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Cheap flights from Portsmouth to Helsinki from £118

LHR — HEL
26 Sep — 3 Oct1
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

Fri 9/1017:20 -
1 stop17h 45m
Fri 16/1018:25 -
1 stop16h 20m
Deal found 25/8£221
Wed 7/1009:15 -
1 stop6h 25m
Wed 14/1018:25 -
1 stop16h 10m
Deal found 23/8£222
Fri 11/1217:30 -
1 stop17h 40m
Tue 15/1214:05 -
1 stop4h 55m
Deal found 23/8£245
Fri 9/1014:30 -
2 stops18h 45m
Fri 16/1018:35 -
2 stops14h 45m
Deal found 25/8£247
Wed 7/1010:45 -
3 stops20h 45m
Wed 14/1018:50 -
2 stops24h 00m
Deal found 23/8£252
Fri 11/1215:00 -
2 stops17h 10m
Tue 15/1221:30 -
2 stops24h 00m
Deal found 23/8£278

Find flight deals from Portsmouth to Helsinki

Round-trip from

£221

One-way from

£118

Popular in

June

Cheapest in

February

Average price

£231
KLM
  • KLM
  • 9/10-16/10
  • 2 total stops
  • 34h 05m total
  • Portsmouth to Helsinki
Search Deals
15/9
  • 15/9
  • 3 total stops
  • 36h 10m total
  • Portsmouth to Helsinki
Search Deals
Highest demand for flights based on searches. 32% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
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 Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Fri 9/10

17:20-13:05

1 stop17h 45m

Helsinki-Vantaa

Fri 16/10

18:25-08:45

1 stop16h 20m

£221
Fastest return journey

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Fri 11/12

17:30-13:10

1 stop17h 40m

Helsinki-Vantaa

Tue 15/12

14:05-17:00

1 stop4h 55m

£245

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Fri 9/10

14:30-11:15

2 stops18h 45m

Helsinki-Vantaa

Fri 16/10

18:35-07:20

2 stops14h 45m

£247

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Wed 7/10

10:45-09:30

3 stops20h 45m

Helsinki-Vantaa

Wed 14/10

18:50-16:50

2 stops24h 00m

£252

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Fri 11/12

15:00-10:10

2 stops17h 10m

Helsinki-Vantaa

Tue 15/12

21:30-19:30

2 stops24h 00m

£278

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Wed 7/10

17:20-17:40

1 stop22h 20m

Helsinki-Vantaa

Wed 14/10

11:05-08:35

2 stops23h 30m

£296

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Mon 5/10

19:30-23:00

2 stops25h 30m

Helsinki-Vantaa

Wed 7/10

14:05-08:25

2 stops20h 20m

£662
Cheapest one-way
Fastest single journey

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Tue 15/9

20:00-20:35

2 stops22h 35m

£159

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Wed 9/12

08:55-23:05

2 stops36h 10m

£393

SouthamptonHelsinki

SOU Southampton Eastleigh - HEL Helsinki-Vantaa

SOUHEL

Southampton Eastleigh

Thu 10/12

12:35-21:10

2 stops30h 35m

£393

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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

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?

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 29% versus a flight at midday.

Weekly flight availability from Portsmouth to Helsinki

The most flights from P0R to HEL are scheduled on a Monday (27 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

Reviews of airlines servicing Helsinki

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
1,565 reviews
Check prices

Food

7.3

Comfort

7.7

Boarding

7.8

Overall

7.8

Crew

8.4

Entertainment

7.2

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
1,565 reviews
KLM
7.8
Good
1,565 reviews
Check prices

Food

7.3

Comfort

7.7

Boarding

7.8

Overall

7.8

Crew

8.4

Entertainment

7.2

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

  • 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 £221, KLM can have you in Helsinki from Portsmouth in 17h 45m. 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 (82%), Japan Airlines (79%), SriLankan Airlines( 77%).

  • What are the cheapest flights from Portsmouth to Helsinki?

    Looking for the cheapest flight from Portsmouth to Helsinki? While on average our users pay £1,331, our data indicates the cheapest price to be £131. The most popular route (Southampton Eastleigh - Helsinki-Vantaa), is priced around £221.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Portsmouth to Helsinki

AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£51Average£99FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
airBalticCheapest£75Average£138FlexibilityNo cancel feeOn-time87%
Search airBaltic flights
NorwegianCheapest£89Average£221FlexibilityNo cancel feeOn-timeN/A
Search Norwegian flights
NorwegianCheapest£97Average£169FlexibilityNo cancel feeOn-time74%
Search Norwegian flights
Scandinavian AirlinesCheapest£127Average£175FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
FinnairCheapest£139Average£298FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£152Average£260FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£162Average£296FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£184Average£187FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£202Average£396FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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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.

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