Do you know where does frontier airlines fly ? Frontier Airlines, a well-known ultra-low-cost carrier (ULCC) in the US, provides nonstop service to several cities around the nation. Frontier Airlines has established a vast network of nonstop routes with a focus on offering economical options to customers on a tight budget. We’ll go over where Frontier Airlines flies nonstop as well as how these direct routes help travelers in this extensive post.An vast network of flight routes are operated by Frontier Airlines, a well-known ultra-low-cost airline in the United States, with the majority of them going to domestic locations. Although it might not have the same global reach as some of the bigger airlines, Frontier Airlines is essential for getting passengers to various American locations.