The average train between Isleworth and Harrow takes 35 min and the fastest train takes 31 min. The train runs at least 5 times per hour from Isleworth 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 15 minutes between Isleworth and Harrow. The earliest departure is at 1:54 PM in the afternoon, and the last departure from Isleworth is at 9:34 PM which arrives into Harrow at 10:11 PM. All services require a transfer, and take on average 35 min. The schedules shown below are for the next available departures.

38 min • 1 change

33 min • 1 change

39 min • 1 change

34 min • 1 change
Want to know about travelling from Isleworth 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 Isleworth to Harrow. However, there are services departing from Isleworth station and arriving at Harrow station via Acton Town station station. The journey, including transfers, takes approximately 35 min.
Isleworth to Harrow train services, operated by London Underground (Tube), depart from Osterley station.
Isleworth to Harrow train services, operated by London Underground (Tube), arrive at South Harrow station.
Book your Isleworth to Harrow train tickets online with London Underground (Tube).
The distance between Isleworth and Harrow is 11.8 km. The road distance is 15 km.
You can take a subway from Osterley station to South Harrow station via Acton Town station in around 34 min.