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Cheap flights from London Heathrow Airport to London from £170

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to London departing on 1/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from London Heathrow Airport to London

Cheap return flights

KLM Logo
08:40 - 17:00LHR-SOU
8h 20m1 stop
KLM Logo
09:20 - 19:30SOU-LHR
10h 10m1 stop
£258KLM
Find Deal
Fri, 19 Sep - Sun, 28 Sep
KLM Logo
08:40 - 17:00LHR-SOU
8h 20m1 stop
KLM Logo
09:20 - 19:25SOU-LHR
10h 05m1 stop
£287KLM
Find Deal
Fri, 19 Sep - Thu, 25 Sep
KLM Logo
08:40 - 17:00LHR-SOU
8h 20m1 stop
KLM Logo
09:20 - 16:15SOU-LHR
6h 55m1 stop
£288KLM
Find Deal
Fri, 19 Sep - Thu, 25 Sep
KLM Logo
08:40 - 17:00LHR-SOU
8h 20m1 stop
KLM Logo
09:20 - 16:15SOU-LHR
6h 55m1 stop
£289KLM
Find Deal
Fri, 19 Sep - Thu, 25 Sep
KLM Logo
08:40 - 17:00LHR-SOU
8h 20m1 stop
KLM Logo
09:20 - 17:35SOU-LHR
8h 15m1 stop
£290KLM
Find Deal
Fri, 19 Sep - Thu, 25 Sep
Logo
15:50 - 08:45LHR-SOU
16h 55m2 stops
Logo
09:40 - 20:20SOU-LHR
10h 40m1 stop
£339
Find Deal
Fri, 19 Sep - Thu, 25 Sep
British Airways Logo
07:20 - 19:10LHR-SOU
11h 50m1 stop
British Airways Logo
08:55 - 21:25SOU-LHR
12h 30m1 stop
£385British Airways
Find Deal
Fri, 19 Sep - Sun, 28 Sep
Logo
21:10 - 08:40LHR-SOU
11h 30m1 stop
Logo
08:00 - 15:55SOU-LHR
7h 55m2 stops
£401
Find Deal
Fri, 19 Sep - Thu, 25 Sep
Aer Lingus Logo
09:50 - 16:35LHR-SOU
6h 45m1 stop
Aer Lingus Logo
09:40 - 15:55SOU-LHR
6h 15m1 stop
£412Aer Lingus
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Thu, 28 Aug - Thu, 4 Sep
Logo
07:40 - 16:35LHR-SOU
8h 55m1 stop
Logo
15:45 - 20:45SOU-LHR
5h 00m1 stop
£429
Find Deal
Thu, 28 Aug - Thu, 4 Sep

KLM flights from London Heathrow Airport to Southampton

Our best KLM deals on London Heathrow Airport to Southampton flight tickets
KLM
19 Sept
LHR08:40London Heathrow
8h 20m
1 stop
SOU17:00Southampton Eastleigh
28 Sept
SOU09:20Southampton Eastleigh
10h 10m
1 stop
LHR19:30London Heathrow
£258
Find similar
KLM
19 Sept
LHR08:40London Heathrow
8h 20m
1 stop
SOU17:00Southampton Eastleigh
25 Sept
SOU09:20Southampton Eastleigh
10h 05m
1 stop
LHR19:25London Heathrow
£287
Find similar
KLM
19 Sept
LHR08:40London Heathrow
8h 20m
1 stop
SOU17:00Southampton Eastleigh
25 Sept
SOU09:20Southampton Eastleigh
6h 55m
1 stop
LHR16:15London Heathrow
£288
Find similar

British Airways flights from London Heathrow Airport to Southampton

Our best British Airways deals on London Heathrow Airport to Southampton flight tickets
British Airways
19 Sept
LHR07:20London Heathrow
11h 50m
1 stop
SOU19:10Southampton Eastleigh
28 Sept
SOU08:55Southampton Eastleigh
12h 30m
1 stop
LHR21:25London Heathrow
£385
Find similar
British Airways
7 Aug
LHR11:45London Heathrow
4h 15m
1 stop
SOU16:00Southampton Eastleigh
11 Aug
SOU13:10Southampton Eastleigh
3h 35m
1 stop
LHR16:45London Heathrow
£761
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Southampton 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 1 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 19/9

08:40-17:00

1 stop8h 20m

Southampton Eastleigh

Sun 28/9

09:20-19:30

1 stop10h 10m

£258

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 19/9

08:40-17:00

1 stop8h 20m

Southampton Eastleigh

Thu 25/9

09:20-19:25

1 stop10h 05m

£287

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 19/9

08:40-17:00

1 stop8h 20m

Southampton Eastleigh

Thu 25/9

09:20-16:15

1 stop6h 55m

£288

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 19/9

08:40-17:00

1 stop8h 20m

Southampton Eastleigh

Thu 25/9

09:20-16:15

1 stop6h 55m

£289

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 19/9

08:40-17:00

1 stop8h 20m

Southampton Eastleigh

Thu 25/9

09:20-17:35

1 stop8h 15m

£290

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 19/9

15:50-08:45

2 stops16h 55m

Southampton Eastleigh

Thu 25/9

09:40-20:20

1 stop10h 40m

£339

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 19/9

07:20-19:10

1 stop11h 50m

Southampton Eastleigh

Sun 28/9

08:55-21:25

1 stop12h 30m

£385

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 19/9

21:10-08:40

1 stop11h 30m

Southampton Eastleigh

Thu 25/9

08:00-15:55

2 stops7h 55m

£401

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 28/8

09:50-16:35

1 stop6h 45m

Southampton Eastleigh

Thu 4/9

09:40-15:55

1 stop6h 15m

£412

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 28/8

07:40-16:35

1 stop8h 55m

Southampton Eastleigh

Thu 4/9

15:45-20:45

1 stop5h 00m

£429

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to London from

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

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 Southampton?

Our data shows that Thursday is the least expensive day to fly to Southampton. Tickets to fly out on this day can be as low as £217. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around £362. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southampton.

What is the cheapest time of day to depart on your flight to Southampton?

According to our data, the cheapest time of day to fly to Southampton is at midday. momondo users have found flights departing from London Heathrow Airport to Southampton at midday for as low as £222. 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 £295 on average. Flights to Southampton from London Heathrow Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

When to book flights from London Heathrow Airport to Southampton

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

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

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

Best price found

£170

Fastest flight time

6h 45m

Direct flights

None

Airports in Southampton

1 airport
The best one-way flight to Southampton from London Heathrow Airport in the past 72 hours is £170. The best return flight deal from London Heathrow Airport to Southampton found on momondo in the last 72 hours is £258.
The fastest flight from London Heathrow Airport to Southampton takes 6h 45m
There are no direct flights from London Heathrow Airport to Southampton. Popular non-direct route for this connection is London Heathrow Airport - Southampton Eastleigh Airport.
There is 1 airport near Southampton: Southampton Eastleigh (SOU)
Search flight deals

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

    London Heathrow and Southampton Eastleigh are 56.4 mi apart from one another. Flights usually cover this in 6h 45m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London Heathrow Airport to Southampton Eastleigh Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Southampton . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Southampton from London with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Southampton from London.

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

If you are simply researching potential flights to Southampton, momondo offers a useful price alert feature which will track prices for flights to Southampton from London and alert you when they change.

An easier way to manage your Southampton trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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