All airports are given an airport code by the International Air Transport Association (IATA).
Passengers commonly use the IATA code when searching for flights on the internet. They are also used for baggage tags.
The IATA code for the airport on Grand Cayman (Owen Roberts International Airport) is GCM.
The IATA code for the airport on Cayman Brac (Gerard Smith Airport) is CYB, while that for the airport on Little Cayman (Edward Bodden Airfield) is LYB.