LON - HEL

£31 Find Cheap Flights from London to Helsinki

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Helsinki departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Helsinki

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Helsinki.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Helsinki.
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Cheap Flight Deals from London to Helsinki (LON-HEL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Helsinki that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from London to Helsinki

KAYAK's recommended return flight deals from the most popular airlines that fly from London to Helsinki.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Ryanair Logo
07:50 - 12:40STN-HEL
2h 50mdirect
Ryanair Logo
22:50 - 23:50HEL-STN
3h 00mdirect
£52Ryanair
Find Deal
Tue, 3 Jun - Wed, 18 Jun
Ryanair Logo
07:35 - 12:25STN-HEL
2h 50mdirect
Ryanair Logo
22:50 - 23:50HEL-STN
3h 00mdirect
£52Ryanair
Find Deal
Thu, 12 Jun - Wed, 18 Jun
Norwegian Logo
19:55 - 09:30LGW-HEL
11h 35m1 stop
Norwegian Logo
07:05 - 09:50HEL-LGW
4h 45m1 stop
£87Norwegian
Find Deal
Wed, 7 May - Wed, 14 May
Norwegian Logo
13:10 - 18:20LGW-HEL
27h 10m1 stop
Norwegian Logo
18:50 - 10:20HEL-LGW
17h 30m1 stop
£91Norwegian
Find Deal
Tue, 13 May - Mon, 19 May
airBaltic Logo
17:25 - 08:20LGW-HEL
12h 55m1 stop
airBaltic Logo
05:35 - 08:15HEL-LGW
4h 40m1 stop
£117airBaltic
Find Deal
Mon, 8 Sep - Fri, 12 Sep
Scandinavian Airlines Logo
21:05 - 09:40LHR-HEL
10h 35m1 stop
Scandinavian Airlines Logo
10:20 - 12:55HEL-LHR
4h 35m1 stop
£128Scandinavian Airlines
Find Deal
Wed, 4 Jun - Wed, 11 Jun
Scandinavian Airlines Logo
09:55 - 20:25LHR-HEL
8h 30m1 stop
Scandinavian Airlines Logo
07:15 - 12:55HEL-LHR
7h 40m1 stop
£129Scandinavian Airlines
Find Deal
Thu, 15 May - Tue, 10 Jun
airBaltic Logo
17:20 - 00:20LGW-HEL
5h 00m1 stop
airBaltic Logo
09:00 - 08:15HEL-LGW
25h 15m1 stop
£176airBaltic
Find Deal
Fri, 9 May - Sun, 11 May
Finnair Logo
07:30 - 12:20LHR-HEL
2h 50mdirect
Finnair Logo
08:00 - 09:10HEL-LHR
3h 10mdirect
£201Finnair
Find Deal
Thu, 12 Jun - Wed, 18 Jun
Finnair Logo
07:30 - 12:20LHR-HEL
2h 50mdirect
Finnair Logo
19:30 - 20:40HEL-LHR
3h 10mdirect
£202Finnair
Find Deal
Thu, 5 Jun - Thu, 12 Jun

Expert advice for your flight from London to Helsinki

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are specific to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Ryanair

Stick to cabin baggage dimensions to avoid hefty fees at the gate.


Avoid priority boarding; it often means waiting in cramped conditions.

Read more about Ryanairby Duncan Madden
Finnair

Finnair's A350 offers a quieter cabin with higher humidity for a comfortable journey.


Enjoy Nordic-inspired meals and unique cocktails in business class.

Read more about Finnairby Gabriel Leigh
Our travel experts
Duncan Madden

Duncan Madden

Expert on Ryanair

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more

KAYAK's insights & trends for London to Helsinki flights

Get data-powered insights and trends into flights from London to Helsinki to help you find the cheapest flights, the best time to fly and much more.
Find cheap flights to Helsinki
Find cheap flights to Helsinki

Planning a trip from London to Helsinki? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What is the cheapest London to Helsinki flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London to Helsinki.
Our data shows that the cheapest route for a return flight from London to Helsinki cost £48 and was between London Stansted Airport (STN) and Helsinki (HEL). On average, the best prices are found if you fly this route. The average price for a return flight for this route is £48.

