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Cheap flights from London Heathrow Airport to London from £74

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to London departing on 23/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from London Heathrow Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
14:20 - 19:30
LHR
-
SOU
5h 10m
1 stop
Aer Lingus Logo
09:20 - 15:00
SOU
-
LHR
5h 40m
1 stop
£224Aer Lingus
Wed, 22 Apr - Wed, 29 Apr
Aer Lingus Logo
15:10 - 19:30
LHR
-
SOU
4h 20m
1 stop
Aer Lingus Logo
20:00 - 08:05
SOU
-
LHR
12h 05m
1 stop
£240Aer Lingus
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
06:55 - 20:45
LHR
-
SOU
13h 50m
1 stop
Multiple Airlines Logo
06:50 - 15:00
SOU
-
LHR
8h 10m
1 stop
£247Multiple Airlines
Wed, 8 Apr - Wed, 15 Apr
Multiple Airlines Logo
07:20 - 12:05
LHR
-
SOU
4h 45m
1 stop
Multiple Airlines Logo
08:55 - 20:50
SOU
-
LHR
11h 55m
1 stop
£249Multiple Airlines
Mon, 13 Apr - Mon, 20 Apr
KLM Logo
19:15 - 08:35
LHR
-
SOU
13h 20m
1 stop
KLM Logo
17:20 - 20:55
SOU
-
LHR
3h 35m
1 stop
£258KLM
Tue, 7 Apr - Tue, 14 Apr
Multiple Airlines Logo
06:55 - 12:55
LHR
-
SOU
6h 00m
1 stop
Multiple Airlines Logo
06:50 - 17:10
SOU
-
LHR
10h 20m
1 stop
£260Multiple Airlines
Wed, 8 Apr - Wed, 15 Apr
Aer Lingus Logo
21:10 - 08:40
LHR
-
SOU
11h 30m
1 stop
Aer Lingus Logo
09:20 - 15:00
SOU
-
LHR
5h 40m
1 stop
£268Aer Lingus
Mon, 20 Apr - Mon, 27 Apr
Aer Lingus Logo
15:10 - 19:30
LHR
-
SOU
4h 20m
1 stop
Aer Lingus Logo
20:00 - 08:05
SOU
-
LHR
12h 05m
1 stop
£279Aer Lingus
Sat, 25 Apr - Sat, 2 May
Multiple Airlines Logo
07:00 - 11:45
LHR
-
SOU
4h 45m
1 stop
Multiple Airlines Logo
12:35 - 21:25
SOU
-
LHR
8h 50m
1 stop
£281Multiple Airlines
Wed, 25 Mar - Sun, 29 Mar
British Airways Logo
06:55 - 12:55
LHR
-
SOU
6h 00m
1 stop
British Airways Logo
06:50 - 11:45
SOU
-
LHR
4h 55m
1 stop
£285British Airways
Wed, 1 Apr - Fri, 10 Apr

Aer Lingus flights from London Heathrow Airport to Southampton

Our best Aer Lingus deals on London Heathrow Airport to Southampton flight tickets
Aer Lingus
22 Apr
LHR14:20London Heathrow
5h 10m
1 stop
SOU19:30Southampton Eastleigh
29 Apr
SOU09:20Southampton Eastleigh
5h 40m
1 stop
LHR15:00London Heathrow
£224
Aer Lingus
21 Apr
LHR15:10London Heathrow
4h 20m
1 stop
SOU19:30Southampton Eastleigh
28 Apr
SOU20:00Southampton Eastleigh
12h 05m
1 stop
LHR08:05London Heathrow
£240
Aer Lingus
25 Apr
LHR15:10London Heathrow
4h 20m
1 stop
SOU19:30Southampton Eastleigh
2 May
SOU20:00Southampton Eastleigh
12h 05m
1 stop
LHR08:05London Heathrow
£279

British Airways flights from London Heathrow Airport to Southampton

Our best British Airways deals on London Heathrow Airport to Southampton flight tickets
British Airways
1 Apr
LHR06:55London Heathrow
6h 00m
1 stop
SOU12:55Southampton Eastleigh
10 Apr
SOU06:50Southampton Eastleigh
4h 55m
1 stop
LHR11:45London Heathrow
£285
British Airways
8 Apr
LHR06:55London Heathrow
6h 00m
1 stop
SOU12:55Southampton Eastleigh
15 Apr
SOU12:35Southampton Eastleigh
4h 35m
1 stop
LHR17:10London Heathrow
£295
British Airways
21 Apr
LHR06:45London Heathrow
14h 00m
1 stop
SOU20:45Southampton Eastleigh
22 Apr
SOU06:50Southampton Eastleigh
10h 20m
1 stop
LHR17:10London Heathrow
£298

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 12 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
Fastest return journey

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 22/4

14:20-19:30

1 stop5h 10m

Southampton Eastleigh

Wed 29/4

09:20-15:00

1 stop5h 40m

£224

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Tue 21/4

15:10-19:30

1 stop4h 20m

Southampton Eastleigh

Tue 28/4

20:00-08:05

1 stop12h 05m

£240

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

£247

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 13/4

07:20-12:05

1 stop4h 45m

Southampton Eastleigh

Mon 20/4

08:55-20:50

1 stop11h 55m

£249

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

£258

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 8/4

06:55-12:55

1 stop6h 00m

Southampton Eastleigh

Wed 15/4

06:50-17:10

1 stop10h 20m

£260

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 20/4

21:10-08:40

1 stop11h 30m

Southampton Eastleigh

Mon 27/4

09:20-15:00

1 stop5h 40m

£268

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

£279

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 25/3

07:00-11:45

1 stop4h 45m

Southampton Eastleigh

Sun 29/3

12:35-21:25

1 stop8h 50m

£281

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 1/4

06:55-12:55

1 stop6h 00m

Southampton Eastleigh

Fri 10/4

06:50-11:45

1 stop4h 55m

£285

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from London Heathrow Airport to Southampton

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Southampton according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Southampton (LHR to SOU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Southampton

Fastest flight time

4h 20m

Direct flights

None
The fastest flight from London Heathrow Airport to Southampton takes 4h 20m
There are no direct flights from London Heathrow Airport to Southampton. There are no popular flight routes from London Heathrow Airport to Southampton.
Search flight deals

  • How far is London Heathrow to Southampton Eastleigh by plane?

    London Heathrow and Southampton Eastleigh are 56.4 mi apart from one another. Flights usually cover this in 4h 20m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Heathrow Airport to Southampton Eastleigh Airport?

    Prices for flights from London Heathrow Airport to Southampton Eastleigh Airport are refreshed on a daily basis.

  • How old do you have to be to fly from London Heathrow Airport to Southampton Eastleigh Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The travel and health documents required for your trip to Southampton Eastleigh Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Southampton Eastleigh Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from London Heathrow Airport to Southampton?

    Search flight deals from London Heathrow Airport to Southampton. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from London Heathrow Airport to Southampton with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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Why use momondo?

Why should I use momondo to find a flight deal from London to Southampton?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Southampton . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Southampton with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Southampton from London with this policy.

How can momondo help me find flights from London to Southampton?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Southampton from London.

I’m not ready to book a flight from London to Southampton right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Southampton, momondo offers a useful price alert feature which will track prices for flights to Southampton from London and alert you when they change.

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