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Cheap flights from Portsmouth to Helsinki from £137

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HEL
12 Aug — 19 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Helsinki

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Helsinki
Explore the most affordable flight options available from Portsmouth to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 July 2026.

Tue 25/818:05
SOU
-
HEL
1 stop17h 00m
KLM
Tue 1/918:25
HEL
-
SOU
1 stop16h 20m
KLM
Deal found 11/7£216
Tue 15/920:00
SOU
-
HEL
2 stops18h 55m
Multiple Airlines
Fri 18/918:35
HEL
-
SOU
2 stops14h 45m
Multiple Airlines
Deal found 8/7£228
Tue 15/909:05
SOU
-
HEL
1 stop6h 35m
KLM
Fri 18/918:25
HEL
-
SOU
1 stop16h 20m
KLM
Deal found 8/7£245
Tue 25/814:15
SOU
-
HEL
1 stop22h 55m
Multiple Airlines
Tue 1/923:55
HEL
-
SOU
2 stops34h 40m
Multiple Airlines
Deal found 11/7£271
Fri 7/809:15
SOU
-
HEL
1 stop13h 10m
Multiple Airlines
Thu 13/820:30
HEL
-
SOU
2 stops14h 10m
Multiple Airlines
Deal found 9/7£316
Thu 20/815:25
SOU
-
HEL
1 stop18h 10m
Multiple Airlines
Tue 25/807:15
HEL
-
SOU
2 stops14h 15m
Multiple Airlines
Deal found 11/7£317

Find flight deals from Portsmouth to Helsinki

Keep the following information in mind while searching for Portsmouth to Helsinki flight deals. Data was last updated 13 July 2026.

Round-trip from

£216

One-way from

£137

Popular in

June

Cheapest in

February

Average price

£266
KLM
  • KLM
  • 25/8-1/9
  • 2 total stops
  • 33h 20m total
  • Portsmouth to Helsinki
Search Deals
20/8
  • 20/8
  • 1 total stop
  • 18h 10m total
  • Portsmouth to Helsinki
Search Deals
Highest demand for flights based on searches. 34% potential increase in price (£63 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Helsinki 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 13 July 2026.
Use the filters below to find and compare flights from Portsmouth to Helsinki that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Tue 15/9

20:00-16:55

2 stops18h 55m

Helsinki-Vantaa

Fri 18/9

18:35-07:20

2 stops14h 45m

£228
Fastest return journey

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Tue 15/9

09:05-17:40

1 stop6h 35m

Helsinki-Vantaa

Fri 18/9

18:25-08:45

1 stop16h 20m

£245

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Tue 25/8

14:15-15:10

1 stop22h 55m

Helsinki-Vantaa

Tue 1/9

23:55-08:35

2 stops34h 40m

£271

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Fri 7/8

20:00-00:25

2 stops26h 25m

Helsinki-Vantaa

Thu 13/8

21:10-19:40

2 stops24h 30m

£316

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 20/8

15:25-11:35

1 stop18h 10m

Helsinki-Vantaa

Tue 25/8

07:15-19:30

2 stops14h 15m

£317
Cheapest one-way

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 20/8

15:25-11:35

1 stop18h 10m

£137

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Wed 29/7

20:00-23:05

1 stop25h 05m

£184
Fastest single journey

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Fri 31/7

20:10-14:50

2 stops16h 40m

£224

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Tue 1/12

09:20-07:20

2 stops44h 00m

£968

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 30/7

09:20-08:20

2 stops45h 00m

£1,016

Flights are sorted by cheapest return flights first.

Deals found on 11/7

Sorted by cheapest first

Best time to book a flight from Portsmouth to Helsinki

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

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

Find hourly flight availability from Portsmouth to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 July 2026.

When flying from Portsmouth to Helsinki, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 34% versus a flight at midday.

Weekly flight availability from Portsmouth to Helsinki

Explore weekly flight availability from Portsmouth to Helsinki. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 July 2026.

The most flights from P0R to HEL are scheduled on a Sunday (28 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (27 on average).

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. 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 Helsinki. Reviews last updated 13 July 2026.
Check out reviews from past customers who have flown with KLM from Portsmouth to Helsinki to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,538 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.3

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,538 reviews
KLM
7.8
Good
1,538 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.3

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

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

  • What airport do you fly into for flights to Helsinki from Portsmouth?

    If you book a flight to Helsinki from Portsmouth, you will be flying to Helsinki-Vantaa, which is the city’s only airport. Helsinki-Vantaa (HEL) is located 10.6 mi from the center of Helsinki. There are 0 flights from Portsmouth to Helsinki-Vantaa per day from 10 different airlines.

  • How long is the flight from Portsmouth to Helsinki?

    For as low as £245, KLM can have you in Helsinki from Portsmouth in 6h 35m. There are 1200 mi between Portsmouth and Helsinki.

  • What are the most reliable airlines from Portsmouth to Helsinki?

    Before booking your flight to Helsinki from Portsmouth, check out the most reliable airlines to get you to your destination on time: Malaysia Airlines (84%), LATAM Airlines (80%), Japan Airlines( 79%).

  • What are the cheapest flights from Portsmouth to Helsinki?

    Looking for the cheapest flight from Portsmouth to Helsinki? While on average our users pay £1,396, our data indicates the cheapest price to be £136. The most popular route (Southampton Eastleigh - Helsinki-Vantaa), is priced around £216.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Helsinki 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 Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
Espoo
Vantaa

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Top 10 airlines flying from Portsmouth to Helsinki

Discover the top 10 airlines that operate flights from Portsmouth to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 July 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£53Average£107FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
airBalticCheapest£76Average£206FlexibilityNo cancel feeOn-time87%
Search airBaltic flights
NorwegianCheapest£91Average£218FlexibilityNo cancel feeOn-timeN/A
Search Norwegian flights
NorwegianCheapest£95Average£183FlexibilityNo cancel feeOn-time74%
Search Norwegian flights
Scandinavian AirlinesCheapest£128Average£167FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
FinnairCheapest£132Average£281FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£154Average£261FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£159Average£449FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£165Average£240FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£187Average£190FlexibilityNo cancel feeOn-time77%
Search Air France flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Portsmouth to Helsinki via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Helsinki?

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 from Portsmouth to Helsinki.

Can Cheapflights find flights from Portsmouth to Helsinki with no change fees?

Certainly. Search results for flights to Helsinki from Portsmouth 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 Portsmouth to Helsinki become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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