The average bus between Watford Junction and St James's Square takes 1h 27m and the fastest bus takes 1h 6m. The bus runs at least 2 times per hour from Watford Junction to St James's Square. 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 every 30 minutes between Watford Junction and St James's Square. The earliest departure is at 12:42 AM at night, and the last departure from Watford Junction is at 11:42 PM which arrives into St James's Square at 1:11 AM. All services require a transfer at Black Boy PH and take an average of 1h 27m. The schedules shown below are for the next available departures.

1h 29m • 1 change

1h 31m • 1 change
Arrives next day

1h 29m • 1 change
Arrives next day

1h 29m • 1 change

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1h 20m • 1 change

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1h 20m • 1 change
Want to know about travelling from Watford Junction to St James's Square? 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 Watford Junction to St James's Square. However, there are services departing from Watford Junction station and arriving at St James's Square station via Black Boy PH. The journey, including transfers, takes approximately 1h 27m.
Watford Junction to St James's Square bus services, operated by Arriva UK, depart from Watford Junction station.
Watford Junction to St James's Square bus services, operated by Arriva UK, arrive at Hyde Park Corner station.
The distance between Watford Junction and St James's Square is 25 km. The road distance is 42 km.
You can take a bus from Watford Junction station to St James's Square via Black Boy PH and Hyde Park Corner in around 1h 40m.