The original Frontier began in 1950 as a result of a merger among Arizona Airways, Challenger Airlines and Monarch Airlines. The airline later purchased Central Airlines in 1967. After the industry was deregulated in 1978, intense competition ensued and Frontier was sold to People Express in 1985. Shortly thereafter, Continental purchased the airline and the original Frontier ended.

Frontier reemerged with a plan in 1993, when former Frontier executives started a new Frontier, which began operating with two aircraft in 1994. Fifteen years later, Frontier was purchased by Republic Airlines. In 2013, Republic sold Frontier to Indigo Partners. Frontier Airlines is headquartered in Denver, Colorado, and serves over 55 communities in the United States, Mexico and the Dominican Republic. Over 3,000 employees contribute to over 275 daily flights.

Sources:
Frontier Airlines – History
Frontier Airlines – About Us