The average bus between Parliament Square and Windsor Castle takes 1h 55m and the fastest bus takes 1h 24m. There is a bus service every few hours from Parliament Square 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 hourly between Parliament Square and Windsor Castle. The earliest departure is at 6:32 AM in the morning, and the last departure from Parliament Square is at 11:13 PM which arrives into Windsor Castle at 12:48 AM. All services require a transfer at Parliament Square / Westminster Abbey and take an average of 1h 55m. The schedules shown below are for the next available departures.

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1h 55m • 1 changeWant to know about travelling from Parliament Square 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 Parliament Square to Windsor Castle. However, there are services departing from Victoria Station and arriving at Windsor Castle station via Windsor Castle station. The journey, including transfers, takes approximately 1h 55m.
Parliament Square to Windsor Castle bus services, operated by Reading Buses, depart from Victoria Station.
Parliament Square to Windsor Castle bus services, operated by Reading Buses, arrive at Windsor Castle station.
The distance between Parliament Square and Windsor Castle is 33.2 km. The road distance is 36 km.
Reading Buses operates a bus from Victoria Station to Windsor Castle hourly. Tickets cost £2 and the journey takes 1h 41m.