Book Cheap Allegiant Airline tickets on Travelouts. Allegiant Airlines, the low-cost airline was founded in 1997. Head-quartered is located in Los Angeles, Its operates scheduled and charter flights to around in 120+ destination.These include McCarran International Airport (LAS), Fort Lauderdale–Hollywood International Airport (FLL), Los Angeles International Airport (LAX) and Orlando Sanford International Airport (SFB). Although allegiant flies into some major airports, several of its destinations are smaller cities or secondary airports that serve larger cities. In total, the airline serves regarding 105 domestic destinations in 41 states.Allegiant Air could be young, however it's gained surplus recognition and accolades over its short period of existence.It was listed at variety 52, within the Forbes Magazine as America’s Best 100 small corporations.It won FAA’s Aviation Maintenance Technician (AMT) Diamond Award of Excellence, for 2 consecutive years; 2009 and 2010.