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It is recommended that passengers book in advance using Allegiant Air's official website or contact center. Further, based on availability, you can purchase airline tickets for same-day travel at the airport ticket counter. Allegiant Air's TripFlex program allows you to make unlimited adjustments and even postpone your flight without incurring a cost of $50-75 per passenger.

Book Allegiant airlines with official website

America's favorite city for world-class destinations, allegiant airlines make people who travel for vacation affordable and convenient. With Allegiant's low fares and nonstop service that's exclusive to the jet, service and travel partners that are premier, Allegiant gives you a complete travel experience like no other, with great value, cheap flights

Allegiant Airlines offers a low fare calendar feature that allows travelers to view the cheapest flight options for their desired travel dates. By selecting the "Low Fare Calendar" option on the airline's website, travelers can easily compare prices across multiple days, enabling them to find the most cost-effective travel options.