English: Aerial photographs of London City Airport. This airport is one of the 6 airports serving Greater London, the others being Heathrow, Gatwick, Stansted, Luton and Southend. The airport, along with Heathrow, is one of only two such airports which are within Greater London, and is the closest to Central London of all the airports. As a result, the approach to the airport is very steep due to the tall buildings the airport's flight path passes. The airport also has a shorter runway than other airports serving London due to the docks on either side. For these reasons, no aircraft larger than the Airbus A318 are permitted to use the airport, which prevents most long-distance flights there. However, British Airways operates a flight from the airport to New York JFK (with a stopover in Shannon for refueling) using an Airbus A318. The airport is the only airport serving London which does not operate at night.