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Cheap flights from Southampton to London from £117

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 14/4. 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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Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
17:20 - 20:55
SOU
-
LHR
3h 35m
1 stop
KLM Logo
20:55 - 08:35
LHR
-
SOU
11h 40m
1 stop
£248KLM
Thu, 14 May - Wed, 20 May
KLM Logo
17:20 - 20:55
SOU
-
LHR
3h 35m
1 stop
KLM Logo
20:55 - 08:35
LHR
-
SOU
11h 40m
1 stop
£249KLM
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
09:20 - 15:15
SOU
-
LHR
5h 55m
1 stop
Multiple Airlines Logo
08:15 - 19:30
LHR
-
SOU
11h 15m
1 stop
£269Multiple Airlines
Thu, 16 Apr - Sat, 18 Apr
Aer Lingus Logo
09:20 - 17:20
SOU
-
LHR
8h 00m
1 stop
Aer Lingus Logo
14:20 - 19:30
LHR
-
SOU
5h 10m
1 stop
£272Aer Lingus
Thu, 16 Apr - Thu, 23 Apr
Multiple Airlines Logo
08:55 - 19:50
SOU
-
LHR
10h 55m
1 stop
Multiple Airlines Logo
09:05 - 19:00
LHR
-
SOU
9h 55m
1 stop
£293Multiple Airlines
Mon, 11 May - Mon, 1 Jun
Multiple Airlines Logo
06:50 - 11:45
SOU
-
LHR
4h 55m
1 stop
Multiple Airlines Logo
07:35 - 12:05
LHR
-
SOU
4h 30m
1 stop
£294Multiple Airlines
Fri, 24 Apr - Sun, 26 Apr
Multiple Airlines Logo
09:20 - 17:00
SOU
-
LHR
7h 40m
1 stop
Multiple Airlines Logo
13:00 - 19:30
LHR
-
SOU
6h 30m
1 stop
£296Multiple Airlines
Thu, 9 Apr - Sat, 11 Apr
KLM Logo
17:20 - 20:55
SOU
-
LHR
3h 35m
1 stop
KLM Logo
20:55 - 08:35
LHR
-
SOU
11h 40m
1 stop
£300KLM
Fri, 3 Apr - Tue, 7 Apr
Multiple Airlines Logo
09:20 - 21:35
SOU
-
LHR
12h 15m
1 stop
Multiple Airlines Logo
13:00 - 19:30
LHR
-
SOU
6h 30m
1 stop
£304Multiple Airlines
Thu, 9 Apr - Sat, 11 Apr
British Airways Logo
18:20 - 09:10
SOU
-
LHR
14h 50m
1 stop
British Airways Logo
06:45 - 20:45
LHR
-
SOU
14h 00m
1 stop
£311British Airways
Thu, 16 Apr - Mon, 20 Apr

British Airways flights from Southampton to London Heathrow Airport

Our best British Airways deals on Southampton to London Heathrow Airport flight tickets
British Airways
16 Apr
SOU18:20Southampton Eastleigh
14h 50m
1 stop
LHR09:10London Heathrow
20 Apr
LHR06:45London Heathrow
14h 00m
1 stop
SOU20:45Southampton Eastleigh
£311
British Airways
15 May
SOU06:50Southampton Eastleigh
4h 55m
1 stop
LHR11:45London Heathrow
17 May
LHR21:45London Heathrow
10h 40m
1 stop
SOU08:25Southampton Eastleigh
£355
British Airways
24 Jul
SOU06:50Southampton Eastleigh
4h 55m
1 stop
LHR11:45London Heathrow
26 Jul
LHR07:35London Heathrow
6h 40m
1 stop
SOU14:15Southampton Eastleigh
£358

Aer Lingus flights from Southampton to London Heathrow Airport

Our best Aer Lingus deals on Southampton to London Heathrow Airport flight tickets
Aer Lingus
16 Apr
SOU09:20Southampton Eastleigh
8h 00m
1 stop
LHR17:20London Heathrow
23 Apr
LHR14:20London Heathrow
5h 10m
1 stop
SOU19:30Southampton Eastleigh
£272
Aer Lingus
6 Apr
SOU20:00Southampton Eastleigh
12h 05m
1 stop
LHR08:05London Heathrow
10 Apr
LHR21:10London Heathrow
11h 30m
1 stop
SOU08:40Southampton Eastleigh
£362

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 24 March 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

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 14/5

17:20-20:55

1 stop3h 35m

London Heathrow

Wed 20/5

20:55-08:35

1 stop11h 40m

£248

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 7/5

17:20-20:55

1 stop3h 35m

London Heathrow

Thu 14/5

20:55-08:35

1 stop11h 40m

£249

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 16/4

09:20-15:15

1 stop5h 55m

London Heathrow

Sat 18/4

08:15-19:30

1 stop11h 15m

£269

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 16/4

09:20-17:20

1 stop8h 00m

London Heathrow

Thu 23/4

14:20-19:30

1 stop5h 10m

£272

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mon 11/5

08:55-19:50

1 stop10h 55m

London Heathrow

Mon 1/6

09:05-19:00

1 stop9h 55m

£293
Fastest return journey

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 24/4

06:50-11:45

1 stop4h 55m

London Heathrow

Sun 26/4

07:35-12:05

1 stop4h 30m

£294

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 9/4

09:20-17:00

1 stop7h 40m

London Heathrow

Sat 11/4

13:00-19:30

1 stop6h 30m

£296

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 3/4

17:20-20:55

1 stop3h 35m

London Heathrow

Tue 7/4

20:55-08:35

1 stop11h 40m

£300

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 9/4

09:20-21:35

1 stop12h 15m

London Heathrow

Sat 11/4

13:00-19:30

1 stop6h 30m

£304

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 16/4

18:20-09:10

1 stop14h 50m

London Heathrow

Mon 20/4

06:45-20:45

1 stop14h 00m

£311

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 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 £785. 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 £1,191.

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 £917. 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 £1,070 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

4h 55m

Direct flights

None
The fastest flight from Southampton to London Heathrow Airport takes 4h 55m
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 4h 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
Stratford-upon-Avon
Northampton
Swindon
Southend-on-Sea
Ipswich
Wembley
Canterbury
Ilford
Guildford
Poole
Hayes
Chelmsford
Dover
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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