The ICAO airport code or location indicator is a four-letter code designating aerodromes around the world. These codes, as defined by the International Civil Aviation Organization and published in ICAO Document 7910: Location Indicators, are used by air traffic control and airline operations such as flight planning.
| Type | pattern , related to airport | |
| Wikidata property | P239 | |
| Regular expression | ([A-Z]{2}|[CKY][A-Z0-9])([A-Z]{2}|[0-9]{2,4}) | |
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| Classification | Classification | identifier |
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