Timetable
Train route
Cheap train tickets
  1. Trip.com
  2. Trains
  3. UK
  4. Route
  5. Southampton to Heathrow Terminal 3
UK Trains New User Gifts 2% off trains

  • 2% OFF

    Jun 19, 2024-Jun 20, 2026

    2% OFF UK Train New User Promo Code

    Jun 19, 2024-Jun 20, 2026

Southampton to Heathrow Terminal 3 train route details

FirstTrain
FirstTrain
-
LastTrain
LastTrain
-
DepartureStation
DepartureStation
-
ArrivalStation
ArrivalStation
-
JourneyTime
JourneyTime
-
Distance
Distance
-
Price
Price
-
TrainOperators
TrainOperators
-

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

Travelling in off-peak train times

Travelling in off-peak train times

We recommend buying train tickets from Southampton to Heathrow Terminal 3 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

Using the Railcard for 1/3 off

You can choose a Railcard to help you save up to 1/3 on fares from Southampton to Heathrow Terminal 3 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%

Split Tickets to save an average extra 30%

Splitting tickets is a perfectly legal practice that involves purchasing separate, cheaper tickets for different segments of your journey on the same train instead of a single ticket for the entire trip. For example, if you are travelling from Southampton to Heathrow Terminal 3, you might discover that buying a ticket from A to C, and then another ticket from C to B, is more economical than a direct ticket.
Book in advance to save an average of 61%

Book in advance to save an average of 61%

Did you know that purchasing Advance Tickets can significantly reduce your travel expenses? On average, these tickets can save you an impressive 61% on fares. The best part is that the earlier you book (ideally up to 12 weeks in advance), the greater the savings!
Group travels to save 1/3

Group travels to save 1/3

If you are travelling in a group, be sure to check out group travel discounts. Many train companies offer a ⅓ off standard fares for groups of three to nine people, making travelling from Southampton to Heathrow Terminal 3 more affordable for families, friends, or colleagues planning a trip together.

Southampton to Heathrow Terminal 3 train ticket types

Here are different ticket types available for this route, each with its own benefits and restrictions. Here are the options to consider:

Why Book Train Tickets With Trip.com?

  • Split Tickets

    Best Price Promise

    If you find trains for a cheaper price elsewhere, let us know and we'll refund the difference*

  • Split Tickets

    Split Tickets

    Save an average of 30% on train fares by splitting your Southampton to Heathrow Terminal 3 journey

  • Split Tickets

    National Rail Partners

    Official train ticket sellers with 5-star customer service

  • Split Tickets

    No Booking Fees on the App

    Only pay for your train travel – no hidden fees

Recommendations

  • Trains from Southampton

  • Trains to Heathrow Terminal 3

  • Popular Routes

  • Top Destinations

  • Popular stations

*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%.