where does frontier airlines fly ? At reasonable costs, Frontier Airlines offers passengers access to a variety of domestic and select foreign locations. Since the airline is committed to growing its network, more locations are available to its passengers, and its emphasis on price makes it a desirable choice for people looking for affordable travel. When using Frontier Airlines, passengers may guarantee a seamless and pleasurable flight experience by researching their individual destinations, reviewing the airline's regulations, and staying up to date on any travel warnings.