United Airlines DEN Terminal +1-888-839-0502 One of United Airlines DEN Terminal primary hubs and a focal point of its vast domestic and international network, Terminal B at Denver International Airport (DEN) is the only location from which the airline operates. Modern and well-equipped, Terminal B was built to accommodate the large number of United flights each day. Its layout facilitates easy passenger flow, quick boarding procedures, and a variety of amenities. The airport's underground train transports travelers to Terminal B, which has large gate spaces, natural lighting, charging stations, and cozy seats, after they check in at the west side of the Jeppesen Terminal. Dining options......See More