The average train between Harpenden and Portsmouth takes 2h 45m and the fastest train takes 2h 19m. The train runs at least 2 times per hour from Harpenden 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 every 30 minutes between Harpenden and Portsmouth. The earliest departure is at 4:47 AM at night, and the last departure from Harpenden is at 11:42 PM which arrives into Portsmouth at 7:16 AM. All services require a transfer at West Hampstead Thameslink and take an average of 2h 45m. The schedules shown below are for the next available departures.
Arrives next day


2h 58m • 2 changesArrives next day


7h 34m • 2 changes

2h 58m • 2 changes

2h 52m • 2 changes

2h 29m • 2 changes

2h 24m • 2 changes

2h 58m • 2 changes

2h 52m • 2 changes

2h 29m • 2 changes

2h 24m • 2 changesWant to know about travelling from Harpenden 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 Harpenden to Portsmouth. However, there are services departing from Harpenden station and arriving at Portsmouth station via Portsmouth & Southsea. The journey, including transfers, takes approximately 2h 45m.
Harpenden to Portsmouth train services, operated by Thameslink, depart from London Waterloo station.
Harpenden to Portsmouth train services, operated by Thameslink, arrive at Portsmouth & Southsea station.
Book your Harpenden to Portsmouth train tickets online with Thameslink, London Underground (Tube) and South Western Railway.
The distance between Harpenden and Portsmouth is 124.2 km. The road distance is 160 km.
South Western Railway operates a train from London Waterloo to Portsmouth & Southsea every 30 minutes. Tickets cost £27–60 and the journey takes 1h 31m.