The average train between Dumbarton and Southampton takes 8h 21m and the fastest train takes 7h. There is a train service every few hours from Dumbarton to Southampton. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run hourly between Dumbarton and Southampton. The earliest departure is at 6:47 AM in the morning, and the last departure from Dumbarton is at 11:47 PM which arrives into Southampton at 12:51 PM. All services require a transfer at Partick and take an average of 8h 21m. The schedules shown below are for the next available departures.




7h • 4 changes




7h 34m • 4 changes
Arrives next day




7h 58m • 4 changes
Arrives next day




13h 12m • 4 changes




7h 1m • 4 changes




7h 1m • 4 changes




7h 7m • 4 changes




7h 1m • 4 changes




7h 1m • 4 changes




7h 1m • 4 changes




7h 7m • 4 changes




7h 1m • 4 changes




7h 1m • 4 changes




7h 1m • 4 changes




7h 7m • 4 changes




7h 1m • 4 changes
Want to know about travelling from Dumbarton to Southampton? 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 train from Dumbarton to Southampton. However, there are services departing from Dumbarton station and arriving at Southampton station via London Euston. The journey, including transfers, takes approximately 8h 21m.
Dumbarton to Southampton train services, operated by ScotRail, depart from Glasgow Central station.
Dumbarton to Southampton train services, operated by ScotRail, arrive at Southampton Central station.
Book your Dumbarton to Southampton train tickets online with ScotRail, Avanti West Coast and 3 other operators.
The distance between Dumbarton and Southampton is 598.3 km. The road distance is 795 km.
You can take a train from Dumbarton Central to Southampton Central via Partick, Glasgow Central Low Level, Glasgow Central, London Euston, Euston station, Waterloo Station, and London Waterloo in around 7h 41m.