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Cheap flights from Southampton to London Heathrow Airport from £94

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — LHR
20 Jul — 27 Jul1
1 adult

Cheap flight deals from Southampton to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Heathrow (LHR). 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 15 July 2025.

Round-trip from

£261

One-way from

£94
27/8-3/9
  • 27/8-3/9
  • 2 total stops
  • 13h 10m total
  • Southampton to London
6/10
  • 6/10
  • 1 total stop
  • 9h 00m total
  • Southampton to London

Find flight deals from Southampton to Heathrow

Cheapest flights from Southampton to Heathrow
Explore the most affordable flight options available from Southampton to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2025.

Wed 27/809:10SOU - LHR
1 stop4h 45mMultiple Airlines
Wed 3/907:40LHR - SOU
1 stop8h 25mMultiple Airlines
Deal found 13/7£261
Sat 2/809:20SOU - LHR
1 stop4h 30mKLM
Mon 4/806:30LHR - SOU
1 stop11h 20mKLM
Deal found 13/7£322
Thu 28/809:40SOU - LHR
1 stop6h 15mAer Lingus
Thu 4/914:20LHR - SOU
1 stop5h 10mAer Lingus
Deal found 14/7£345
Thu 28/808:30SOU - LHR
1 stop12h 55mBritish Airways
Thu 4/907:30LHR - SOU
1 stop8h 35mBritish Airways
Deal found 14/7£380

Cheapflights Fare Finder

Customise your flight search to find flights from Southampton to Heathrow 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 15 July 2025.
Use the filters below to find and compare flights from Southampton to London Heathrow Airport that are best for you.

Fly from

Southampton

Fly to

Heathrow

Route

Depart

Return

Price

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 27/8

09:10-13:55

1 stop4h 45m

London Heathrow

Wed 3/9

07:40-16:05

1 stop8h 25m

£261

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 2/8

09:20-13:50

1 stop4h 30m

London Heathrow

Mon 4/8

06:30-17:50

1 stop11h 20m

£322

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 28/8

09:40-15:55

1 stop6h 15m

London Heathrow

Thu 4/9

14:20-19:30

1 stop5h 10m

£345

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 28/8

08:30-21:25

1 stop12h 55m

London Heathrow

Thu 4/9

07:30-16:05

1 stop8h 35m

£380

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mon 6/10

11:50-20:50

1 stop9h 00m

£94

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 31/12

11:40-18:25

1 stop6h 45m

£134

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 29/8

17:35-07:40

1 stop14h 05m

£207

Flights are sorted by cheapest return flights first.

Deals found on 14/7

Best time to book a flight from Southampton to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Southampton 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 Southampton to London Heathrow Airport

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

Find hourly flight availability from Southampton to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 July 2025.

A simple way to save on the total cost of your ticket is to fly from Southampton to London Heathrow Airport at midday. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight in the evening.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 15 July 2025.
Read reviews from past customers who have flown with KLM, Aer Lingus, andBritish Airways from Southampton to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.7

Overall

7.8

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.7

Overall

7.8

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.7

Overall

7.8

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.7

Overall

7.8

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Southampton to Heathrow. 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 from for flights from Southampton to London Heathrow?

    Southampton Eastleigh (SOU) is the airport you will fly out of if you book a flight from Southampton to London Heathrow. You should not have trouble finding flights to London Heathrow from Eastleigh; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Southampton airport to London Heathrow. It is only a 3.5 mi journey to Eastleigh (SOU) from Southampton’s city center.

  • What are the cheapest airlines flying from Southampton to London Heathrow Airport round-trip?

    KLM, at £322, was found to be the cheapest airline from Southampton to London Heathrow Airport.Alternate airlines flying return to your destination include Aer Lingus and British Airways.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Southampton to Heathrow 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 Southampton to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Southampton to London Heathrow Airport (average of £112). Flying from Southampton to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Deal
Northampton
Gatwick
Slough
Luton
Wembley
Crawley
Eastbourne
Ilford
Hayes
Ipswich
Southend-on-Sea
Folkestone
Watford
Winchester
Swindon
Maidstone

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Southampton to Heathrow

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

Fly with Cheapflights

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

Cheapflights makes it easy to find Southampton to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Southampton to Heathrow 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 Southampton to Heathrow with no change fees?

Yes, we can. To see specific flights from Southampton to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

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

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