The average train between Portsmouth and Llandeilo takes 8h 10m and the fastest train takes 6h 22m. The train service runs several times per day from Portsmouth to Llandeilo. 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 3 times a day between Portsmouth and Llandeilo. The earliest departure is at 9:14 AM in the morning, and the last departure from Portsmouth is at 8:28 PM which arrives into Llandeilo at 6:14 AM. All services require a transfer at Cardiff Central and take an average of 8h 10m. The schedules shown below are for the next available departures.


6h 23m • 2 changes


6h 22m • 2 changes
Arrives next day


9h 45m • 2 changes


6h 23m • 2 changes


6h 22m • 2 changes
Arrives next day


9h 24m • 2 changes


6h 25m • 2 changes


6h 22m • 2 changes
Arrives next day


15h 27m • 2 changes
Arrives next day


15h 39m • 2 changes
Want to know about travelling from Portsmouth to Llandeilo? 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 Portsmouth to Llandeilo. However, there are services departing from Portsmouth station and arriving at Llandeilo station via Cardiff Central. The journey, including transfers, takes approximately 8h 10m.
Portsmouth to Llandeilo train services, operated by Great Western Railway (GWR), depart from Portsmouth & Southsea station.
Portsmouth to Llandeilo train services, operated by Great Western Railway (GWR), arrive at Llandeilo station.
Book your Portsmouth to Llandeilo train tickets online with Great Western Railway (GWR) and Transport for Wales.
The distance between Portsmouth and Llandeilo is 234.9 km. The road distance is 346 km.
You can take a train from Portsmouth & Southsea to Llandeilo via Cardiff Central and Swansea in around 6h 30m.