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Cheap flights from London to Portsmouth from £93

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — LHR
1 Apr — 8 Apr1
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 27 March 2025.

Round-trip from

£122

One-way from

£93
17/5-19/5
  • 17/5-19/5
  • 2 total stops
  • 35h 10m total
  • London to Portsmouth
Search Deals
8/4
  • 8/4
  • 1 total stop
  • 21h 40m total
  • London to Portsmouth
Search Deals

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 27 March 2025.

Sat 17/520:20LGW - SOU
1 stop12h 15mMultiple Airlines
Mon 19/508:05SOU - LGW
1 stop22h 55mMultiple Airlines
Deal found 26/3£122
Sat 17/512:15STN - SOU
1 stop23h 10mMultiple Airlines
Mon 19/520:00SOU - STN
1 stop14h 15mMultiple Airlines
Deal found 25/3£126
Sat 17/508:00LTN - SOU
1 stop9h 30measyJet
Mon 19/515:25SOU - LTN
1 stop6h 40measyJet
Deal found 25/3£134
Sat 17/522:10LTN - SOU
1 stop10h 25mMultiple Airlines
Mon 19/515:25SOU - LTN
1 stop6h 40mMultiple Airlines
Deal found 26/3£136
Sat 17/507:50STN - SOU
1 stop27h 35measyJet
Mon 19/511:50SOU - STN
1 stop20h 15measyJet
Deal found 25/3£138
Sat 17/518:35LGW - SOU
1 stop16h 50measyJet
Mon 19/515:25SOU - LGW
1 stop16h 55measyJet
Deal found 25/3£153
Sat 17/521:10LHR - SOU
1 stop11h 25mAer Lingus
Mon 19/520:00SOU - LHR
1 stop12h 00mAer Lingus
Deal found 25/3£203
Fri 9/514:20LHR - SOU
1 stop5h 10mMultiple Airlines
Fri 16/519:25SOU - LHR
1 stop18h 50mMultiple Airlines
Deal found 25/3£213
Thu 15/520:55LHR - SOU
1 stop11h 50mKLM
Mon 19/509:20SOU - LHR
1 stop8h 15mKLM
Deal found 25/3£226
Sat 17/510:00LCY - SOU
1 stop7h 30mKLM
Mon 19/509:20SOU - LCY
1 stop7h 20mKLM
Deal found 25/3£270
Thu 11/908:30LCY - SOU
1 stop10h 05mAurigny Air
Sun 28/914:30SOU - LCY
1 stop4h 20mAurigny Air
Deal found 25/3£342
Wed 9/415:00LHR - SOU
1 stop4h 10mBritish Airways
Wed 16/412:30SOU - LHR
1 stop4h 25mBritish Airways
Deal found 26/3£411

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 27 March 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

LGW - SOU

LGWSOU

London Gatwick

Sat 17/5

20:20-08:35

1 stop12h 15m

Southampton Eastleigh

Mon 19/5

08:05-07:00

1 stop22h 55m

£122

LondonSouthampton

STN - SOU

STNSOU

London Stansted

Sat 17/5

12:15-11:25

1 stop23h 10m

Southampton Eastleigh

Mon 19/5

20:00-10:15

1 stop14h 15m

£126

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Sat 17/5

08:00-17:30

1 stop9h 30m

Southampton Eastleigh

Mon 19/5

15:25-22:05

1 stop6h 40m

£134

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Sat 17/5

22:10-08:35

1 stop10h 25m

Southampton Eastleigh

Mon 19/5

15:25-22:05

1 stop6h 40m

£136

LondonSouthampton

STN - SOU

STNSOU

London Stansted

Sat 17/5

07:50-11:25

1 stop27h 35m

Southampton Eastleigh

Mon 19/5

11:50-08:05

1 stop20h 15m

£138

LondonSouthampton

LGW - SOU

LGWSOU

London Gatwick

Sat 17/5

18:35-11:25

1 stop16h 50m

Southampton Eastleigh

Mon 19/5

15:25-08:20

1 stop16h 55m

£153

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 17/5

21:10-08:35

1 stop11h 25m

Southampton Eastleigh

Mon 19/5

20:00-08:00

1 stop12h 00m

£203

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 9/5

14:20-19:30

1 stop5h 10m

Southampton Eastleigh

Fri 16/5

19:25-14:15

1 stop18h 50m

£213

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 15/5

20:55-08:45

1 stop11h 50m

Southampton Eastleigh

Mon 19/5

09:20-17:35

1 stop8h 15m

£226

LondonSouthampton

LCY - SOU

LCYSOU

London City

Sat 17/5

10:00-17:30

1 stop7h 30m

Southampton Eastleigh

Mon 19/5

09:20-16:40

1 stop7h 20m

£270

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 22 results
1
2
3

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 27 March 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.

Rainfall in Portsmouth by month

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

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 inches per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

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

If weather is an important factor for your trip to Portsmouth, 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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

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 27 March 2025.
See what other customers who have flown with KLM, Aer Lingus and easyJet from London to Portsmouth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,319 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,319 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Aer Lingus
7.0
Good
1,062 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
easyJet
6.9
Okay
1,792 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
British Airways
6.6
Okay
6,712 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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 (£108), Aer Lingus (£114), and British Airways (£191).

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

    While some choose either London City - Southampton Eastleigh or London Gatwick - Southampton Eastleigh, London Heathrow - Southampton Eastleigh is the most popular route 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from London to Portsmouth

Discover the top airline that operate flights from London to Portsmouth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 March 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£205Average£333FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Portsmouth?

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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