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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 14/10. 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

Multiple Airlines Logo
08:05 - 14:15SOU-LHR
6h 10m1 stop
Multiple Airlines Logo
15:05 - 18:55LHR-SOU
3h 50m1 stop
£175Multiple Airlines
Find Deal
Mo, 29 Sep - Fr, 3 Okt
Aer Lingus Logo
16:05 - 21:05SOU-LHR
5h 00m1 stop
Aer Lingus Logo
08:50 - 15:35LHR-SOU
6h 45m1 stop
£194Aer Lingus
Find Deal
Mi, 29 Okt - Mi, 5 Nov
Multiple Airlines Logo
08:05 - 14:15SOU-LHR
6h 10m1 stop
Multiple Airlines Logo
15:50 - 08:40LHR-SOU
16h 50m1 stop
£211Multiple Airlines
Find Deal
Mo, 29 Sep - Do, 2 Okt
Aer Lingus Logo
09:30 - 15:35SOU-LHR
6h 05m1 stop
Aer Lingus Logo
15:10 - 19:40LHR-SOU
4h 30m1 stop
£213Aer Lingus
Find Deal
Do, 30 Okt - Do, 6 Nov
Multiple Airlines Logo
08:05 - 14:15SOU-LHR
6h 10m1 stop
Multiple Airlines Logo
08:55 - 18:55LHR-SOU
10h 00m2 stops
£227Multiple Airlines
Find Deal
Mo, 29 Sep - Fr, 3 Okt
Multiple Airlines Logo
20:00 - 10:20SOU-LHR
14h 20m1 stop
Multiple Airlines Logo
15:05 - 18:55LHR-SOU
3h 50m1 stop
£230Multiple Airlines
Find Deal
Di, 30 Sep - Fr, 3 Okt
Multiple Airlines Logo
08:05 - 14:15SOU-LHR
6h 10m1 stop
Multiple Airlines Logo
20:50 - 18:55LHR-SOU
22h 05m2 stops
£236Multiple Airlines
Find Deal
Mo, 29 Sep - Do, 2 Okt
KLM Logo
09:20 - 19:25SOU-LHR
10h 05m1 stop
KLM Logo
20:55 - 08:45LHR-SOU
11h 50m1 stop
£299KLM
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Mo, 13 Okt - Mo, 20 Okt
British Airways Logo
14:25 - 21:05SOU-LHR
6h 40m2 stops
British Airways Logo
08:05 - 13:55LHR-SOU
5h 50m2 stops
£335British Airways
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Mi, 29 Okt - Mi, 5 Nov
British Airways Logo
12:20 - 16:05SOU-LHR
3h 45m1 stop
British Airways Logo
07:00 - 11:50LHR-SOU
4h 50m1 stop
£344British Airways
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Mo, 29 Dez - Mo, 2 Feb

Aer Lingus flights from Southampton to London Heathrow Airport

Our best Aer Lingus deals on Southampton to London Heathrow Airport flight tickets
Aer Lingus
29 Oct
SOU16:05Southampton Eastleigh
5h 00m
1 stop
LHR21:05London Heathrow
5 Nov
LHR08:50London Heathrow
6h 45m
1 stop
SOU15:35Southampton Eastleigh
£194
Find similar
Aer Lingus
30 Oct
SOU09:30Southampton Eastleigh
6h 05m
1 stop
LHR15:35London Heathrow
6 Nov
LHR15:10London Heathrow
4h 30m
1 stop
SOU19:40Southampton Eastleigh
£213
Find similar
Aer Lingus
1 Oct
SOU20:00Southampton Eastleigh
12h 00m
1 stop
LHR08:00London Heathrow
5 Oct
LHR22:00London Heathrow
11h 10m
1 stop
SOU09:10Southampton Eastleigh
£241
Find similar

British Airways flights from Southampton to London Heathrow Airport

Our best British Airways deals on Southampton to London Heathrow Airport flight tickets
British Airways
29 Oct
SOU14:25Southampton Eastleigh
6h 40m
2 stops
LHR21:05London Heathrow
5 Nov
LHR08:05London Heathrow
5h 50m
2 stops
SOU13:55Southampton Eastleigh
£335
Find similar
British Airways
29 Dec
SOU12:20Southampton Eastleigh
3h 45m
1 stop
LHR16:05London Heathrow
2 Feb
LHR07:00London Heathrow
4h 50m
1 stop
SOU11:50Southampton Eastleigh
£344
Find similar
British Airways
13 Oct
SOU15:45Southampton Eastleigh
4h 05m
1 stop
LHR19:50London Heathrow
6 Nov
LHR07:45London Heathrow
4h 05m
1 stop
SOU11:50Southampton Eastleigh
£372
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 17 September 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

Mo 29/9

08:05-14:15

1 stop6h 10m

London Heathrow

Fr 3/10

15:05-18:55

1 stop3h 50m

£175

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mi 29/10

16:05-21:05

1 stop5h 00m

London Heathrow

Mi 5/11

08:50-15:35

1 stop6h 45m

£194

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mo 29/9

08:05-14:15

1 stop6h 10m

London Heathrow

Do 2/10

15:50-08:40

1 stop16h 50m

£211

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Do 30/10

09:30-15:35

1 stop6h 05m

London Heathrow

Do 6/11

15:10-19:40

1 stop4h 30m

£213

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mo 29/9

08:05-14:15

1 stop6h 10m

London Heathrow

Fr 3/10

08:55-18:55

2 stops10h 00m

£227

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Di 30/9

20:00-10:20

1 stop14h 20m

London Heathrow

Fr 3/10

15:05-18:55

1 stop3h 50m

£230

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mo 29/9

08:05-14:15

1 stop6h 10m

London Heathrow

Do 2/10

20:50-18:55

2 stops22h 05m

£236

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mo 13/10

09:20-19:25

1 stop10h 05m

London Heathrow

Mo 20/10

20:55-08:45

1 stop11h 50m

£299

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mi 29/10

14:25-21:05

2 stops6h 40m

London Heathrow

Mi 5/11

08:05-13:55

2 stops5h 50m

£335

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mo 29/12

12:20-16:05

1 stop3h 45m

London Heathrow

Mo 2/2

07:00-11:50

1 stop4h 50m

£344

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 £787. 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 £1,049.

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 at midday. momondo users have found flights departing from Southampton to London Heathrow Airport at midday for as low as £760. 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 £980 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 45m, 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
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Northampton
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Guildford
Swanage
Poole
Colchester
Worthing
Salisbury
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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