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Heathrow Terminal 3 to Southampton train prices and times

Use Trip.com to purchase tickets from Heathrow Terminal 3 to Southampton. To get more discounts, consider buying split tickets. Additionally, booking in advance is a good option.

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Sat, Sep 13
Sun, Sep 14
Mon, Sep 15
Tue, Sep 16
Wed, Sep 17
Thu, Sep 18
Fri, Sep 19

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Heathrow Terminal 3 to Southampton train route details

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How to book cheap train tickets from Heathrow Terminal 3 to Southampton

Travelling in off-peak train times

We recommend buying train tickets from Heathrow Terminal 3 to Southampton during off-peak hours. These times are usually before 06:30, between 09:30 and 16:00, and after 19:00 on weekdays, as well as all day on weekends and bank holidays. Choosing Off-Peak train tickets means benefiting from cheaper fares and less crowded trains, making your journey more enjoyable.

Using the Railcard for 1/3 off

You can choose a Railcard to help you save up to 1/3 on fares from Heathrow Terminal 3 to Southampton for various reasons, such as your age (including the 16-25 Railcard or Senior Railcard) or options geared towards group travel (Family & Friends Railcard and Two Together Railcard). Discover more here.

Split Tickets to save an average extra 30%

Splitting tickets involves buying separate, cheaper tickets for different parts of your journey on the same train instead of just one ticket for the entire trip. For instance, if you're travelling from Heathrow Terminal 3 to Southampton, you might find that purchasing a ticket from A to C, then C to B costs less than a direct ticket. This method is perfectly legal and often doesn’t require leaving your seat.

Book in advance to save an average of 61%

Advance Tickets are typically released up to 12 weeks before the travel date and can offer significant savings compared to tickets purchased closer to departure. By planning your trip from Heathrow Terminal 3 to Southampton ahead of time and booking your tickets early, you can potentially save up to 61% on your travel expenses.

Group travels to save 1/3

If you are planning a trip with a group of three to nine people, take advantage of ⅓ off standard fares with group travel discounts, offered by many train companies, perfect for journeys with your family, friends, or colleagues.

Heathrow Terminal 3 to Southampton train ticket types

There are various ticket types available for this route, each with different benefits and restrictions. Explore below to see which ticket type is best suited to your travel needs:

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Why Book Train Tickets With Trip.com?

Best Price Promise
If you find trains for a cheaper price elsewhere, let us know and we'll refund the difference*
Split Tickets
Save an average of 30% on train fares by splitting your Heathrow Terminal 3 to Southampton journey
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No Booking Fees on the App
Only pay for your train travel – no hidden fees

*After comparing the full year of 2023 for Split tickets and full-price tickets on Trip.com, the average savings rate for Split tickets is 30%.

Heathrow Terminal 3 to Southampton trains

Save an average of 30%* with Split Tickets

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Heathrow Terminal 3 to Southampton train prices and times

Heathrow Terminal 3 to Southampton train route details