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Allegiant Air is an American low-cost airline headquartered in Nevada, USA. Founded in 1997, it is certified as a ‘Scheduled Air Carrier’. It flies scheduled and charter flights throughout the U.S. and charter flights to Canada and Mexico. Allegiant Airlines has a fleet of 75 Airbus aircraft.

Buy Allegiant Air Tickets in Installments. If you are an American citizen, you can finance your Allegiant Air tickets with Affirm and pay in 3 - 12 monthly instalments when you book through the Alternative Airlines website! It's easy and quick to process. You can also pay with Afterpay, or PayPal Credit.

iPhone Screenshots. The official app of Allegiant Travel & Allegiant Airlines. Book your vacation online at www.allegiantair.com, then use this app to make the most of your trip. Passengers can follow their trip on a card-by-card basis in the app. Each phase in the trip is represented as a card in a timeline of the whole journey.

Since 1999, Allegiant Air has linked travelers in small-to-medium cities to world-class vacation destinations with all-nonstop flights and industry-low average fares. Today, Allegiant's fleet serves communities across the nation, with base airfares less than half the cost of the average domestic roundtrip ticket.