The average bus between Watford and Kempston takes 3h 5m and the fastest bus takes 2h 18m. There is a bus service every few hours from Watford to Kempston. 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 Watford and Kempston. The earliest departure is at 5:20 AM in the morning, and the last departure from Watford is at 11:04 PM which arrives into Kempston at 7:06 AM. All services require a transfer, and take on average 3h 5m. The schedules shown below are for the next available departures.

2h 46m • 1 change

2h 57m • 1 change

3h 5m • 1 change

3h 3m • 1 change

2h 46m • 1 change

2h 57m • 1 change

3h 5m • 1 change

3h 3m • 1 change

2h 46m • 1 change

2h 57m • 1 change

3h 5m • 1 change

3h 3m • 1 change
Want to know about travelling from Watford to Kempston? 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 to Kempston. However, there are services departing from Watford station and arriving at Kempston station via Luton Station Interchange station. The journey, including transfers, takes approximately 3h 5m.
Watford to Kempston bus services, operated by Arriva UK, depart from Market Street station.
Watford to Kempston bus services, operated by Arriva UK, arrive at West End station.
The distance between Watford and Kempston is 51.7 km. The road distance is 65 km.
You can take a bus from Market Street to West End via Luton Station Interchange in around 2h 58m.