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Cheap flights from Portsmouth to London from £85

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 24/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LON
27 Feb — 6 Mar1
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 22 February 2025.

Round-trip from

£137

One-way from

£85
easyJet
  • easyJet
  • 22/3-24/3
  • 2 total stops
  • 32h 40m total
  • Portsmouth to London
Search Deals
easyJet
  • easyJet
  • 24/4
  • 1 total stop
  • 5h 45m 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 22 February 2025.

Sat 22/309:40SOU - LTN
1 stop12h 15measyJet
Mon 24/314:25LTN - SOU
1 stop20h 25measyJet
Deal found 21/2£137
Mon 7/415:25SOU - LTN
1 stop6h 40mMultiple Airlines
Mon 14/421:55LTN - SOU
1 stop10h 20mMultiple Airlines
Deal found 21/2£153
Sat 22/316:25SOU - LGW
1 stop15h 10measyJet
Mon 24/320:05LGW - SOU
1 stop14h 45measyJet
Deal found 21/2£169
Sat 8/309:40SOU - STN
2 stops10h 30mMultiple Airlines
Wed 12/305:55STN - SOU
1 stop9h 45mMultiple Airlines
Deal found 20/2£169
Sat 8/308:55SOU - LGW
1 stop6h 40mMultiple Airlines
Wed 12/306:25LGW - SOU
1 stop9h 15mMultiple Airlines
Deal found 20/2£170
Sat 22/317:20SOU - LHR
1 stop3h 30mKLM
Mon 24/320:25LHR - SOU
1 stop12h 00mKLM
Deal found 21/2£191
Mon 7/415:25SOU - LHR
1 stop6h 45mMultiple Airlines
Mon 14/406:30LHR - SOU
1 stop8h 25mMultiple Airlines
Deal found 21/2£194
Mon 7/415:25SOU - LCY
1 stop5h 00mMultiple Airlines
Mon 14/412:25LCY - SOU
1 stop3h 50mMultiple Airlines
Deal found 21/2£263
Sat 8/317:20SOU - LCY
1 stop19h 55mKLM
Wed 12/320:05LCY - SOU
1 stop12h 25mKLM
Deal found 20/2£328
Thu 29/512:30SOU - LHR
1 stop4h 25mBritish Airways
Sun 1/608:50LHR - SOU
1 stop3h 50mBritish Airways
Deal found 21/2£328
Sat 12/709:40SOU - LHR
1 stop6h 15mAer Lingus
Sat 12/720:10LHR - SOU
1 stop12h 25mAer Lingus
Deal found 21/2£453
Mon 7/415:10SOU - LGW
2 stops4h 00mAurigny Air
Mon 14/408:35LGW - SOU
1 stop6h 00mAurigny Air
Deal found 21/2£474

Find flights from Portsmouth to London within your budget

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 22 February 2025.

Fly from

Portsmouth

Fly to

London

Route

Depart

Return

Price

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Sat 22/3

09:40-21:55

1 stop12h 15m

London Luton

Mon 24/3

14:25-10:50

1 stop20h 25m

£137

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Mon 7/4

15:25-22:05

1 stop6h 40m

London Luton

Mon 14/4

21:55-08:15

1 stop10h 20m

£153

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Sat 22/3

16:25-07:35

1 stop15h 10m

London Gatwick

Mon 24/3

20:05-10:50

1 stop14h 45m

£169

SouthamptonLondon

SOU - STN

SOUSTN

Southampton Eastleigh

Sat 8/3

09:40-20:10

2 stops10h 30m

London Stansted

Wed 12/3

05:55-15:40

1 stop9h 45m

£169

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Sat 8/3

08:55-15:35

1 stop6h 40m

London Gatwick

Wed 12/3

06:25-15:40

1 stop9h 15m

£170

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 22/3

17:20-20:50

1 stop3h 30m

London Heathrow

Mon 24/3

20:25-08:25

1 stop12h 00m

£191

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Mon 7/4

15:25-22:10

1 stop6h 45m

London Heathrow

Mon 14/4

06:30-14:55

1 stop8h 25m

£194

SouthamptonLondon

SOU - LCY

SOULCY

Southampton Eastleigh

Mon 7/4

15:25-20:25

1 stop5h 00m

London City

Mon 14/4

12:25-16:15

1 stop3h 50m

£263

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 29/5

12:30-16:55

1 stop4h 25m

London Heathrow

Sun 1/6

08:50-12:40

1 stop3h 50m

£328

SouthamptonLondon

SOU - LCY

SOULCY

Southampton Eastleigh

Sat 8/3

17:20-13:15

1 stop19h 55m

London City

Wed 12/3

20:05-08:30

1 stop12h 25m

£328

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 23 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.

Travel insights for flights from Portsmouth to London

Get recent, data-driven insights about flights from Portsmouth to London including ideal travel times, pricing trends, and more.

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 22 February 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.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 22 February 2025.
To help decide which airline to fly from Portsmouth to London, see what other customers have to say about KLM, Aer Lingus and easyJet. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,331 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,331 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Aer Lingus
7.0
Good
1,070 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

easyJet
6.9
Okay
1,814 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

British Airways
6.6
Okay
6,762 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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?

    £85 is the cheapest one-way deal found within the past few days, from easyJet. You may also be able to find cheap deals on British Airways and Aurigny Air, with prices starting from £164 and £189, respectively.

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

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

  • 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 £163). 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?

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Deal
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Stansted

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