Cheap flights from London to Portsmouth from £66
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from London to Portsmouth
Keep the following information in mind while searching for London to Portsmouth flight deals. Data was last updated 11 juillet 2025.
Round-trip from | £146 |
---|---|
One-way from | £66 |
Find flight deals from London to Portsmouth
Cheapest flights from London to PortsmouthExplore the most affordable flight options available from London to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 juillet 2025.
Explore the most affordable flight options available from London to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 juillet 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from London to Portsmouth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 juillet 2025.
Use the filters below to find and compare flights from London to Portsmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonSouthampton
STN - SOU
STNSOU
London Stansted
ven. 5/9
22:20-10:15
1 stop11h 55m
Southampton Eastleigh
mar. 9/9
12:25-21:00
1 stop8h 35m
LondonSouthampton
LTN - SOU
LTNSOU
London Luton
ven. 29/8
22:15-07:35
1 stop9h 20m
Southampton Eastleigh
dim. 31/8
21:30-08:20
1 stop10h 50m
LondonSouthampton
STN - SOU
STNSOU
London Stansted
ven. 5/9
19:50-10:15
2 stops14h 25m
Southampton Eastleigh
mar. 9/9
12:25-21:00
1 stop8h 35m
LondonSouthampton
LTN - SOU
LTNSOU
London Luton
lun. 18/8
21:55-08:40
1 stop10h 45m
Southampton Eastleigh
mar. 26/8
20:00-09:25
1 stop13h 25m
LondonSouthampton
LGW - SOU
LGWSOU
London Gatwick
ven. 5/9
19:20-07:55
1 stop12h 35m
Southampton Eastleigh
mar. 9/9
08:55-22:25
1 stop13h 30m
LondonSouthampton
LHR - SOU
LHRSOU
London Heathrow
ven. 5/9
20:55-07:55
1 stop11h 00m
Southampton Eastleigh
mar. 9/9
12:25-21:45
1 stop9h 20m
LondonSouthampton
LGW - SOU
LGWSOU
London Gatwick
ven. 10/10
06:20-11:45
1 stop5h 25m
Southampton Eastleigh
jeu. 16/10
15:50-01:10
1 stop9h 20m
LondonSouthampton
LHR - SOU
LHRSOU
London Heathrow
jeu. 7/8
20:55-08:45
1 stop11h 50m
Southampton Eastleigh
mer. 13/8
09:20-16:15
1 stop6h 55m
LondonSouthampton
LCY - SOU
LCYSOU
London City
jeu. 7/8
07:45-17:50
1 stop10h 05m
Southampton Eastleigh
mer. 13/8
09:20-18:35
1 stop9h 15m
LondonSouthampton
LHR - SOU
LHRSOU
London Heathrow
mer. 20/8
21:10-08:40
1 stop11h 30m
Southampton Eastleigh
mer. 27/8
09:10-14:55
1 stop5h 45m
Best time to book a flight from London to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth from London with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London to Portsmouth
What is the cheapest time of day to fly from LON to P0R?
Find hourly flight availability from London to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 juillet 2025.
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.
Reviews of airlines servicing Portsmouth
Get insights into the airlines that provide service to Portsmouth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portsmouth. Reviews last updated 11 juillet 2025.
Check out reviews from past customers who have flown with KLM, Aer Lingus, andeasyJet from London to Portsmouth to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
Boarding
Comfort
Food
Crew
Entertainment
Reviews
Anonymous,Jun 2025
AMS - BOS
Overall
Boarding
Comfort
Food
Crew
Entertainment
Reviews
Anonymous,Jun 2025
AMS - BOS
Overall
Boarding
Comfort
Food
Crew
Entertainment
Reviews
Anonymous,Jun 2025
AMS - BOS
Overall
Boarding
Comfort
Food
Crew
Entertainment
Reviews
Anonymous,Jun 2025
AMS - BOS
Overall
Boarding
Comfort
Food
Crew
Entertainment
Reviews
Anonymous,Jun 2025
AMS - BOS
Related info for your journey
Find useful and relevant information for your journey from London to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for London to Portsmouth
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How does Cheapflights help users find flights from London to Portsmouth?
Cheapflights makes it easy to find London to Portsmouth flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from London to Portsmouth?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Portsmouth from London.
Can Cheapflights find flights from London to Portsmouth with no change fees?
Certainly. Search results for flights to Portsmouth from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from London to Portsmouth become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Portsmouth from London today and book when prices fit your budget.