Cheap flights from London to Portsmouth

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The best prices from London to Portsmouth are usually found in May or June, booked 26 days in advance, depart on a Thursday or Monday and return on a Tuesday

How to find the cheapest flight from
London (LON) to Portsmouth

All the information you need to plan the best LON to LHR flight in 2022: compare London to Portsmouth flight prices with the expected peak season, weather and rainfall in Portsmouth.
LON - P0R
Price
£61 - £444

Popular in

January

High demand for flights, 53% potential price rise

Cheapest in

May

Best time to find cheap flights, 71% potential price drop

Average price

£229

Average for round-trip flights in August 2022

Round-trip from

£50

From London (LON) to Portsmouth

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from London to Portsmouth?

Travelers have found it’s best to book a flight 34 days in advance to save up to 8% 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 London to Portsmouth 1-2 weeks in advance for as low as £63, or £63 for flights within the next 24 hours.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, June can be a great choice for travel to Portsmouth. Flights to Portsmouth from London in June are about £247 on average during June, but can be found for as low as £49.

When is the cheapest time to fly from London to Portsmouth (LON - P0R)?

When flying from London to Portsmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from London to Portsmouth in August, September 2022

The best prices found for LON to Portsmouth flights in August, September
30 Aug - 9 Sep
£210pp
LGW
London Gatwick
Multiple airlines
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
LGW
London Gatwick
14 Sep - 18 Sep
£213pp
LGW
London Gatwick
Multiple airlines
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
LGW
London Gatwick
10 Sep - 17 Sep
£216pp
LGW
London Gatwick
Multiple airlines
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
LGW
London Gatwick

London to Portsmouth 2022 flight deals

Cheap flights to Portsmouth from London found for this year
30 Aug - 9 Sep
£210pp
LGW
London Gatwick
Multiple airlines
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
LGW
London Gatwick
14 Sep - 18 Sep
£213pp
LGW
London Gatwick
Multiple airlines
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
LGW
London Gatwick
10 Sep - 17 Sep
£216pp
LGW
London Gatwick
Multiple airlines
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
LGW
London Gatwick

Cheap British Airways flights from London to Portsmouth

27 Oct - 5 Nov
£252pp
LHR
London Heathrow
British Airways
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
British Airways
 
1 STOP
LHR
London Heathrow
3 Nov - 4 Nov
£303pp
LHR
London Heathrow
British Airways
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
British Airways
 
1 STOP
LHR
London Heathrow
3 Nov - 4 Nov
£351pp
LGW
London Gatwick
British Airways
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
British Airways
 
1 STOP
LGW
London Gatwick

Cheap Aer Lingus flights from London to Portsmouth

14 Sep - 18 Sep
£405pp
LHR
London Heathrow
Aer Lingus
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Aer Lingus
 
1 STOP
LHR
London Heathrow
30 Aug - 9 Sep
£416pp
LHR
London Heathrow
Aer Lingus
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Aer Lingus
 
1 STOP
LHR
London Heathrow
30 Aug - 3 Sep
£454pp
LHR
London Heathrow
Aer Lingus
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Aer Lingus
 
1 STOP
LHR
London Heathrow

Last-minute flights from London to Portsmouth

Late deals on return flights to Portsmouth from London, departing today and this week
20 Aug - 22 Aug
£373pp
LGW
London Gatwick
Multiple airlines
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
LGW
London Gatwick
18 Aug - 3 Sep
£392pp
STN
London Stansted
Multiple airlines
 
1 STOP
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
STN
London Stansted
18 Aug - 3 Sep
£444pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SOU
Southampton Eastleigh
SOU
Southampton Eastleigh
Multiple Airlines
 
1 STOP
STN
London Stansted

One-way flights to Portsmouth from London

The cheapest one-way flights from London to Portsmouth
15:20 - 07:45
Aer Lingus
1 stop
16h 25m
LHR - SOU
Aer Lingus
£188
Kiwi.com
18:10 - 12:00
Multiple Airlines
1 stop
17h 50m
LTN - SOU
Multiple Airlines
£229
Kiwi.com
05:20 - 11:45
KLM
1 stop
6h 25m
LCY - SOU
KLM
£300
mytrip.com

Related info for your journey

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

Flight FAQs

From London to Portsmouth

Which airlines flying from London to Portsmouth have flexible cancellations due to COVID-19?

Some of the carriers operating flights from London to Portsmouth that may be offering flexible cancellation policies are 748 Air Services, Flybe, and Vipper. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from London to Portsmouth for under £300 on Cheapflights?

Yes, there are multiple flights from London to Portsmouth for under £300. The cheapest flight booked recently is on Multiple Airlines for just £210, but on average you can expect to pay £347.

Are there last-minute flights available from London to Portsmouth for under £400?

There are currently 10+ open flights from London to Portsmouth within the next 7 days for less than £400.

What are the cheapest airlines to fly from London to Portsmouth one-way?

The cheapest airlines for a one-way flight from London to Portsmouth are British Airways (£109), Aer Lingus (£188), and KLM (£300).

What are the most popular routes from London to Portsmouth?

While some choose either London City - Southampton Eastleigh or London Heathrow - Southampton Eastleigh, London Gatwick - Southampton Eastleigh is the most popular route from London to Portsmouth.

Alternative routes for London to Portsmouth

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

Hourly flight availability from London to Portsmouth

See what time of day planes typically take off from London towards Portsmouth.
Afternoon Midday to 6 PM 43% of flight departures
Morning 6 AM to midday 35% of flight departures
Evening 6 PM to midnight 18% of flight departures
Early morning Midnight to 6 AM 4% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from London to Portsmouth
See how many times per day planes take to the skies headed from London to Portsmouth.
Sunday
5 daily flights
Monday
5 daily flights
Tuesday
5 daily flights
Wednesday
5 daily flights
Thursday
5 daily flights
Friday
5 daily flights
Saturday
5 daily flights
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