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Cheap flights from Southampton to London from £108

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 4/6. 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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Find the cheapest flights from Southampton to London

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
09:20 - 13:55
SOU
-
LHR
4h 35m
1 stop
Aer Lingus Logo
15:10 - 19:30
LHR
-
SOU
4h 20m
1 stop
£228Aer Lingus
Tue, 9 Jun - Tue, 16 Jun
KLM Logo
17:20 - 20:55
SOU
-
LHR
3h 35m
1 stop
KLM Logo
20:55 - 08:45
LHR
-
SOU
11h 50m
1 stop
£246KLM
Fri, 5 Jun - Fri, 12 Jun
KLM Logo
17:20 - 20:55
SOU
-
LHR
3h 35m
1 stop
KLM Logo
20:55 - 08:35
LHR
-
SOU
11h 40m
1 stop
£247KLM
Fri, 5 Jun - Thu, 11 Jun
KLM Logo
17:20 - 10:45
SOU
-
LHR
17h 25m
1 stop
KLM Logo
20:55 - 08:35
LHR
-
SOU
11h 40m
1 stop
£252KLM
Mon, 8 Jun - Mon, 15 Jun
KLM Logo
09:05 - 17:35
SOU
-
LHR
8h 30m
1 stop
KLM Logo
20:55 - 08:35
LHR
-
SOU
11h 40m
1 stop
£272KLM
Fri, 5 Jun - Thu, 11 Jun
Aer Lingus Logo
09:20 - 19:25
SOU
-
LHR
10h 05m
1 stop
Aer Lingus Logo
14:20 - 19:30
LHR
-
SOU
5h 10m
1 stop
£274Aer Lingus
Thu, 4 Jun - Wed, 10 Jun
KLM Logo
09:05 - 13:50
SOU
-
LHR
4h 45m
1 stop
KLM Logo
19:15 - 08:35
LHR
-
SOU
13h 20m
1 stop
£285KLM
Thu, 4 Jun - Wed, 10 Jun
KLM Logo
17:20 - 20:55
SOU
-
LHR
3h 35m
1 stop
KLM Logo
19:15 - 08:35
LHR
-
SOU
13h 20m
1 stop
£286KLM
Thu, 4 Jun - Wed, 10 Jun
KLM Logo
17:20 - 20:55
SOU
-
LHR
3h 35m
1 stop
KLM Logo
20:55 - 08:35
LHR
-
SOU
11h 40m
1 stop
£289KLM
Thu, 4 Jun - Wed, 10 Jun
Aer Lingus Logo
20:00 - 08:05
SOU
-
LHR
12h 05m
1 stop
Aer Lingus Logo
21:10 - 08:40
LHR
-
SOU
11h 30m
1 stop
£291Aer Lingus
Thu, 4 Jun - Wed, 10 Jun

KLM flights from Southampton to London Heathrow Airport

Our best KLM deals on Southampton to London Heathrow Airport flight tickets
KLM
5 Jun
SOU17:20Southampton Eastleigh
3h 35m
1 stop
LHR20:55London Heathrow
12 Jun
LHR20:55London Heathrow
11h 50m
1 stop
SOU08:45Southampton Eastleigh
£246
KLM
5 Jun
SOU17:20Southampton Eastleigh
3h 35m
1 stop
LHR20:55London Heathrow
11 Jun
LHR20:55London Heathrow
11h 40m
1 stop
SOU08:35Southampton Eastleigh
£247
KLM
8 Jun
SOU17:20Southampton Eastleigh
17h 25m
1 stop
LHR10:45London Heathrow
15 Jun
LHR20:55London Heathrow
11h 40m
1 stop
SOU08:35Southampton Eastleigh
£252

British Airways flights from Southampton to London Heathrow Airport

Our best British Airways deals on Southampton to London Heathrow Airport flight tickets
British Airways
8 Jun
SOU12:20Southampton Eastleigh
5h 40m
1 stop
LHR18:00London Heathrow
15 Jun
LHR06:45London Heathrow
14h 00m
1 stop
SOU20:45Southampton Eastleigh
£416
British Airways
5 Jun
SOU06:45Southampton Eastleigh
5h 00m
1 stop
LHR11:45London Heathrow
8 Jun
LHR15:00London Heathrow
5h 45m
1 stop
SOU20:45Southampton Eastleigh
£421
British Airways
8 Aug
SOU16:45Southampton Eastleigh
3h 35m
1 stop
LHR20:20London Heathrow
17 Aug
LHR14:15London Heathrow
6h 40m
1 stop
SOU20:55Southampton Eastleigh
£434

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 13 May 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

Cheapest return flight
Fastest return journey

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 9/6

09:20-13:55

1 stop4h 35m

London Heathrow

Tue 16/6

15:10-19:30

1 stop4h 20m

£228

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 5/6

17:20-20:55

1 stop3h 35m

London Heathrow

Fri 12/6

20:55-08:45

1 stop11h 50m

£246

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 5/6

17:20-20:55

1 stop3h 35m

London Heathrow

Thu 11/6

20:55-08:35

1 stop11h 40m

£247

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mon 8/6

17:20-10:45

1 stop17h 25m

London Heathrow

Mon 15/6

20:55-08:35

1 stop11h 40m

£252

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 5/6

09:05-17:35

1 stop8h 30m

London Heathrow

Thu 11/6

20:55-08:35

1 stop11h 40m

£272

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 4/6

09:20-19:25

1 stop10h 05m

London Heathrow

Wed 10/6

14:20-19:30

1 stop5h 10m

£274

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 4/6

09:05-13:50

1 stop4h 45m

London Heathrow

Wed 10/6

19:15-08:35

1 stop13h 20m

£285

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 4/6

17:20-20:55

1 stop3h 35m

London Heathrow

Wed 10/6

19:15-08:35

1 stop13h 20m

£286

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 4/6

17:20-20:55

1 stop3h 35m

London Heathrow

Wed 10/6

20:55-08:35

1 stop11h 40m

£289

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 4/6

20:00-08:05

1 stop12h 05m

London Heathrow

Wed 10/6

21:10-08:40

1 stop11h 30m

£291

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 £774. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £1,356.

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 £884. 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 £1,056 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

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 35m

Direct flights

None
The fastest flight from Southampton to London Heathrow Airport takes 3h 35m
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

Frequently asked questions about flying from Southampton to London Heathrow Airport

  • 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 35m, 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
Stratford-upon-Avon
Wembley
Slough
Maidstone
Northampton
Swindon
Ipswich
Southend-on-Sea
Canterbury
Ilford
Hayes
Guildford
Poole
Folkestone
Chelmsford
Dover

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.

An easier way to manage your London Heathrow Airport trip

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