Allegiant Air Office Phoenix- Allegiant Air was launched in January 1997 as WestJet Express by Mitch Allee, Jim Patterson, and Dave Beadle. The parent company, Allegiant Travel Company, owns the most shares. already, the airline company indexed duty travels. now, with the advancement of technology, they're delivering flight services to 127 destinations with 107 air lines. So if you have any questions or want to make a flight reservation, you can freely do so by visiting the Allegiant Air Office Phoenix. Allegiant Air is one of those airlines that offers a flight booking complex at the commercial office.