United Airlines DEN Terminal +1-888-839-0502 The main base of operations for United Airlines DEN Terminal is Denver International Airport's Terminal B. A variety of services are available at this terminal, such as check-in, baggage claim, ticketing, and a large selection of dining and shopping options. Convenient amenities, quick boarding procedures, and first-rate customer service are all available to passengers to improve their trip. Visit, https://www.airterminalupdate.com/united-airlines/united-airlines-den-terminal-denver-airport/