The average train between London and Llandeilo takes 5h 20m and the fastest train takes 3h 54m. The train service runs several times per day from London 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 4 times a day between London and Llandeilo. The earliest departure is at 7:48 AM in the morning, and the last departure from London is at 10:49 PM which arrives into Llandeilo at 6:14 AM. All services require a transfer, and take on average 5h 20m. The schedules shown below are for the next available departures.

3h 54m • 1 change

4h 3m • 1 change

4h • 1 change
Arrives next day

7h 3m • 1 change

3h 57m • 1 change

4h 4m • 1 change

4h 1m • 1 change
Arrives next day

15h 24m • 1 change

3h 54m • 1 change

4h 3m • 1 change

4h • 1 change
Arrives next day

7h 25m • 1 change

3h 54m • 1 change

4h 3m • 1 change

4h • 1 change
Arrives next day

7h 25m • 1 change
Want to know about travelling from London 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 London to Llandeilo. However, there are services departing from London station and arriving at Llandeilo station via Swansea. The journey, including transfers, takes approximately 5h 20m.
London to Llandeilo train services, operated by Great Western Railway (GWR), depart from London Paddington station.
London to Llandeilo train services, operated by Great Western Railway (GWR), arrive at Llandeilo station.
Book your London to Llandeilo train tickets online with Great Western Railway (GWR) and Transport for Wales.
The distance between London and Llandeilo is 269.7 km. The road distance is 355 km.
You can take a train from London Paddington to Llandeilo via Swansea in around 4h 56m.