The average train between Harrow and Llanelli takes 4h 4m and the fastest train takes 3h 40m. There is a train service every few hours from Harrow 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 Harrow and Llanelli. The earliest departure is at 6:11 AM in the morning, and the last departure from Harrow is at 10:10 PM which arrives into Llanelli at 5:31 AM. All services require a transfer at Paddington station and take an average of 4h 4m. The schedules shown below are for the next available departures.


3h 50m • 2 changes

3h 42m • 2 changes

3h 44m • 2 changes

3h 53m • 2 changes

3h 49m • 2 changes

3h 47m • 2 changes

3h 50m • 2 changes

3h 46m • 2 changes

3h 49m • 2 changes

3h 47m • 2 changes

3h 50m • 2 changes

3h 46m • 2 changesWant to know about travelling from Harrow 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 Harrow to Llanelli. However, there are services departing from Harrow station and arriving at Llanelli station via Swansea. The journey, including transfers, takes approximately 4h 4m.
Harrow to Llanelli train services, operated by London Underground (Tube), depart from London Paddington station.
Harrow to Llanelli train services, operated by London Underground (Tube), arrive at Swansea station.
Book your Harrow to Llanelli train tickets online with London Underground (Tube), Great Western Railway (GWR) and Transport for Wales.
The distance between Harrow and Llanelli is 264.2 km. The road distance is 337 km.
Great Western Railway (GWR) operates a train from London Paddington to Swansea hourly. Tickets cost £80–160 and the journey takes 2h 52m.