Learn all there is to know about Denver International Airport’s British Airways DEN Terminal Get all the information you need for a hassle-free travel experience, from gate locations and eating options to check-in procedures and lounge amenities. Find out what services are available at the terminal, how to get through security, and how to make the most of the time you have before your departure. Our guidance guarantees a hassle-free flight with British Airways at Denver’s busy terminal, whether you’re coming or exiting.