The average bus between Harrow and Windsor Castle takes 2h 26m and the fastest bus takes 1h 23m. The bus service runs several times per day from Harrow to Windsor Castle. 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 Harrow and Windsor Castle. The earliest departure is at 5:51 AM in the morning, and the last departure from Harrow is at 11:56 PM which arrives into Windsor Castle at 7:14 AM. All services require a transfer at Uxbridge Station and take an average of 2h 26m. The schedules shown below are for the next available departures.


1h 31m • 2 changes


1h 33m • 2 changes


1h 23m • 2 changes


1h 49m • 2 changes
Want to know about travelling from Harrow to Windsor Castle? 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 Harrow to Windsor Castle. However, there are services departing from Harrow station and arriving at Windsor Castle station via Uxbridge Station station. The journey, including transfers, takes approximately 2h 26m.
Harrow to Windsor Castle bus services, operated by Replacement Bus Service, depart from Harrow-on-the-Hill Station.
Harrow to Windsor Castle bus services, operated by Replacement Bus Service, arrive at Windsor Castle station.
The distance between Harrow and Windsor Castle is 21.4 km. The road distance is 31 km.
You can take a bus from Harrow-on-the-Hill Station to Windsor Castle via Uxbridge Station, Wellington Street Stop G, and Windsor Castle in around 1h 38m.