The average train between Helensburgh and Portsmouth takes 8h 42m and the fastest train takes 7h 2m. There is a train service every few hours from Helensburgh to Portsmouth. 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 Helensburgh and Portsmouth. The earliest departure is at 6:25 AM in the morning, and the last departure from Helensburgh is at 11:32 PM which arrives into Portsmouth at 11:29 AM. All services require a transfer at Glasgow Queen Street Low Level and take an average of 8h 42m. The schedules shown below are for the next available departures.



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7h 2m • 3 changes


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8h 29m • 3 changesWant to know about travelling from Helensburgh to Portsmouth? 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 Helensburgh to Portsmouth. However, there are services departing from Helensburgh station and arriving at Portsmouth station via London Euston. The journey, including transfers, takes approximately 8h 42m.
Helensburgh to Portsmouth train services, operated by ScotRail, depart from Glasgow Central station.
Helensburgh to Portsmouth train services, operated by ScotRail, arrive at Portsmouth & Southsea station.
Book your Helensburgh to Portsmouth train tickets online with ScotRail, Avanti West Coast and 3 other operators.
The distance between Helensburgh and Portsmouth is 626.9 km. The road distance is 799 km.
You can take a train from Helensburgh Central to Portsmouth & Southsea via Glasgow Queen Street Low Level, Glasgow Central, London Euston, Euston station, Waterloo Station, and London Waterloo in around 7h 52m.