The average train between Harrow and Heathrow Terminal 4 takes 49 min and the fastest train takes 44 min. The train runs at least 4 times per hour from Harrow to Heathrow Terminal 4. 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 15 minutes between Harrow and Heathrow Terminal 4. The earliest departure is at 6:49 AM in the morning, and the last departure from Harrow is at 3:12 PM which arrives into Heathrow Terminal 4 at 3:59 PM. All services require a transfer, and take on average 49 min. The schedules shown below are for the next available departures.

51 min • 1 change

57 min • 1 change

52 min • 1 change

50 min • 1 change
Want to know about travelling from Harrow to Heathrow Terminal 4? 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 to Heathrow Terminal 4. However, there are services departing from Harrow station and arriving at Heathrow Terminal 4 station via Acton Town station station. The journey, including transfers, takes approximately 49 min.
Harrow to Heathrow Terminal 4 train services, operated by London Underground (Tube), depart from South Harrow station.
Harrow to Heathrow Terminal 4 train services, operated by London Underground (Tube), arrive at Heathrow Terminal 4 station.
The distance between Harrow and Heathrow Terminal 4 is 15.6 km. The road distance is 23 km.
You can take a subway from South Harrow station to Heathrow Terminal 4 station via Acton Town station in around 44 min.