The "easiest" airport depends entirely on where you are staying in London in 2026. If you are in the City or Canary Wharf, London City Airport (LCY) is undisputed; you can reach it via the DLR in 20 minutes. However, for most of Central London, Heathrow (LHR) has become the easiest thanks to the Elizabeth Line, which connects Paddington, Bond Street, and Liverpool Street directly to all terminals in under 40 minutes for roughly £13. If you are in South London, Gatwick (LGW) is your best bet via the Gatwick Express from Victoria Station (30 mins). While Luton and Stansted offer budget flights, they are significantly harder to reach, requiring longer coach journeys or trains that often involve a shuttle bus transfer. In 2026, Heathrow remains the gold standard for "total ease" because it offers the most transport options: the luxury of the Heathrow Express, the efficiency of the Elizabeth Line, and the budget-friendly Piccadilly Line.