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Cheap flights from Southampton to London from £77

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Southampton to London departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
17:30 - 07:40SOU-LHR
14h 10m1 stop
KLM Logo
15:45 - 08:20LHR-SOU
16h 35m1 stop
£246KLM
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Wed, 26 Nov - Wed, 3 Dec
British Airways Logo
12:35 - 17:55SOU-LHR
5h 20m1 stop
British Airways Logo
10:35 - 20:45LHR-SOU
10h 10m1 stop
£294British Airways
Find Deal
Mon, 30 Mar - Tue, 31 Mar
British Airways Logo
12:35 - 20:45SOU-LHR
8h 10m1 stop
British Airways Logo
14:05 - 20:45LHR-SOU
6h 40m1 stop
£297British Airways
Find Deal
Mon, 30 Mar - Tue, 31 Mar
KLM Logo
17:30 - 07:40SOU-LHR
14h 10m1 stop
KLM Logo
20:25 - 08:10LHR-SOU
11h 45m1 stop
£298KLM
Find Deal
Fri, 14 Nov - Tue, 18 Nov
Aer Lingus Logo
09:30 - 21:05SOU-LHR
11h 35m1 stop
Aer Lingus Logo
20:45 - 08:45LHR-SOU
12h 00m1 stop
£300Aer Lingus
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Sat, 13 Dec - Sat, 20 Dec
Multiple Airlines Logo
14:25 - 22:25SOU-LHR
8h 00m2 stops
Multiple Airlines Logo
13:25 - 18:30LHR-SOU
5h 05m1 stop
£316Multiple Airlines
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Wed, 26 Nov - Wed, 3 Dec
British Airways Logo
14:45 - 20:25SOU-LHR
5h 40m1 stop
British Airways Logo
12:55 - 17:35LHR-SOU
4h 40m1 stop
£357British Airways
Find Deal
Tue, 23 Dec - Mon, 29 Dec
British Airways Logo
14:45 - 20:25SOU-LHR
5h 40m1 stop
British Airways Logo
12:55 - 17:35LHR-SOU
4h 40m1 stop
£359British Airways
Find Deal
Tue, 23 Dec - Mon, 29 Dec
British Airways Logo
09:30 - 13:55SOU-LHR
4h 25m1 stop
British Airways Logo
12:55 - 17:20LHR-SOU
4h 25m1 stop
£373British Airways
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Sat, 20 Dec - Mon, 5 Jan
Multiple Airlines Logo
13:30 - 20:55SOU-LHR
7h 25m1 stop
Multiple Airlines Logo
08:05 - 14:05LHR-SOU
6h 00m2 stops
£457Multiple Airlines
Find Deal
Fri, 14 Nov - Tue, 18 Nov

British Airways flights from Southampton to London Heathrow Airport

Our best British Airways deals on Southampton to London Heathrow Airport flight tickets
British Airways
30 Mar
SOU12:35Southampton Eastleigh
5h 20m
1 stop
LHR17:55London Heathrow
31 Mar
LHR10:35London Heathrow
10h 10m
1 stop
SOU20:45Southampton Eastleigh
£294
Find similar
British Airways
30 Mar
SOU12:35Southampton Eastleigh
8h 10m
1 stop
LHR20:45London Heathrow
31 Mar
LHR14:05London Heathrow
6h 40m
1 stop
SOU20:45Southampton Eastleigh
£297
Find similar
British Airways
23 Dec
SOU14:45Southampton Eastleigh
5h 40m
1 stop
LHR20:25London Heathrow
29 Dec
LHR12:55London Heathrow
4h 40m
1 stop
SOU17:35Southampton Eastleigh
£357
Find similar

KLM flights from Southampton to London Heathrow Airport

Our best KLM deals on Southampton to London Heathrow Airport flight tickets
KLM
26 Nov
SOU17:30Southampton Eastleigh
14h 10m
1 stop
LHR07:40London Heathrow
3 Dec
LHR15:45London Heathrow
16h 35m
1 stop
SOU08:20Southampton Eastleigh
£246
Find similar
KLM
14 Nov
SOU17:30Southampton Eastleigh
14h 10m
1 stop
LHR07:40London Heathrow
18 Nov
LHR20:25London Heathrow
11h 45m
1 stop
SOU08:10Southampton Eastleigh
£298
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Southampton to London Heathrow Airport 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 31 October 2025.
Use the filters below to find and compare flights from Southampton to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 26/11

17:30-07:40

1 stop14h 10m

London Heathrow

Wed 3/12

15:45-08:20

1 stop16h 35m

£246

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mon 30/3

12:35-17:55

1 stop5h 20m

London Heathrow

Tue 31/3

10:35-20:45

1 stop10h 10m

£294

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mon 30/3

12:35-20:45

1 stop8h 10m

London Heathrow

Tue 31/3

14:05-20:45

1 stop6h 40m

£297

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 14/11

17:30-07:40

1 stop14h 10m

London Heathrow

Tue 18/11

20:25-08:10

1 stop11h 45m

£298

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 13/12

09:30-21:05

1 stop11h 35m

London Heathrow

Sat 20/12

20:45-08:45

1 stop12h 00m

£300

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 26/11

14:25-22:25

2 stops8h 00m

London Heathrow

Wed 3/12

13:25-18:30

1 stop5h 05m

£316

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 23/12

14:45-20:25

1 stop5h 40m

London Heathrow

Mon 29/12

12:55-17:35

1 stop4h 40m

£357

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 23/12

14:45-20:25

1 stop5h 40m

London Heathrow

Mon 29/12

12:55-17:35

1 stop4h 40m

£359

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 20/12

09:30-13:55

1 stop4h 25m

London Heathrow

Mon 5/1

12:55-17:20

1 stop4h 25m

£373

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 14/11

13:30-20:55

1 stop7h 25m

London Heathrow

Tue 18/11

08:05-14:05

2 stops6h 00m

£457

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Southampton to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Southampton is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £844. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Thursday is £1,134.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Southampton to London Heathrow Airport in the evening for as low as £850. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £1,058 on average. Flights to London Heathrow Airport from Southampton in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Southampton Eastleigh to London Heathrow flight route?

Fly from Southampton Eastleigh to London Heathrow for the best Southampton Eastleigh - London Heathrow flight prices

What cabin class options are available on Southampton Eastleigh to London Heathrow flights?

There are 2 cabin classes available to choose from on Southampton Eastleigh to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

When to book flights from Southampton to London Heathrow Airport

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

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

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

Direct flights

None
There are no direct flights from Southampton to London Heathrow Airport. There are no popular flight routes from Southampton to London Heathrow Airport.
Search flight deals

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

    The distance between Southampton Eastleigh and London Heathrow is about 56.4 mi. Flights usually cover this in 3h 55m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Southampton Eastleigh Airport to London Heathrow Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Southampton Eastleigh Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow 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 London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Southampton to London Heathrow Airport?

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Northampton
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Poole
Guildford
Swanage
Colchester
Dover
Hayes
Chelmsford

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Southampton to London. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to London from Southampton which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to London from Southampton. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to London from Southampton. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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