What’s the cheapest day of the week to fly from London to Helsinki?

The average price of all round-trip flights from London to Helsinki clicked on KAYAK for each day over the last 12 months.
For London to Helsinki, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Helsinki back to London, the best deals are generally found on Wednesday, with Tuesday being the most expensive.

What is the cheapest month to fly from London to Helsinki?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Helsinki, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London to Helsinki is November, where tickets cost £62 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £224 and £201 respectively.

Can I save money by flying with a stopover from London to Helsinki?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of £568, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from London to Helsinki?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Helsinki, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from London to Helsinki, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know - Cheap tickets from London to Helsinki

Low season

March

High season

November

Cheapest flight

£31
Best time to beat the crowds (31% less expensive on average)
Most popular time to fly and prices are also 59% lower on average.
Flight from London Stansted Airport to Helsinki

When to book flights from London to Helsinki

Are your dates flexible? Find out the best times to travel from London to Helsinki based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Helsinki

  • Where can I purchase euros at Helsinki-Vantaa Airport?

    ChangeGroup at Helsinki-Vantaa Airport is well positioned to take care of your currency exchange needs, offering seven different locations, including one in Arrivals Hall 2A. ChangeGroup also offers an online service where you can purchase in advance and then pick up upon arrival and is open every day from 05:45 to 21:00 local time.

  • Are there good retail choices at Helsinki-Vantaa Airport?

    Yes, there are. In addition to luxury brands like Salvatore Ferragamo, Max Mara and Bulgari ,there are also several Helsinki Duty Free shops to buy tobacco, spirits or confectionery, Finefood to purchase some Finnish delicacies and the Helsinki Arrival Shop is there for arriving passengers who need to pick up any additional items.

  • How do I get downtown from Helsinki-Vantaa Airport?

    There are good public transport links from the airport, such as the Finnair City Bus, which will connect you to Helsinki Central Railway Station and the Ring Rail Line that services the airport and the city centre. There are also plenty of taxis outside the terminal, which can make the trip in about 30 mins or, as always, you can hire a car and drive yourself.

  • Where is there to eat at Helsinki-Vantaa Airport?

    Arriving passengers can opt between coffee and light fare from Starbucks or grab a burger and chips at Burger King. Bistro Airport offers pizza and pasta made with organic ingredients, while MOI! Helsinki has a good selection of lagers to whet your whistle and if you’re in the mood for a hotdog, then check out Richie’s Gourmet Hot dogs.

  • What visa do I need when I arrive at Helsinki Airport?

    As Finland is part of the Schengen area, it is possible to travel to Helsinki for up to 90 days without a visa. If you plan to stay longer than this, you will need to contact the Finnish Embassy. Your passport must also be valid for at least three months from the day you plan to leave the country.

  • Can I find a hotel at a London airport?

    Staying at an airport hotel is a great way to ensure you’re not in a rush. For instance, you can stay at Courtyard by Marriott at Luton Airport and Gatwick Airport. There is Holiday Inn Express at London City Airport, in the east of the capital, and Stansted Airport, to the north of London. Meanwhile, at Heathrow Airport, you can sleep at Aerotel.

  • How can I reduce my carbon emissions by taking a specific flight from London to Helsinki?

    You can find flights that emit fewer carbon emissions, which is better for the environment. For example, KLM operates this route releasing about 74% less carbon dioxide than the industry standard.

  • Which airlines provide Wi-Fi on flights from London to Helsinki Airport?

    If you are travelling to Helsinki for work, you should look for an airline that will keep you connected throughout. For instance, Scandinavian Airlines provides Wi-Fi to passengers, so you can stay online from take-off to touchdown.

  • What is the cheapest flight from London to Helsinki?

