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

KLM can get you from London Heathrow Airport to Southampton in just under 16h 30m. 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.

£78+ 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 6 October 2026.

Wed 18/1114:15 -

1 stop5h 15m

Wed 25/1120:00 -

1 stop14h 10m

Deal found 4/10£223

Tue 3/1108:50 -

1 stop10h 40m

Tue 10/1109:20 -

1 stop10h 30m

Deal found 6/10£225

Tue 10/1108:50 -

1 stop10h 40m

Tue 17/1109:20 -

1 stop10h 30m

Deal found 3/10£226

Sat 17/1018:10 -

1 stop14h 25m

Wed 21/1009:20 -

1 stop4h 35m

Deal found 6/10£227

Sat 7/1116:25 -

1 stop16h 30m

Sat 14/1117:20 -

1 stop3h 30m

Deal found 5/10£244

Tue 27/1017:10 -

1 stop15h 10m

Wed 4/1108:50 -

1 stop4h 55m

Deal found 3/10£253

Fri 20/1106:15 -

1 stop12h 55m

Sun 22/1119:40 -

1 stop14h 20m

Deal found 4/10£257

Sat 31/1017:50 -

1 stop15h 05m

Sat 7/1109:25 -

1 stop11h 25m

Deal found 3/10£257

Tue 3/1118:45 -

1 stop13h 35m

Tue 10/1119:40 -

1 stop12h 30m

Deal found 6/10£263

Sat 10/1007:30 -

1 stop4h 35m

Thu 15/1008:55 -

1 stop5h 15m

Deal found 2/10£275

Find flight deals from Heathrow to Southampton

Round-trip from	£223
One-way from	£78

Aer Lingus
18/11-25/11
2 total stops
19h 25m total
London to Southampton

Search Deals

Etihad Airways
12/10-31/12
Nonstop
1h 50m 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

Fastest return journey

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Mon 12/10

09:30-11:20

Nonstop1h 50m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£78

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Sun 1/11

08:50-08:50

1 stop24h 00m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£103

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Tue 13/10

16:50-10:15

2 stops17h 25m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£131

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Fri 20/11

20:45-08:45

1 stop12h 00m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£134

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Mon 16/11

14:15-08:50

1 stop18h 35m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£134

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Mon 16/11

20:45-11:45

2 stops15h 00m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£136

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Sat 27/3

17:45-07:25

1 stop13h 40m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£143

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Sun 11/10

08:50-08:40

1 stop23h 50m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£168

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Sun 1/11

10:00-08:20

2 stops22h 20m

Southampton Eastleigh

Wed 31/12

00:00-00:00

Nonstop0h 00m

£201

LondonSouthampton

LHR London Heathrow - SOU Southampton Eastleigh

LHRSOU

London Heathrow

Sat 7/11

16:25-08:55

1 stop16h 30m

Southampton Eastleigh

Sat 14/11

17:20-20:50

1 stop3h 30m

£244

Flights are sorted by cheapest return flights first.

Deals found on 6/10

Showing 1-10 of 20 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 16h 30m. 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 £78

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. 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 6 October 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 6 October 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 6 October 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 6 October 2026.

Last-minute flights from Heathrow to SouthamptonDiscover last-minute flight deals from Heathrow to Southampton. Data last updated 6 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Southampton. Data last updated 6 October 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 6 October 2026.

Search for one-way flight options from Heathrow to Southampton. Find affordable one-way fares based on user searches. Data last updated 6 October 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

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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.

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Heathrow and Southampton flights

Browse other Heathrow and Southampton flight options. Last updated on 6 October 2026.

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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 6 October 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 6 October 2026.

Last-minute flights from Heathrow to Southampton
Discover last-minute flight deals from Heathrow to Southampton. Data last updated 6 October 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 6 October 2026.