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Cheap flights from London Heathrow Airport to Southampton from £75

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 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SOU
12 Apr — 19 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap 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 13 March 2026.

Thu 16/420:50
LHR
-
SOU
1 stop11h 55m
Multiple Airlines
Mon 20/419:20
SOU
-
LHR
1 stop13h 50m
Multiple Airlines
Deal found 13/3£149
Wed 8/406:55
LHR
-
SOU
1 stop13h 50m
Multiple Airlines
Wed 15/406:50
SOU
-
LHR
1 stop8h 10m
Multiple Airlines
Deal found 9/3£250
Tue 7/419:15
LHR
-
SOU
1 stop13h 20m
KLM
Tue 14/417:20
SOU
-
LHR
1 stop3h 35m
KLM
Deal found 10/3£261
Mon 27/409:55
LHR
-
SOU
1 stop8h 55m
Multiple Airlines
Mon 4/519:20
SOU
-
LHR
1 stop13h 50m
Multiple Airlines
Deal found 13/3£264
Fri 10/418:05
LHR
-
SOU
1 stop14h 20m
Multiple Airlines
Fri 17/419:30
SOU
-
LHR
1 stop13h 00m
Multiple Airlines
Deal found 13/3£267
Sat 25/415:10
LHR
-
SOU
1 stop4h 20m
Aer Lingus
Sat 2/520:00
SOU
-
LHR
1 stop12h 05m
Aer Lingus
Deal found 11/3£282
Wed 25/307:00
LHR
-
SOU
1 stop4h 45m
Multiple Airlines
Sun 29/312:35
SOU
-
LHR
1 stop8h 50m
Multiple Airlines
Deal found 10/3£284
Thu 9/420:55
LHR
-
SOU
1 stop11h 40m
KLM
Thu 16/417:20
SOU
-
LHR
1 stop3h 35m
KLM
Deal found 10/3£289
Sun 3/511:55
LHR
-
SOU
1 stop7h 30m
Multiple Airlines
Wed 6/508:00
SOU
-
LHR
1 stop6h 50m
Multiple Airlines
Deal found 9/3£294

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 13 March 2026.

Round-trip from

£149

One-way from

£75
16/4-20/4
  • 16/4-20/4
  • 2 total stops
  • 25h 45m total
  • London to Southampton
Search Deals
23/4
  • 23/4
  • 1 total stop
  • 11h 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 13 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 16/4

20:50-08:45

1 stop11h 55m

Southampton Eastleigh

Mon 20/4

19:20-10:45

2 stops15h 25m

£191

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 8/4

06:55-20:45

1 stop13h 50m

Southampton Eastleigh

Wed 15/4

06:50-15:00

1 stop8h 10m

£250

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Tue 7/4

19:15-08:35

1 stop13h 20m

Southampton Eastleigh

Tue 14/4

17:20-20:55

1 stop3h 35m

£261

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 27/4

09:55-18:50

1 stop8h 55m

Southampton Eastleigh

Mon 4/5

19:20-09:10

1 stop13h 50m

£264

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 25/4

15:10-19:30

1 stop4h 20m

Southampton Eastleigh

Sat 2/5

20:00-08:05

1 stop12h 05m

£282

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Tue 21/4

06:45-20:45

1 stop14h 00m

Southampton Eastleigh

Wed 22/4

12:35-17:10

1 stop4h 35m

£300
Fastest return journey

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 16/4

15:10-19:30

1 stop4h 20m

Southampton Eastleigh

Wed 22/4

09:20-13:55

1 stop4h 35m

£300

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 13/5

06:55-12:55

1 stop6h 00m

Southampton Eastleigh

Fri 11/9

06:50-21:10

1 stop14h 20m

£306
Cheapest one-way

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 23/4

20:50-08:45

1 stop11h 55m

£75

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 18/4

15:00-19:30

1 stop4h 30m

£102

Flights are sorted by cheapest return flights first.

Deals found on 9/3

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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 13 March 2026.

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 can get you from London Heathrow Airport to Southampton in just under 13h 20m. Your travel time can differ by up to . London Heathrow Airport and Southampton are separated by a distance of 53 mi.

  • 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

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

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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