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Cheap flights from Portsmouth to London from £79

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 17/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LON
26 Jan — 2 Feb1
1 adult

Cheap flight deals from Portsmouth to London

Discover tips and strategies to find the most affordable flight options for your journey from Portsmouth (P0R) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 January 2025.

Round-trip from

£117

One-way from

£79
easyJet
  • easyJet
  • 21/3-26/3
  • 2 total stops
  • 10h 45m total
  • Portsmouth to London
Search Deals
17/3
  • 17/3
  • 1 total stop
  • 22h 15m 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 21 January 2025.

Fri 21/313:30SOU - LTN
1 stop3h 45measyJet
Wed 26/308:40LTN - SOU
1 stop7h 00measyJet
Deal found 20/1£117
Mon 24/312:25SOU - STN
1 stop7h 15measyJet
Wed 26/307:50STN - SOU
1 stop7h 50measyJet
Deal found 20/1£122
Thu 13/308:55SOU - LTN
1 stop13h 15mMultiple Airlines
Mon 17/317:35LTN - SOU
1 stop17h 15mMultiple Airlines
Deal found 20/1£136
Mon 24/312:25SOU - LGW
1 stop9h 50measyJet
Wed 26/308:35LGW - SOU
1 stop7h 05measyJet
Deal found 20/1£145
Thu 13/308:55SOU - STN
1 stop8h 10mMultiple Airlines
Mon 17/307:50STN - SOU
1 stop4h 05mMultiple Airlines
Deal found 21/1£148
Tue 18/219:25SOU - LGW
1 stop12h 35mMultiple Airlines
Tue 25/218:40LGW - SOU
1 stop13h 45mMultiple Airlines
Deal found 21/1£152
Thu 6/317:20SOU - LHR
1 stop3h 30mKLM
Thu 13/320:25LHR - SOU
1 stop12h 00mKLM
Deal found 19/1£179
Thu 13/316:05SOU - LCY
1 stop4h 35mMultiple Airlines
Mon 17/308:50LCY - SOU
1 stop6h 20mMultiple Airlines
Deal found 20/1£229
Sun 6/408:55SOU - LHR
1 stop5h 35mMultiple Airlines
Thu 10/414:20LHR - SOU
1 stop5h 10mMultiple Airlines
Deal found 20/1£234
Tue 18/209:00SOU - LCY
1 stop9h 25mKLM
Tue 25/220:05LCY - SOU
1 stop12h 20mKLM
Deal found 21/1£246
Thu 13/316:05SOU - LHR
1 stop5h 00mAer Lingus
Mon 17/320:45LHR - SOU
1 stop12h 00mAer Lingus
Deal found 20/1£263
Mon 24/308:10SOU - LCY
1 stop23h 50mAurigny Air
Wed 26/308:30LCY - SOU
1 stop23h 10mAurigny Air
Deal found 20/1£296

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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Fri 21/3

13:30-17:15

1 stop3h 45m

London Luton

Wed 26/3

08:40-15:40

1 stop7h 00m

£117

SouthamptonLondon

SOU - STN

SOUSTN

Southampton Eastleigh

Mon 24/3

12:25-19:40

1 stop7h 15m

London Stansted

Wed 26/3

07:50-15:40

1 stop7h 50m

£122

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Thu 13/3

08:55-22:10

1 stop13h 15m

London Luton

Mon 17/3

17:35-10:50

1 stop17h 15m

£136

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Mon 24/3

12:25-22:15

1 stop9h 50m

London Gatwick

Wed 26/3

08:35-15:40

1 stop7h 05m

£145

SouthamptonLondon

SOU - STN

SOUSTN

Southampton Eastleigh

Thu 13/3

08:55-17:05

1 stop8h 10m

London Stansted

Mon 17/3

07:50-11:55

1 stop4h 05m

£148

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Tue 18/2

19:25-08:00

1 stop12h 35m

London Gatwick

Tue 25/2

18:40-08:25

1 stop13h 45m

£152

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 6/3

17:20-20:50

1 stop3h 30m

London Heathrow

Thu 13/3

20:25-08:25

1 stop12h 00m

£179

SouthamptonLondon

SOU - LCY

SOULCY

Southampton Eastleigh

Thu 13/3

16:05-20:40

1 stop4h 35m

London City

Mon 17/3

08:50-15:10

1 stop6h 20m

£229

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sun 6/4

08:55-14:30

1 stop5h 35m

London Heathrow

Thu 10/4

14:20-19:30

1 stop5h 10m

£234

SouthamptonLondon

SOU - LCY

SOULCY

Southampton Eastleigh

Tue 18/2

09:00-18:25

1 stop9h 25m

London City

Tue 25/2

20:05-08:25

1 stop12h 20m

£246

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 26 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 21 January 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 21 January 2025.
To help decide which airline to fly from Portsmouth to London, see what other customers have to say about KLM, British Airways 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
1,341 reviews
Check prices

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 10

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
1,341 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 10

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
7.1
Good
1,082 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 10

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
1,859 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 10

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
6,834 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 10

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?

    £84 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 £142 and £153, 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 Luton and Southampton Eastleigh - London Stansted.

  • 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 £161). 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
Deal
Hounslow
Gatwick
Croydon
Milton Keynes
Slough
Luton
Ilford
Hayes
Eastbourne
Maidstone
Crawley
Winchester
Southend-on-Sea
Wembley
Ipswich
Watford
Southall
Stansted
Sutton

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Alternative routes for Portsmouth to London

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