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Cheap flights from Portsmouth to London from £59

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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LON
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to London

Keep the following information in mind while searching for Portsmouth to London flight deals. Data was last updated 27 November 2025.

Round-trip from

£112

One-way from

£59
easyJet
  • easyJet
  • 8/1-12/1
  • 2 total stops
  • 22h 00m total
  • Portsmouth to London
Search Deals
easyJet
  • easyJet
  • 15/2
  • 1 total stop
  • 22h 40m total
  • Portsmouth to London
Search Deals

Find flight deals from Portsmouth to London

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to London
Explore the most affordable flight options available from Portsmouth to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 November 2025.

Wed 10/1208:55SOU - LTN
1 stop9h 05mMultiple Airlines
Sun 14/1209:25LTN - SOU
2 stops23h 20mMultiple Airlines
Deal found 25/11£181
Wed 10/1208:55SOU - LGW
1 stop6h 40mMultiple Airlines
Sun 14/1221:05LGW - SOU
1 stop16h 55mMultiple Airlines
Deal found 25/11£181
Wed 10/1208:55SOU - STN
2 stops24h 15mMultiple Airlines
Sun 14/1206:45STN - SOU
2 stops26h 00mMultiple Airlines
Deal found 25/11£181
Wed 10/1209:25SOU - LTN
1 stop12h 35measyJet
Sun 14/1208:25LTN - SOU
1 stop9h 20measyJet
Deal found 25/11£184
Wed 24/1208:45SOU - LGW
1 stop6h 40mMultiple Airlines
Wed 31/1221:40LGW - SOU
2 stops19h 40mMultiple Airlines
Deal found 26/11£223
Tue 23/1220:10SOU - STN
1 stop13h 40mMultiple Airlines
Sun 28/1221:45STN - SOU
1 stop11h 00mMultiple Airlines
Deal found 26/11£224
Tue 23/1220:10SOU - LGW
1 stop12h 10mMultiple Airlines
Sun 28/1220:10LGW - SOU
1 stop12h 35mMultiple Airlines
Deal found 26/11£227
Wed 24/1209:25SOU - LGW
1 stop8h 50measyJet
Wed 31/1220:10LGW - SOU
1 stop17h 25measyJet
Deal found 26/11£239
Wed 24/1208:40SOU - LHR
1 stop5h 10mKLM
Wed 31/1220:25LHR - SOU
1 stop11h 55mKLM
Deal found 26/11£271
Wed 24/1212:25SOU - LHR
1 stop7h 25mAer Lingus
Wed 31/1207:50LHR - SOU
1 stop7h 45mAer Lingus
Deal found 26/11£289
Tue 23/1209:20SOU - LTN
1 stop12h 30measyJet
Sun 28/1220:15LTN - SOU
1 stop11h 40measyJet
Deal found 26/11£302
Wed 24/1212:25SOU - LHR
1 stop7h 25mMultiple Airlines
Wed 31/1219:45LHR - SOU
2 stops21h 40mMultiple Airlines
Deal found 26/11£316

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to London 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 27 November 2025.
Use the filters below to find and compare flights from Portsmouth to London that are best for you.

Fly from

Portsmouth

Fly to

London

Route

Depart

Return

Price

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Thu 8/1

17:55-08:15

1 stop14h 20m

London Luton

Mon 12/1

06:20-14:00

1 stop7h 40m

£112

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Thu 8/1

17:55-22:10

1 stop4h 15m

London Gatwick

Mon 12/1

09:40-15:35

1 stop5h 55m

£129

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Sat 10/1

15:45-08:55

1 stop17h 10m

London Gatwick

Sat 17/1

08:30-14:50

1 stop6h 20m

£133

SouthamptonLondon

SOU - STN

SOUSTN

Southampton Eastleigh

Sat 10/1

09:30-20:05

1 stop10h 35m

London Stansted

Sat 17/1

18:45-08:45

1 stop14h 00m

£142

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Sat 10/1

09:30-15:25

1 stop5h 55m

London Luton

Sat 17/1

21:00-08:45

1 stop11h 45m

£144

SouthamptonLondon

SOU - STN

SOUSTN

Southampton Eastleigh

Thu 8/1

12:20-19:50

1 stop7h 30m

London Stansted

Mon 12/1

13:30-19:40

1 stop6h 10m

£151

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Thu 8/1

12:20-20:05

1 stop7h 45m

London Luton

Mon 12/1

21:55-14:50

2 stops16h 55m

£152

SouthamptonLondon

SOU - LTN

SOULTN

Southampton Eastleigh

Wed 10/12

08:55-18:00

1 stop9h 05m

London Luton

Sun 14/12

09:25-08:45

2 stops23h 20m

£181

SouthamptonLondon

SOU - LGW

SOULGW

Southampton Eastleigh

Wed 10/12

08:55-15:35

1 stop6h 40m

London Gatwick

Sun 14/12

21:05-14:00

1 stop16h 55m

£181

SouthamptonLondon

SOU - STN

SOUSTN

Southampton Eastleigh

Wed 10/12

08:55-09:10

2 stops24h 15m

London Stansted

Sun 14/12

06:45-08:45

2 stops26h 00m

£181

Flights are sorted by cheapest return flights first.

Deals found on 26/11

Showing 1-10 of 46 results
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Best time to book a flight from Portsmouth to London

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

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

Find hourly flight availability from Portsmouth to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 November 2025.

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

What is the cheapest day to fly from Portsmouth to London?

Use this chart to determine the cheapest time to fly return from Portsmouth to London. Price data was last updated on 25 November 2025.

Travellers seeking maximum savings on their Portsmouth to London flight should consider departing on Monday mornings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portsmouth to London?

    There are many flights that can get you from Portsmouth to London in 5h 10m. Fly via easyJet, Aer Lingus, or KLM to get the fastest option. The distance between Portsmouth and London is about 53 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Portsmouth to London one-way?

    £59 is the cheapest one-way deal found within the past few days, from easyJet. You may also be able to find cheap deals on Aer Lingus and Aurigny Air, with prices starting from £100 and £145, respectively.

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

    The most popular flight routes from Portsmouth to London are Southampton Eastleigh - London Gatwick, Southampton Eastleigh - London Heathrow and Southampton Eastleigh - London City.

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

    Yes. In addition to deals on Portsmouth to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to London.

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

    Yes. Cheapflights offers flight deals from Portsmouth to London 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Slough
Croydon
Hounslow
Gatwick
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
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Winchester
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Romford
Chichester
Bedford
Guildford
Ipswich

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Alternative routes for Portsmouth to London

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How does Cheapflights help users find flights from Portsmouth to London?

When you search for this flight from Portsmouth to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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