London Heathrow Airport (IATA: LHR, ICAO: EGLL) is a major international airport in West London, England, United Kingdom. Heathrow is the busiest airport in the United Kingdom and the busiest airport in Europe by passenger traffic. Heathrow is also the third busiest airport in the world by total passenger traffic. In 2014, it handled a record 73.4 million passengers, a 1.4 increase from 2013.

Heathrow lies 12 nautical miles (22 km; 14 mi) west[2] of Central London, and has two parallel east-west runways along with five terminals on a site that covers 12.14 square kilometres (4.69 sq mi). The airport is owned and operated by Heathrow Airport Holdings, which itself is owned by FGP TopCo Limited, an international consortium led by the Spanish Ferrovial Group that includes Caisse de depot et placement du Quebec and Government of Singapore Investment Corporation. Heathrow is the primary hub for British Airways and the primary operating base for Virgin Atlantic.