Airports of London cannot be expanded due to the docks on either side. It is also the only airport serving London which does not operate at night. A light rail service from London City Airport DLR station, which adjoins the terminal building of London City Airport, links it to the financial district of the City of London at Bank and Monument stations, which offer interchanges with London Underground. Located in the London Borough of Hillingdon, Heathrow is by far the largest of London's airports and considered the main gateway into the United Kingdom for non-European visitors. Heathrow has four terminals and two parallel
Airports of London - the airport has a single runway, which is very short. As a result, no large aircraft are permitted to use the airport, which initially prevented all long-haul flights. However, since 2009, British Airways has operated a flight to New York JFK, via Shannon, using an Airbus A318. The largest aircraft currently handled at the airport is the Airbus A220-100, with the first commercial flight completed in August 2017 from Zurich. Located only four miles from Canary Wharf, London City Airport is often used by business travellers, with many flights serving destinations across the UK and northern Europe. The airport