At Denver International Airport, Frontier Airlines DEN Terminal is based out of Concourse A. Check-in desks are on Level 6 of Terminal East. The airport rail or a pedestrian bridge can take passengers to the concourse. There are numerous places for passengers to dine, shop, and relax in the terminal. Although Frontier’s gates are in a handy location, it is advised to arrive early for security screening, luggage drop-off, and check-in because of the high passenger flow. The terminal makes it simple for travelers to navigate and get ready for their flights by offering effective services and a seamless travel experience.