The average train between Hounslow and Llanelli takes 4h 9m and the fastest train takes 3h 42m. There is a train service every few hours from Hounslow to Llanelli. 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 Hounslow and Llanelli. The earliest departure is at 6:16 AM in the morning, and the last departure from Hounslow is at 10:32 PM which arrives into Llanelli at 5:31 AM. All services require a transfer at Reading and take an average of 4h 9m. The schedules shown below are for the next available departures.


3h 54m • 2 changes

4h 1m • 2 changes

4h • 2 changes

4h 3m • 2 changes

4h 29m • 2 changes

3h 46m • 2 changes

4h 17m • 2 changes

3h 49m • 2 changes

3h 44m • 2 changes

3h 43m • 2 changes

3h 47m • 2 changes

3h 58m • 2 changes

3h 44m • 2 changes

3h 43m • 2 changes

3h 47m • 2 changes

3h 58m • 2 changesWant to know about travelling from Hounslow to Llanelli? 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 Hounslow to Llanelli. However, there are services departing from Hounslow station and arriving at Llanelli station via Reading. The journey, including transfers, takes approximately 4h 9m.
Hounslow to Llanelli train services, operated by Elizabeth Line (TfL), depart from Southall station.
Hounslow to Llanelli train services, operated by Elizabeth Line (TfL), arrive at Swansea station.
Book your Hounslow to Llanelli train tickets online with Elizabeth Line (TfL), Great Western Railway (GWR) and Transport for Wales.
The distance between Hounslow and Llanelli is 263.7 km. The road distance is 309 km.
You can take a train from Southall to Llanelli via Reading and Swansea in around 4h 12m.