Find flights
When to book
FAQs

Cheap flights from Southampton to London Heathrow Airport from £81

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — LHR
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 18 September 2025.

Round-trip from

£230

One-way from

£81
30/9-3/10
  • 30/9-3/10
  • 2 total stops
  • 18h 10m total
  • Southampton to London
Search Deals
9/1
  • 9/1
  • 1 total stop
  • 24h 05m total
  • Southampton to London
Search Deals

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 18 September 2025.

Tue 30/920:00SOU - LHR
1 stop14h 20mMultiple Airlines
Fri 3/1015:05LHR - SOU
1 stop3h 50mMultiple Airlines
Deal found 16/9£230
Wed 1/1020:00SOU - LHR
1 stop12h 00mAer Lingus
Sun 5/1022:00LHR - SOU
1 stop11h 10mAer Lingus
Deal found 16/9£241
Wed 15/1009:10SOU - LHR
1 stop4h 45mAer Lingus
Wed 22/1007:40LHR - SOU
1 stop11h 50mAer Lingus
Deal found 16/9£251
Sat 1/1109:30SOU - LHR
1 stop11h 35mAer Lingus
Sat 8/1120:45LHR - SOU
1 stop12h 00mAer Lingus
Deal found 16/9£254
Sat 8/1109:25SOU - LHR
1 stop5h 00mKLM
Mon 10/1120:25LHR - SOU
1 stop11h 45mKLM
Deal found 17/9£271
Wed 15/1009:00SOU - LHR
2 stops11h 20mMultiple Airlines
Wed 22/1014:20LHR - SOU
1 stop5h 10mMultiple Airlines
Deal found 16/9£308
Sat 8/1109:40SOU - LHR
1 stop4h 15mMultiple Airlines
Mon 10/1108:15LHR - SOU
2 stops9h 20mMultiple Airlines
Deal found 17/9£325
Mon 22/916:50SOU - LHR
1 stop4h 05mBritish Airways
Mon 29/907:45LHR - SOU
1 stop4h 55mBritish Airways
Deal found 16/9£578
Wed 1/1012:40SOU - LHR
2 stops7h 40mMultiple Airlines
Sun 5/1022:00LHR - SOU
1 stop11h 10mMultiple Airlines
Deal found 16/9£656

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 18 September 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

Tue 30/9

20:00-10:20

1 stop14h 20m

London Heathrow

Fri 3/10

15:05-18:55

1 stop3h 50m

£230

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 1/10

20:00-08:00

1 stop12h 00m

London Heathrow

Sun 5/10

22:00-09:10

1 stop11h 10m

£241

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 15/10

09:10-13:55

1 stop4h 45m

London Heathrow

Wed 22/10

07:40-19:30

1 stop11h 50m

£251

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 1/11

09:30-21:05

1 stop11h 35m

London Heathrow

Sat 8/11

20:45-08:45

1 stop12h 00m

£254

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 8/11

09:25-14:25

1 stop5h 00m

London Heathrow

Mon 10/11

20:25-08:10

1 stop11h 45m

£271

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 15/10

09:00-20:20

2 stops11h 20m

London Heathrow

Wed 22/10

14:20-19:30

1 stop5h 10m

£308

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 8/11

09:40-13:55

1 stop4h 15m

London Heathrow

Mon 10/11

08:15-17:35

2 stops9h 20m

£325

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 1/10

12:40-20:20

2 stops7h 40m

London Heathrow

Sun 5/10

22:00-09:10

1 stop11h 10m

£656

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 9/1

20:00-20:05

1 stop24h 05m

£81

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sun 26/10

13:45-21:30

1 stop7h 45m

£314

Flights are sorted by cheapest return flights first.

Deals found on 17/9

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 18 September 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.

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.

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

    A quick flight from Southampton to London Heathrow Airport can take about 5h. Aer Lingus provides one of the quickest options available for as low as £271. Southampton and London Heathrow Airport are separated by a distance of 53 mi. This flight may include one or multiple stops.

  • 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
Slough
Gatwick
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Ipswich
Swindon
Dartford
Guildford
Brentford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Edinburgh to Gatwick flights
Edinburgh to Heathrow flights
Edinburgh to Luton flights
Edinburgh to Stansted flights
Edinburgh to London City flights
Newcastle upon Tyne to Heathrow flights
Manchester to Heathrow flights
Newcastle upon Tyne to London City flights
Newcastle upon Tyne to Stansted flights
Manchester to London City flights
Heathrow to Gatwick flights
Newquay to Gatwick flights
Newcastle upon Tyne to Gatwick flights
Newcastle upon Tyne to Luton flights
Manchester to Gatwick flights
Manchester to Stansted flights
Newcastle upon Tyne to Southend flights
Edinburgh to Southend flights
Manchester to Luton flights
Newquay to Heathrow flights
Gatwick to Heathrow flights
Bristol to London City flights
Leeds to Heathrow flights
Exeter to Heathrow flights
Liverpool to Gatwick flights
Liverpool to Stansted flights
Birmingham to Gatwick flights
Birmingham to Stansted flights
Liverpool to Luton flights
Liverpool to Heathrow flights
Bristol to Gatwick flights
Newquay to Luton flights
Birmingham to London City flights
Birmingham to Heathrow flights
Birmingham to Luton flights
Liverpool to London City flights
Exeter to London City flights
Manchester to Southend flights
Bristol to Stansted flights
Bristol to Heathrow flights
Newquay to Southend flights
Newquay to London City flights
Leeds to Stansted flights
Exeter to Luton flights
Exeter to Stansted flights
Darlington to Heathrow flights
Newquay to Stansted flights
Bristol to Luton flights
East Midlands to Heathrow flights

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 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.