v3.19.3
Cover Page Document
Oct. 14, 2019
Cover page.  
Document Type 8-K
Document Period End Date Oct. 14, 2019
Entity Registrant Name Allegiant Travel Company
Entity Incorporation, State or Country Code NV
Entity File Number 001-33166
Entity Tax Identification Number 20-4745737
Entity Address, Address Line One 1201 North Town Center Drive
Entity Address, City or Town Las Vegas,
Entity Address, State or Province NV
Entity Address, Postal Zip Code 89144
City Area Code 702
Local Phone Number 851-7300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001362468
Amendment Flag false