    In the last 3 days, the lowest price for a flight from London to Helsinki was £42 for a one-way ticket and £69 for a return.

  • Which airports will I be using when flying from London to Helsinki?

    London is served by 6 major airports and there is only 1 main airport in Helsinki. You will leave London from one of these airports: London City, London Gatwick, London Heathrow, London Luton, London Southend, or London Stansted. You will be arriving at Helsinki-Vantaa.

  • Which airlines offer Wi-Fi service onboard planes from London to Helsinki?

    Only Asiana Airlines offers inflight Wi-Fi service on the London to Helsinki flight route.

  • Which aircraft models fly most regularly from London to Helsinki?

    The Airbus A350-900 is the aircraft model that flies most regularly on the London to Helsinki flight route.

  • Which airline alliances offer flights from London to Helsinki?

    oneworld is the only airline alliance operating flights between London and Helsinki.

  • On which days can I fly direct from London to Helsinki?

    There are direct flights from London to Helsinki on a daily basis.

  • Which is the best airline for flights from London to Helsinki, Norwegian or airBaltic?

    The two airlines most popular with KAYAK users for flights from London to Helsinki are Norwegian and airBaltic. With an average price for the route of £154 and an overall rating of 7.8, Norwegian is the most popular choice. airBaltic is also a great choice for the route, with an average price of £51 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from London to Helsinki?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Helsinki.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Helsinki?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helsinki from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Helsinki?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Helsinki with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Helsinki?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Helsinki from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from London to Helsinki

  • Looking for a cheap flight from London to Helsinki? 25% of our users found flights on this route for £63 or less one-way and £115 or less round-trip.
  • Helsinki International Airport or Helsinki-Vantaa (HEL) is the gateway to the metropolitan area of Helsinki and the Uusimaa region of Finland. Several airlines use this airport as their hub, including the regional carriers Norra and City Jet, as well as the national carrier Finnair, which runs flights from London to Helsinki.
  • Since the flight from London to Helsinki is a short haul trip, you may wish to consider driving to the airport and parking your car. All five London metropolitan area airports have adequate parking space for your vehicle should you decide to do so, whether you’re away for a weekend or longer holiday.
  • If you are travelling with the family on your flight from London to Helsinki and you’re using London Gatwick Airport (LGW), you’ll be pleased to know that there are family security lanes, special assistance and Kid Zones located in both airport terminals, which are dedicated to making your travel experience a rewarding one.
  • GLO Hotel Airport is situated at Terminal 2 of Helsinki-Vantaa Airport and is perfect for business travellers or those who prefer accommodation within the vicinity of the airport. However, if it is unavailable, there are other nearby hotels to consider, including Hotel Hilton Helsinki Airport and Scandic Helsinki Airport, both of which are accessible by covered walkway from Terminal 2.
  • Passengers flying out of London Heathrow Airport (LHR) can enjoy the complimentary services and ambience of the lounges at Terminal 5 if they have time to spare before their flight departs. Plaza Premium Lounge near Gate 7 offers first-class comfort and facilities such as showers and spa, while Aspire Lounge near Gate 18 has disabled access, as well as a premium menu and free Wi-Fi.
  • You can get to London’s airports easily from the centre of the city. The Heathrow Express goes from Paddington Station to Heathrow Airport (LHR) in about 15min, the Gatwick Express departs from Victoria Station to Gatwick Airport (LGW) in around 30min, whilst the Stansted Express from Liverpool Street goes to Stansted Airport (STN) in about 45min. You can also reach Luton Airport (LTN) from St Pancras International via the Thameslink Railway, or City Airport (LCY) using the DLR from West Ham.
  • Helsinki Airport (HEL) serves a range of nearby towns and cities, making it a great place to land. From the terminal, you can drive to Vantaa in about 8min, Espoo in around 20 minutes and Lahti in approximately 1 hour.
See more tips

Prefer to fly direct from London to Helsinki?

Find which airlines fly direct from London to Helsinki-Vantaa Airport, which days they fly and book direct flights.

