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Cheap flights from London to Portsmouth from £78

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — LHR
22 Apr — 29 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 17 April 2025.

Round-trip from

£118

One-way from

£78
17/5-20/5
  • 17/5-20/5
  • 2 total stops
  • 31h 10m total
  • London to Portsmouth
Search Deals
easyJet
  • easyJet
  • 10/5
  • 1 total stop
  • 27h 35m 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 17 April 2025.

Sat 17/522:00STN - SOU
1 stop10h 35mMultiple Airlines
Tue 20/520:00SOU - STN
1 stop20h 35mMultiple Airlines
Deal found 16/4£118
Sat 17/508:50LGW - SOU
1 stop23h 45mMultiple Airlines
Tue 20/520:00SOU - LGW
1 stop19h 10mMultiple Airlines
Deal found 16/4£126
Sat 17/522:10LTN - SOU
1 stop10h 25mMultiple Airlines
Tue 20/512:25SOU - LTN
1 stop9h 40mMultiple Airlines
Deal found 17/4£140
Sat 31/513:50LTN - SOU
1 stop21h 35measyJet
Sat 7/608:25SOU - LTN
1 stop7h 55measyJet
Deal found 16/4£195
Sat 17/519:40LHR - SOU
1 stop12h 55mAer Lingus
Tue 20/509:10SOU - LHR
1 stop4h 45mAer Lingus
Deal found 16/4£216
Wed 14/520:55LHR - SOU
1 stop11h 50mKLM
Wed 21/509:20SOU - LHR
1 stop6h 55mKLM
Deal found 16/4£267
Fri 2/515:05LHR - SOU
1 stop3h 50mMultiple Airlines
Fri 30/516:45SOU - LHR
1 stop4h 40mMultiple Airlines
Deal found 16/4£268
Sat 17/510:00LCY - SOU
1 stop7h 30mKLM
Tue 20/517:35SOU - LCY
1 stop13h 40mKLM
Deal found 17/4£287
Sat 31/507:30LHR - SOU
1 stop10h 05mBritish Airways
Fri 6/616:45SOU - LHR
1 stop4h 40mBritish Airways
Deal found 16/4£318
Mon 5/513:40LCY - SOU
1 stop5h 50mAer Lingus
Fri 9/508:55SOU - LCY
1 stop7h 05mAer Lingus
Deal found 15/4£435
Wed 30/412:25LCY - SOU
1 stop3h 50mBritish Airways
Wed 7/516:30SOU - LCY
1 stop4h 15mBritish Airways
Deal found 16/4£467
Thu 1/513:55SEN - SOU
1 stop18h 50mMultiple Airlines
Mon 5/512:10SOU - SEN
1 stop7h 25mMultiple Airlines
Deal found 16/4£507

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 17 April 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

STN - SOU

STNSOU

London Stansted

Sat 17/5

22:00-08:35

1 stop10h 35m

Southampton Eastleigh

Tue 20/5

20:00-16:35

1 stop20h 35m

£118

LondonSouthampton

LGW - SOU

LGWSOU

London Gatwick

Sat 17/5

08:50-08:35

1 stop23h 45m

Southampton Eastleigh

Tue 20/5

20:00-15:10

1 stop19h 10m

£126

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Sat 17/5

22:10-08:35

1 stop10h 25m

Southampton Eastleigh

Tue 20/5

12:25-22:05

1 stop9h 40m

£140

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Sat 31/5

13:50-11:25

1 stop21h 35m

Southampton Eastleigh

Sat 7/6

08:25-16:20

1 stop7h 55m

£195

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 17/5

19:40-08:35

1 stop12h 55m

Southampton Eastleigh

Tue 20/5

09:10-13:55

1 stop4h 45m

£216

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Wed 14/5

20:55-08:45

1 stop11h 50m

Southampton Eastleigh

Wed 21/5

09:20-16:15

1 stop6h 55m

£267

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Fri 2/5

15:05-18:55

1 stop3h 50m

Southampton Eastleigh

Fri 30/5

16:45-21:25

1 stop4h 40m

£268

LondonSouthampton

LCY - SOU

LCYSOU

London City

Sat 17/5

10:00-17:30

1 stop7h 30m

Southampton Eastleigh

Tue 20/5

17:35-07:15

1 stop13h 40m

£287

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 31/5

07:30-17:35

1 stop10h 05m

Southampton Eastleigh

Fri 6/6

16:45-21:25

1 stop4h 40m

£318

LondonSouthampton

LCY - SOU

LCYSOU

London City

Mon 5/5

13:40-19:30

1 stop5h 50m

Southampton Eastleigh

Fri 9/5

08:55-16:00

1 stop7h 05m

£435

Flights are sorted by cheapest return flights first.

Deals found on 16/4

Showing 1-10 of 26 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 17 April 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 17 April 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
1,327 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

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
1,327 reviews
KLM
7.8
Good
1,327 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

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
1,063 reviews
KLM
7.8
Good
1,327 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

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
1,796 reviews
KLM
7.8
Good
1,327 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

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
6,767 reviews
KLM
7.8
Good
1,327 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

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 (£78), Aer Lingus (£133), and British Airways (£185).

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

    While some choose either London Heathrow - Southampton Eastleigh or London City - Southampton Eastleigh, London Gatwick - 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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