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Cheap flights from Portsmouth to London from £65

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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LON
18 Jun — 25 Jun1
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 13 June 2025.

Round-trip from

£156

One-way from

£65
26/7-28/7
  • 26/7-28/7
  • 2 total stops
  • 39h 05m total
  • Portsmouth to London
Search Deals
easyJet
  • easyJet
  • 12/7
  • 1 total stop
  • 24h 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 13 June 2025.

Sat 26/708:05SOU - STN
1 stop12h 50mMultiple Airlines
Mon 28/706:25STN - SOU
1 stop26h 15mMultiple Airlines
Deal found 10/6£156
Sat 26/708:05SOU - LTN
1 stop24h 05mMultiple Airlines
Mon 28/721:55LTN - SOU
1 stop10h 45mMultiple Airlines
Deal found 10/6£169
Sat 26/708:25SOU - LGW
2 stops25h 00mMultiple Airlines
Mon 28/721:30LGW - SOU
1 stop11h 10mMultiple Airlines
Deal found 10/6£192
Tue 22/709:20SOU - LHR
1 stop10h 05mKLM
Tue 29/706:30LHR - SOU
1 stop11h 20mKLM
Deal found 11/6£227
Wed 15/1009:20SOU - LCY
1 stop8h 00mKLM
Wed 22/1007:45LCY - SOU
1 stop9h 15mKLM
Deal found 12/6£233
Sat 26/708:25SOU - LGW
1 stop9h 20measyJet
Sat 2/818:20LGW - SOU
1 stop26h 40measyJet
Deal found 11/6£255
Sat 26/718:50SOU - LGW
1 stop13h 05mAurigny Air
Mon 28/718:25LGW - SOU
1 stop13h 05mAurigny Air
Deal found 9/6£364
Sat 13/908:55SOU - LHR
1 stop11h 25mBritish Airways
Sat 20/919:20LHR - SOU
1 stop13h 05mBritish Airways
Deal found 11/6£369
Tue 15/716:30SOU - LCY
1 stop4h 15mBritish Airways
Thu 14/812:25LCY - SOU
1 stop3h 50mBritish Airways
Deal found 12/6£564

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 13 June 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

Sat 26/7

08:05-20:55

1 stop12h 50m

London Stansted

Mon 28/7

06:25-08:40

1 stop26h 15m

£156

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Sat 26/7

08:05-08:10

1 stop24h 05m

London Luton

Mon 28/7

21:55-08:40

1 stop10h 45m

£169

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Sat 26/7

08:25-09:25

2 stops25h 00m

London Gatwick

Mon 28/7

21:30-08:40

1 stop11h 10m

£192

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Mon 28/7

20:30-08:35

1 stop12h 05m

London Gatwick

Mon 4/8

06:15-11:50

1 stop5h 35m

£201

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 22/7

09:20-19:25

1 stop10h 05m

London Heathrow

Tue 29/7

06:30-17:50

1 stop11h 20m

£227

SouthamptonLondon

SOU - LCY

SOULCY

Southampton Eastleigh

Wed 15/10

09:20-17:20

1 stop8h 00m

London City

Wed 22/10

07:45-17:00

1 stop9h 15m

£233

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Wed 15/10

19:50-11:20

1 stop15h 30m

London Gatwick

Wed 22/10

11:55-19:05

1 stop7h 10m

£283

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 13/9

08:55-20:20

1 stop11h 25m

London Heathrow

Sat 20/9

19:20-08:25

1 stop13h 05m

£369

SouthamptonLondon

SOU - LCY

SOULCY

Southampton Eastleigh

Tue 15/7

16:30-20:45

1 stop4h 15m

London City

Thu 14/8

12:25-16:15

1 stop3h 50m

£564

SouthamptonLondon

SOU - STN

SOUSTN

Southampton Eastleigh

Sat 12/7

08:05-08:20

1 stop24h 15m

£65

Flights are sorted by cheapest return flights first.

Deals found on 10/6

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.

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 13 June 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 8 June 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.

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 13 June 2025.
To help decide which airline to fly from Portsmouth to London, see what other customers have to say about KLM, easyJet and British Airways. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Entertainment

7.1

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Entertainment

7.1

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
easyJet
6.9
Okay
1,812 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Entertainment

7.1

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
British Airways
6.6
Okay
7,011 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Entertainment

7.1

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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?

    £65 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 £194 and £199, respectively.

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

    The most popular flight routes from Portsmouth to London are Southampton Eastleigh - London Heathrow, Southampton Eastleigh - London City 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 £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
Deal
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Croydon
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Gatwick
Luton
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Crawley
Eastbourne
Ilford
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Watford
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Winchester
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Dartford
Guildford

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