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

A quick flight from Southampton to London Heathrow Airport can take about 3h 15m. KLM provides one of the quickest options available for as low as £218. Southampton and London Heathrow Airport are separated by a distance of 53 mi.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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.

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.

£123+ Cheap Flights from Southampton to London Heathrow Airport

Cheap flight deals from Southampton to Heathrow

Enter your travel dates to find the best prices.

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Best

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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 9 November 2026.

Mon 21/1219:25 -

1 stop13h 45m

Mon 28/1209:55 -

1 stop8h 55m

Deal found 6/11£192

Thu 24/1217:35 -

1 stop3h 15m

Thu 31/1208:40 -

1 stop8h 25m

Deal found 8/11£218

Thu 31/1214:25 -

1 stop7h 00m

Wed 6/107:00 -

1 stop7h 35m

Deal found 8/11£219

Thu 31/1217:35 -

1 stop15h 25m

Wed 6/120:25 -

1 stop11h 45m

Deal found 5/11£223

Wed 2/1217:35 -

1 stop3h 15m

Wed 9/1220:25 -

1 stop11h 45m

Deal found 4/11£231

Sat 5/1209:25 -

1 stop22h 15m

Sat 12/1214:05 -

1 stop18h 50m

Deal found 7/11£273

Thu 19/1109:20 -

1 stop8h 30m

Mon 23/1120:45 -

1 stop12h 05m

Deal found 4/11£276

Thu 31/1213:25 -

1 stop6h 25m

Wed 6/108:50 -

1 stop10h 40m

Deal found 7/11£281

Thu 24/1217:10 -

1 stop4h 15m

Thu 31/1214:45 -

2 stops17h 25m

Deal found 5/11£282

Find flight deals from Southampton to Heathrow

Round-trip from	£192
One-way from	£123

21/12-28/12
2 total stops
22h 40m total
Southampton to London

Search Deals

Aer Lingus
12/1-31/12
1 total stop
8h 45m total
Southampton to London

Search Deals

Cheapflights Fare Finder

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

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Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Sun 10/1

15:25-21:40

2 stops6h 15m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£146

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Mon 11/1

12:35-21:05

3 stops8h 30m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£162

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Wed 13/1

12:20-20:50

2 stops8h 30m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£193

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Thu 24/12

17:35-20:50

1 stop3h 15m

London Heathrow

Thu 31/12

08:40-17:05

1 stop8h 25m

£218

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Thu 31/12

14:25-21:25

1 stop7h 00m

London Heathrow

Wed 6/1

07:00-14:35

1 stop7h 35m

£219

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Fri 1/1

08:40-20:50

1 stop12h 10m

London Heathrow

Thu 7/1

06:30-16:50

1 stop10h 20m

£223

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Sun 28/2

17:30-09:00

1 stop15h 30m

London Heathrow

Sat 6/3

08:40-08:55

1 stop24h 15m

£223

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Thu 31/12

17:35-09:00

1 stop15h 25m

London Heathrow

Wed 6/1

20:25-08:10

1 stop11h 45m

£223

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Wed 2/12

17:35-20:50

1 stop3h 15m

London Heathrow

Wed 9/12

20:25-08:10

1 stop11h 45m

£231

SouthamptonLondon

SOU Southampton Eastleigh - LHR London Heathrow

SOULHR

Southampton Eastleigh

Tue 12/1

09:00-21:05

2 stops12h 05m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£258

Flights are sorted by cheapest return flights first.

Deals found on 7/11

Showing 1-10 of 14 resultsSorted by cheapest first

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.

SOU-LHR

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?

A simple way to save on the total cost of your ticket is to fly from Southampton to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the evening.

Related info for your journey

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 3h 15m. KLM provides one of the quickest options available for as low as £218. Southampton and London Heathrow Airport are separated by a distance of 53 mi.
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.

See more FAQs

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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.

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Cheap flights from Southampton to London Heathrow Airport from £123

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southampton to Heathrow

Cheapest flights from Southampton to HeathrowExplore 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 9 November 2026.

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 9 November 2026.

Best flights from Southampton to HeathrowDiscover carefully curated flight deals from Southampton to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 November 2026.

Discover carefully curated flight deals from Southampton to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 November 2026.

Last-minute flights from Southampton to HeathrowDiscover last-minute flight deals from Southampton to Heathrow. Data last updated 9 November 2026 and is based on user searches.

Discover last-minute flight deals from Southampton to Heathrow. Data last updated 9 November 2026 and is based on user searches.

One-way flights from Southampton to HeathrowSearch for one-way flight options from Southampton to Heathrow. Find affordable one-way fares based on user searches. Data last updated 9 November 2026.

Search for one-way flight options from Southampton to Heathrow. Find affordable one-way fares based on user searches. Data last updated 9 November 2026.

Find flight deals from Southampton to Heathrow

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

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.

Cheapflights Insights

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

A simple way to save on the total cost of your ticket is to fly from Southampton to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the evening.

Related info for your journey

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

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

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

How can I find direct flights from Southampton to Heathrow?

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

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Southampton to Heathrow

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Complete your trip

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

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

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

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

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Travel Smart

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 9 November 2026.

Best flights from Southampton to Heathrow
Discover carefully curated flight deals from Southampton to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 November 2026.

Last-minute flights from Southampton to Heathrow
Discover last-minute flight deals from Southampton to Heathrow. Data last updated 9 November 2026 and is based on user searches.

One-way flights from Southampton to Heathrow
Search for one-way flight options from Southampton to Heathrow. Find affordable one-way fares based on user searches. Data last updated 9 November 2026.