£61+ Cheap flights to Portsmouth

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 20/10. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Flights to Portsmouth in 2025

Find the latest flights to Portsmouth in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 17 September 2025.

One-way from

£61
20/10
  • 20/10
  • 1 total stop
  • 10h 20m total
  • London to Portsmouth

Find flight deals to Portsmouth

Cheapest flights to Portsmouth
Explore the most affordable flight options available to Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on 17 September 2025.

Sat 4/1008:40STN - SOU
1 stop6h 10mMultiple Airlines
Sat 11/1015:20SOU - STN
1 stop5h 35mMultiple Airlines
Deal found 16/9£144
Mon 13/1008:00LTN - SOU
1 stop7h 15mMultiple Airlines
Mon 20/1020:30SOU - LTN
1 stop12h 15mMultiple Airlines
Deal found 15/9£146
Mon 13/1006:15LGW - SOU
1 stop5h 05measyJet
Mon 20/1020:30SOU - LGW
1 stop12h 05measyJet
Deal found 15/9£147
Thu 2/1008:30STN - SOU
1 stop5h 50measyJet
Wed 8/1009:00SOU - STN
1 stop12h 35measyJet
Deal found 16/9£149
Wed 29/1008:50LGW - SOU
1 stop6h 45mMultiple Airlines
Wed 5/1108:55SOU - LGW
1 stop6h 40mMultiple Airlines
Deal found 14/9£150
Thu 2/1019:40LGW - SOU
1 stop23h 15mMultiple Airlines
Wed 8/1009:00SOU - LGW
1 stop8h 35mMultiple Airlines
Deal found 15/9£153
Mon 13/1008:30STN - SOU
1 stop6h 45mMultiple Airlines
Mon 20/1020:30SOU - STN
2 stops15h 55mMultiple Airlines
Deal found 15/9£155
Sat 4/1007:05LTN - SOU
1 stop7h 45mMultiple Airlines
Sat 11/1008:55SOU - LTN
1 stop7h 50mMultiple Airlines
Deal found 16/9£157
Fri 31/1020:10LGW - SOU
1 stop12h 35mMultiple Airlines
Fri 7/1119:50SOU - LGW
1 stop16h 15mMultiple Airlines
Deal found 16/9£157
Thu 2/1021:10LTN - SOU
1 stop11h 30mMultiple Airlines
Wed 8/1009:00SOU - LTN
1 stop13h 55mMultiple Airlines
Deal found 15/9£160
Fri 26/906:20LGW - SOU
1 stop5h 35mMultiple Airlines
Mon 29/908:05SOU - LGW
1 stop22h 55mMultiple Airlines
Deal found 15/9£161
Fri 31/1020:55LTN - SOU
1 stop11h 50mMultiple Airlines
Fri 7/1119:50SOU - LTN
2 stops16h 05mMultiple Airlines
Deal found 16/9£169

Cheapflights Fare Finder

 
Locate flights to Portsmouth that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 17 September 2025.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonSouthampton

STN - SOU

STNSOU

London Stansted

Sat 4/10

08:40-14:50

1 stop6h 10m

Southampton Eastleigh

Sat 11/10

15:20-20:55

1 stop5h 35m

£144

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Mon 13/10

08:00-15:15

1 stop7h 15m

Southampton Eastleigh

Mon 20/10

20:30-08:45

1 stop12h 15m

£146

LondonSouthampton

LGW - SOU

LGWSOU

London Gatwick

Mon 13/10

06:15-11:20

1 stop5h 05m

Southampton Eastleigh

Mon 20/10

20:30-08:35

1 stop12h 05m

£147

LondonSouthampton

STN - SOU

STNSOU

London Stansted

Thu 2/10

08:30-14:20

1 stop5h 50m

Southampton Eastleigh

Wed 8/10

09:00-21:35

1 stop12h 35m

£149

LondonSouthampton

LGW - SOU

LGWSOU

London Gatwick

Wed 29/10

08:50-15:35

1 stop6h 45m

Southampton Eastleigh

Wed 5/11

08:55-15:35

1 stop6h 40m

£150

LondonSouthampton

LGW - SOU

LGWSOU

London Gatwick

Thu 2/10

19:40-18:55

1 stop23h 15m

Southampton Eastleigh

Wed 8/10

09:00-17:35

1 stop8h 35m

£153

LondonSouthampton

STN - SOU

STNSOU

London Stansted

Mon 13/10

08:30-15:15

1 stop6h 45m

Southampton Eastleigh

Mon 20/10

20:30-12:25

2 stops15h 55m

£155

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Sat 4/10

07:05-14:50

1 stop7h 45m

Southampton Eastleigh

Sat 11/10

08:55-16:45

1 stop7h 50m

£157

LondonSouthampton

LGW - SOU

LGWSOU

London Gatwick

Fri 31/10

20:10-08:45

1 stop12h 35m

Southampton Eastleigh

Fri 7/11

19:50-12:05

1 stop16h 15m

£157

LondonSouthampton

LTN - SOU

LTNSOU

London Luton

Thu 2/10

21:10-08:40

1 stop11h 30m

Southampton Eastleigh

Wed 8/10

09:00-22:55

1 stop13h 55m

£164

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 49 results
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Best time to book a flight to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to 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 to Portsmouth

How long is the flight to Portsmouth?

On average, a flight from London to Portsmouth takes 5 hours 50 minutes. Flights to Portsmouth from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

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).

FAQs about flying to Portsmouth

Getting around Portsmouth

The are several excellent local bus services which cover the city centre, Portsea Island, Southsea and numerous destinations in and around the city.  There are good local taxi firms, and you’ll also find licensed taxis at the airport and in the city centre which can simply be flagged down on the street.

Getting from the Airport to the City

Travellers booking flights to Portsmouth will most likely fly to Southampton Airport (SOU), which is the closest airport to the city, just 20 miles (32 km) from the centre of Portsmouth.  Take the train from Southampton Airport Parkway and change to a Portsmouth bound service at Southampton Central or at Eastleigh.  There are also taxis available from outside the terminal, and set fares to the city are not overly expensive.

  • Can I find cheaper flights to Portsmouth if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Portsmouth?

    Based on reviews from Cheapflights users, Ryanair is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a return flight to Portsmouth?

    A return flight to Portsmouth will typically cost around £109, however they can be found for as little as £43.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Manchester offers the quickest one-way flight (0 hours 50 minutes).

  • Does London Heathrow have car hire?

    Yes. Those touching down at London Heathrow can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aerotel London Heathrow T2 & T3 is the closest property to London Heathrow (0.0 mi away from London Heathrow).

See more FAQs

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