Skyscanner

Cheap Flights from Southampton to London Heathrow

Compare Southampton to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

Book the best London Heathrow fare with no extra fees

Flight deals from Southampton to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Southampton to London Heathrow? Find the lowest prices on one-way and return tickets right here.
London.R 1,955 per passenger.Departing Mon, 8 Sep.One-way flight with easyJet.Outbound indirect flight with easyJet, departs from Southampton on Mon, 8 Sep, arriving in London Heathrow.Price includes taxes and charges.From R 1,955, select.
London.R 2,115 per passenger.Departing Sat, 1 Nov.One-way flight with easyJet.Outbound indirect flight with easyJet, departs from Southampton on Sat, 1 Nov, arriving in London Heathrow.Price includes taxes and charges.From R 2,115, select.
London.R 2,289 per passenger.Departing Sun, 31 Aug.One-way flight with easyJet.Outbound indirect flight with easyJet, departs from Southampton on Sun, 31 Aug, arriving in London Heathrow.Price includes taxes and charges.From R 2,289, select.
London.R 2,338 per passenger.Departing Fri, 10 Oct.One-way flight with easyJet.Outbound indirect flight with easyJet, departs from Southampton on Fri, 10 Oct, arriving in London Heathrow.Price includes taxes and charges.From R 2,338, select.
London.R 2,603 per passenger.Departing Tue, 9 Jun.One-way flight with easyJet.Outbound indirect flight with easyJet, departs from Southampton on Tue, 9 Jun, arriving in London Heathrow.Price includes taxes and charges.From R 2,603, select.
London.R 2,821 per passenger.Departing Fri, 5 Dec.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Southampton on Fri, 5 Dec, arriving in London Heathrow.Price includes taxes and charges.From R 2,821, select.
London.R 2,894 per passenger.Departing Wed, 15 Apr.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Southampton on Wed, 15 Apr, arriving in London Heathrow.Price includes taxes and charges.From R 2,894, select.

Find the cheapest month to fly from Southampton to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Southampton to London Heathrow flights are currently cheapest in September.
Aug
from R 2,289
Sep
from R 1,955
Oct
from R 2,338
Nov
from R 2,115
Dec
from R 2,821
Jan
Find prices
Feb
Find prices
Mar
Find prices
Apr
from R 2,894
May
Find prices
Jun
from R 2,603
Jul
Find prices

Southampton to London Heathrow: Alternative routes

Compare routes from Southampton to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Southampton to London: Flight information

The things to know before you go.
Cheapest flight foundR 1,955
Cheapest month to flySeptember

Finding cheap flights from Southampton to London Heathrow: Frequently asked questions

The best price we found for a return flight from Southampton to London Heathrow is R 4,901. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Southampton to London Heathrow. But we found flights with one or more stops from R 4,901.
As of August 2025, there are no flights flying from Southampton to London Heathrow.
The cheapest month to fly from Southampton to London Heathrow is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Southampton Airport to London Heathrow Airport on Monday, 1 September 2025.
No airlines currently offer direct flights between Southampton Airport and London Heathrow Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, easyJet offers the cheapest flight tickets to London Heathrow.

Flying from Southampton Airport (SOU) to London Heathrow Airport (LHR): what you need to know

  • London's timezone is UTC+0, which is the same as Southampton.

  • Your SOU to LHR flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • During popular months like August, it's a good idea to get to the airport earlier. Plan to arrive two hours before domestic departures and four hours ahead of international flights when you fly during peak periods in general.

  • Think about adding a stopover when booking your ticket from Southampton Airport to London Heathrow Airport. Simply deselect 'Direct flights only' to break up your journey, or visit a new city along the way. Here are some options between SOU and LHR:

    • Jersey Airport

    • Amsterdam Airport Schiphol

    • George Best Belfast City Airport

How to find the cheapest flights from Southampton Airport (SOU) to London Heathrow Airport (LHR)

  • R 1,955 is the lowest price for a one-way Southampton Airport to London Heathrow Airport flight. Return flights start from R 4,901. These prices may change based on availability and demand.

  • It's a good idea to book early if you want to get cheap tickets from SOU to LHR. That's because flight prices are based on demand, which tends to rise closer to departure.

  • If you're flexible with your trip dates, try using the 'Whole month' search tool. It'll show you the cheapest price in every month when looking for a flight from Southampton Airport to London Heathrow Airport.

  • Snapping up cheap flights from SOU to LHR couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll notify you as soon as a lower fare pops up.

  • Choose your preferred departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from Southampton Airport to London Heathrow Airport.

Handy information about Southampton Airport (SOU)

  • 55.7% of flights that depart Southampton Airport land at their destination on schedule.

  • Southampton Airport is about 8 kilometres from central Southampton. If you're catching a cab, ride-sharing or driving from the centre, it'll take 20 minutes or so to get there, depending on the traffic.

  • Planning to take public transport? Expect a journey time of around 25 minutes.

  • Need a handy hotel close to SOU? If you're catching an early flight from Southampton Airport to London Heathrow Airport, these accommodation options will have you moments from check-in:

Arriving at London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • London Heathrow Airport is approximately 31 kilometres from central London. Driving there takes about 55 minutes.

  • When travelling on public transport, expect a journey of about 1 hour.

When to fly to London Heathrow Airport (LHR)

  • It's time to choose your travel dates for your flight from Southampton Airport to London Heathrow Airport. July is the busiest month to head to London. If you like a quieter vibe, go in February.

  • The warmest month in London is July, with the temperature ranging between 11ºC (52ºF) and 26ºC (79ºF). Book your flights from Southampton Airport to London Heathrow Airport in this month if this is the type of weather you like.

  • If you'd rather travel in cooler conditions, search for a cheap ticket from SOU to LHR in January. Temperatures average between 0ºC (32ºF) and 9ºC (48ºF) then.

Explore more of United Kingdom

  • Birmingham is just one of the many places in United Kingdom waiting to be discovered after you've experienced London. Around 161 kilometres away to the north-west, popular attractions include Cadbury World, The Library of Birmingham and National Sea Life Centre.

  • Bristol is another standout destination in United Kingdom and is around 177 kilometres west of London. No journey is complete without seeing Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

Plan the rest of your trip from Southampton to London

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.