The average train between Barry and Portsmouth takes 3h 59m and the fastest train takes 3h 50m. There is a train service every few hours from Barry 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 Barry and Portsmouth. The earliest departure is at 5:54 AM in the morning, and the last departure from Barry is at 11:13 PM which arrives into Portsmouth at 12:46 PM. All services require a transfer, and take on average 3h 59m. The schedules shown below are for the next available departures.

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3h 53m • 1 changeWant to know about travelling from Barry 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 Barry to Portsmouth. However, there are services departing from Cardiff Central station and arriving at Portsmouth & Southsea station via Portsmouth & Southsea station. The journey, including transfers, takes approximately 3h 59m.
Barry to Portsmouth train services, operated by Great Western Railway (GWR), depart from Cardiff Central station.
Barry to Portsmouth train services, operated by Great Western Railway (GWR), arrive at Portsmouth & Southsea station.
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The distance between Barry and Portsmouth is 167 km. The road distance is 225 km.
Great Western Railway (GWR) operates a train from Cardiff Central to Portsmouth & Southsea hourly. Tickets cost £55–110 and the journey takes 3h 18m.