The official app of Allegiant Travel & Allegiant Airlines. Book your vacation online at allegiant.com, then use this app to make the most of your trip. The latest release features a brand new way for passengers to follow their trip on a card by card basis. Each phase in the trip is represented as a card in a timeline of the whole journey. Just tap on the cards and follow the instructions to manage the trip, check in for the flight, display the boarding pass and get departure and arrival information. Passengers can still: Access and review upcoming trips. Automatically download trips onto their mobile phone if logged into their My Allegiant account. View and add seats, purchase bags and upgrade to Priority Boarding. Receive flight status notificationsUsing the Allegiant mobile app can save passengers money and will allow them to zip through the airport without ever printing a single piece of paper.