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Cheap flights from London Heathrow Airport to Southampton from £90

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SOU
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Heathrow to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 July 2025.

Round-trip from

£194

One-way from

£90
5/9-9/9
  • 5/9-9/9
  • 2 total stops
  • 20h 20m total
  • London to Southampton
Search Deals
15/12
  • 15/12
  • 1 total stop
  • 9h 25m total
  • London to Southampton
Search Deals

Find flight deals from Heathrow to Southampton

Cheapest flights from Heathrow to Southampton
Explore the most affordable flight options available from Heathrow to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Fri 5/920:55LHR - SOU
1 stop11h 00mMultiple Airlines
Tue 9/912:25SOU - LHR
1 stop9h 20mMultiple Airlines
Deal found 9/7£194
Thu 7/820:55LHR - SOU
1 stop11h 50mKLM
Wed 13/809:20SOU - LHR
1 stop6h 55mKLM
Deal found 9/7£227
Wed 20/821:10LHR - SOU
1 stop11h 30mAer Lingus
Wed 27/809:10SOU - LHR
1 stop5h 45mAer Lingus
Deal found 9/7£269
Fri 10/1007:25LHR - SOU
1 stop4h 35mBritish Airways
Thu 16/1016:35SOU - LHR
1 stop4h 10mBritish Airways
Deal found 11/7£333

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow to Southampton that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Southampton that are best for you.

Fly from

Heathrow

Fly to

Southampton

Route

Depart

Return

Price

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 5/9

20:55-07:55

1 stop11h 00m

Southampton Eastleigh

Tue 9/9

12:25-21:45

1 stop9h 20m

£194

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 7/8

20:55-08:45

1 stop11h 50m

Southampton Eastleigh

Wed 13/8

09:20-16:15

1 stop6h 55m

£227

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 20/8

21:10-08:40

1 stop11h 30m

Southampton Eastleigh

Wed 27/8

09:10-14:55

1 stop5h 45m

£269

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 10/10

07:25-12:00

1 stop4h 35m

Southampton Eastleigh

Thu 16/10

16:35-20:45

1 stop4h 10m

£333

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 15/12

09:55-19:20

1 stop9h 25m

£90

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 5/9

14:20-19:30

1 stop5h 10m

£227

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Best time to book a flight from Heathrow to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Southampton

What is the cheapest time of day to fly from LHR to SOU?

Find hourly flight availability from Heathrow to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

It’s typically best to fly out from London Heathrow Airport to Southampton at midday. Doing so could potentially save you 37% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Southampton

Get insights into the airlines that provide service to Southampton. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southampton. Reviews last updated 11 July 2025.
See what other customers who have flown with KLM, Aer Lingus, andBritish Airways from London Heathrow Airport to Southampton have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,372 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Aer Lingus
7.1
Good
1,154 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
British Airways
6.6
Okay
7,109 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Southampton from London Heathrow?

    Located just 3.5 mi from the city center, Southampton Eastleigh is the airport most travelers will use when flying to Southampton from London Heathrow. Booking flights from London Heathrow to Eastleigh (SOU) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 0 different airlines.

  • What are the cheapest airlines flying from London Heathrow Airport to Southampton round-trip?

    Currently priced at £227, KLM will fly you from London Heathrow Airport to Southampton and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Aer Lingus and British Airways - these airlines can fly you to your destination from £269 and £333, respectively.

  • Can I find deals for flights from Heathrow to Southampton that include hotel bookings?

    Yes. In addition to deals on Heathrow to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Southampton.

  • Can I find deals for business class flights from Heathrow to Southampton?

    Yes. Cheapflights offers flight deals from Heathrow to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Southampton?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Southampton (average of £203). Flying from London Heathrow Airport to Southampton in November is currently the most expensive (average of £262). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Heathrow to Southampton

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Can Cheapflights notify me if prices for flights from Heathrow to Southampton become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Southampton on Cheapflights with our Price Alert feature and get notified when better prices are available.

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