Find flights
When to book
Airlines
FAQs

Cheap flights from Portsmouth to Helsinki from £244

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HEL
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 31 October 2025.

Mon 15/1218:05SOU - HEL
1 stop17h 05mKLM
Mon 22/1218:20HEL - SOU
1 stop15h 50mKLM
Deal found 31/10£244
Sat 6/1217:30SOU - HEL
1 stop17h 40mKLM
Sun 7/1218:20HEL - SOU
1 stop15h 50mKLM
Deal found 29/10£250
Mon 15/1208:30SOU - HEL
2 stops26h 10mMultiple Airlines
Mon 22/1218:20HEL - SOU
1 stop15h 50mMultiple Airlines
Deal found 31/10£301
Sat 6/1209:30SOU - HEL
2 stops12h 35mMultiple Airlines
Sun 7/1221:10HEL - SOU
2 stops24h 10mMultiple Airlines
Deal found 29/10£328

Cheap flight deals from Portsmouth to Helsinki

Keep the following information in mind while searching for Portsmouth to Helsinki flight deals. Data was last updated 31 October 2025.

Round-trip from

£244

Popular in

July

Cheapest in

January

Average price

£165
KLM
  • KLM
  • 15/12-22/12
  • 2 total stops
  • 32h 55m total
  • Portsmouth to Helsinki
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£31 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 October 2025
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 31 October 2025.
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

Mon 15/12

18:05-13:10

1 stop17h 05m

Helsinki-Vantaa

Mon 22/12

18:20-08:10

1 stop15h 50m

£244

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Sat 6/12

17:30-13:10

1 stop17h 40m

Helsinki-Vantaa

Sun 7/12

18:20-08:10

1 stop15h 50m

£250

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Mon 15/12

08:30-12:40

2 stops26h 10m

Helsinki-Vantaa

Mon 22/12

18:20-08:10

1 stop15h 50m

£301

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Sat 6/12

09:30-00:05

2 stops12h 35m

Helsinki-Vantaa

Sun 7/12

21:10-19:20

2 stops24h 10m

£328

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Mon 30/3

17:35-00:20

1 stop4h 45m

Helsinki-Vantaa

Tue 31/3

18:25-08:50

1 stop16h 25m

£430

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 4/12

14:35-22:45

1 stop6h 10m

£351

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Fri 5/12

13:30-23:05

1 stop7h 35m

£395

Flights are sorted by cheapest return flights first.

Deals found on 29/10

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 £30). Flying from Portsmouth to Helsinki in July is currently the most expensive (average of £105). 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 31 October 2025.

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 36% versus a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly return from Portsmouth to Helsinki. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Helsinki flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 31 October 2025.

The most flights from P0R to HEL are scheduled on a Monday (29 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (18 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 31 October 2025.
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
1,406 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,406 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 8 different airlines.

  • How long is the flight from Portsmouth to Helsinki?

    For as low as £244, KLM can have you in Helsinki from Portsmouth in 17h 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: Malaysia Airlines (73%), LATAM Airlines (71%), SriLankan Airlines( 70%).

  • What are the cheapest flights from Portsmouth to Helsinki?

    Looking for the cheapest flight from Portsmouth to Helsinki? While on average our users pay £1,022, our data indicates the cheapest price to be £122. The most popular route (Southampton Eastleigh - Helsinki-Vantaa), is priced around £250.

  • 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 £30). Flying from Portsmouth to Helsinki in July is currently the most expensive (average of £105). 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
Vantaa
Espoo

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portsmouth to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Helsinki flights
Gatwick to Helsinki flights
London City to Helsinki flights
Stansted to Helsinki flights
Stansted to Rovaniemi flights
Luton to Helsinki flights
Heathrow to Rovaniemi flights
Manchester to Helsinki flights
Gatwick to Rovaniemi flights
Heathrow to Kittilä flights
Luton to Rovaniemi flights
Birmingham to Rovaniemi flights
Manchester to Rovaniemi flights
Edinburgh to Helsinki flights
Southend to Helsinki flights
Heathrow to Ivalo flights
Birmingham to Helsinki flights
Gatwick to Kittilä flights
Manchester to Kittilä flights
Leeds to Helsinki flights
Bristol to Helsinki flights
Edinburgh to Rovaniemi flights
Gatwick to Ivalo flights
Heathrow to Turku flights
Stansted to Turku flights
Liverpool to Helsinki flights
Heathrow to Oulu flights
Gatwick to Tampere flights
Heathrow to Tampere flights
Southampton to Helsinki flights
Heathrow to Kemi flights
Manchester to Turku flights
Stansted to Tampere flights
Manchester to Tampere flights
Manchester to Kajaani flights
Luton to Tampere flights
Heathrow to Kokkola flights
Doncaster to Helsinki flights
Heathrow to Jyväskylä flights
Gatwick to Oulu flights
Exeter to Helsinki flights
Birmingham to Turku flights
Luton to Oulu flights
Gatwick to Kokkola flights
East Midlands to Helsinki flights
Edinburgh to Tampere flights
Bristol to Turku flights

Top 8 airlines flying from Portsmouth to Helsinki

Discover the top 8 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 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£43Average£109FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
RyanairCheapest£48Average£140FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
NorwegianCheapest£61Average£163FlexibilityNo cancel feeOn-time74%
Search Norwegian flights
Scandinavian AirlinesCheapest£126Average£157FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
KLMCheapest£139Average£201FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£141Average£248FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£153Average£433FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£167Average£242FlexibilityNo 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.