London Heathrow Airport or Heathrow (IATA: LHR, ICAO: EGLL) is a major international airport serving London, England, known as London Airport from 1946 until 1965. Located in the London Borough of Hillingdon, in West London, Heathrow is the busiest airport in the United Kingdom and the third busiest airport in the world (as of 2012) in total passenger traffic, handling more international passengers than any other airport around the globe. It is also the busiest airport in Europe by passenger traffic and the third busiest by traffic movements, with a figure surpassed only by Charles de Gaulle Airport and Frankfurt Airport. Heathrow is London's main airport, having replaced RAF Northolt and the earlier Croydon Airport. The airport sustains 76,600 jobs directly and around 116,000 indirectly in the immediate area, and this, together with the large number of global corporations with offices close to the airport, makes Heathrow a modern aerotropolis which contributes an estimated 2.7% to London's total GVA.