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Allegiant Airlines missed flight policy is strict—if you don’t check in or arrive before the cutoff, you may lose your entire fare. Cancellations within seven days of departure are non-refundable unless you purchased Trip Flex, which allows a one-time change or cancellation up to one hour before departure. Without Trip Flex, missed flights are treated as no-shows, and no credit is issued. Always check in early to avoid losing your ticket.

Need help with Allegiant Airlines missed flight policy? Dial 18005944991 for instant assistance and flexible rebooking options.