Wondering what terminal is delta at dca ? Delta Airlines operates from Terminal 2 at Ronald Reagan Washington National Airport, mainly gates B10 to B22 in Concourse B. Passengers enjoy quick check-in, access to the Delta Sky Club lounge, and convenient dining options. Once through security, you can freely navigate Concourses B, C, D, and E without re-screening. Terminal-guide.com offers the latest tips, maps, and updated travel info to make your visit to the delta terminal at dca smooth and stress-free. Trust this 2025 guide for thorough, reliable airport navigation advice.