Question 1

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

Accepted Answer

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.

Question 2

What is the cheapest month to book a flight from Southampton to London Heathrow Airport?

Accepted Answer

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.

Question 3

What is the cheapest day to fly from Southampton to London Heathrow Airport?

Accepted Answer

Travellers seeking maximum savings on their Southampton to London Heathrow Airport flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 4

E

Accepted Answer

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.

Question 5

E

Accepted Answer

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).

Question 6

What is the cheapest day to fly round-trip from Southampton to London Heathrow Airport?

Accepted Answer

Leaving on a Friday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 47% on the overall cost on flights from Southampton to London Heathrow Airport.

Question 7

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

Accepted Answer

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.

Question 8

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

Accepted Answer

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.

Question 9

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

Accepted Answer

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

Question 10

How can I find direct flights from Southampton to Heathrow?

Accepted Answer

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

Question 11

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

Accepted Answer

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.

Question 12

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

Accepted Answer

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.

Question 13

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

Accepted Answer

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.

Question 14

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

Accepted Answer

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.

Question 15

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

Accepted Answer

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.

Round-trip from	£261
One-way from	£94

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.

Cheap flight deals from Southampton to Heathrow

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Find 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 15 July 2025.

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.

Cheapflights Fare Finder

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

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.

Reviews of airlines servicing Heathrow

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.

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?

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

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?

What is the cheapest month to book a flight from Southampton to London Heathrow Airport?

Travelling to a place near London Heathrow Airport?

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

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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?

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

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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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.