How long is the flight from London to Portsmouth?

There are many flights that can get you from London to Portsmouth in 4h 40m. Fly via easyJet, Aer Lingus, or KLM to get the fastest option. The distance from London to Portsmouth is about 77 mi. Both multi-stop and direct flights can be found to your destination and back.

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.

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).

What are the most popular routes from London to Portsmouth?

While some choose either London City - Southampton Eastleigh or London Heathrow - 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.

£51+ Cheap Flights from London to Portsmouth

Cheap flight deals from London to Portsmouth

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 August 2026.

Sat 10/1007:50 -

1 stop3h 55m

Sat 17/1012:15 -

1 stop9h 20m

Deal found 27/8£109

Sat 10/1007:05 -

1 stop4h 40m

Sat 17/1012:15 -

1 stop4h 30m

Deal found 26/8£118

Wed 7/1018:20 -

1 stop14h 15m

Wed 14/1010:45 -

1 stop11h 55m

Deal found 23/8£118

Thu 22/1021:55 -

1 stop10h 50m

Mon 26/1017:55 -

1 stop4h 00m

Deal found 25/8£123

Tue 6/1007:10 -

1 stop5h 40m

Tue 13/1013:25 -

1 stop9h 25m

Deal found 27/8£124

Tue 6/1009:40 -

1 stop9h 50m

Tue 13/1018:10 -

1 stop15h 25m

Deal found 27/8£127

Fri 4/1206:00 -

1 stop8h 10m

Mon 7/1219:25 -

1 stop15h 50m

Deal found 25/8£129

Mon 5/1022:25 -

1 stop14h 25m

Mon 12/1012:25 -

1 stop4h 30m

Deal found 23/8£129

Tue 22/919:20 -

1 stop14h 55m

Tue 29/918:10 -

1 stop18h 45m

Deal found 23/8£132

Fri 4/1218:20 -

1 stop13h 25m

Tue 8/1212:25 -

1 stop11h 10m

Deal found 26/8£133

Wed 16/919:20 -

1 stop13h 15m

Sun 27/912:35 -

1 stop19h 35m

Deal found 23/8£134

Mon 21/922:45 -

1 stop9h 55m

Mon 28/920:40 -

1 stop10h 40m

Deal found 24/8£134

Best flights from London to Portsmouth
Discover carefully curated flight deals from London to Portsmouth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Sat 10/1007:50 -

