Heathrow Airport is the largest and busiest airport that serves London, followed by Gatwick airport which is the second busiest. Heathrow Airport has five terminals: Terminals 1-5, whereas Gatwick Airport has two terminals: North and South. The former has two parallel runways whereas the latter only has a single runway. Heathrow Airport, with an approximate distance of 22km from the city centre, has the advantage of easier accessibility and travel distance. Gatwick Airport, located approximately 43km from the city centre, offers different modes of transport to get to the airport in good time. Flying to Los Angeles? Catch flights from Gatwick to Los Angeles at both terminal areas of the airport.