The average bus between Slough and Monmouth takes 6h 52m and the fastest bus takes 5h 7m. The bus service runs several times per day from Slough to Monmouth. 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 4 hours between Slough and Monmouth. The earliest departure is at 2:32 AM at night, and the last departure from Slough is at 3:33 PM which arrives into Monmouth at 8:27 AM. All services require a transfer at Heathrow Central Bus Station and take an average of 6h 52m. The schedules shown below are for the next available departures.



5h 20m • 3 changes



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Arrives next day



19h 10m • 3 changes



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7h 22m • 3 changes



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5h 20m • 3 changes
Want to know about travelling from Slough to Monmouth? 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 Monmouth. However, there are services departing from Slough station and arriving at Monmouth station via Bus Station station. The journey, including transfers, takes approximately 6h 52m.
Slough to Monmouth bus services, operated by First Berkshire & The Thames Valley, depart from Heathrow Central Bus Station.
Slough to Monmouth bus services, operated by First Berkshire & The Thames Valley, arrive at Chepstow Bus Station 4.
The distance between Slough and Monmouth is 150 km. The road distance is 240 km.
You can take a bus from Wellington Street Stop B to Monmouth Bus Station Stand 2 via Heathrow Central Bus Station, Bus Station, and Chepstow Bus Station Stand 1 in around 5h 44m.