1 stop3h 55m

Sat 17/1012:15 -

1 stop9h 20m

Deal found 27/8£109

Sat 10/1007:05 -

1 stop4h 40m

Sat 17/1012:15 -

1 stop4h 30m

Deal found 27/8£121

Wed 7/1021:10 -

1 stop11h 30m

Wed 14/1009:20 -

1 stop8h 00m

Deal found 23/8£234

Tue 6/1019:15 -

1 stop13h 30m

Tue 13/1017:20 -

1 stop3h 35m

Deal found 24/8£247

Tue 6/1007:10 -

1 stop5h 40m

Tue 13/1013:25 -

1 stop9h 25m

Deal found 24/8£126

Mon 5/1022:25 -

1 stop14h 25m

Mon 12/1012:25 -

1 stop4h 30m

Deal found 23/8£129

Tue 6/1009:40 -

1 stop9h 50m

Tue 13/1018:10 -

1 stop15h 25m

Deal found 27/8£127

Thu 8/1016:25 -

1 stop3h 00m

Thu 15/1008:00 -

1 stop11h 10m

Deal found 25/8£282

Wed 16/919:20 -

1 stop13h 15m

Sun 27/912:35 -

1 stop19h 35m

Deal found 23/8£134

Tue 22/919:20 -

1 stop14h 55m

Tue 29/918:10 -

1 stop18h 45m

Deal found 23/8£132

Fri 4/1218:20 -

1 stop13h 25m

Tue 8/1212:25 -

1 stop11h 10m

Deal found 26/8£133

Wed 7/1019:20 -

1 stop13h 15m

Wed 14/1010:45 -

1 stop7h 45m

Deal found 23/8£153

Sat 26/913:15 -

1 stop6h 15m

Mon 28/920:40 -

1 stop10h 40m

Deal found 26/8£137

Mon 21/908:15 -

1 stop11h 15m

Mon 28/920:00 -

1 stop13h 15m

Deal found 24/8£143

Tue 6/1015:10 -

1 stop4h 20m

Tue 13/1009:15 -

1 stop4h 40m

Deal found 25/8£247

Sat 10/1011:45 -

1 stop21h 00m

Sat 17/1017:20 -

1 stop3h 35m

Deal found 27/8£247

Tue 22/909:40 -

1 stop7h 10m

Tue 29/918:10 -

1 stop15h 25m

Deal found 25/8£144

Mon 21/920:55 -

1 stop11h 40m

Mon 28/917:20 -

1 stop3h 35m

Deal found 24/8£259

Mon 21/915:10 -

1 stop4h 20m

Mon 28/909:20 -

1 stop4h 35m

Deal found 24/8£259

Mon 5/1019:40 -

1 stop11h 50m

Mon 12/1019:55 -

1 stop14h 30m

Deal found 22/8£291

Wed 7/1022:00 -

1 stop10h 40m

Wed 14/1010:45 -

1 stop9h 45m

Deal found 23/8£150

Wed 6/108:40 -

1 stop8h 20m

Wed 13/108:40 -

1 stop10h 55m

Deal found 26/8£259

Sat 3/1019:40 -

1 stop13h 50m

Sat 10/1015:15 -

1 stop3h 55m

Deal found 24/8£297

Thu 22/1009:25 -

1 stop10h 05m

Mon 26/1010:45 -

1 stop11h 25m

Deal found 25/8£158

Fri 9/1018:25 -

1 stop13h 05m

Tue 20/1019:55 -

1 stop14h 30m

Deal found 24/8£297

Fri 18/919:15 -

1 stop13h 30m

Mon 21/917:20 -

1 stop14h 20m

Deal found 25/8£274

Tue 6/1020:35 -

1 stop11h 30m

Tue 13/1013:25 -

2 stops7h 30m

Deal found 27/8£165

Tue 6/1008:30 -

1 stop10h 55m

Tue 13/1008:00 -

1 stop10h 50m

Deal found 22/8£306

Wed 7/1009:20 -

1 stop7h 30m

Wed 14/1009:15 -

1 stop10h 30m

Deal found 23/8£288

Thu 8/1019:20 -

1 stop12h 10m

Thu 15/1008:00 -

1 stop10h 50m

Deal found 26/8£313

Find flight deals from London to Portsmouth

Round-trip from	£109
One-way from	£51

10/10-17/10
2 total stops
13h 15m total
London to Portsmouth

Search Deals

8/10
1 total stop
27h 05m total
London to Portsmouth

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Sat 10/10

07:50-11:45

1 stop3h 55m

Southampton Eastleigh

Sat 17/10

12:15-21:35

1 stop9h 20m

£109

LondonSouthampton

LTN London Luton - SOU Southampton Eastleigh

LTNSOU

London Luton

Sat 10/10

07:05-11:45

1 stop4h 40m

Southampton Eastleigh

Sat 17/10

12:15-16:45

1 stop4h 30m

£121

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Tue 6/10

07:10-12:50

1 stop5h 40m

Southampton Eastleigh

Tue 13/10

13:25-22:50

1 stop9h 25m

£126

LondonSouthampton

LTN London Luton - SOU Southampton Eastleigh

LTNSOU

London Luton

Tue 6/10

09:40-19:30

1 stop9h 50m

Southampton Eastleigh

Tue 13/10

18:10-09:35

1 stop15h 25m

£127

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Mon 5/10

22:25-12:50

1 stop14h 25m

Southampton Eastleigh

Mon 12/10

12:25-16:55

1 stop4h 30m

£129

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Tue 22/9

19:20-10:15

1 stop14h 55m

Southampton Eastleigh

Tue 29/9

18:10-12:55

1 stop18h 45m

£132

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Fri 4/12

18:20-07:45

1 stop13h 25m

Southampton Eastleigh

Tue 8/12

12:25-23:35

1 stop11h 10m

£133

LondonSouthampton

LTN London Luton - SOU Southampton Eastleigh

LTNSOU

London Luton

Wed 16/9

19:20-08:35

1 stop13h 15m

Southampton Eastleigh

Sun 27/9

12:35-08:10

1 stop19h 35m

£134

LondonSouthampton

STN London Stansted - SOU Southampton Eastleigh

STNSOU

London Stansted

Sat 26/9

13:15-19:30

1 stop6h 15m

Southampton Eastleigh

Mon 28/9

20:40-07:20

1 stop10h 40m

£137

LondonSouthampton

LTN London Luton - SOU Southampton Eastleigh

LTNSOU

London Luton

Mon 21/9

08:15-19:30

1 stop11h 15m

Southampton Eastleigh

Mon 28/9

20:00-09:15

1 stop13h 15m

£143

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

LTN-SOU

STN-SOU

LGW-SOU

LHR-SOU

LCY-SOU

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

LON-P0R

LTN-SOU

STN-SOU

LGW-SOU

LHR-SOU

What is the cheapest time of day to fly from LON to P0R?

One of the essential ways to save on airfare from London to Portsmouth is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 39% on airfare.

Related info for your journey

How long is the flight from London to Portsmouth?
There are many flights that can get you from London to Portsmouth in 4h 40m. Fly via easyJet, Aer Lingus, or KLM to get the fastest option. The distance from London to Portsmouth is about 77 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from London to Portsmouth?
While some choose either London City - Southampton Eastleigh or London Heathrow - 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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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Cheap flights from London to Portsmouth from £51

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Portsmouth

Cheapest flights from London to PortsmouthExplore 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 August 2026.

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 August 2026.

Best flights from London to PortsmouthDiscover carefully curated flight deals from London to Portsmouth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Discover carefully curated flight deals from London to Portsmouth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Last-minute flights from London to PortsmouthDiscover last-minute flight deals from London to Portsmouth. Data last updated 27 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Portsmouth. Data last updated 27 August 2026 and is based on user searches.

One-way flights from London to PortsmouthSearch for one-way flight options from London to Portsmouth. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

Search for one-way flight options from London to Portsmouth. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

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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.

Cheapflights Insights

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 August 2026.

One of the essential ways to save on airfare from London to Portsmouth is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 39% on airfare.

Related info for your journey

How long is the flight from London to Portsmouth?

What are the most popular routes from London to Portsmouth?

Can I find deals for flights from London to Portsmouth that include hotel bookings?

How can I find direct flights from London to Portsmouth?

Can I find deals for business class flights from London to Portsmouth?

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

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Direct flights to England

Book a non-stop flight to one of these other cities located in England.

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London and Portsmouth flights

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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 August 2026.

Best flights from London to Portsmouth
Discover carefully curated flight deals from London to Portsmouth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Last-minute flights from London to Portsmouth
Discover last-minute flight deals from London to Portsmouth. Data last updated 27 August 2026 and is based on user searches.

One-way flights from London to Portsmouth
Search for one-way flight options from London to Portsmouth. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.