Frontier Airlines DCA Terminal, located in Terminal A of Ronald Reagan National Airport (DCA) in Washington, D.C., offers domestic and occasionally international flights. Frontier, which is well-known for its inexpensive flights, operates from this terminal to a number of well-liked US locations. In addition to checking in at the airline's authorized counters, passengers who use Frontier can take advantage of expedited security and boarding procedures. Being a low-cost airline, Frontier prioritizes offering reasonably priced travel options, and its Terminal A location guarantees convenient access to the primary airport facilities. Travelers are advised to check in early because many of Frontier's services are self-serve.