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Cheap flights from Portsmouth to Helsinki from £245

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HEL
1 Sep — 8 Sep1
1 adult

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 27 August 2025.

Round-trip from

£245

Popular in

July

Cheapest in

November

Average price

£183
KLM
  • KLM
  • 12/1-15/1
  • 2 total stops
  • 10h 55m total
  • Portsmouth to Helsinki
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£31 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Portsmouth to Helsinki

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 27 August 2025.

Thu 18/917:35SOU - HEL
1 stop4h 45mKLM
Sat 20/918:25HEL - SOU
1 stop16h 20mKLM
Deal found 27/8£281
Sat 20/1216:45SOU - HEL
2 stops26h 25mBritish Airways
Tue 23/1208:00HEL - SOU
1 stop27h 35mBritish Airways
Deal found 25/8£780
Tue 16/908:30SOU - HEL
2 stops10h 30mBritish Airways
Sun 21/908:00HEL - SOU
2 stops9h 30mBritish Airways
Deal found 26/8£839
Wed 17/908:30SOU - HEL
2 stops10h 30mBritish Airways
Sun 21/908:00HEL - SOU
2 stops9h 30mBritish Airways
Deal found 26/8£908
Thu 18/908:40SOU - HEL
2 stops10h 20mBritish Airways
Sun 21/908:00HEL - SOU
2 stops9h 30mBritish Airways
Deal found 26/8£983
Tue 16/908:30SOU - HEL
2 stops10h 30mBritish Airways
Fri 19/906:50HEL - SOU
1 stop7h 10mBritish Airways
Deal found 26/8£1,070
Wed 17/908:55SOU - HEL
2 stops10h 05mBritish Airways
Fri 19/906:50HEL - SOU
1 stop7h 10mBritish Airways
Deal found 26/8£1,101
Thu 18/908:40SOU - HEL
2 stops10h 20mBritish Airways
Fri 19/906:50HEL - SOU
1 stop7h 10mBritish Airways
Deal found 26/8£1,214

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 27 August 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 12/1

09:25-17:25

1 stop6h 00m

Helsinki-Vantaa

Thu 15/1

14:05-17:00

1 stop4h 55m

£245

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Thu 18/9

17:35-00:20

1 stop4h 45m

Helsinki-Vantaa

Sat 20/9

18:25-08:45

1 stop16h 20m

£281

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Mon 12/1

17:30-15:25

2 stops19h 55m

Helsinki-Vantaa

Thu 15/1

11:20-17:00

2 stops7h 40m

£447

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Mon 12/1

06:40-23:10

1 stop14h 30m

Helsinki-Vantaa

Thu 15/1

19:35-12:35

2 stops19h 00m

£550

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Sun 11/1

14:45-14:45

1 stop22h 00m

Helsinki-Vantaa

Thu 15/1

19:35-12:35

2 stops19h 00m

£564

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Tue 13/1

18:10-22:50

1 stop26h 40m

Helsinki-Vantaa

Thu 15/1

19:35-12:35

2 stops19h 00m

£564

SouthamptonHelsinki

SOU - HEL

SOUHEL

Southampton Eastleigh

Mon 12/1

19:40-15:15

2 stops17h 35m

Helsinki-Vantaa

Wed 14/1

08:00-17:35

1 stop11h 35m

£586

Flights are sorted by cheapest return flights first.

Deals found on 26/8

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, November is the cheapest month in which you can book a flight from Portsmouth to Helsinki (average of £92). Flying from Portsmouth to Helsinki in July is currently the most expensive (average of £305). 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 27 August 2025.

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.

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 6 October 2024.

Travellers seeking maximum savings on their Portsmouth to Helsinki flight should consider departing on Saturday mornings when fares are most often at their lowest. Saturday mornings 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 27 August 2025.

The most flights from P0R to HEL are scheduled on a Monday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (32 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 27 August 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
7.8
Good
1,384 reviews
Check prices

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,384 reviews
KLM
7.8
Good
1,384 reviews
Check prices

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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 9 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. 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 (76%), Malaysia Airlines (76%), SriLankan Airlines( 73%).

  • What are the cheapest flights from Portsmouth to Helsinki?

    Looking for the cheapest flight from Portsmouth to Helsinki? While on average our users pay £1,051, our data indicates the cheapest price to be £131. The most popular route (Southampton Eastleigh - Helsinki-Vantaa), is priced around £202.

  • 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, November is the cheapest month in which you can book a flight from Portsmouth to Helsinki (average of £92). Flying from Portsmouth to Helsinki in July is currently the most expensive (average of £305). 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 9 airlines flying from Portsmouth to Helsinki

Discover the top 9 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 27 August 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£42Average£107FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
airBalticCheapest£44Average£99FlexibilityNo cancel feeOn-time87%
Search airBaltic flights
RyanairCheapest£47Average£141FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
NorwegianCheapest£78Average£157FlexibilityNo cancel feeOn-time74%
Search Norwegian flights
Scandinavian AirlinesCheapest£123Average£153FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
KLMCheapest£135Average£239FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£141Average£243FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£150Average£427FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£162Average£241FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

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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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