Concourse A of Denver International Airport (DEN), one of the busiest airports in the US, is where Delta Airlines Denver International Airport is based. DEN, a vital hub for both local and international flights, is well-known for its unique architecture and size. Because Delta is located at this terminal, passengers can choose from a variety of airline options, including connections to major U.S. cities and international locations. Concourse A, the main hub for Delta Airlines’ operations at DEN, provides travelers with modern amenities, comfort, and convenience to enhance their journey.