The average train between Boston and Portsmouth Harbour takes 5h 16m and the fastest train takes 4h 9m. There is a train service every few hours from Boston to Portsmouth Harbour. 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 Boston and Portsmouth Harbour. The earliest departure is at 6:13 AM in the morning, and the last departure from Boston is at 8:54 PM which arrives into Portsmouth Harbour at 7:23 AM. All services require a transfer at Grantham and take an average of 5h 16m. The schedules shown below are for the next available departures.



4h 55m • 3 changes



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4h 42m • 3 changes



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5h 5m • 3 changes



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4h 56m • 3 changes
Want to know about travelling from Boston to Portsmouth Harbour? 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 Boston to Portsmouth Harbour. However, there are services departing from Boston station and arriving at Portsmouth Harbour station via Grantham. The journey, including transfers, takes approximately 5h 16m.
Boston to Portsmouth Harbour train services, operated by East Midlands Railways, depart from Boston station.
Boston to Portsmouth Harbour train services, operated by East Midlands Railways, arrive at Portsmouth Harbour station.
Book your Boston to Portsmouth Harbour train tickets online with East Midlands Railways, London North Eastern Railway Limited (LNER) and 2 other operators.
The distance between Boston and Portsmouth Harbour is 253.4 km. The road distance is 347 km.
You can take a train from Boston to Portsmouth Harbour via Grantham, London Kings Cross, Euston station, Waterloo Station, London Waterloo, and Portsmouth Harbour in around 4h 24m.