Cheap flights from Portsmouth to Heathrow

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London (LHR)
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How to find the cheapest flight from
Portsmouth (SOU) to Heathrow (LHR)

All the information you need to plan the best SOU to LHR flight in 2021: compare Portsmouth to Heathrow flight prices with the expected peak season, weather and rainfall in Heathrow.
How far in advance should I book a flight from Portsmouth to Heathrow?

Find a great deal and save up to 37% by booking at least 58 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Portsmouth to Heathrow within the next two weeks, with the cheapest ticket starting at £82.

What is the cheapest month to fly from Portsmouth to Heathrow?

Flights from Portsmouth to Heathrow lean towards being more expensive in December. Prices are generally better when you fly from Portsmouth to Heathrow in March, with the cheapest ticket starting at £46.

Cheap flights from Portsmouth to Heathrow in April, May 2021

The best prices found for SOU to LHR flights in April, May
15 Apr - 18 Apr
£531pp
SOU
Southampton Eastleigh
Multiple airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
 
1 STOP
SOU
Southampton Eastleigh
27 May - 27 May
£586pp
SOU
Southampton Eastleigh
Multiple airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
     
3 STOPS
SOU
Southampton Eastleigh
15 Apr - 18 Apr
£601pp
SOU
Southampton Eastleigh
Multiple airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
     
3 STOPS
SOU
Southampton Eastleigh

Portsmouth to Heathrow 2021 flight deals

Cheap flights to Heathrow from Portsmouth found for this year
15 Apr - 18 Apr
£531pp
SOU
Southampton Eastleigh
Multiple airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
 
1 STOP
SOU
Southampton Eastleigh
27 May - 27 May
£586pp
SOU
Southampton Eastleigh
Multiple airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
     
3 STOPS
SOU
Southampton Eastleigh
15 Apr - 18 Apr
£601pp
SOU
Southampton Eastleigh
Multiple airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
     
3 STOPS
SOU
Southampton Eastleigh

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Portsmouth</span> to <span class="emphasized">Heathrow</span> flights.

Flight FAQs

From Portsmouth to Heathrow

Are flight prices decreasing from Southampton to Heathrow due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Southampton and Heathrow for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Southampton Eastleigh to London Heathrow have flexible cancellations due to COVID-19?

AccesRail and Flybe are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Portsmouth to Heathrow for under £652 on Cheapflights?

Yes, there are multiple flights from Portsmouth to Heathrow for under £652. The cheapest flight booked recently is on Multiple Airlines for just £586, but on average you can expect to pay £586.

Are there direct flights from Portsmouth to Heathrow for under £580 on Cheapflights?

There are no direct flights from Portsmouth to Heathrow, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Does it rain more in Southampton or Heathrow?

The rainfall in Southampton is generally same as the rainfall in Heathrow. This will continue over the next 13 days.

Is Southampton weather warmer or cooler than Heathrow?

Expect the weather to be around 24 °C on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Heathrow is generally hotter than in Southampton.

Alternative routes for Portsmouth to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Heathrow

Things to know before you go - useful duration and weather info for your trip from Portsmouth to Heathrow.
Average temperature for April in Heathrow
14.0 °C
Avg rainfall for April in Heathrow
48.0 mm

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