The average train between Central London and Portsmouth takes 2h 46m and the fastest train takes 2h 31m. There is an hourly train service from Central London to Portsmouth. 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 Central London and Portsmouth. The earliest departure is at 5:39 AM in the morning, and the last departure from Central London is at 8:54 PM which arrives into Portsmouth at 11:53 PM. All services require a transfer, and take on average 2h 46m. The schedules shown below are for the next available departures.

2h 37m • 1 change

2h 38m • 1 change

2h 38m • 1 change

2h 37m • 1 change

2h 37m • 1 change

2h 31m • 1 change

2h 37m • 1 change

2h 43m • 1 change

2h 37m • 1 change

2h 31m • 1 change

2h 37m • 1 change

2h 43m • 1 change
Want to know about travelling from Central London to Portsmouth? 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 Central London to Portsmouth. However, there are services departing from Central London station and arriving at Portsmouth station via Portsmouth & Southsea. The journey, including transfers, takes approximately 2h 46m.
Central London to Portsmouth train services, operated by South Western Railway, depart from Clapham Junction station.
Central London to Portsmouth train services, operated by South Western Railway, arrive at Portsmouth & Southsea station.
Book your Central London to Portsmouth train tickets online with South Western Railway and Southern.
The distance between Central London and Portsmouth is 94.5 km. The road distance is 144 km.
Southern operates a train from Clapham Junction to Portsmouth & Southsea hourly. Tickets cost £40–85 and the journey takes 1h 56m. South Western Railway also services this route every 4 hours.