The average bus between Prestwick and Dumbarton takes 2h 23m and the fastest bus takes 1h 34m. There is a bus service every few hours from Prestwick 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 hourly between Prestwick and Dumbarton. The earliest departure is at 6:33 AM in the morning, and the last departure from Prestwick is at 11:50 PM which arrives into Dumbarton at 6:47 AM. All services require a transfer, and take on average 2h 23m. The schedules shown below are for the next available departures.

2h 24m • 1 change
2h 36m • 1 changeArrives next day

7h 57m • 1 change
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1h 51m • 1 change
1h 54m • 1 change
1h 39m • 1 change
1h 49m • 1 change
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1h 44m • 1 change
1h 42m • 1 change
1h 44m • 1 change
1h 56m • 1 change
1h 54m • 1 change
2h 9m • 1 change
2h 4m • 1 changeWant to know about travelling from Prestwick 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 Prestwick to Dumbarton. However, there are services departing from Prestwick station and arriving at Dumbarton station via Buchanan Bus Station station. The journey, including transfers, takes approximately 2h 23m.
Prestwick to Dumbarton bus services, operated by Stagecoach West Scotland, depart from Station Road.
Prestwick to Dumbarton bus services, operated by Stagecoach West Scotland, arrive at Barloan Toll station.
The distance between Prestwick and Dumbarton is 49.7 km. The road distance is 76 km.
You can take a bus from Station Road to Barloan Toll via Buchanan Bus Station in around 1h 47m.