The average train between Harrow and Hounslow takes 39 min and the fastest train takes 34 min. The train runs at least 5 times per hour from Harrow to Hounslow. 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 Hounslow. The earliest departure is at 12:54 AM at night, and the last departure from Harrow is at 12:44 PM which arrives into Hounslow at 1:20 PM. All services require a transfer, and take on average 39 min. The schedules shown below are for the next available departures.

4h 21m • 1 change

44 min • 1 change

35 min • 1 change

37 min • 1 change
Want to know about travelling from Harrow to Hounslow? 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 Hounslow. However, there are services departing from Harrow station and arriving at Hounslow station via Acton Town station station. The journey, including transfers, takes approximately 39 min.
Harrow to Hounslow train services, operated by London Underground (Tube), depart from South Harrow station.
Harrow to Hounslow train services, operated by London Underground (Tube), arrive at Hounslow Central Station.
The distance between Harrow and Hounslow is 12.6 km. The road distance is 17 km.
You can take a subway from South Harrow station to Hounslow Central Station via Acton Town station in around 32 min.