The Heathrow Express (HEX) is a dedicated rail connection between London Heathrow Airport and Paddington station near central London. Operating on England’s Great Western main line network, the Express offers the quickest transfer time between the two points: a mere 15 minutes, non-stop. Also, daily departures are frequent, with trains leaving both Heathrow and Paddington every 15 minutes.
From London, the HEX makes two stops upon arrival at Heathrow. The first, Heathrow Central station, takes 15 minutes. The train then makes its second stop at Heathrow Terminal 5 station just 6 minutes later.