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Cheap flights from London Heathrow Airport to Southampton from £116

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SOU
27 Jan — 3 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Southampton

Enter your travel dates to find the best prices.

Best flights from Heathrow to Southampton
Discover carefully curated flight deals from Heathrow to Southampton that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 December 2025.

Thu 14/520:55LHR - SOU
1 stop11h 40mKLM
Fri 29/517:20SOU - LHR
1 stop3h 35mKLM
Deal found 27/12£224
Mon 9/212:10LHR - SOU
1 stop7h 30mAer Lingus
Mon 16/216:05SOU - LHR
1 stop5h 00mAer Lingus
Deal found 25/12£231
Thu 19/206:50LHR - SOU
1 stop5h 00mMultiple Airlines
Mon 23/219:00SOU - LHR
1 stop13h 10mMultiple Airlines
Deal found 27/12£245
Fri 20/307:10LHR - SOU
1 stop10h 20mBritish Airways
Tue 24/312:00SOU - LHR
1 stop5h 10mBritish Airways
Deal found 26/12£279
Wed 7/107:00LHR - SOU
1 stop4h 45mMultiple Airlines
Sat 31/108:55SOU - LHR
1 stop7h 35mMultiple Airlines
Deal found 27/12£248
Sat 10/120:45LHR - SOU
1 stop12h 00mAer Lingus
Wed 14/112:25SOU - LHR
1 stop4h 25mAer Lingus
Deal found 26/12£263
Fri 23/119:00LHR - SOU
1 stop13h 25mMultiple Airlines
Fri 30/119:00SOU - LHR
1 stop13h 10mMultiple Airlines
Deal found 26/12£258
Thu 18/619:15LHR - SOU
1 stop13h 20mKLM
Sun 28/617:20SOU - LHR
1 stop3h 35mKLM
Deal found 25/12£312
Thu 12/206:50LHR - SOU
1 stop10h 40mBritish Airways
Mon 16/212:00SOU - LHR
1 stop7h 50mBritish Airways
Deal found 25/12£312
Sat 10/117:00LHR - SOU
2 stops15h 45mMultiple Airlines
Wed 14/112:25SOU - LHR
1 stop8h 40mMultiple Airlines
Deal found 26/12£270

Find 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 28 December 2025.

Round-trip from

£224

One-way from

£116
KLM
  • KLM
  • 14/5-29/5
  • 2 total stops
  • 15h 15m total
  • London to Southampton
Search Deals
Aer Lingus
  • Aer Lingus
  • 15/1
  • 1 total stop
  • 5h 45m total
  • London to Southampton
Search Deals

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 28 December 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

Thu 14/5

20:55-08:35

1 stop11h 40m

Southampton Eastleigh

Fri 29/5

17:20-20:55

1 stop3h 35m

£224

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 9/2

12:10-19:40

1 stop7h 30m

Southampton Eastleigh

Mon 16/2

16:05-21:05

1 stop5h 00m

£231

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 19/2

06:50-11:50

1 stop5h 00m

Southampton Eastleigh

Mon 23/2

19:00-08:10

1 stop13h 10m

£245

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 7/1

07:00-11:45

1 stop4h 45m

Southampton Eastleigh

Sat 31/1

08:55-16:30

1 stop7h 35m

£248

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 23/1

19:00-08:25

1 stop13h 25m

Southampton Eastleigh

Fri 30/1

19:00-08:10

1 stop13h 10m

£258

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 10/1

20:45-08:45

1 stop12h 00m

Southampton Eastleigh

Wed 14/1

12:25-16:50

1 stop4h 25m

£263

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 10/1

17:00-08:45

2 stops15h 45m

Southampton Eastleigh

Wed 14/1

12:25-21:05

1 stop8h 40m

£270

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 20/3

07:10-17:30

1 stop10h 20m

Southampton Eastleigh

Tue 24/3

12:00-17:10

1 stop5h 10m

£279

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 18/6

19:15-08:35

1 stop13h 20m

Southampton Eastleigh

Sun 28/6

17:20-20:55

1 stop3h 35m

£312

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 12/2

06:50-17:30

1 stop10h 40m

Southampton Eastleigh

Mon 16/2

12:00-19:50

1 stop7h 50m

£312

Flights are sorted by cheapest return flights first.

Deals found on 26/12

Showing 1-10 of 12 results
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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 28 December 2025.

When flying from London Heathrow Airport to Southampton, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

  • How long is the flight from London Heathrow Airport to Southampton?

    KLM and Aer Lingus can get you from London Heathrow Airport to Southampton in just under 7h 30m. Your travel time can differ by up to 4h 10m. London Heathrow Airport and Southampton are separated by a distance of 53 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Southampton

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Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Southampton?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Southampton. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Southampton?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Southampton for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Heathrow to Southampton with no change fees?

Need flexible booking options for your flight to Southampton from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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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