Cheap flights from Portsmouth to London from £94
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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Portsmouth to London
Keep the following information in mind while searching for Portsmouth to London flight deals. Data was last updated 15 September 2025.
Round-trip from | £128 |
---|---|
One-way from | £94 |
Find flight deals from Portsmouth to London
Cheapest flights from Portsmouth to LondonExplore the most affordable flight options available from Portsmouth to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.
Explore the most affordable flight options available from Portsmouth to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Portsmouth to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SouthamptonLondon
SOU - LTN
SOULTN
Southampton Eastleigh
Thu 16/10
15:05-22:10
1 stop7h 05m
London Luton
Wed 22/10
19:20-12:45
1 stop17h 25m
SouthamptonLondon
SOU - LGW
SOULGW
Southampton Eastleigh
Sun 12/10
13:10-09:45
1 stop20h 35m
London Gatwick
Sun 19/10
19:40-07:40
1 stop12h 00m
SouthamptonLondon
SOU - LGW
SOULGW
Southampton Eastleigh
Thu 16/10
08:55-22:45
1 stop13h 50m
London Gatwick
Wed 22/10
21:50-12:45
1 stop14h 55m
SouthamptonLondon
SOU - STN
SOUSTN
Southampton Eastleigh
Mon 13/10
20:30-15:45
1 stop19h 15m
London Stansted
Mon 20/10
22:00-08:15
1 stop10h 15m
SouthamptonLondon
SOU - STN
SOUSTN
Southampton Eastleigh
Wed 29/10
16:05-21:20
1 stop5h 15m
London Stansted
Wed 5/11
08:30-15:35
1 stop7h 05m
SouthamptonLondon
SOU - LTN
SOULTN
Southampton Eastleigh
Wed 29/10
20:10-08:35
1 stop12h 25m
London Luton
Wed 5/11
06:50-11:55
1 stop5h 05m
SouthamptonLondon
SOU - STN
SOUSTN
Southampton Eastleigh
Thu 30/10
20:10-07:50
1 stop11h 40m
London Stansted
Thu 6/11
08:30-15:35
1 stop7h 05m
SouthamptonLondon
SOU - STN
SOUSTN
Southampton Eastleigh
Sat 11/10
15:20-20:55
1 stop5h 35m
London Stansted
Sun 12/10
06:45-11:25
1 stop4h 40m
SouthamptonLondon
SOU - LGW
SOULGW
Southampton Eastleigh
Sat 11/10
08:55-15:50
1 stop6h 55m
London Gatwick
Sat 18/10
20:20-07:40
2 stops35h 20m
SouthamptonLondon
SOU - LTN
SOULTN
Southampton Eastleigh
Thu 30/10
09:30-17:05
1 stop7h 35m
London Luton
Thu 6/11
14:10-19:40
1 stop5h 30m
Best time to book a flight from Portsmouth to London
Have a flexible travel schedule? Discover the best time to fly to London from Portsmouth with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Portsmouth to London
What is the cheapest time of day to fly from P0R to LON?
Find hourly flight availability from Portsmouth to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 September 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to London as you normally would.
What is the cheapest day to fly from Portsmouth to London?
Use this chart to determine the cheapest time to fly return from Portsmouth to London. Price data was last updated on 14 September 2025.
Travellers seeking maximum savings on their Portsmouth to London flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Portsmouth to London. 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 Portsmouth to London
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How does Cheapflights help users find flights from Portsmouth to London?
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Why should you use Cheapflights to find cheap flight tickets from Portsmouth to London?
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