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 40m. Your travel time can differ by up to . London Heathrow Airport and Southampton are separated by a distance of 53 mi.

In terms of precipitation, rainfall in Southampton ranges from 25.0 - 76.0 inches per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Southampton when rainfall is around 25.0 mm.

If weather is an important factor for your trip to Southampton, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

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.

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.

£91+ Cheap Flights from London Heathrow Airport to Southampton

Cheap flight deals from Heathrow to Southampton

Enter your travel dates to find the best prices.

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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 21 August 2026.

Sat 19/915:00 -

1 stop3h 55m

Mon 28/909:20 -

1 stop4h 35m

Deal found 16/8£220

Sat 26/915:00 -

1 stop3h 55m

Mon 28/909:20 -

1 stop4h 35m

Deal found 21/8£222

Wed 16/918:20 -

1 stop14h 05m

Wed 23/912:35 -

1 stop9h 15m

Deal found 19/8£233

Thu 1/1007:30 -

1 stop4h 35m

Thu 8/1012:35 -

1 stop9h 15m

Deal found 17/8£247

Mon 21/920:55 -

1 stop11h 40m

Mon 28/917:20 -

1 stop3h 35m

Deal found 21/8£247

Fri 2/1007:25 -

1 stop11h 35m

Fri 9/1008:55 -

1 stop8h 50m

Deal found 18/8£249

Wed 2/919:20 -

1 stop13h 05m

Sun 6/908:55 -

1 stop12h 30m

Deal found 19/8£254

Mon 5/1015:10 -

1 stop4h 20m

Mon 12/1020:00 -

1 stop13h 05m

Deal found 21/8£255

Wed 16/920:55 -

1 stop11h 40m

Wed 23/917:20 -

1 stop3h 35m

Deal found 16/8£258

Find flight deals from Heathrow to Southampton

Round-trip from	£174
One-way from	£91

19/9-28/9
2 total stops
17h 45m total
London to Southampton

Search Deals

29/9
1 total stop
24h 00m total
London to Southampton

Search Deals

Cheapflights Fare Finder

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

Cheapest return flight

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Mon 21/9

20:55-08:35

1 stop11h 40m

Southampton Eastleigh

Mon 28/9

17:20-20:55

1 stop3h 35m

£247

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Wed 2/9

19:20-08:25

1 stop13h 05m

Southampton Eastleigh

Sun 6/9

08:55-21:25

1 stop12h 30m

£254

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Wed 16/9

20:55-08:35

1 stop11h 40m

Southampton Eastleigh

Wed 23/9

17:20-20:55

1 stop3h 35m

£258

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Thu 1/10

07:30-12:05

1 stop4h 35m

Southampton Eastleigh

Thu 8/10

12:35-21:50

1 stop9h 15m

£266

Fastest return journey

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Sat 5/9

15:00-18:55

1 stop3h 55m

Southampton Eastleigh

Wed 9/9

09:20-13:55

1 stop4h 35m

£281

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Fri 18/9

19:15-08:45

1 stop13h 30m

Southampton Eastleigh

Mon 21/9

17:20-20:55

1 stop3h 35m

£284

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Mon 14/9

19:15-08:35

1 stop13h 20m

Southampton Eastleigh

Mon 21/9

17:20-20:55

1 stop3h 35m

£299

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Sun 13/9

22:00-08:40

1 stop10h 40m

Southampton Eastleigh

Sun 20/9

09:20-13:55

1 stop4h 35m

£299

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Thu 17/9

07:30-12:05

1 stop4h 35m

Southampton Eastleigh

Thu 24/9

08:55-21:50

1 stop12h 55m

£308

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Thu 7/1

06:35-19:00

1 stop12h 25m

Southampton Eastleigh

Mon 11/1

19:40-11:25

1 stop15h 45m

£337

Flights are sorted by cheapest return flights first.

Deals found on 20/8

Showing 1-10 of 16 resultsSorted by cheapest first

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.

LHR-SOU

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?

When flying from London Heathrow Airport to Southampton, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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 40m. 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.

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Cheap flights from London Heathrow Airport to Southampton from £91

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Southampton

Cheapest flights from Heathrow to SouthamptonExplore 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 21 August 2026.

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 21 August 2026.

Best flights from Heathrow to SouthamptonDiscover carefully curated flight deals from Heathrow to Southampton that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Discover carefully curated flight deals from Heathrow to Southampton that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Heathrow to SouthamptonDiscover last-minute flight deals from Heathrow to Southampton. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Southampton. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Heathrow to SouthamptonSearch for one-way flight options from Heathrow to Southampton. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Search for one-way flight options from Heathrow to Southampton. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Find flight deals from Heathrow to Southampton

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Use the filters below to find and compare flights from London Heathrow Airport to Southampton that are best for you.

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.

Cheapflights Insights

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

When flying from London Heathrow Airport to Southampton, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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

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

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

How can I find direct flights from Heathrow to Southampton?

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

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 Heathrow to Southampton

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Complete your trip

Complete your trip to Southampton by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

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Find flights from Heathrow to Southampton, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Southampton flights

Browse other Heathrow and Southampton flight options. Last updated on 21 August 2026.

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

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

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

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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 21 August 2026.

Best flights from Heathrow to Southampton
Discover carefully curated flight deals from Heathrow to Southampton that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Heathrow to Southampton
Discover last-minute flight deals from Heathrow to Southampton. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Heathrow to Southampton
Search for one-way flight options from Heathrow to Southampton. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.