Alaska Airline City Codes Practice

The correct city code for Washington, DC, is DCA. This code refers to Ronald Reagan Washington National Airport, which is the primary airport serving the capital of the United States.

The other options represent different locations: ATL stands for Atlanta, Georgia; DEN indicates Denver, Colorado; and MIA refers to Miami, Florida. Each of these codes is linked to major airports in their respective cities, but none of them are associated with Washington, DC. Therefore, DCA is the appropriate choice for identifying the city code of Washington, DC.