The average train between Heathrow and Harrow takes 47 min and the fastest train takes 43 min. The train runs at least 6 times per hour from Heathrow to Harrow. 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 Heathrow and Harrow. The earliest departure is at 5:26 AM in the morning, and the last departure from Heathrow is at 2:25 PM which arrives into Harrow at 3:11 PM. All services require a transfer, and take on average 47 min. The schedules shown below are for the next available departures.

45 min • 1 change

44 min • 1 change

51 min • 1 change

49 min • 1 change
Want to know about travelling from Heathrow to Harrow? 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 Heathrow to Harrow. However, there are services departing from Heathrow station and arriving at Harrow station via Acton Town station station. The journey, including transfers, takes approximately 47 min.
Heathrow to Harrow train services, operated by London Underground (Tube), depart from Heathrow Terminals 2 & 3 station.
Heathrow to Harrow train services, operated by London Underground (Tube), arrive at South Harrow station.
The distance between Heathrow and Harrow is 15 km. The road distance is 23 km.
You can take a subway from Heathrow Terminals 2 & 3 station to South Harrow station via Acton Town station in around 43 min.