 31, 2024 AirCraft
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of aircrafts operated	60
United capacity purchase agreement termination notice period	30 days
CRJ-900 Aircraft [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of aircrafts operated	6
E-175 Aircraft [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of aircrafts operated	54

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Organization consolidation and presentation of financial statements.

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Number of aircraft operated by the carrier.

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