United Airlines DCA Terminal  is based out of Ronald Reagan Washington National Airport's Terminal B (DCA). Upon arriving at the terminal, travelers on United flights can check in at the airline's designated counters or kiosks and then go through security to reach their departure gates. A comfortable and convenient travel experience is ensured by Terminal B's array of amenities, which include culinary options, retail stores, and cozy seating places. Passengers are advised to get in touch with United Airlines customer support for the most recent flight schedules, check-in details, and options.