What airport code represents Ronald Reagan Washington National Airport?

The airport code for Ronald Reagan Washington National Airport is DCA. This three-letter code is designated by the International Air Transport Association (IATA) to uniquely identify the airport, making it easier for airlines, travel agents, and passengers to reference.

DCA is specifically chosen for Ronald Reagan Washington National Airport, which is located just across the Potomac River from downtown Washington, D.C. This airport is an important hub for domestic flights and serves countless travelers visiting the nation's capital. Its proximity to the city center and the historical significance of its name, honoring former President Ronald Reagan, also contribute to the recognition of this airport code.

The other options represent different airports; for instance, IAD corresponds to Washington Dulles International Airport, which serves the Washington, D.C. area as well but is located farther from the city center. TUS stands for Tucson International Airport in Arizona, and EGE is the airport code for Eagle County Regional Airport in Colorado. Each of these codes serves as a unique identifier for their respective airports, distinct from DCA.