What is the ICAO code for Atlanta?

The ICAO code for Atlanta is KATL. ICAO codes are four-letter alphanumeric codes assigned to airports around the world by the International Civil Aviation Organization. The first letter typically denotes the geographic area or region. In the case of KATL, 'K' signifies that the airport is located in the United States, while the 'ATL' portion indicates that it is Atlanta's airport.

Other options represent different airports in other locations: KBWI refers to Baltimore/Washington International Airport, KAUS is for Austin-Bergstrom International Airport, and KAGS is for Augusta Regional Airport. Thus, KATL distinctly identifies Hartsfield-Jackson Atlanta International Airport, making it the correct choice.