What is an airport code?

An airport code is a universal unique three- or four-letter abbreviation to identify an airport (e.g. LHR is the code used for London’s Heathrow Airport).

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When searching for flights online, you can also use city codes to include all airports within a city (e.g. PAR can be used to include both Paris-Charles de Gaulle and Orly Airport).

What are the different types of airport codes?

The most commonly used airport codes are the three-letter IATA (International Air Transport Association) codes. This is the one you will use when searching for flights online.