Heathrow Airport

London Heathrow Airport is the busiest airport in the United Kingdom and one of the busiest in the world by international passenger traffic, located in the London Borough of Hillingdon in west London. It was developed as a major civil airport after the Second World War and has grown to operate with two runways and multiple terminal buildings. Heathrow serves as a major hub for long-haul international flights and is the principal base for British Airways. The airport has been the subject of long-running debate over expansion, including proposals for a third runway.