London City Airport is the fastest door-to-door for east and central London. Heathrow is fastest for west London. Your destination within London determines the answer.
The fastest airport depends entirely on where in London you are heading. London City Airport is fastest for Canary Wharf, the City, and the eastern edge of central London (DLR, ~25 min to Bank). Heathrow is fastest for west and much of central London (Elizabeth Line, ~35 min). Gatwick is fastest for south London and Victoria (Gatwick Express, ~30 min). Stansted and Luton are rarely the fastest — their longer transfers mean you arrive later even if your flight lands earlier.
Here is the fastest airport for each London destination:
A flight to Stansted might be 15 minutes shorter than a flight to Heathrow — but the Stansted transfer is 35 minutes longer. You arrive at your destination 20 minutes later despite the shorter flight. Always compare door-to-door time, not flight duration. Our Total Travel Time Guide explains this in detail.
Speed matters most on short trips — a weekend break, a business meeting, a one-day visit. An extra hour of transfer time each way costs you 2 hours of your trip. On longer trips, the time difference matters less and cost should be the deciding factor.
London City Airport (LCY) via DLR to Bank in ~25 minutes. Of the major airports, Heathrow via Heathrow Express to Paddington in 15 minutes (but costs £25). For best speed-to-cost ratio, the Elizabeth Line from Heathrow (~35 min, ~£12).
No. A flight 15 minutes shorter to Stansted can lose 35 minutes on the longer transfer — arriving 20 minutes later overall. Always compare total door-to-door time.