CO
Continental Airlines
United States
IATA
CO
Charlie Oscar
ICAO
COA
Radio Callsign
CONTINENTAL
Example: "CONTINENTAL One Two Three" for CO123
About the "CONTINENTAL" Callsign
When Continental Airlines pilots communicate with air traffic control, they identify themselves using the radio callsign "CONTINENTAL" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "CONTINENTAL Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.