The average train between Portsmouth and Harpenden takes 2h 42m and the fastest train takes 2h 26m. There is an hourly train service from Portsmouth to Harpenden. 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 Portsmouth and Harpenden. The earliest departure is at 4:35 AM at night, and the last departure from Portsmouth is at 10:37 PM which arrives into Harpenden at 1:39 AM. All services require a transfer at London Waterloo Station and take an average of 2h 42m. The schedules shown below are for the next available departures.


2h 40m • 2 changes


2h 43m • 2 changes


2h 49m • 2 changes


2h 40m • 2 changes


2h 42m • 2 changes


2h 58m • 2 changes


2h 41m • 2 changes


2h 52m • 2 changes


2h 27m • 2 changes


2h 40m • 2 changes


2h 28m • 2 changes


2h 28m • 2 changes
Want to know about travelling from Portsmouth to Harpenden? 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 Portsmouth to Harpenden. However, there are services departing from Portsmouth station and arriving at Harpenden station via London Waterloo. The journey, including transfers, takes approximately 2h 42m.
Portsmouth to Harpenden train services, operated by South Western Railway, depart from Portsmouth & Southsea station.
Portsmouth to Harpenden train services, operated by South Western Railway, arrive at London Waterloo station.
Book your Portsmouth to Harpenden train tickets online with South Western Railway, London Underground (Tube) and Thameslink.
The distance between Portsmouth and Harpenden is 124.2 km. The road distance is 160 km.
South Western Railway operates a train from Portsmouth & Southsea to London Waterloo every 30 minutes. Tickets cost £30–70 and the journey takes 1h 31m.