Date Established1950SubjectAirlinesDescriptionFrontier Airlines was a United States passenger airline established in 1950 due to a merger of Arizona Airways, Challenger Airlines, and Monarch Air Lines. It was headquartered in Denver, Colorado. The airline ceased operations in 1986.
A new, unrelated airline of the same name began in 1994.
Frontier Airlines (1950-1986). Museum of Flight Digital Collections, accessed 23/01/2026, https://digitalcollections.museumofflight.org/nodes/view/28864
