Denver International Airport United Airlines DEN Terminal home to a large and contemporary terminal, serves as a significant hub for United Airlines. A variety of facilities are available at the United Airlines terminal, such as plenty of places to eat, retail spaces, and cozy lounges. Passengers can conveniently obtain gate information and up-to-date flight information via digital displays positioned across the terminal. Conveniently positioned, United's check-in counters and customer service desks offer attentive staff who are ready to assist with any needs. Traveling through Denver is made easy by the terminal's excellent connections to effective transit systems.