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Organization and Business of Company (Notes)	12 Months Ended
	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Business of Company	Organization and Business of Company Allegiant Travel Company (the “Company”) is a leisure travel company focused on providing travel services and products to residents of under-served cities in the United States. The Company operates a low-cost, low utilization passenger airline which sells air transportation both on a stand-alone basis and bundled with the sale of ancillary air-related and third party services and products. The Company also provides air transportation under fixed fee flying arrangements, generates other ancillary revenues, and owns and operates Sunseeker Resort and Aileron, the related golf course.

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The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

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-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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