Photo: Samson Ng · CC BY-SA 4.0 · Cropped to 16:9 and resized.
Heathrow Express is the dedicated non-stop airport rail service between London Paddington and Heathrow. The operator runs a train every 15 minutes and quotes 15 minutes to Terminals 2 and 3, a further six minutes to Terminal 5, and a free transfer towards Terminal 4. It is an IARO Air-Rail Member and hosted the 2023 IARO conference, which marked 25 years of the service.