Reaching your boarding gate at the massive Delta Airlines Atlanta Airport Terminal means exploring a vast network of parallel airfield concourses. Because the carrier manages hundreds of daily departures, its flights can leave from almost any concourse on the property, spanning from the terminal-adjacent Concourse T all the way out to Concourse F. Passengers can utilize the fast-moving underground Plane Train or the pedestrian walking tunnels equipped with moving sidewalks to easily commute between different gate areas.