The average bus between Slough and Harrow takes 1h 40m and the fastest bus takes 1h 8m. The bus service runs several times per day from Slough 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.
Buses run 4 times a day between Slough and Harrow. The earliest departure is at 6:14 AM in the morning, and the last departure from Slough is at 7:33 PM which arrives into Harrow at 8:45 PM. All services require a transfer at Belmont Road and take an average of 1h 40m. The schedules shown below are for the next available departures.

1h 11m • 1 change

1h 9m • 1 change

1h 8m • 1 change

1h 13m • 1 change
Want to know about travelling from Slough 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 bus from Slough to Harrow. However, there are services departing from Slough station and arriving at Harrow station via Belmont Road. The journey, including transfers, takes approximately 1h 40m.
Slough to Harrow bus services, operated by First Berkshire & The Thames Valley, depart from Wellington Street stop W station.
Slough to Harrow bus services, operated by First Berkshire & The Thames Valley, arrive at Harrow-on-the-Hill Station.
The distance between Slough and Harrow is 19.5 km. The road distance is 27 km.
You can take a bus from Wellington Street stop W to Harrow-on-the-Hill Station via Belmont Road and Uxbridge Station in around 1h 25m.