Frontier Airlines

For the similarly named Frontier Flying Service see Frontier Flying Service. Frontier Airlines is a low-cost airline based at Denver International Airport in Denver, Colorado, USA. The carrier operates flights throughout the United States, Mexico, and Canada.Frontier is a major low-cost airline with two thirds of its US destinations west of the Mississippi River. The carrier maintains its primary hub at Denver International Airport, and provides regional service to the surrounding Rocky Mountain States through a code-share agreement with Great Lakes Airlines. The airline also code-shares with Horizon Air, operating as Frontier JetExpress. In March 2007, Republic Airlines slowly began replacing Horizon Air as the operator of their feeder service; Frontier Airlines Operated by Republic Airlines.
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