At Washington, D.C.’s Ronald Reagan Washington National Airport (DCA), Frontier Airlines DCA Terminal is based out of Terminal A. In addition to retail stores, dining options, and convenient access to transportation, this terminal offers a variety of attractions. Well-known for its well-organized design, Terminal A guarantees travelers using Frontier Airlines a seamless journey. It’s an economical option for budget-conscious business and leisure visitors, offering direct flights to a variety of locations.