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Outbound fromLondon St Pancras International to Portsmouth by train
It takes an average of 3h 6m to travel from London St Pancras International to Portsmouth by train, over a distance of around 64 miles (104 km). There are normally 59 trains per day travelling from London St Pancras International to Portsmouth and tickets for this journey start from £12.70 when you book in advance.
| First train | 03:32 | |
|---|---|---|
| Last train | 00:54 | |
| Departure station | London St Pancras International | |
| Arrival station | Portsmouth | |
| Journey time | From 2h 13m | |
| Distance | 64 miles (104 km) | |
| Frequency | 59 trains per day | |
| Changes | 1 change | |
| Price | From £12.70 | |
| Train operators | Great Western Railway, South Western Railway, Thameslink, Southern |
Travel from London St Pancras International to Portsmouth by train in 2 hours 13 minutes
If you want to know more about the journey from London St Pancras International to Portsmouth by train, look no further!
The average journey time from London St Pancras International to Portsmouth by train is 3 hours 6 minutes, although on the fastest services it can take just 2 hours 13 minutes. You'll usually find 59 trains per day travelling the 64 miles (104 km) between these two destinations. You'll need to make 1 change along the way to Portsmouth. You'll be travelling with Great Western Railway, South Western Railway or Thameslink on your way to Portsmouth, as these are the main rail operators on this route.
Plan your trip ahead of time and book early if you want to snap up the cheapest fares. Tickets from London St Pancras International to Portsmouth start from £12.70 when you book in advance, so use our Journey Planner to view the latest prices. Travelling Off-Peak or using a Railcard are also great ways to save.
Keep reading for more information about the train journey to Portsmouth, including FAQs, and tips on booking cheap train tickets. Check the timetable above for live train times or if you're ready to book, just start a search for tickets with us today.
Journey details
Want to know more about your journey from London St Pancras International to Portsmouth? We've compiled some of the most frequently asked questions by our customers to help you plan your journey.
How long does the train from London St Pancras International to Portsmouth take?
The average journey time by train between London St Pancras International and Portsmouth is 3 hours and 6 minutes, with around 59 trains per day. The journey time may be longer on weekends and holidays, so use our Journey Planner on this page to search for a specific travel date.
What's the fastest journey time between London St Pancras International and Portsmouth by train?
The fastest journey time by train from London St Pancras International to Portsmouth is 2 hours and 13 minutes.
How much does the train from London St Pancras International to Portsmouth cost?
Train ticket prices from London St Pancras International to Portsmouth can start from as little as £12.70 when you book in advance. The cost of tickets can vary depending on the time of day, route and class you book and are usually more expensive if you book on the day.
Is there a direct train from London St Pancras International to Portsmouth?
No, there are no direct train services from London St Pancras International to Portsmouth. Travelling from London St Pancras International to Portsmouth by train will require a minimum of 1 change.
What time does the first train from London St Pancras International to Portsmouth leave?
The first train from London St Pancras International to Portsmouth leaves at 03:32. Times and services may vary during weekends and holidays.
What time does the last train from London St Pancras International to Portsmouth leave?
The last train from London St Pancras International to Portsmouth leaves at 00:54. Trains that depart in the early morning hours or very late evening may be sleeper services, time and services may also vary during weekends and holidays.
What's the distance between London St Pancras International and Portsmouth by train?
Trains travelling from London St Pancras International to Portsmouth cover a distance of around 64 miles (104 km) during the journey.
Looking for more information?
If you’re looking for the return train journey, check out trains from Portsmouth to London St Pancras International.
Cheap train tickets from London St Pancras International to Portsmouth
Book in advance
Look out for Advance tickets – they usually come out up to 12 weeks before the departure date and can be cheaper than buying on the day. If you’re here a tad early, sign up for our Advance ticket alert today to get notified when your tickets are released.
Consider a Season Ticket
If you catch this train more than 3 times per week, you could save money with a Season Ticket. With annual, monthly and weekly options available, find out if a season ticket for London St Pancras International to Portsmouth is right for you.
Use your Railcard
National Railcards offer a 1/3 off eligible train tickets in the UK and can be a great investment if you travel a few times or more in a year. Find out how you can save with a National Railcard here.
Split your tickets
Download our app to find split tickets — courtesy of SplitSave, our handy feature which 'splits' your train tickets where possible to find you a better deal. Learn more about the clever tech behind split tickets, and how to spot SplitSave discounts in our app.
For more money-saving tips on UK and European train travel, read our cheap train tickets guide.