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Cheap Flights from Seattle (SEA) to Helsinki (HEL)

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      Compare Seattle / Tacoma International to Helsinki Vantaa flight deals

      Find the cheapest month or even day of the year to fly to Helsinki Vantaa

      Book the best Helsinki Vantaa fare with no extra fees

      Flight deals from Seattle / Tacoma International to Helsinki Vantaa

      Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to Helsinki Vantaa Airport? If you want to travel next month, return fares start from $702. Find the lowest prices on one-way and return tickets right here.
      Helsinki.$702 per passenger.Departing Mon, 19 Oct, returning Mon, 26 Oct.Return flight with Icelandair and Norwegian Air Sweden.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 19 Oct, arriving in Helsinki Vantaa.Inbound indirect flight with Norwegian Air Sweden, departs from Helsinki Vantaa on Mon, 26 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $702, select.
      Helsinki.$831 per passenger.Departing Mon, 9 Nov, returning Mon, 23 Nov.Return flight with Icelandair and Norwegian Air Sweden.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 9 Nov, arriving in Helsinki Vantaa.Inbound indirect flight with Norwegian Air Sweden, departs from Helsinki Vantaa on Mon, 23 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $831, select.
      Helsinki.$850 per passenger.Departing Tue, 29 Sep, returning Tue, 6 Oct.Return flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, departs from Seattle / Tacoma International on Tue, 29 Sep, arriving in Helsinki Vantaa.Inbound indirect flight with Scandinavian Airlines, departs from Helsinki Vantaa on Tue, 6 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $850, select.
      Helsinki.$1,051 per passenger.Departing Thu, 21 Jan, returning Thu, 28 Jan.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Thu, 21 Jan, arriving in Helsinki Vantaa.Inbound indirect flight with Icelandair, departs from Helsinki Vantaa on Thu, 28 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,051, select.
      Helsinki.$1,148 per passenger.Departing Wed, 10 Feb, returning Tue, 23 Feb.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Wed, 10 Feb, arriving in Helsinki Vantaa.Inbound indirect flight with Icelandair, departs from Helsinki Vantaa on Tue, 23 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,148, select.
      Helsinki.$1,215 per passenger.Departing Sun, 7 Mar, returning Sun, 14 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sun, 7 Mar, arriving in Helsinki Vantaa.Inbound indirect flight with Icelandair, departs from Helsinki Vantaa on Sun, 14 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,215, select.
      Helsinki.$1,220 per passenger.Departing Tue, 27 Oct, returning Tue, 3 Nov.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 27 Oct, arriving in Helsinki Vantaa.Inbound indirect flight with Icelandair, departs from Helsinki Vantaa on Tue, 3 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,220, select.
      Helsinki.$1,223 per passenger.Departing Sun, 20 Sep, returning Mon, 28 Sep.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Seattle / Tacoma International on Sun, 20 Sep, arriving in Helsinki Vantaa.Inbound indirect flight with Lufthansa, departs from Helsinki Vantaa on Mon, 28 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,223, select.
      Helsinki.$1,227 per passenger.Departing Thu, 26 Nov, returning Tue, 1 Dec.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Thu, 26 Nov, arriving in Helsinki Vantaa.Inbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Tue, 1 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,227, select.
      Helsinki.$1,230 per passenger.Departing Tue, 6 Apr, returning Sun, 11 Apr.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 6 Apr, arriving in Helsinki Vantaa.Inbound indirect flight with Icelandair, departs from Helsinki Vantaa on Sun, 11 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,230, select.
      Helsinki.$1,240 per passenger.Departing Wed, 9 Dec, returning Tue, 15 Dec.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 9 Dec, arriving in Helsinki Vantaa.Inbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Tue, 15 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,240, select.
      Helsinki.$1,378 per passenger.Departing Thu, 31 Dec, returning Wed, 6 Jan.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Thu, 31 Dec, arriving in Helsinki Vantaa.Inbound indirect flight with Icelandair, departs from Helsinki Vantaa on Wed, 6 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,378, select.
      Helsinki.$1,412 per passenger.Departing Tue, 6 Apr, returning Sun, 11 Apr.Return flight with British Airways.Outbound direct flight with British Airways departs from Seattle / Tacoma International on Tue, 6 Apr, arriving in Helsinki Vantaa.Inbound direct flight with British Airways departs from Helsinki Vantaa on Sun, 11 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,412, select.
      Helsinki.$1,431 per passenger.Departing Sat, 12 Sep, returning Mon, 28 Sep.Return flight with British Airways.Outbound direct flight with British Airways departs from Seattle / Tacoma International on Sat, 12 Sep, arriving in Helsinki Vantaa.Inbound direct flight with British Airways departs from Helsinki Vantaa on Mon, 28 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,431, select.
      Helsinki.$1,432 per passenger.Departing Sat, 9 Jan, returning Sun, 28 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 9 Jan, arriving in Helsinki Vantaa.Inbound indirect flight with Delta, departs from Helsinki Vantaa on Sun, 28 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,432, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Seattle / Tacoma International to Helsinki Vantaa found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Seattle / Tacoma International to Helsinki Vantaa

