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Cheap flights from London Heathrow Airport to Southampton from £128

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SOU
27 dic — 3 gen1
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 27 novembre 2025.

mer 10/1207:50LHR - SOU
1 stop7h 45mMultiple Airlines
dom 14/1215:25SOU - LHR
1 stop6h 00mMultiple Airlines
Deal found 24/11£294
ven 26/1214:15LHR - SOU
1 stop5h 25mAer Lingus
ven 2/120:10SOU - LHR
1 stop11h 55mAer Lingus
Deal found 26/11£297
gio 11/1215:10LHR - SOU
1 stop4h 30mAer Lingus
lun 15/1216:05SOU - LHR
1 stop5h 00mAer Lingus
Deal found 26/11£298
mer 24/1207:00LHR - SOU
1 stop3h 55mMultiple Airlines
mer 31/1208:35SOU - LHR
1 stop11h 55mMultiple Airlines
Deal found 26/11£320
mar 23/1219:50LHR - SOU
1 stop15h 05mMultiple Airlines
mar 30/1214:45SOU - LHR
1 stop5h 40mMultiple Airlines
Deal found 25/11£332
lun 1/1214:25LHR - SOU
1 stop4h 55mBritish Airways
ven 2/117:05SOU - LHR
1 stop5h 25mBritish Airways
Deal found 26/11£371
mar 23/1209:50LHR - SOU
1 stop5h 45mAer Lingus
mar 30/1220:10SOU - LHR
1 stop11h 55mAer Lingus
Deal found 25/11£388
ven 28/1121:10LHR - SOU
1 stop14h 55mMultiple Airlines
dom 30/1118:25SOU - LHR
1 stop12h 55mMultiple Airlines
Deal found 25/11£424
gio 27/1108:50LHR - SOU
1 stop6h 45mMultiple Airlines
ven 28/1119:50SOU - LHR
1 stop13h 20mMultiple Airlines
Deal found 25/11£449
gio 11/1206:35LHR - SOU
2 stops7h 30mBritish Airways
lun 15/1216:45SOU - LHR
1 stop4h 20mBritish Airways
Deal found 26/11£482

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 27 novembre 2025.

Round-trip from

£242

One-way from

£128
Aer Lingus
  • Aer Lingus
  • 23/1-25/1
  • 2 total stops
  • 10h 45m total
  • London to Southampton
Search Deals
British Airways
  • British Airways
  • 10/1
  • 1 total stop
  • 9h 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 27 novembre 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

ven 23/1

09:50-15:35

1 stop5h 45m

Southampton Eastleigh

dom 25/1

16:05-21:05

1 stop5h 00m

£242

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

gio 8/1

20:25-07:40

1 stop11h 15m

Southampton Eastleigh

lun 12/1

14:35-19:15

1 stop4h 40m

£245

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

ven 27/3

07:10-17:30

1 stop10h 20m

Southampton Eastleigh

mar 31/3

12:35-22:35

1 stop10h 00m

£293

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

mer 10/12

07:50-15:35

1 stop7h 45m

Southampton Eastleigh

dom 14/12

15:25-21:25

1 stop6h 00m

£294

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

ven 26/12

14:15-19:40

1 stop5h 25m

Southampton Eastleigh

ven 2/1

20:10-08:05

1 stop11h 55m

£297

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

gio 11/12

15:10-19:40

1 stop4h 30m

Southampton Eastleigh

lun 15/12

16:05-21:05

1 stop5h 00m

£298

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

mer 24/12

07:00-10:55

1 stop3h 55m

Southampton Eastleigh

mer 31/12

08:35-20:30

1 stop11h 55m

£320

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

ven 2/1

07:10-19:20

1 stop12h 10m

Southampton Eastleigh

dom 4/1

17:40-08:20

1 stop14h 40m

£332

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

mar 23/12

19:50-10:55

1 stop15h 05m

Southampton Eastleigh

mar 30/12

14:45-20:25

1 stop5h 40m

£332

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

sab 10/1

06:55-16:40

1 stop9h 45m

£128

Flights are sorted by cheapest return flights first.

Deals found on 26/11

Showing 1-10 of 13 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 27 novembre 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 5h 45m. Your travel time can differ by up to 4h 35m. 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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How does Cheapflights help users find flights from Heathrow to Southampton?

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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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