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Trains from London St Pancras International to Southampton

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Great Western Railway

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Each fare is the lowest adult economy ticket fare found by our customers on Trainline. Fares booked further in advance than the dates displayed may be cheaper. Prices are updated daily, subject to change and indicative of price last update. Limited availability. Discount cards and coach journeys excluded, prices exclusive of booking fee.
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  3. London St Pancras International to Southampton

Trains to Southampton from London St Pancras International

It takes an average of 5h 10m to travel from London St Pancras International to Southampton by train, over a distance of around 70 miles (113 km). There are normally 2 trains per day travelling from London St Pancras International to Southampton and tickets for this journey start from £17.70 when you book in advance.

First train

20:45

Last train

00:54

Departure stationLondon St Pancras International
Arrival stationSouthampton
Journey time

From 1h 50m

Distance

70 miles (113 km)

Frequency

2 trains per day

Changes

1 change

Price

From £17.70

Train operators

CrossCountry, Great Western Railway, Southern, Thameslink

Taking the train from London St Pancras International to Southampton in 1 hour 50 minutes

Thinking about taking the train from London St Pancras International to Southampton? We've got you covered.

It usually takes around 5 hours 10 minutes to travel the 70 miles (113 km) from London St Pancras International to Southampton by train, although you can get there in as little as 1 hour 50 minutes on the fastest services. You'll normally find around 2 trains per day running on this route. You'll need to make 1 change along the way as there aren't any direct services on this line. You're likely to be travelling with Great Western Railway, Thameslink or CrossCountry to Southampton. As the main train operators on this route, all offer plenty of space for luggage and comfortable seating as standard.

Book train tickets from London St Pancras International to Southampton in advance instead of buying them on the day and they can start from £17.70. We'll always highlight the cheapest prices in our Journey Planner, for example when you travel at Off-Peak times or use a Railcard.

If you're feeling ready to book, start looking for cheap train tickets with us today. Keep reading for more information on the journey to Southampton by train, or check our timetable above to view live train times.

What do people frequently ask about the train journey from London St Pancras International to Southampton?

Want to know more about your journey from London St Pancras International to Southampton? We've compiled some of the most frequently asked questions by our customers to help you plan your journey.

How do you travel to Southampton from London St Pancras International?

To get to Southampton from London St Pancras International, why not take the train? With 2 trains per day and an average journey time of 5 hours and 10 minutes, taking the train is a great way to travel. See our Journey Planner for up-to-date times and prices.

How long does it take to get from London St Pancras International to Southampton by train?

On average, it takes around 5 hours and 10 minutes to travel from London St Pancras International to Southampton by train, although you can get there in 1 hour and 50 minutes on the fastest services. With 2 trains per day running on this route, journey times may vary, so check our Journey Planner for more information.

How much is the train ticket from London St Pancras International to Southampton?

The price of a train ticket from London St Pancras International to Southampton can start from as little as £17.70, depending on the time of day, route and class you book. Train tickets may also be cheaper when you book in advance compared to buying them on the day.

How fast can trains travel from London St Pancras International to Southampton?

The fastest time a train can travel the 70 miles (113 km) from London St Pancras International to Southampton is 1 hour and 50 minutes.

How do I find cheap train tickets from London St Pancras International to Southampton?

As most UK train companies increase their prices as the departure date approaches, our Trainline team of experts have put together these tips to help you find the cheapest tickets.

1. Book in advance

Train tickets from London St Pancras International to Southampton start at £17.70§ one way for a Standard Class ticket if you book in advance. UK train companies usually release Advance tickets up to 12 weeks ahead of time, and these can be cheaper than tickets bought on the day of travel.

2. Sign up to Ticket Alert

If you're planning a trip more than 12 weeks ahead, sign up to our Ticket Alert to get notified when Advance tickets are released for your travel date.

3. Use a Railcard

National Railcards offer a 1/3 off eligible train tickets in the UK and can be a great investment if you travel throughout the year. Buy one with us and you'll be able to store it digitally in our app, so you'll always have it on your travels.

4. Book split tickets

Our handy feature SplitSave will 'split' your train journey into multiple tickets, which can be much cheaper than buying a single ticket. Find out more about split tickets.

5. Travel Off-Peak

If you can be flexible with your travel times, Off-Peak and Super Off-Peak tickets are usually cheaper in the UK. Generally, Off-Peak times are any time at weekends and outside of Monday to Friday morning and evening rush hours.

6. Consider a Season Ticket

Best for commuters, if you catch a train on the same route more than 3 times per week, you could save money with a Season Ticket. With annual, monthly, weekly and flexi options available, find out if a Season Ticket for London St Pancras International to Southampton is right for you.

For more money-saving tips on UK and European train travel, read our cheap train tickets guide.

§Advance adult single fare. Excludes booking fee. Prices seen by Trainline customers in the last 30 days. Availability limited.
† Average savings on advance fares booked at least one week before day of travel vs Anytime fares purchased on day of travel. Subject to availability. Excludes coach.

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