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Helsinki Vantaa flights are currently cheapest in October.
      Sep
      from $1,223
      Oct
      from $702
      Nov
      from $831
      Dec
      from $1,240
      Jan
      from $1,051
      Feb
      from $1,148
      Mar
      from $1,215
      Apr
      from $1,230
      May
      Find prices
      Jun
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      Jul
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      Aug
      Find prices

      Direct flights from Seattle / Tacoma International to Helsinki Vantaa

      Alaska Airlines
      American Airlines
      British Airways
      Finnair
      Iberia

      Seattle / Tacoma International to Helsinki Vantaa: Alternative routes

      Compare routes from Seattle / Tacoma International to Helsinki below. You may find an airport to fly into that's cheaper, faster, or easier than Helsinki Vantaa.

      Helsinki Vantaa

      17km from central Helsinki
      ClosestCheapest
      from $702
      Search flights

      Seattle to Helsinki: Flight information

      The things to know before you go.
      Cheapest flight found$702
      Cheapest month to flyOctober
      Average flight time9 hrs, 30 mins
      Most popular airlineAmerican Airlines
      Average flights per week15

      Finding cheap flights from Seattle / Tacoma International to Helsinki Vantaa: Frequently asked questions

      The best price we found for a return flight from Seattle / Tacoma International to Helsinki Vantaa is $702. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      9 hours and 30 minutes is the average flight time from Seattle / Tacoma International to Helsinki Vantaa.
      American Airlines, Finnair and British Airways fly direct from Seattle / Tacoma International to Helsinki Vantaa.
      As of September 2026, there are 15 flights per week flying from Seattle / Tacoma International to Helsinki Vantaa.
      The cheapest month to fly from Seattle / Tacoma International to Helsinki Vantaa is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Helsinki Vantaa Airport on Monday, 19 October 2026.
      Yes – the average flight time is 9 hours and 30 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Helsinki Vantaa but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Helsinki is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Icelandair and British Airways offer the cheapest flight tickets to Helsinki Vantaa.

      Flying from Seattle / Tacoma International Airport (SEA) to Helsinki Vantaa Airport (HEL): what you need to know

      • Around 9 hours 30 minutes is how long you'll be travelling on a direct flight from Seattle / Tacoma International Airport to Helsinki Vantaa Airport.

      • Helsinki's timezone is UTC+2, making Helsinki ten hours ahead of Seattle.

      • To ensure you catch your SEA to HEL flight, leave plenty of time for things like baggage drop and finding your gate. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.

      • Travelling during a peak month like July? Public holidays and other popular seasons can lead to longer queues at check-in and security. Play things extra safe and get there up to four hours ahead of an international flight and two hours before domestic departures.

      • Finnair has direct flights from Seattle / Tacoma International Airport to Helsinki Vantaa Airport. Book with this popular airline, then get ready to check out the sights in Helsinki — and maybe even more of Finland if your schedule allows.

