The average train between Harrow on the Hill and Heathrow Terminal 3 takes 50 min and the fastest train takes 45 min. The train runs at least 6 times per hour from Harrow on the Hill to Heathrow Terminal 3. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 10 minutes between Harrow on the Hill and Heathrow Terminal 3. The earliest departure is at 8:25 AM in the morning, and the last departure from Harrow on the Hill is at 4:45 PM which arrives into Heathrow Terminal 3 at 5:35 PM. All services require a transfer at Acton Town station and take an average of 50 min. The schedules shown below are for the next available departures.

51 min • 1 change

51 min • 1 change

51 min • 1 change

48 min • 1 change
Want to know about travelling from Harrow on the Hill to Heathrow Terminal 3? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct train from Harrow on the Hill to Heathrow Terminal 3. However, there are services departing from Harrow on the Hill station and arriving at Heathrow Terminal 3 station via Acton Town station station. The journey, including transfers, takes approximately 50 min.
Harrow on the Hill to Heathrow Terminal 3 train services, operated by London Underground (Tube), depart from South Harrow station.
Harrow on the Hill to Heathrow Terminal 3 train services, operated by London Underground (Tube), arrive at Heathrow Terminals 1-2-3 station.
The distance between Harrow on the Hill and Heathrow Terminal 3 is 13.6 km. The road distance is 24 km.
You can take a subway from South Harrow station to Heathrow Terminal 3 via Acton Town station and Heathrow Terminals 1-2-3 station in around 51 min.