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How to find the cheapest flight from
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Cheap flights from Portsmouth to Heathrow
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How to find the cheapest flight from
Portsmouth to Heathrow (LHR)
All the information you need to plan the best null to LHR flight in 2021: compare Portsmouth to Heathrow flight prices with the expected peak season, weather and rainfall in Heathrow.
When is the cheapest time to fly from Portsmouth to London Heathrow Airport (P0R - LHR)?
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to London Heathrow Airport as you normally would.
What is the cheapest month to fly from Portsmouth to London Heathrow Airport?
August can be a great time to fly to London Heathrow Airport from Portsmouth with a flight ticket averaging about £58. Cheapflights users have found deals in the month of August for as cheap as £42. The most expensive prices can be found in the month of March.
Cheap flights from Portsmouth to Heathrow in October, November 2021
The best prices found for Portsmouth to LHR flights in October, November
28 Oct - 30 Oct
£474pp
SOU
Southampton Eastleigh
KLM
1 STOP
LHR
London Heathrow
LHR
London Heathrow
KLM
1 STOP
SOU
Southampton Eastleigh
Portsmouth to Heathrow 2021 flight deals
Cheap flights to Heathrow from Portsmouth found for this year
23 Dec - 25 Dec
£226pp
SOU
Southampton Eastleigh
KLM
1 STOP
LHR
London Heathrow
LHR
London Heathrow
KLM
1 STOP
SOU
Southampton Eastleigh
23 Dec - 25 Dec
£228pp
SOU
Southampton Eastleigh
KLM
1 STOP
LHR
London Heathrow
LHR
London Heathrow
KLM
1 STOP
SOU
Southampton Eastleigh
23 Dec - 25 Dec
£254pp
SOU
Southampton Eastleigh
Multiple airlines
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
KLM
1 STOP
SOU
Southampton Eastleigh
Last-minute flights from Portsmouth to Heathrow
Late deals on return flights to Heathrow from Portsmouth, departing today and this week
28 Oct - 30 Oct
£474pp
SOU
Southampton Eastleigh
KLM
1 STOP
LHR
London Heathrow
LHR
London Heathrow
KLM
1 STOP
SOU
Southampton Eastleigh
One-way flights to Heathrow from Portsmouth
The cheapest one-way flights from Portsmouth to Heathrow
09:40 - 14:50
Multiple Airlines
1 stop
5h 10m
SOU - LHR
£154
Kiwi.com
Related info for your journey
Useful info, stats and facts about <span class="emphasized">Portsmouth</span> to <span class="emphasized">Heathrow</span> flights.
Alternative routes for Portsmouth to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
Bristol to London
from £53 pp
Coventry Baginton to London
from £72 pp
Nottingham East Midlands to London
from £110 pp
Birmingham to London
from £144 pp
Doncaster Sheffield to London
from £338 pp
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 October in Heathrow
16.0 °C
Avg rainfall for October in Heathrow
66.0 mm
Airports servicing London
Popular flight searches
Check out other popular destinations found by fellow travellers in 2021.
Hourly flight availability from Portsmouth to Heathrow
See what time of day planes typically take off from Portsmouth towards Heathrow.
| Afternoon Midday to 6 PM | 40% of flight departures |
| Morning 6 AM to midday | 29% of flight departures |
| Evening 6 PM to midnight | 28% of flight departures |
| Early morning Midnight to 6 AM | 3% of flight departures |
Midnight
6 AM
Noon
6 PM