airport codes UK 3

https://wiki-fusion.win/index.php/Understanding_UK_Aviation_Fields:_From_Heathrow_to_Regional_Airports

UK airport codes can be confusing since there are so many major hubs in a small area, but each three-letter code helps distinguish them—like LHR for Heathrow, LGW for Gatwick, and STN for Stansted, each serving different routes and airlines.