The average train between Southampton and Llandeilo takes 7h 26m and the fastest train takes 5h 38m. The train service runs several times per day from Southampton 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 Southampton and Llandeilo. The earliest departure is at 9:57 AM in the morning, and the last departure from Southampton is at 9:12 PM which arrives into Llandeilo at 12:07 PM. All services require a transfer at Cardiff Central and take an average of 7h 26m. The schedules shown below are for the next available departures.


5h 39m • 2 changes


5h 38m • 2 changes
Arrives next day


9h 3m • 2 changes


5h 39m • 2 changes


5h 38m • 2 changes
Arrives next day


9h 3m • 2 changes


5h 39m • 2 changes


5h 38m • 2 changes
Arrives next day


9h 3m • 2 changes


5h 39m • 2 changes


5h 38m • 2 changes
Arrives next day


8h 41m • 2 changes
Want to know about travelling from Southampton 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 Southampton to Llandeilo. However, there are services departing from Southampton station and arriving at Llandeilo station via Cardiff Central. The journey, including transfers, takes approximately 7h 26m.
Southampton to Llandeilo train services, operated by Great Western Railway (GWR), depart from Southampton Central station.
Southampton to Llandeilo train services, operated by Great Western Railway (GWR), arrive at Llandeilo station.
Book your Southampton to Llandeilo train tickets online with Great Western Railway (GWR) and Transport for Wales.
The distance between Southampton and Llandeilo is 210.1 km. The road distance is 307 km.
You can take a train from Southampton Central to Llandeilo via Cardiff Central and Swansea in around 5h 46m.