The average train between Caerphilly and Southampton takes 3h 12m and the fastest train takes 2h 57m. There is a train service every few hours from Caerphilly to Southampton. 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 Caerphilly and Southampton. The earliest departure is at 6:03 AM in the morning, and the last departure from Caerphilly is at 11:09 PM which arrives into Southampton at 12:03 PM. All services require a transfer, and take on average 3h 12m. The schedules shown below are for the next available departures.

3h 4m • 1 change

3h 3m • 1 change

3h 3m • 1 change

3h 3m • 1 change

2h 57m • 1 change

3h 3m • 1 change

3h 3m • 1 change

3h 4m • 1 change

3h 22m • 1 change

3h 22m • 1 change

3h 24m • 1 change

3h 24m • 1 change

2h 59m • 1 change

3h 5m • 1 change

3h 3m • 1 change

3h 3m • 1 change
Want to know about travelling from Caerphilly to Southampton? 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 Caerphilly to Southampton. However, there are services departing from Caerphilly station and arriving at Southampton station via Southampton Central. The journey, including transfers, takes approximately 3h 12m.
Caerphilly to Southampton train services, operated by Transport for Wales, depart from Cardiff Central station.
Caerphilly to Southampton train services, operated by Transport for Wales, arrive at Southampton Central station.
Book your Caerphilly to Southampton train tickets online with Transport for Wales and Great Western Railway (GWR).
The distance between Caerphilly and Southampton is 146.6 km. The road distance is 197 km.
Great Western Railway (GWR) operates a train from Cardiff Central to Southampton Central hourly. Tickets cost £50–100 and the journey takes 2h 34m.