Airlines12

What Terminal is Delta Airlines at DEN? If you're flying Delta Airlines through Denver International Airport (DEN), you'll be using Concourse A. Delta operates out of Terminal West, with check-in and baggage claim conveniently located there. Once you're checked in, the train will take you to Concourse A for your departure. Delta's service at DEN is smooth, with friendly staff and an easy boarding process. Whether you're heading to Atlanta, Salt Lake City, or beyond, Delta ensures a comfortable journey.