Looking to fly Southwest to Washington, D.C.? The answer is yes—Southwest Airlines does fly to DCA (Ronald Reagan Washington National Airport). If you're traveling soon and need to know more about Southwest Airlines at DCA, the airline operates from Terminal A, a smaller terminal primarily serving low-cost carriers. Wondering what terminal is Southwest Airlines at DCA Airport? Termina... https://airlinesterminaloffice.com/southwest-airlines/southwest-airlines-dca-terminal-ronald-reagan-washington-national-airport/