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Cheap flights from Southampton to London from £94

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 15/7. 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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0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
17:40 - 07:40
SOU
-
LHR
14h 00m
1 stop
KLM Logo
17:05 - 08:20
LHR
-
SOU
15h 15m
1 stop
£259KLM
Mon, 2 Mar - Mon, 9 Mar
Multiple Airlines Logo
14:15 - 18:40
SOU
-
LHR
4h 25m
1 stop
Multiple Airlines Logo
07:00 - 13:35
LHR
-
SOU
6h 35m
1 stop
£279Multiple Airlines
Thu, 19 Mar - Thu, 26 Mar
British Airways Logo
12:00 - 19:30
SOU
-
LHR
7h 30m
1 stop
British Airways Logo
07:55 - 17:30
LHR
-
SOU
9h 35m
1 stop
£294British Airways
Wed, 11 Mar - Thu, 12 Mar
Aer Lingus Logo
20:10 - 09:05
SOU
-
LHR
12h 55m
1 stop
Aer Lingus Logo
15:10 - 19:40
LHR
-
SOU
4h 30m
1 stop
£298Aer Lingus
Fri, 20 Mar - Fri, 27 Mar
KLM Logo
17:35 - 20:50
SOU
-
LHR
3h 15m
1 stop
KLM Logo
20:25 - 08:20
LHR
-
SOU
11h 55m
1 stop
£315KLM
Wed, 18 Feb - Sun, 22 Feb
KLM Logo
17:35 - 07:40
SOU
-
LHR
14h 05m
1 stop
KLM Logo
11:15 - 08:50
LHR
-
SOU
21h 35m
1 stop
£330KLM
Tue, 17 Feb - Sat, 21 Feb
British Airways Logo
08:55 - 12:55
SOU
-
LHR
4h 00m
1 stop
British Airways Logo
12:55 - 17:30
LHR
-
SOU
4h 35m
1 stop
£336British Airways
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
08:45 - 18:15
SOU
-
LHR
9h 30m
1 stop
Multiple Airlines Logo
08:45 - 18:40
LHR
-
SOU
9h 55m
1 stop
£337Multiple Airlines
Mon, 1 Jun - Sun, 7 Jun
Multiple Airlines Logo
12:25 - 21:05
SOU
-
LHR
8h 40m
1 stop
Multiple Airlines Logo
08:50 - 08:50
LHR
-
SOU
24h 00m
2 stops
£349Multiple Airlines
Tue, 17 Feb - Sat, 21 Feb
Aer Lingus Logo
12:25 - 21:05
SOU
-
LHR
8h 40m
1 stop
Aer Lingus Logo
08:50 - 15:35
LHR
-
SOU
6h 45m
1 stop
£384Aer Lingus
Tue, 3 Mar - Tue, 10 Mar

KLM flights from Southampton to London Heathrow Airport

Our best KLM deals on Southampton to London Heathrow Airport flight tickets
KLM
2 Mar
SOU17:40Southampton Eastleigh
14h 00m
1 stop
LHR07:40London Heathrow
9 Mar
LHR17:05London Heathrow
15h 15m
1 stop
SOU08:20Southampton Eastleigh
£259
KLM
18 Feb
SOU17:35Southampton Eastleigh
3h 15m
1 stop
LHR20:50London Heathrow
22 Feb
LHR20:25London Heathrow
11h 55m
1 stop
SOU08:20Southampton Eastleigh
£315
KLM
17 Feb
SOU17:35Southampton Eastleigh
14h 05m
1 stop
LHR07:40London Heathrow
21 Feb
LHR11:15London Heathrow
21h 35m
1 stop
SOU08:50Southampton Eastleigh
£330

British Airways flights from Southampton to London Heathrow Airport

Our best British Airways deals on Southampton to London Heathrow Airport flight tickets
British Airways
11 Mar
SOU12:00Southampton Eastleigh
7h 30m
1 stop
LHR19:30London Heathrow
12 Mar
LHR07:55London Heathrow
9h 35m
1 stop
SOU17:30Southampton Eastleigh
£294
British Airways
4 Mar
SOU08:55Southampton Eastleigh
4h 00m
1 stop
LHR12:55London Heathrow
11 Mar
LHR12:55London Heathrow
4h 35m
1 stop
SOU17:30Southampton Eastleigh
£336

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 4 February 2026.
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

Mon 2/3

17:40-07:40

1 stop14h 00m

London Heathrow

Mon 9/3

17:05-08:20

1 stop15h 15m

£259

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 19/3

14:15-18:40

1 stop4h 25m

London Heathrow

Thu 26/3

07:00-13:35

1 stop6h 35m

£279

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 11/3

12:00-19:30

1 stop7h 30m

London Heathrow

Thu 12/3

07:55-17:30

1 stop9h 35m

£294

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 20/3

20:10-09:05

1 stop12h 55m

London Heathrow

Fri 27/3

15:10-19:40

1 stop4h 30m

£298

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 18/2

17:35-20:50

1 stop3h 15m

London Heathrow

Sun 22/2

20:25-08:20

1 stop11h 55m

£315

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 17/2

17:35-07:40

1 stop14h 05m

London Heathrow

Sat 21/2

11:15-08:50

1 stop21h 35m

£330

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 4/3

08:55-12:55

1 stop4h 00m

London Heathrow

Wed 11/3

12:55-17:30

1 stop4h 35m

£336

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mon 1/6

08:45-18:15

1 stop9h 30m

London Heathrow

Sun 7/6

08:45-18:40

1 stop9h 55m

£337

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 17/2

12:25-21:05

1 stop8h 40m

London Heathrow

Sat 21/2

08:50-08:50

2 stops24h 00m

£349

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 3/3

12:25-21:05

1 stop8h 40m

London Heathrow

Tue 10/3

08:50-15:35

1 stop6h 45m

£384

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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 £813. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £1,164.

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 afternoon. momondo users have found flights departing from Southampton to London Heathrow Airport in the afternoon for as low as £856. 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 £1,035 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

Fastest flight time

3h 15m

Direct flights

None
The fastest flight from Southampton to London Heathrow Airport takes 3h 15m
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 15m, 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
Stratford-upon-Avon
Swindon
Southend-on-Sea
Canterbury
Ipswich
Ilford
Poole
Guildford
Chelmsford
Hayes
Dover
Swanage
Folkestone

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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