Change Flight Frontier Change Flight Frontier - Flying is an enthralling experience. However, due to unforeseen events, we may have to make sudden changes to the flight. Reservation changes with Frontier Airlines are inexpensive and simple. Visitors should learn about Frontier Airlines' ticket change policy in order to make necessary changes to their itinerary. They can also contact experts at 1-877-805-0998 to discuss the problem (toll-free).