The three-letter IATA code for London Heathrow Airport is LHR. Heathrow is the United Kingdom’s largest airport and one of the world’s best-known international aviation hubs.
IATA airport codes are used by airlines, travel agencies, baggage systems, tickets, and flight-information displays. Heathrow’s code, LHR, is distinct from the codes of London’s other major airports: Gatwick is LGW, London City is LCY, and Stansted is STN.
Heathrow began operating commercially in 1946 and occupies land west of central London. Its location and extensive route network have made it an important connecting point for flights between Europe, North America, Asia, Africa, and the Middle East. The airport has two parallel runways and four active passenger terminals.