Direct departures

London to Helsinki-Vantaa

Monday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

Tuesday

Finnair, Ryanair

Finnair, Ryanair

Wednesday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

Thursday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

Friday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

Saturday

Finnair, Ryanair

Finnair, Ryanair

Sunday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

See more direct flights

Direct returns

Helsinki-Vantaa to London

Monday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

Tuesday

Finnair, Ryanair

Finnair, Ryanair

Wednesday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

Thursday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

Friday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

Saturday

Finnair, Ryanair

Finnair, Ryanair

Sunday

Finnair, Norwegian Air International, Ryanair

Finnair, Norwegian Air International, +1 more

See more direct flights
See more direct flights

Top 5 airlines serving from London to Helsinki

 
See real verified KAYAK customer reviews for airlines flying from London to Helsinki. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Helsinki? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
airBalticOverall score based on 178 reviews
7.1Entertainment
7.5Food
8.1Boarding
8.4Crew
8.0Comfort
Airline reviews

It's fine if you don't want to give free water or anything, but don't try to sell the food in first class like there is a chef that actively made the food from the finest local ingredients. Its still plane food and the chef hasn't been near that food for quite some time

6.0 GoodJoe, Feb 2025RIX - HAM
Read more airBaltic reviews

It's fine if you don't want to give free water or anything, but don't try to sell the food in first class like there is a chef that actively made the food from the finest local ingredients. Its still plane food and the chef hasn't been near that food for quite some time

I was very disappointed because a special assistance wasn’t given to me and water was given to me in 50 min after I asked about it.Poor service,

Smooth flight. Surprisingly good and inexpensive food choices. Clean cabin. The plane is not equipped with the entertainment system.

Failure of APU meant massive delays at start of journey , baking in an unventilated plane Not good

Delay ca 5 hours on the first flight and 2 hours on the next one

The airline ran late and I almost missed this connecting flight to LGW. The airline didn't act very sympathetic to my situation. I wished that didn't happen as my experience I'm sure would've been much different.

One flight has delayed, but connecting flight ( the same company) has another plan for us. And left TO TLL. Instead Finnair.Who waiting pax from BRUSSELS. GREAT EXAMPLE OF COOPERATION. 👍

Great leg room and very clean plane nothing could be better 😁

Pros: "Not much to say here. It was a short flight, and it went smoothly."
Cons: "I’ll say the same thing about almost every flight I have, and this is mostly for the airlines. People might fly more and pay a bit more if you give us more room. Being crammed into a tiny seat with a bunch of strangers is never pleasant. Same in this flight. Nothing terrible, just the usual. Also, to the other passengers, sit down until it’s your turn to exit. What is wrong with you that you can’t sit five more minutes? Be polite and let the people in front of you go first, let them have room to grab their bags instead of having your elbows in their face."
Pros: "Everything except the delay"
Cons: "No delays, took bag crew forever to load the plane, they were extremely late....waited over 35minutes"

Overall flight was fantastic.i really enjoy the whole journey .

Little more legroom would have been nice. But it's a very short flight, so it was fine really.

Short flight, some waiting to board, but no issues and no frills.

No staff at the gate and the flights were not posted on the board so we missed our flight. Horrible experience. Be VERY careful flying Norwegian. Super limited ability to communicate with their slim staffing and restricted hours.

Tickets were cheap but it says no where that food was not included, I travel Austrian, Swiss and Turkish airlines all the time always food is included, never flew Norwegian again

Pros: "Nothing,except I got to my destination safely"
Cons: "Everything.They don’t ever offer you WATER in a 10 hour flight!! Check in crew rude. Attends dismissive to rude."

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Any flight that lands safely is a good flight. However our leg from Helsinki was delayed 1 hour with no explanation. The delay would not allow us to make our connection to Cincinnati. I was informed by American Airlines that our Cincinnati flight was rescheduled for the following day. I immediately made a non refundable hotel reservation in Dallas. Upon exiting the plane at Dallas I was given a hotel voucher. Nice, but I can't get a refund on the hotel I booked. A little communication would have been helpful. Food on Finnair is below quality of Korean Air.

