Frontier Airlines, established in 1994, has its primary hub at Denver International Airport (DEN). Operating from Terminal East, Frontier provides a range of domestic and international flights, Frontier In Denver Airport connecting Denver to numerous destinations across North America. To enhance passenger convenience, Frontier’s ticket counters at DEN open two hours prior to departure. Passengers without checked baggage and with boarding passes can proceed directly to security checkpoints. In December 2024, Frontier introduced the “GoWild!” pass, offering unlimited flights for $299 annually. This initiative aims to provide budget-conscious travelers with flexible and cost-effective travel options.