London is one of the most important financial centres of the world and, consequently, millions of passengers travel to and from this city. This international city is served by many airports such as Luton, Stansted, Heathrow and others. Of these airports, Heathrow Airport is the best recognised and also the busiest airport in London.
Flights from London to Bilbao may take off from any of the six airports that serve London. Gatwick is the second most popular airport in London and is known for its busy single runway, which can handle almost one flight every second. Gatwick Airport is far away from the city but a high-speed train connects it with central London.