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Cheap flights from Portsmouth to London from £58

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.
LHR — LON
16 Jul — 23 Jul1
1 adult

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 11 July 2025.

Round-trip from

£171

One-way from

£58
24/8-6/9
  • 24/8-6/9
  • 2 total stops
  • 21h 45m total
  • Portsmouth to London
Search Deals
easyJet
  • easyJet
  • 5/9
  • 1 total stop
  • 5h 40m total
  • Portsmouth to London
Search Deals

Find flight deals from Portsmouth to London

Cheapest flights from Portsmouth to London
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 11 July 2025.

Sun 24/821:30SOU - STN
1 stop10h 50mMultiple Airlines
Sat 6/921:20STN - SOU
1 stop10h 55mMultiple Airlines
Deal found 9/7£171
Mon 25/820:00SOU - LTN
1 stop13h 00mMultiple Airlines
Mon 1/921:55LTN - SOU
1 stop10h 45mMultiple Airlines
Deal found 11/7£191
Fri 29/812:15SOU - LGW
1 stop10h 15mMultiple Airlines
Sun 31/819:40LGW - SOU
1 stop12h 00mMultiple Airlines
Deal found 9/7£192
Sat 2/808:05SOU - LTN
1 stop8h 40measyJet
Mon 4/807:00LTN - SOU
1 stop3h 35measyJet
Deal found 9/7£212
Sat 23/817:35SOU - LHR
1 stop14h 05mKLM
Sat 30/814:45LHR - SOU
1 stop18h 00mKLM
Deal found 9/7£252
Wed 6/809:20SOU - LCY
1 stop10h 20mKLM
Wed 13/807:45LCY - SOU
1 stop10h 05mKLM
Deal found 9/7£285
Thu 24/720:50SOU - SEN
1 stop16h 15measyJet
Mon 28/706:30SEN - SOU
1 stop13h 25measyJet
Deal found 9/7£286
Fri 8/808:55SOU - LHR
1 stop6h 25mMultiple Airlines
Fri 15/821:00LHR - SOU
1 stop10h 55mMultiple Airlines
Deal found 11/7£313
Thu 7/808:00SOU - LCY
1 stop10h 50mAurigny Air
Thu 14/808:30LCY - SOU
1 stop23h 00mAurigny Air
Deal found 10/7£339
Tue 5/819:50SOU - LGW
1 stop14h 35mAurigny Air
Tue 12/819:40LGW - SOU
1 stop11h 50mAurigny Air
Deal found 10/7£339
Thu 7/815:35SOU - LCY
1 stop3h 15mMultiple Airlines
Thu 14/806:55LCY - SOU
1 stop4h 00mMultiple Airlines
Deal found 10/7£361
Mon 25/809:40SOU - LHR
1 stop9h 15mAer Lingus
Mon 1/921:10LHR - SOU
1 stop11h 30mAer Lingus
Deal found 11/7£362

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to London 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 July 2025.
Use the filters below to find and compare flights from Portsmouth to London that are best for you.

Fly from

Portsmouth

Fly to

London

Route

Depart

Return

Price

SouthamptonLondon

SOU - STN

SOUSTN

Southampton Eastleigh

Sun 24/8

21:30-08:20

1 stop10h 50m

London Stansted

Sat 6/9

21:20-08:15

1 stop10h 55m

£171

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Mon 25/8

20:00-09:00

1 stop13h 00m

London Luton

Mon 1/9

21:55-08:40

1 stop10h 45m

£191

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Fri 29/8

12:15-22:30

1 stop10h 15m

London Gatwick

Sun 31/8

19:40-07:40

1 stop12h 00m

£192

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Sat 2/8

08:05-16:45

1 stop8h 40m

London Luton

Mon 4/8

07:00-10:35

1 stop3h 35m

£212

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 23/8

17:35-07:40

1 stop14h 05m

London Heathrow

Sat 30/8

14:45-08:45

1 stop18h 00m

£252

SouthamptonLondon

SOU - LCY

SOULCY

Southampton Eastleigh

Wed 6/8

09:20-19:40

1 stop10h 20m

London City

Wed 13/8

07:45-17:50

1 stop10h 05m

£285

SouthamptonLondon

SOU - SEN

SOUSEN

Southampton Eastleigh

Thu 24/7

20:50-13:05

1 stop16h 15m

London Southend

Mon 28/7

06:30-19:55

1 stop13h 25m

£286

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Fri 8/8

08:55-15:20

1 stop6h 25m

London Heathrow

Fri 15/8

21:00-07:55

1 stop10h 55m

£313

SouthamptonLondon

SOU - LCY

SOULCY

Southampton Eastleigh

Thu 7/8

08:00-18:50

1 stop10h 50m

London City

Thu 14/8

08:30-07:30

1 stop23h 00m

£339

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Tue 5/8

19:50-10:25

1 stop14h 35m

London Gatwick

Tue 12/8

19:40-07:30

1 stop11h 50m

£339

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 27 results
1
2
3

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.
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 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 11 July 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 6 July 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.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 11 July 2025.
Read through reviews of airlines operating flights from Portsmouth to London, such as KLM, Aer Lingus, andeasyJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

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.
KLM
7.8
Good
1,372 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

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.
Aer Lingus
7.1
Good
1,154 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

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.
easyJet
6.9
Okay
1,817 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

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.
British Airways
6.6
Okay
7,109 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

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 Portsmouth to London. 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 Portsmouth to London one-way?

    £58 is the cheapest one-way deal found within the past few days, from easyJet. You may also be able to find cheap deals on Aurigny Air and Aer Lingus, with prices starting from £198 and £260, respectively.

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

    The most popular flight routes from Portsmouth to London are Southampton Eastleigh - London Gatwick, Southampton Eastleigh - London City and Southampton Eastleigh - London Heathrow.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to London 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 Portsmouth to London?

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to London (average of £112). Flying from Portsmouth to London 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

Travelling to a place near Portsmouth?

Book flights to Portsmouth if you plan to visit one of these locations
Hounslow
Croydon
Milton Keynes
Deal
Gatwick
Slough
Luton
Wembley
Crawley
Eastbourne
Ilford
Hayes
Ipswich
Folkestone
Southend-on-Sea
Watford
Winchester
Maidstone
Guildford
Chichester

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Alternative routes for Portsmouth to London

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