The average bus between London and Dumbarton takes 11h 45m and the fastest bus takes 9h 58m. The bus service runs several times per day from London to Dumbarton. 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 London and Dumbarton. The earliest departure is at 7:30 AM in the morning, and the last departure from London is at 11:59 PM which arrives into Dumbarton at 11:10 AM. All services require a transfer at Buchanan Bus Station and take an average of 11h 45m. The schedules shown below are for the next available departures.

12h 29m • 1 change

12h 47m • 1 change

12h 2m • 1 change
Arrives next day

10h 10m • 1 change

12h 41m • 1 change

12h 29m • 1 change

12h 47m • 1 change

12h 2m • 1 change

12h 41m • 1 change

12h 29m • 1 change

12h 47m • 1 change

12h 2m • 1 change

12h 41m • 1 change

12h 29m • 1 change

12h 47m • 1 change

12h 2m • 1 change

12h 41m • 1 change

12h 42m • 1 change

13h 2m • 1 change

12h 2m • 1 change

12h 42m • 1 change

12h 47m • 1 change

12h 46m • 1 change

12h 3m • 1 change
Want to know about travelling from London to Dumbarton? 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 London to Dumbarton. However, there are services departing from London station and arriving at Dumbarton station via Buchanan Bus Station station. The journey, including transfers, takes approximately 11h 45m.
London to Dumbarton bus services, operated by National Express, depart from London Victoria station.
London to Dumbarton bus services, operated by National Express, arrive at Buchanan Bus Station.
Book your London to Dumbarton bus tickets online with National Express, First Greater Glasgow and FlixBus.
The distance between London and Dumbarton is 573.2 km. The road distance is 696 km.
FlixBus operates a bus from London Victoria to Buchanan Bus Station every 20 minutes. Tickets cost £40–70 and the journey takes 9h 15m. National Express also services this route every 4 hours.