The cabin crew really looked like they wanted to be somewhere else. They weren't really interested in providing an attentive service to full fare paying passengers at all. However the Captiain's in flight announcements were relaxed and very entertaining.

Crew were professional and responsive. Food was mediocre and breakfast could do with revampinmg

Food was very ordinary for premium economy, very small portions.

i dont know WHY they call it business class. the seats are NOT significantly wider than economy seats, they just do not let the middle seats be beepked to give the illusion of more space between passengers. the seats do NOT recline any more than economy seats either. the only real difference is the full meal served to business (vs none for economy). I would rather have a wider, lie flat ACTUAL business class seat with no food for a 3 hr flight. this was pretty disappointing to say the least.

There wore nice leather like sits, in my opinion seats lay out bit tight . Crew was great they did averything possible to make averywone comfortable as possible, food was, think worst I ever head on flight, head chicken and yellow rice. Ice cream was a nic treat.

Our previous flight was delayed but they waited for us to board.

Flight was delayed, short time connection to next flight but we make it, service was good, worth to fly just to try thair on board blueberry juce. Eccelent communication with airline.

My American Airlines flight was deleted and you guys never let me know

Very helpful in getting us off the plane first to make a tight connection.

Very unfriendly approach to me when you rescheduled my return flight due to your delay. No help to address my health concerns because I am diabetics and had orthopedic problems. No clear explanation where to clear customs. I had poor customer service

The seats were really cramped. The high backs on the chairs made you feel claustrophobic.

The flight got canceled and you just send an email in the middle of the night and no solution to how to get on the next flight or provide other solutions.

They were all bad because SAS was at fault and cost me my time. I will never fly SAS again.

You cost me my time and did not compensate properly. Gfy.

Please see my comments for the flight from Chicago to Copenhagen

All flights were on time! The crew was nice and polite Thank you. Food was awful. They give you terrible pasta or rice dish and make you pay for chicken if you’d like meat. When I asked for water with my tea, they told me, I’d have to pay 3 euros for water. Restrooms were filthy half way through the flight.

We were sitting in SAS plus. Super friendly, service that went above and beyond on a Full Flight too! Meals were deliscious and trays were cleared promptly. Generous drinks offered throughout the flight. Would like to suggest better movies on offer to watch.... In all genres and maybe more cooking shows? There was only 1, Nadia's Everyday Baking... Thank you

It was ok. Vegan meal was good, however no complimentary alcoholic beverages.

Awful as usual the air stewardess loved her own voice and would not stop talking on coms for 2hrs please please please shut up I can’t hear my headphones and don’t want to buy juty free

ontime and super quick boarding and disembarking. I made it in 6 min from airplane through passport control to the train platformin Cologne. Amazingly quick airport.

They lost a bag and now our vacation is ruined

Boarding was fast and efficient. The crew was super friendly. Since it’s a budget airline and it’s a short flight, I can’t expect food or entertainment.

There plane had a technical pricken so we had to disembark, but the replacement aircraft was provided within one hour so there was not much delay.

Miserable staff did not want to be there. Very poor atmosphere boarding. Then just basic flight.

We were diverted to warsaw and there was zero information. We were just forced to disembark and off we go good luck the reat of the way. We all had to go our ways to find a way home!!!! Horrible horrible and it cost us alot of money to get a hotel and trains 4:30 pm next day.

Long delay was made worse by lack of information and long time in queue waiting for the plane to arrive

Blood contaminated tissue was stuffed to the back of the seat in front of us.

Great flight, departed only 10 mins behind schedule off the aircraft and through security in less than 15 minutes. Love flying from Cardiff so easy a quick from entrance to duty free in less than 10 minutes 😀

Everything you need to know for your flight from London to Helsinki

Other airlines flying from London to Helsinki

Flights from the other most popular airlines that fly from London to Helsinki according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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