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Cheap flights from London to Portsmouth from £71

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — LHR
26 Feb — 5 Mar1
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 21 February 2025.

Round-trip from

£147

One-way from

£71
easyJet
  • easyJet
  • 28/3-31/3
  • 2 total stops
  • 37h 50m total
  • London to Portsmouth
Search Deals
6/4
  • 6/4
  • 1 total stop
  • 4h 15m 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 21 February 2025.

Fri 28/315:20LTN - SOU
1 stop15h 25measyJet
Mon 31/311:50SOU - LTN
1 stop22h 25measyJet
Deal found 20/2£147
Sun 6/407:10STN - SOU
1 stop4h 15mMultiple Airlines
Sun 13/412:00SOU - STN
1 stop20h 05mMultiple Airlines
Deal found 20/2£154
Thu 20/317:50LTN - SOU
1 stop19h 05mMultiple Airlines
Thu 27/319:25SOU - LTN
1 stop22h 30mMultiple Airlines
Deal found 20/2£156
Wed 19/312:45SEN - SOU
1 stop23h 10measyJet
Tue 25/312:00SOU - SEN
1 stop24h 05measyJet
Deal found 21/2£156
Mon 21/418:00STN - SOU
1 stop17h 45measyJet
Mon 28/411:50SOU - STN
1 stop20h 15measyJet
Deal found 20/2£169
Thu 20/312:15LGW - SOU
1 stop24h 40mMultiple Airlines
Thu 27/308:55SOU - LGW
1 stop12h 35mMultiple Airlines
Deal found 20/2£169
Sun 6/408:25LGW - SOU
1 stop7h 40measyJet
Sun 13/416:35SOU - LGW
1 stop15h 45measyJet
Deal found 20/2£184
Tue 2/920:55LHR - SOU
1 stop11h 50mKLM
Sat 6/917:35SOU - LHR
1 stop14h 05mKLM
Deal found 20/2£216
Thu 20/306:45LHR - SOU
1 stop12h 10mMultiple Airlines
Thu 27/308:55SOU - LHR
1 stop12h 25mMultiple Airlines
Deal found 20/2£238
Thu 20/315:10LHR - SOU
1 stop4h 30mAer Lingus
Thu 27/320:10SOU - LHR
1 stop24h 55mAer Lingus
Deal found 20/2£267
Mon 17/318:55LCY - SOU
1 stop13h 30mKLM
Fri 21/317:20SOU - LCY
1 stop14h 50mKLM
Deal found 21/2£269
Wed 19/312:45SEN - SOU
1 stop23h 10mMultiple Airlines
Tue 25/309:30SOU - SEN
3 stops26h 35mMultiple Airlines
Deal found 21/2£285

Find flights from London to Portsmouth within your budget

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 21 February 2025.

Fly from

London

Fly to

Portsmouth

Route

Depart

Return

Price

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Fri 28/3

15:20-06:45

1 stop15h 25m

Southampton Eastleigh

Mon 31/3

11:50-10:15

1 stop22h 25m

£147

LondonSouthampton

STN - SOU

STNSOU

London Stansted

Sun 6/4

07:10-11:25

1 stop4h 15m

Southampton Eastleigh

Sun 13/4

12:00-08:05

1 stop20h 05m

£154

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Thu 20/3

17:50-12:55

1 stop19h 05m

Southampton Eastleigh

Thu 27/3

19:25-17:55

1 stop22h 30m

£156

LondonSouthampton

SEN - SOU

SENSOU

London Southend

Wed 19/3

12:45-11:55

1 stop23h 10m

Southampton Eastleigh

Tue 25/3

12:00-12:05

1 stop24h 05m

£156

LondonSouthampton

STN - SOU

STNSOU

London Stansted

Mon 21/4

18:00-11:45

1 stop17h 45m

Southampton Eastleigh

Mon 28/4

11:50-08:05

1 stop20h 15m

£169

LondonSouthampton

LGW - SOU

LGWSOU

London Gatwick

Thu 20/3

12:15-12:55

1 stop24h 40m

Southampton Eastleigh

Thu 27/3

08:55-21:30

1 stop12h 35m

£169

LondonSouthampton

LGW - SOU

LGWSOU

London Gatwick

Sun 6/4

08:25-16:05

1 stop7h 40m

Southampton Eastleigh

Sun 13/4

16:35-08:20

1 stop15h 45m

£184

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 20/3

06:45-18:55

1 stop12h 10m

Southampton Eastleigh

Thu 27/3

08:55-21:20

1 stop12h 25m

£238

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Sat 22/3

06:30-16:50

1 stop10h 20m

Southampton Eastleigh

Mon 24/3

17:20-20:50

1 stop3h 30m

£239

LondonSouthampton

LHR - SOU

LHRSOU

London Heathrow

Thu 20/3

15:10-19:40

1 stop4h 30m

Southampton Eastleigh

Thu 27/3

20:10-21:05

1 stop24h 55m

£267

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 25 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.

Travel insights for flights from London to Portsmouth

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

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 21 February 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 21 February 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
1,331 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

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

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

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

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

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
1,816 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

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

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

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 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 (£71), Aurigny Air (£162), and British Airways (£214).

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

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

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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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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.

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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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