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Cheap flights from London Heathrow Airport to Southampton from £87

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SOU
2 Sep — 9 Sep1
1 adult

Cheap flight deals from Heathrow to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 August 2025.

Round-trip from

£221

One-way from

£87
17/9-19/9
  • 17/9-19/9
  • 2 total stops
  • 30h 40m total
  • London to Southampton
Search Deals
3/10
  • 3/10
  • 1 total stop
  • 3h 50m total
  • London to Southampton
Search Deals

Find flight deals from Heathrow to Southampton

Cheapest flights from Heathrow to Southampton
Explore the most affordable flight options available from Heathrow to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 August 2025.

Wed 17/907:40LHR - SOU
1 stop11h 50mMultiple Airlines
Fri 19/919:25SOU - LHR
1 stop18h 50mMultiple Airlines
Deal found 26/8£221
Wed 24/909:15LHR - SOU
1 stop6h 00mMultiple Airlines
Wed 1/1008:55SOU - LHR
1 stop6h 15mMultiple Airlines
Deal found 27/8£230
Fri 5/915:05LHR - SOU
1 stop3h 50mMultiple Airlines
Fri 12/919:25SOU - LHR
1 stop18h 50mMultiple Airlines
Deal found 27/8£235
Fri 26/920:55LHR - SOU
1 stop11h 50mKLM
Fri 3/1017:35SOU - LHR
1 stop14h 05mKLM
Deal found 27/8£241
Sat 11/1011:45LHR - SOU
1 stop5h 45mKLM
Sun 12/1009:20SOU - LHR
1 stop8h 30mKLM
Deal found 27/8£244
Thu 11/915:10LHR - SOU
1 stop4h 20mMultiple Airlines
Mon 15/908:05SOU - LHR
1 stop6h 10mMultiple Airlines
Deal found 27/8£278
Mon 3/1108:55LHR - SOU
1 stop3h 40mBritish Airways
Wed 3/1208:55SOU - LHR
1 stop5h 00mBritish Airways
Deal found 26/8£320

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 28 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Southampton that are best for you.

Fly from

Heathrow

Fly to

Southampton

Route

Depart

Return

Price

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 17/9

07:40-19:30

1 stop11h 50m

Southampton Eastleigh

Fri 19/9

19:25-14:15

1 stop18h 50m

£221

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 24/9

09:15-15:15

1 stop6h 00m

Southampton Eastleigh

Wed 1/10

08:55-15:10

1 stop6h 15m

£230

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Tue 23/9

19:20-08:25

1 stop13h 05m

Southampton Eastleigh

Tue 30/9

08:55-21:40

1 stop12h 45m

£235

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 26/9

20:55-08:45

1 stop11h 50m

Southampton Eastleigh

Fri 3/10

17:35-07:40

1 stop14h 05m

£241

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 11/10

06:30-17:30

1 stop11h 00m

Southampton Eastleigh

Sun 12/10

09:20-17:50

1 stop8h 30m

£244

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 11/9

15:10-19:30

1 stop4h 20m

Southampton Eastleigh

Mon 15/9

08:05-14:15

1 stop6h 10m

£278

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 3/10

15:05-18:55

1 stop3h 50m

£87

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 11/10

07:30-11:55

1 stop4h 25m

£155

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Mon 20/10

14:15-19:10

1 stop4h 55m

£168

Flights are sorted by cheapest return flights first.

Deals found on 26/8

Best time to book a flight from Heathrow to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Southampton

What is the cheapest time of day to fly from LHR to SOU?

Find hourly flight availability from Heathrow to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 August 2025.

It’s typically best to fly out from London Heathrow Airport to Southampton at midday. Doing so could potentially save you 37% on the flight price compared to flying in the morning, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Southampton from London Heathrow?

    Located just 3.5 mi from the city center, Southampton Eastleigh is the airport most travelers will use when flying to Southampton from London Heathrow. Booking flights from London Heathrow to Eastleigh (SOU) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 0 different airlines.

  • How long is the flight from London Heathrow Airport to Southampton?

    KLM can get you from London Heathrow Airport to Southampton in just under 11h 50m. Your travel time can differ by up to . London Heathrow Airport and Southampton are separated by a distance of 53 mi.

  • Can I find deals for flights from Heathrow to Southampton that include hotel bookings?

    Yes. In addition to deals on Heathrow to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Southampton.

  • Can I find deals for business class flights from Heathrow to Southampton?

    Yes. Cheapflights offers flight deals from Heathrow to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Southampton?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Southampton (average of £203). Flying from London Heathrow Airport to Southampton in November is currently the most expensive (average of £262). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Southampton?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Southampton. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Southampton?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Southampton for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Heathrow to Southampton with no change fees?

Need flexible booking options for your flight to Southampton from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Southampton become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Southampton on Cheapflights with our Price Alert feature and get notified when better prices are available.

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