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£54+ 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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
6 Sep — 13 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2026

Enter your travel dates to find the best prices.

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 7 August 2026.

Wed 9/918:20 -
1 stop14h 15m
Wed 16/910:45 -
1 stop11h 55m
Deal found 3/8£106
Sat 26/919:35 -
1 stop13h 50m
Mon 28/919:20 -
1 stop12h 10m
Deal found 5/8£110
Tue 22/919:20 -
1 stop14h 55m
Sun 27/912:35 -
1 stop8h 20m
Deal found 6/8£111
Wed 9/916:05 -
1 stop16h 30m
Wed 16/910:45 -
1 stop12h 05m
Deal found 3/8£121
Tue 22/919:50 -
2 stops14h 25m
Sun 27/912:35 -
1 stop10h 45m
Deal found 5/8£122
Fri 11/918:30 -
1 stop12h 50m
Mon 14/920:40 -
2 stops21h 00m
Deal found 4/8£123
Sat 26/921:25 -
1 stop11h 10m
Mon 28/919:20 -
1 stop15h 40m
Deal found 5/8£126
Wed 9/921:50 -
1 stop10h 45m
Wed 16/910:45 -
2 stops22h 35m
Deal found 4/8£128
Sat 26/918:45 -
1 stop13h 50m
Mon 28/919:20 -
1 stop14h 10m
Deal found 6/8£131
Wed 2/911:50 -
1 stop20h 45m
Wed 9/908:55 -
1 stop5h 00m
Deal found 5/8£135
Tue 22/918:20 -
2 stops15h 55m
Sun 27/912:35 -
1 stop10h 00m
Deal found 5/8£137
Wed 9/921:50 -
1 stop10h 45m
Wed 16/910:45 -
1 stop5h 35m
Deal found 4/8£141

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2026, 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 7 August 2026.

One-way from

£54
16/9
  • 16/9
  • 1 total stop
  • 20h 45m total
  • London to Portsmouth
Search Deals

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 7 August 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Wed 9/9

18:20-08:35

1 stop14h 15m

Southampton Eastleigh

Wed 16/9

10:45-22:40

1 stop11h 55m

£106

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Fri 11/9

19:15-07:20

1 stop12h 05m

Southampton Eastleigh

Mon 14/9

20:40-07:20

1 stop10h 40m

£108

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Sat 26/9

19:35-09:25

1 stop13h 50m

Southampton Eastleigh

Mon 28/9

19:20-07:30

1 stop12h 10m

£110

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Sat 26/9

19:35-09:25

1 stop13h 50m

Southampton Eastleigh

Fri 2/10

14:30-22:35

1 stop8h 05m

£111

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Tue 22/9

19:20-10:15

1 stop14h 55m

Southampton Eastleigh

Sun 27/9

12:35-20:55

1 stop8h 20m

£114

LondonSouthampton

LTN London Luton - SOU Southampton Eastleigh

LTNSOU

London Luton

Wed 9/9

16:05-08:35

1 stop16h 30m

Southampton Eastleigh

Wed 16/9

10:45-22:50

1 stop12h 05m

£123

LondonSouthampton

LTN London Luton - SOU Southampton Eastleigh

LTNSOU

London Luton

Sat 26/9

21:25-08:35

1 stop11h 10m

Southampton Eastleigh

Mon 28/9

19:20-11:00

1 stop15h 40m

£126

LondonSouthampton

LGW London Gatwick - SOU Southampton Eastleigh

LGWSOU

London Gatwick

Wed 9/9

21:50-08:35

1 stop10h 45m

Southampton Eastleigh

Wed 16/9

10:45-09:20

2 stops22h 35m

£128

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Sun 20/9

22:00-08:40

1 stop10h 40m

Southampton Eastleigh

Sun 27/9

12:35-20:55

1 stop8h 20m

£133

LondonSouthampton

LTN London Luton - SOU Southampton Eastleigh

LTNSOU

London Luton

Wed 2/9

11:50-08:35

1 stop20h 45m

Southampton Eastleigh

Wed 9/9

08:55-13:55

1 stop5h 00m

£135

Flights are sorted by cheapest return flights first.

Deals found on 2/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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 7 hours 8 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, easyJet 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 £46, however they can be found for as little as £30.

  • 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 is the closest property to London Heathrow (0.0 mi away from London Heathrow).

See more FAQs

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How does Cheapflights help users find flights to Portsmouth?

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Portsmouth.

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Users can book flights with no change fees policies with our dedicated filters. Book flights to Portsmouth flexibly with Cheapflights today.

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