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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.
LON — LHR
16 juil. — 23 juil.1
1 adult

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
easyJet
  • easyJet
  • 5/9-9/9
  • 2 total stops
  • 20h 30m total
  • London to Portsmouth
easyJet
  • easyJet
  • 5/9
  • 1 total stop
  • 11h 55m total
  • London to Portsmouth

Find flight deals from London to Portsmouth

Cheapest flights from London to Portsmouth
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.

ven. 5/922:20STN - SOU
1 stop11h 55measyJet
mar. 9/912:25SOU - STN
1 stop8h 35measyJet
Deal found 9/7£146
ven. 29/822:15LTN - SOU
1 stop9h 20measyJet
dim. 31/821:30SOU - LTN
1 stop10h 50measyJet
Deal found 9/7£151
ven. 5/919:50STN - SOU
2 stops14h 25mMultiple Airlines
mar. 9/912:25SOU - STN
1 stop8h 35mMultiple Airlines
Deal found 9/7£162
lun. 18/821:55LTN - SOU
1 stop10h 45mMultiple Airlines
mar. 26/820:00SOU - LTN
1 stop13h 25mMultiple Airlines
Deal found 9/7£163
ven. 5/919:20LGW - SOU
1 stop12h 35mMultiple Airlines
mar. 9/908:55SOU - LGW
1 stop13h 30mMultiple Airlines
Deal found 9/7£166
ven. 5/920:55LHR - SOU
1 stop11h 00mMultiple Airlines
mar. 9/912:25SOU - LHR
1 stop9h 20mMultiple Airlines
Deal found 9/7£194
ven. 10/1006:20LGW - SOU
1 stop5h 25measyJet
jeu. 16/1015:50SOU - LGW
1 stop9h 20measyJet
Deal found 11/7£223
jeu. 7/820:55LHR - SOU
1 stop11h 50mKLM
mer. 13/809:20SOU - LHR
1 stop6h 55mKLM
Deal found 9/7£227
jeu. 7/807:45LCY - SOU
1 stop10h 05mKLM
mer. 13/809:20SOU - LCY
1 stop9h 15mKLM
Deal found 9/7£259
mer. 20/821:10LHR - SOU
1 stop11h 30mAer Lingus
mer. 27/809:10SOU - LHR
1 stop5h 45mAer Lingus
Deal found 9/7£269
lun. 15/1219:40LGW - SOU
1 stop11h 50mAurigny Air
jeu. 15/108:00SOU - LGW
1 stop3h 15mAurigny Air
Deal found 9/7£288
jeu. 21/815:30LCY - SOU
1 stop5h 05mMultiple Airlines
jeu. 28/811:25SOU - LCY
1 stop4h 45mMultiple Airlines
Deal found 9/7£295

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

London

Fly to

Portsmouth

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

£146

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

£151

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

£162

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

£163

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

£166

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

£194

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

£223

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

£227

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

£259

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

£269

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 29 results
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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.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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

    The cheapet airlines for a one-way flight from London to Portsmouth are easyJet (£66), Loganair (£204), and Aurigny Air (£205).

  • What are the most popular routes from London to Portsmouth?

  • Can I find deals for flights from London to Portsmouth that include hotel bookings?

    Yes. In addition to deals on London to Portsmouth flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Portsmouth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Portsmouth.

  • Can I find deals for business class flights from London to Portsmouth?

    Yes. Cheapflights offers flight deals from London to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Portsmouth?

    Currently, January is the cheapest month in which you can book a flight from London to Portsmouth (average of £112). Flying from London to Portsmouth in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for London to Portsmouth

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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.

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