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Cheap flights from Portsmouth to Helsinki from £244

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 17/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HEL
19 Jul — 26 Jul1
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 19 June 2026.

Tue 14/718:05
SOU
-
HEL
1 stop17h 00m
KLM
Sun 19/713:55
HEL
-
SOU
1 stop20h 50m
KLM
Deal found 15/6£325
Sat 1/817:30
SOU
-
HEL
1 stop4h 55m
KLM
Sat 8/818:25
HEL
-
SOU
1 stop16h 20m
KLM
Deal found 17/6£351
Thu 16/718:05
SOU
-
HEL
2 stops23h 05m
KLM
Sun 19/713:55
HEL
-
SOU
1 stop20h 50m
KLM
Deal found 19/6£356
Tue 14/720:00
SOU
-
HEL
3 stops35h 30m
Multiple Airlines
Sun 19/723:25
HEL
-
SOU
2 stops22h 05m
Multiple Airlines
Deal found 15/6£376
Sat 1/807:50
SOU
-
HEL
2 stops14h 45m
Multiple Airlines
Sat 8/816:00
HEL
-
SOU
2 stops18h 35m
Multiple Airlines
Deal found 17/6£394
Thu 16/717:20
SOU
-
HEL
2 stops20h 00m
Multiple Airlines
Sun 19/713:55
HEL
-
SOU
2 stops31h 35m
Multiple Airlines
Deal found 19/6£395

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 19 June 2026.

Round-trip from

£325

One-way from

£244

Popular in

June

Cheapest in

February

Average price

£275
KLM
  • KLM
  • 14/7-19/7
  • 2 total stops
  • 37h 50m total
  • Portsmouth to Helsinki
Search Deals
17/7
  • 17/7
  • 3 total stops
  • 35h 25m total
  • Portsmouth to Helsinki
Search Deals
Highest demand for flights based on searches. 34% potential increase in price (£64 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 June 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 19 June 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

Thu 16/7

18:05-19:10

2 stops23h 05m

Helsinki-Vantaa

Sun 19/7

13:55-08:45

1 stop20h 50m

£356

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 16/7

17:20-15:20

2 stops20h 00m

Helsinki-Vantaa

Sun 19/7

13:55-19:30

2 stops31h 35m

£395

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Sat 1/8

19:40-22:40

2 stops25h 00m

Helsinki-Vantaa

Sat 8/8

15:05-07:55

1 stop18h 50m

£404

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Tue 14/7

20:00-14:40

1 stop16h 40m

Helsinki-Vantaa

Sun 19/7

18:25-09:25

2 stops17h 00m

£407

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Mon 14/12

12:35-22:50

1 stop8h 15m

Helsinki-Vantaa

Mon 28/12

08:05-20:45

1 stop14h 40m

£572
Fastest return journey

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Fri 14/8

06:45-22:35

1 stop13h 50m

Helsinki-Vantaa

Wed 19/8

08:20-12:55

1 stop6h 35m

£580

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 17/9

06:45-22:35

1 stop13h 50m

Helsinki-Vantaa

Thu 1/10

16:00-08:25

2 stops18h 25m

£592
Cheapest one-way

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Fri 17/7

20:10-09:35

3 stops35h 25m

£244

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 17/9

06:45-22:35

1 stop13h 50m

£300

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Tue 22/9

15:15-13:00

1 stop19h 45m

£340

Flights are sorted by cheapest return flights first.

Deals found on 15/6

Showing 1-10 of 12 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
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 19 June 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 19 June 2026.

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 (21 on average).

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 £356, KLM can have you in Helsinki from Portsmouth in 23h 05m. 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: LATAM Airlines (90%), Malaysia Airlines (88%), Japan Airlines( 87%).

  • What are the cheapest flights from Portsmouth to Helsinki?

    Looking for the cheapest flight from Portsmouth to Helsinki? While on average our users pay £1,217, our data indicates the cheapest price to be £137. The most popular route (Southampton Eastleigh - Helsinki-Vantaa), is priced around £351.

  • 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 19 June 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£55Average£111FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
airBalticCheapest£77Average£208FlexibilityNo cancel feeOn-time87%
Search airBaltic flights
NorwegianCheapest£92Average£219FlexibilityNo cancel feeOn-timeN/A
Search Norwegian flights
NorwegianCheapest£96Average£184FlexibilityNo cancel feeOn-time74%
Search Norwegian flights
Scandinavian AirlinesCheapest£130Average£167FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
FinnairCheapest£131Average£280FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£156Average£267FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£161Average£407FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£167Average£243FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£190Average£193FlexibilityNo 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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