The IATA airport code for London Heathrow Airport is LHR.
Heathrow is located in the London Borough of Hillingdon, west of central London. It is one of the United Kingdom’s main international aviation gateways and a major hub for British Airways. The airport has two operational runways and multiple passenger terminals.
The three-letter code LHR is used in airline reservations, baggage handling, tickets, schedules, and flight-information systems. Airport codes are often different from airport names because they may reflect historical names, earlier locations, or the airport’s original designation.
London has several other major airports with similar-looking codes. Gatwick uses LGW, London City uses LCY, and Stansted uses STN. Confusing these codes can send travelers to airports that are far apart. Heathrow’s railway connections include the Heathrow Express, Elizabeth line, and London Underground services.