Frontier Airlines DCA Terminal is located in Terminal A of Ronald Reagan National Airport (DCA) in Washington, D.C. With self-check-in kiosks and ticket desks, Frontier, which is well-known for its inexpensive tickets, provides a straightforward travel experience. Among Terminal A’s basic facilities are fast food restaurants such as The Great American Bagel Bakery and Einstein Bros. Bagels. Because both checked bags and carry-ons are subject to additional surcharges, travelers should be informed of Frontier’s baggage policy and budget for any potential additional costs.