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Cheap flights from Portsmouth to Heathrow
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Economy
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 2022: 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.
How far in advance should I book a flight from Portsmouth to London Heathrow Airport?
Travelers have found it’s best to book a flight 34 days in advance to save up to 6% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 34 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portsmouth to London Heathrow Airport 1-2 weeks in advance for as low as £63, or £64 for flights within the next 24 hours.
What is the cheapest month to fly from Portsmouth to London Heathrow Airport?
June can be a great time to fly to London Heathrow Airport from Portsmouth with a flight ticket averaging about £249. Cheapflights users have found deals in the month of June for as cheap as £49. The most expensive prices can be found in the month of December.
Cheap flights from Portsmouth to Heathrow in June, July 2022
The best prices found for Portsmouth to LHR flights in June, July
16 Jul - 23 Jul
£326pp
SOU
Southampton Eastleigh
British Airways
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
1 STOP
SOU
Southampton Eastleigh
16 Jul - 17 Jul
£332pp
SOU
Southampton Eastleigh
British Airways
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
1 STOP
SOU
Southampton Eastleigh
20 Jul - 20 Aug
£374pp
SOU
Southampton Eastleigh
British Airways
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
1 STOP
SOU
Southampton Eastleigh
Portsmouth to Heathrow 2022 flight deals
Cheap flights to Heathrow from Portsmouth found for this year
17 Aug - 9 Sep
£249pp
SOU
Southampton Eastleigh
Multiple airlines
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
1 STOP
SOU
Southampton Eastleigh
10 Aug - 8 Feb
£252pp
SOU
Southampton Eastleigh
British Airways
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
1 STOP
SOU
Southampton Eastleigh
10 Aug - 24 Aug
£257pp
SOU
Southampton Eastleigh
British Airways
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
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
6 Jul - 9 Jul
£835pp
SOU
Southampton Eastleigh
British Airways
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
1 STOP
SOU
Southampton Eastleigh
One-way flights to Heathrow from Portsmouth
The cheapest one-way flights from Portsmouth to Heathrow
13:10 - 16:45
British Airways
1 stop
3h 35m
SOU - LHR
£132
13:10 - 17:10
British Airways
1 stop
4h 00m
SOU - LHR
£157
05:00 - 11:30
British Airways
1 stop
6h 30m
SOU - LHR
£328
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.
Coventry Baginton to London
from £70 pp
Doncaster Sheffield to London
from £213 pp
Bristol to London
from £254 pp
Birmingham to London
from £376 pp
Nottingham East Midlands to London
from £459 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 June in Heathrow
21.0 °C
Avg rainfall for June in Heathrow
45.0 mm
Airports servicing London
Popular flight searches
Check out other popular destinations found by fellow travellers in 2022.
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 | 41% of flight departures |
| Morning 6 AM to midday | 32% of flight departures |
| Evening 6 PM to midnight | 22% of flight departures |
| Early morning Midnight to 6 AM | 5% of flight departures |
Midnight
6 AM
Noon
6 PM