Find flights
When to book
FAQs

Cheap flights from London Heathrow Airport to Southampton from £244

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SOU
7 Dec — 14 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 7 November 2025.

Wed 26/1109:50LHR - SOU
1 stop5h 45mMultiple Airlines
Fri 28/1119:50SOU - LHR
1 stop13h 20mMultiple Airlines
Deal found 6/11£264
Fri 5/1220:25LHR - SOU
1 stop12h 25mKLM
Sun 7/1218:05SOU - LHR
1 stop13h 35mKLM
Deal found 5/11£269
Thu 20/1107:50LHR - SOU
1 stop7h 45mAer Lingus
Mon 24/1116:05SOU - LHR
1 stop5h 00mAer Lingus
Deal found 5/11£275
Fri 5/1206:30LHR - SOU
1 stop10h 30mKLM
Fri 12/1217:30SOU - LHR
1 stop14h 10mKLM
Deal found 7/11£313
Wed 19/1107:50LHR - SOU
1 stop7h 45mAer Lingus
Fri 28/1120:10SOU - LHR
1 stop11h 55mAer Lingus
Deal found 6/11£321
Mon 22/1220:30LHR - SOU
1 stop17h 50mMultiple Airlines
Mon 29/1218:10SOU - LHR
1 stop16h 00mMultiple Airlines
Deal found 7/11£347
Mon 22/1208:40LHR - SOU
1 stop8h 45mKLM
Mon 29/1208:40SOU - LHR
1 stop10h 35mKLM
Deal found 7/11£348
Fri 5/1206:05LHR - SOU
1 stop12h 25mMultiple Airlines
Sun 7/1218:25SOU - LHR
2 stops13h 35mMultiple Airlines
Deal found 5/11£370
Wed 19/1108:05LHR - SOU
2 stops5h 50mMultiple Airlines
Fri 28/1113:30SOU - LHR
1 stop4h 50mMultiple Airlines
Deal found 6/11£439

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 7 November 2025.

Round-trip from

£244
9/2-17/2
  • 9/2-17/2
  • 2 total stops
  • 24h 55m 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 7 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

Mon 9/2

17:10-08:25

1 stop15h 15m

Southampton Eastleigh

Tue 17/2

08:55-18:35

1 stop9h 40m

£244

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 5/12

20:25-08:50

1 stop12h 25m

Southampton Eastleigh

Sun 7/12

18:05-07:40

1 stop13h 35m

£269

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 20/11

07:50-15:35

1 stop7h 45m

Southampton Eastleigh

Mon 24/11

16:05-21:05

1 stop5h 00m

£275

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 27/3

07:10-17:20

1 stop10h 10m

Southampton Eastleigh

Tue 31/3

12:35-22:35

1 stop10h 00m

£294

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 22/1

13:55-17:20

1 stop3h 25m

Southampton Eastleigh

Sat 31/1

08:55-13:05

1 stop4h 10m

£312

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 5/12

06:30-17:00

1 stop10h 30m

Southampton Eastleigh

Fri 12/12

17:30-07:40

1 stop14h 10m

£313

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 26/11

09:50-15:35

1 stop5h 45m

Southampton Eastleigh

Fri 28/11

08:10-18:00

2 stops9h 50m

£320

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 19/11

07:50-15:35

1 stop7h 45m

Southampton Eastleigh

Fri 28/11

20:10-08:05

1 stop11h 55m

£321

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 22/12

20:30-14:20

1 stop17h 50m

Southampton Eastleigh

Mon 29/12

18:10-10:10

1 stop16h 00m

£347

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 22/12

08:40-17:25

1 stop8h 45m

Southampton Eastleigh

Mon 29/12

08:40-19:15

1 stop10h 35m

£348

Flights are sorted by cheapest return flights first.

Deals found on 5/11

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 7 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?

    KLM, Aer Lingus, and British Airways can get you from London Heathrow Airport to Southampton in just under 7h 45m. Your travel time can differ by up to 4h 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Edinburgh flights
Stansted to Edinburgh flights
Luton to Edinburgh flights
Heathrow to Edinburgh flights
London City to Edinburgh flights
Heathrow to Newcastle upon Tyne flights
Southend to Edinburgh flights
Heathrow to Manchester flights
Gatwick to Manchester flights
Luton to Newcastle upon Tyne flights
Stansted to Newcastle upon Tyne flights
Gatwick to Newcastle upon Tyne flights
London City to Manchester flights
Luton to Manchester flights
Stansted to Manchester flights
Heathrow to Newquay flights
London City to Newcastle upon Tyne flights
Heathrow to Liverpool flights
Heathrow to Gatwick flights
Stansted to Newquay flights
Luton to Newquay flights
Gatwick to Newquay flights
Gatwick to Liverpool flights
Luton to Liverpool flights
Stansted to Liverpool flights
London City to Newquay flights
Southend to Newcastle upon Tyne flights
London City to Liverpool flights
Southend to Manchester flights
Gatwick to Heathrow flights
Heathrow to Birmingham flights
Southend to Liverpool flights
Heathrow to Leeds flights
London City to Birmingham flights
Gatwick to Birmingham flights
London City to Bristol flights
London City to Leeds flights
Luton to Birmingham flights
Gatwick to Leeds flights
Stansted to Leeds flights
Luton to Leeds flights
Stansted to Birmingham flights
Luton to Bristol flights
Gatwick to Southampton flights
Gatwick to Bristol flights
London City to Southampton flights
Heathrow to Bristol flights
Stansted to Bristol flights
Heathrow to Darlington flights
Southend to Leeds flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.