Allegiant Air Lines was founded in 1997, and has enjoyed steady growth since then. Part of its success may be because it flies from such cities as Chattanooga, TN, and, of course, offers the lowest fares possible. Pick your departure and arrival cities or country and schedule a flight. Allegiant Air Lines also can offer charter service to Canada and Mexico. See the already reasonable fare and pair it with Allegiant Air coupons or Allegiant Air coupon codes for a complete travel experience.