The average train between Llanelli and St Pancras International Station takes 3h 57m and the fastest train takes 3h 19m. There is a train service every few hours from Llanelli to St Pancras International Station. 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 Llanelli and St Pancras International Station. The earliest departure is at 5:03 AM in the morning, and the last departure from Llanelli is at 11:10 PM which arrives into St Pancras International Station at 7:35 AM. All services require a transfer at Swansea and take an average of 3h 57m. The schedules shown below are for the next available departures.


3h 38m • 2 changes


3h 33m • 2 changes


3h 42m • 2 changes


3h 30m • 2 changes


3h 32m • 2 changes


3h 28m • 2 changes


3h 38m • 2 changes


3h 33m • 2 changes


3h 32m • 2 changes


3h 28m • 2 changes


3h 38m • 2 changes


3h 33m • 2 changes
Want to know about travelling from Llanelli to St Pancras International Station? 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 Llanelli to St Pancras International Station. However, there are services departing from Llanelli station and arriving at St Pancras International Station station via London Paddington. The journey, including transfers, takes approximately 3h 57m.
Llanelli to St Pancras International Station train services, operated by Transport for Wales, depart from Swansea station.
Llanelli to St Pancras International Station train services, operated by Transport for Wales, arrive at London Paddington station.
Book your Llanelli to St Pancras International Station train tickets online with Transport for Wales, Great Western Railway (GWR) and London Underground (Tube).
The distance between Llanelli and St Pancras International Station is 279.3 km. The road distance is 327 km.
Great Western Railway (GWR) operates a train from Swansea to London Paddington hourly. Tickets cost £85–160 and the journey takes 2h 52m.