      • Most passengers choose to travel with Finnair on this route.

      • We make it a breeze to book a flight with a stopover. To see your options for tickets from Seattle / Tacoma International Airport to Helsinki Vantaa Airport, deselect 'Direct flights only.' Then, choose a flight offering a stop long enough to tour your chosen city. Top stopovers between SEA and HEL include:

        • London Heathrow Airport

        • Amsterdam Schiphol Airport

        • Reykjavik Keflavik Airport

      How to find the cheapest flights from Seattle / Tacoma International Airport (SEA) to Helsinki Vantaa Airport (HEL)

      • $362 is the lowest price for a one-way Seattle / Tacoma International Airport to Helsinki Vantaa Airport flight. Return flights start from $702. These fares may change depending on availability and demand.

      • Book seven months before you travel. After looking at the numbers on our calendar, this is how far you'll want to book ahead to secure cheap tickets from SEA to HEL.

      • Organise your trip for December. That's the cheapest month for flights from Seattle / Tacoma International Airport to Helsinki Vantaa Airport. If you have flexibility with your dates, try out the 'Whole month' tool to find the cheapest price across every month.

      • Picking up cheap flights from SEA to HEL is a cinch with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as there's a better deal.

      • Discover the perfect flight for you by using the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Seattle / Tacoma International Airport to Helsinki Vantaa Airport, use the 'Sort by' function. You can also filter by airline, departure and arrival times, and journey duration.

      Handy information about Seattle / Tacoma International Airport (SEA)

      • Seattle / Tacoma International Airport maintains a solid on-time performance, so flight disruptions are less likely. Departures from SEA touch down on schedule 80% of the time.

      • To get to Seattle / Tacoma International Airport from central Seattle, it'll take about 25 minutes if you're travelling by car. This depends on traffic though. It's approximately 23 kilometres from the airport to the city centre.

      • Expect a trip time of roughly 35 minutes on public transport.

      • Need a convenient hotel near SEA? If you've booked an early flight from Seattle / Tacoma International Airport to Helsinki Vantaa Airport, these stays will put you moments from check-in:

      Arriving at Helsinki Vantaa Airport (HEL)

      • Consider staying in a hotel near HEL if you're on a late Seattle / Tacoma International Airport to Helsinki Vantaa Airport flight. Check in to one of these options and skip the long transfer after landing:

      • Pick up a Helsinki Vantaa Airport rental car and discover Helsinki and beyond with your own wheels. Green Motion, Alamo and addCar are well-known companies you can book with here.

      • Get the best deal by booking your ride from Helsinki Vantaa Airport about two weeks ahead of your departure.

      Getting from Helsinki Vantaa Airport (HEL) to central Helsinki

      • Helsinki Vantaa Airport is roughly 18 kilometres from the centre of Helsinki. The drive time takes about 25 minutes.

      • When travelling by public transport, expect a journey time of roughly 30 minutes.

      When to fly to Helsinki Vantaa Airport (HEL)

      • September is the busiest month for flights from Seattle / Tacoma International Airport to Helsinki Vantaa Airport. For a quieter experience, go to Helsinki in March.

      • When reserving your flight from Seattle / Tacoma International Airport to Helsinki Vantaa Airport, think about the type of weather you like. July is the warmest month in Helsinki, with the temperature ranging from 12ºC (54ºF) to 26ºC (79ºF).

      • January has average temperatures of between -12ºC (10ºF) and 3ºC (37ºF). Search for cheap tickets from SEA to HEL around that time if you like cooler conditions.

      Explore more of Finland

      • You've visited Helsinki, now it's time to discover other parts of Finland. Travel about 16 kilometres west to Espoo to check off its top attractions. From Nuuksio Park to Nuuksio National Park and EMMA - Espoo Museum of Modern Art, your itinerary will be busy.

      • Around 161 kilometres north-west of Helsinki, Tampere is another favourite stop in Finland. Experience this destination's highlights firsthand at Pyynikki Observation Tower, The Natural History Museum and Pyynikki Nature Reserve.

      Plan smart, explore more

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      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.