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Cheap flights from London Heathrow Airport to Southampton from £130

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
2 Dec — 9 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Heathrow to Southampton

Enter your travel dates to find the best prices.

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 2 November 2025.

Sat 29/1108:55LHR - SOU
1 stop5h 55mMultiple Airlines
Sat 6/1215:20SOU - LHR
1 stop6h 05mMultiple Airlines
Deal found 1/11£262
Sat 15/1118:45LHR - SOU
1 stop14h 00mAer Lingus
Wed 19/1120:10SOU - LHR
1 stop11h 55mAer Lingus
Deal found 31/10£276
Sat 29/1107:45LHR - SOU
1 stop4h 20mBritish Airways
Tue 2/1214:35SOU - LHR
1 stop5h 50mBritish Airways
Deal found 31/10£283
Wed 5/1107:50LHR - SOU
1 stop7h 45mAer Lingus
Wed 12/1116:05SOU - LHR
1 stop5h 00mAer Lingus
Deal found 31/10£288
Sat 8/1119:35LHR - SOU
1 stop13h 10mAer Lingus
Sun 7/1209:30SOU - LHR
1 stop4h 55mAer Lingus
Deal found 2/11£323
Fri 7/1121:10LHR - SOU
1 stop14h 55mMultiple Airlines
Sun 9/1118:25SOU - LHR
1 stop15h 45mMultiple Airlines
Deal found 2/11£331
Tue 9/1206:25LHR - SOU
1 stop5h 40mBritish Airways
Tue 9/1214:35SOU - LHR
1 stop5h 50mBritish Airways
Deal found 1/11£339
Sun 30/1106:30LHR - SOU
1 stop10h 55mKLM
Sun 7/1218:05SOU - LHR
1 stop13h 35mKLM
Deal found 2/11£344
Sun 30/1106:50LHR - SOU
1 stop11h 00mMultiple Airlines
Sun 7/1211:35SOU - LHR
1 stop6h 30mMultiple Airlines
Deal found 2/11£347
Sat 15/1106:55LHR - SOU
1 stop5h 10mMultiple Airlines
Wed 19/1114:25SOU - LHR
2 stops8h 00mMultiple Airlines
Deal found 31/10£366

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 2 November 2025.

Round-trip from

£262

One-way from

£130
29/11-6/12
  • 29/11-6/12
  • 2 total stops
  • 12h 00m total
  • London to Southampton
Search Deals
British Airways
  • British Airways
  • 15/12
  • 1 total stop
  • 25h 25m 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 2 November 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

Sat 29/11

08:55-14:50

1 stop5h 55m

Southampton Eastleigh

Sat 6/12

15:20-21:25

1 stop6h 05m

£262

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 15/11

18:45-08:45

1 stop14h 00m

Southampton Eastleigh

Wed 19/11

20:10-08:05

1 stop11h 55m

£276

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 29/11

07:45-12:05

1 stop4h 20m

Southampton Eastleigh

Tue 2/12

14:35-20:25

1 stop5h 50m

£283

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 22/11

06:55-12:05

1 stop5h 10m

Southampton Eastleigh

Tue 25/11

14:35-20:25

1 stop5h 50m

£288

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 15/12

18:10-14:20

1 stop20h 10m

Southampton Eastleigh

Mon 22/12

18:10-15:55

1 stop21h 45m

£288

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 27/3

07:10-17:20

1 stop10h 10m

Southampton Eastleigh

Tue 31/3

12:35-19:45

1 stop7h 10m

£295

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Tue 9/12

06:25-12:05

1 stop5h 40m

Southampton Eastleigh

Tue 9/12

14:35-20:25

1 stop5h 50m

£339

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sun 30/11

08:40-17:25

1 stop8h 45m

Southampton Eastleigh

Sun 7/12

18:05-07:40

1 stop13h 35m

£344

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 15/12

07:00-08:25

1 stop25h 25m

£130

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sun 4/1

07:45-18:00

1 stop10h 15m

£163

Flights are sorted by cheapest return flights first.

Deals found on 31/10

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 2 November 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?

    Aer Lingus and British Airways can get you from London Heathrow Airport to Southampton in just under 4h 20m. Your travel time can differ by up to 9h 40m. 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

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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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