Frontier Airlines, Inc. is a prominent American ultra-low-cost airline based in Denver, Colorado. Founded in 1994, the airline operates from hubs in Denver and Orlando Airport. It flies to over 120 destinations in the United States, the Caribbean, Mexico, and Central America. It is one of Denver International Airport’s largest jet carriers, with over 250 flights and arrivals daily. The airline’s fleet consists of more than 130 passenger Airbus A319 jets and over 110 passenger Airbus A318 jets. It currently employs over 5,000 people worldwide and is expanding its workforce and network. WhereAirlinesFly gives comprehensive information about airline offices, including phone numbers, addresses, and other key details.