There are two primary ways to access Concourse A from the Jeppesen Terminal: Pedestrian Bridge: Located on Level 6, this walkway leads directly to Concourse A and offers a scenic view of the tarmac below. Automated Train: For travelers with heavy luggage or limited mobility, the underground train is a faster and more convenient option, stopping at all concourses. https://airportsterminalhub.com/airlines/frontier-airlines/frontier-airlines-denver-international-airport-den-terminal/