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Cheap flights from Portsmouth to Helsinki from £333

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HEL
1 Feb — 8 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Helsinki

Enter your travel dates to find the best prices.

Best flights from Portsmouth to Helsinki
Discover carefully curated flight deals from Portsmouth to Helsinki that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 January 2026.

Sat 14/209:25SOU - HEL
1 stop12h 40mKLM
Sat 21/218:20HEL - SOU
1 stop16h 30mKLM
Deal found 31/12£333
Sat 14/209:30SOU - HEL
2 stops23h 35mMultiple Airlines
Sat 21/218:20HEL - SOU
1 stop16h 30mMultiple Airlines
Deal found 31/12£390
Wed 4/312:00SOU - HEL
1 stop8h 45mBritish Airways
Sun 8/307:50HEL - SOU
2 stops11h 55mBritish Airways
Deal found 31/12£520
Wed 1/419:55SOU - HEL
1 stop15h 05mMultiple Airlines
Wed 15/406:50HEL - SOU
1 stop9h 55mMultiple Airlines
Deal found 31/12£428
Thu 29/115:00SOU - HEL
1 stop5h 45mMultiple Airlines
Thu 12/206:35HEL - SOU
1 stop11h 30mMultiple Airlines
Deal found 1/1£465
Wed 1/718:20SOU - HEL
1 stop18h 25mMultiple Airlines
Wed 15/708:20HEL - SOU
1 stop14h 25mMultiple Airlines
Deal found 31/12£470
Wed 28/109:25SOU - HEL
2 stops8h 55mMultiple Airlines
Wed 11/207:00HEL - SOU
2 stops12h 05mMultiple Airlines
Deal found 31/12£496
Thu 2/419:55SOU - HEL
1 stop15h 05mMultiple Airlines
Thu 16/416:05HEL - SOU
1 stop6h 40mMultiple Airlines
Deal found 1/1£508

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 2 January 2026.

Round-trip from

£333

Popular in

July

Cheapest in

February

Average price

£70
KLM
  • KLM
  • 14/2-21/2
  • 2 total stops
  • 29h 10m total
  • Portsmouth to Helsinki
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 2 January 2026.
Use the filters below to find and compare flights from Portsmouth to Helsinki that are best for you.

Fly from

Portsmouth

Fly to

Helsinki

Route

Depart

Return

Price

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Sat 14/2

09:25-00:05

1 stop12h 40m

Helsinki-Vantaa

Sat 21/2

18:20-08:50

1 stop16h 30m

£333

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Sat 14/2

09:30-11:05

2 stops23h 35m

Helsinki-Vantaa

Sat 21/2

18:20-08:50

1 stop16h 30m

£390

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Wed 1/4

19:55-13:00

1 stop15h 05m

Helsinki-Vantaa

Wed 15/4

06:50-14:45

1 stop9h 55m

£428

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 29/1

15:00-22:45

1 stop5h 45m

Helsinki-Vantaa

Thu 12/2

06:35-16:05

1 stop11h 30m

£465

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Wed 1/7

18:20-14:45

1 stop18h 25m

Helsinki-Vantaa

Wed 15/7

08:20-20:45

1 stop14h 25m

£470

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Wed 28/1

09:25-20:20

2 stops8h 55m

Helsinki-Vantaa

Wed 11/2

07:00-17:05

2 stops12h 05m

£496

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 2/4

19:55-13:00

1 stop15h 05m

Helsinki-Vantaa

Thu 16/4

16:05-20:45

1 stop6h 40m

£508

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Wed 4/3

12:00-22:45

1 stop8h 45m

Helsinki-Vantaa

Sun 8/3

07:50-17:45

2 stops11h 55m

£520

Flights are sorted by cheapest return flights first.

Deals found on 31/12

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 month to book a flight from Portsmouth to Helsinki?

Currently, March is the cheapest month in which you can book a flight from Portsmouth to Helsinki (average of £34). Flying from Portsmouth to Helsinki in July is currently the most expensive (average of £102). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 2 January 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Helsinki as you normally would.

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 2 January 2026.

The most flights from P0R to HEL are scheduled on a Thursday (29 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (20 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 2 January 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
7.7
Good
1,435 reviews
Check prices

Boarding

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Food

7.2

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,435 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Boarding

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

Food

7.2

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 7 different airlines.

  • How long is the flight from Portsmouth to Helsinki?

    For as low as £333, KLM can have you in Helsinki from Portsmouth in 12h 40m. 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: Vietnam Airlines (80%), LATAM Airlines (77%), Japan Airlines( 75%).

  • What are the cheapest flights from Portsmouth to Helsinki?

    Looking for the cheapest flight from Portsmouth to Helsinki? While on average our users pay £1,180, our data indicates the cheapest price to be £126. The most popular route (Southampton Eastleigh - Helsinki-Vantaa), is priced around £239.

  • 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.

  • What is the cheapest month to book a flight from Portsmouth to Helsinki?

    Currently, March is the cheapest month in which you can book a flight from Portsmouth to Helsinki (average of £34). Flying from Portsmouth to Helsinki in July is currently the most expensive (average of £102). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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Alternative routes for Portsmouth to Helsinki

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Top 7 airlines flying from Portsmouth to Helsinki

Discover the top 7 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 2 January 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£47Average£130FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
NorwegianCheapest£60Average£159FlexibilityNo cancel feeOn-time74%
Search Norwegian flights
Scandinavian AirlinesCheapest£125Average£155FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
KLMCheapest£136Average£209FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£136Average£247FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£150Average£399FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£162Average£239FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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