The average bus between Prestwick and Dumbarton takes 2h 29m and the fastest bus takes 1h 53m. 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 6:13 AM in the morning, and the last departure from Prestwick is at 11:50 PM which arrives into Dumbarton at 7:44 AM. All services require a transfer at Waterloo Lane and take an average of 2h 29m. The schedules shown below are for the next available departures.

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2h 11m • 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 Station Road and arriving at Riverside Lane station via Waterloo Lane station. The journey, including transfers, takes approximately 2h 29m.
Prestwick to Dumbarton bus services, operated by Stagecoach West Scotland, depart from Station Road.
Prestwick to Dumbarton bus services, operated by First Greater Glasgow, arrive at Riverside Lane station.
The distance between Prestwick and Dumbarton is 49.7 km. The road distance is 69 km.
You can take a bus from Station Road to Riverside Lane via Waterloo Lane and Howard Street in around 2h 12m.