The average bus between Dumbarton and Castlemilk takes 1h 55m and the fastest bus takes 1h 28m. The bus runs at least 3 times per hour from Dumbarton to Castlemilk. 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 20 minutes between Dumbarton and Castlemilk. The earliest departure is at 9:22 AM in the morning, and the last departure from Dumbarton is at 5:58 PM which arrives into Castlemilk at 7:52 PM. All services require a transfer at Hielenman's Umbrella and take an average of 1h 55m. The schedules shown below are for the next available departures.

1h 51m • 1 change

1h 51m • 1 change

1h 54m • 1 change

1h 50m • 1 change
Want to know about travelling from Dumbarton to Castlemilk? 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 Dumbarton to Castlemilk. However, there are services departing from Dumbarton station and arriving at Castlemilk station via Hielenman's Umbrella. The journey, including transfers, takes approximately 1h 55m.
Dumbarton to Castlemilk bus services, operated by First Greater Glasgow, depart from Quay Street station.
Dumbarton to Castlemilk bus services, operated by First Greater Glasgow, arrive at Glenwood Business Centre station.
The distance between Dumbarton and Castlemilk is 26.3 km. The road distance is 37 km.
You can take a bus from Quay Street to Glenwood Business Centre via Hielenman's Umbrella and Central Station in around 1h 46m.