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

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      Compare Helsinki Vantaa to Seattle / Tacoma International flight deals

      Find the cheapest month or even day of the year to fly to Seattle / Tacoma International

      Book the best Seattle / Tacoma International fare with no extra fees

      Flight deals from Helsinki Vantaa to Seattle / Tacoma International

      Looking for a cheap last-minute deal or the best return flight from Helsinki Vantaa Airport to Seattle / Tacoma International Airport? If you want to travel next month, return fares start from $920. Find the lowest prices on one-way and return tickets right here.
      Seattle.$920 per passenger.Departing Sat, 17 Oct, returning Sat, 24 Oct.Return flight with Scandinavian Airlines and Icelandair.Outbound indirect flight with Scandinavian Airlines, departs from Helsinki Vantaa on Sat, 17 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sat, 24 Oct, arriving in Helsinki Vantaa.Price includes taxes and charges.From $920, select.
      Seattle.$1,055 per passenger.Departing Thu, 29 Oct, returning Tue, 10 Nov.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Thu, 29 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Tue, 10 Nov, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,055, select.
      Seattle.$1,095 per passenger.Departing Mon, 18 Jan, returning Thu, 21 Jan.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Mon, 18 Jan, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Thu, 21 Jan, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,095, select.
      Seattle.$1,120 per passenger.Departing Fri, 12 Mar, returning Wed, 17 Mar.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Fri, 12 Mar, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 17 Mar, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,120, select.
      Seattle.$1,120 per passenger.Departing Mon, 2 Nov, returning Thu, 5 Nov.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Mon, 2 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Thu, 5 Nov, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,120, select.
      Seattle.$1,120 per passenger.Departing Tue, 6 Apr, returning Tue, 13 Apr.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Tue, 6 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Tue, 13 Apr, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,120, select.
      Seattle.$1,174 per passenger.Departing Sun, 20 Dec, returning Fri, 8 Jan.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Sun, 20 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Fri, 8 Jan, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,174, select.
      Seattle.$1,176 per passenger.Departing Tue, 23 Feb, returning Thu, 18 Mar.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Tue, 23 Feb, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Thu, 18 Mar, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,176, select.
      Seattle.$1,176 per passenger.Departing Thu, 19 Nov, returning Wed, 2 Dec.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Thu, 19 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 2 Dec, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,176, select.
      Seattle.$1,176 per passenger.Departing Wed, 3 Feb, returning Thu, 11 Feb.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Wed, 3 Feb, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Thu, 11 Feb, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,176, select.
      Seattle.$1,177 per passenger.Departing Tue, 1 Dec, returning Mon, 7 Dec.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Tue, 1 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Mon, 7 Dec, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,177, select.
      Seattle.$1,184 per passenger.Departing Fri, 30 Apr, returning Tue, 4 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Fri, 30 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Tue, 4 May, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,184, select.
      Seattle.$1,184 per passenger.Departing Mon, 3 May, returning Fri, 7 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Helsinki Vantaa on Mon, 3 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Fri, 7 May, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,184, select.
      Seattle.$1,204 per passenger.Departing Tue, 22 Sep, returning Tue, 29 Sep.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from Helsinki Vantaa on Tue, 22 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Air France, departs from Seattle / Tacoma International on Tue, 29 Sep, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,204, select.
      Seattle.$1,204 per passenger.Departing Tue, 26 Jan, returning Tue, 2 Feb.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from Helsinki Vantaa on Tue, 26 Jan, arriving in Seattle / Tacoma International.Inbound indirect flight with Air France, departs from Seattle / Tacoma International on Tue, 2 Feb, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,204, select.
      Seattle.$1,204 per passenger.Departing Tue, 29 Sep, returning Tue, 6 Oct.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from Helsinki Vantaa on Tue, 29 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Air France, departs from Seattle / Tacoma International on Tue, 6 Oct, arriving in Helsinki Vantaa.Price includes taxes and charges.From $1,204, select.

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

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Helsinki Vantaa to Seattle / Tacoma International flights are currently cheapest in October.
      Sep
      from $1,204
      Oct
      from $920
      Nov
      from $1,120
      Dec
      from $1,177
      Jan
      from $1,095
      Feb
      from $1,176
      Mar
      from $1,120
      Apr
      from $1,120
      May
      from $1,184
      Jun
      from $1,252
      Jul
      from $1,448
      Aug
      from $1,287

      Direct flights from Helsinki Vantaa to Seattle / Tacoma International

      Alaska Airlines
      American Airlines
      British Airways
      Finnair
      Iberia

      Helsinki Vantaa to Seattle / Tacoma International: Alternative routes

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

      Seattle Lake Union SPB

      2km from central Seattle
      Closest
      Search flights

      Seattle Boeing Fld

      11km from central Seattle
      Search flights

      Seattle / Tacoma International

      20km from central Seattle
      Cheapest
      from $920
      Search flights

      Paine Field

      33km from central Seattle
      from $1,618
      Search flights

      Helsinki to Seattle: Flight information

      The things to know before you go.
      Cheapest flight found$920
      Cheapest month to flyOctober
      Average flight time9 hrs, 39 mins
      Most popular airlineAmerican Airlines
      Average flights per week15

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

      The best price we found for a return flight from Helsinki Vantaa to Seattle / Tacoma International is $920. 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 39 minutes is the average flight time from Helsinki Vantaa to Seattle / Tacoma International.
      American Airlines, Finnair and British Airways fly direct from Helsinki Vantaa to Seattle / Tacoma International.
      As of September 2026, there are 15 flights per week flying from Helsinki Vantaa to Seattle / Tacoma International.
      The cheapest month to fly from Helsinki Vantaa to Seattle / Tacoma International is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Helsinki Vantaa Airport to Seattle / Tacoma International Airport on Saturday, 17 October 2026.
      Yes – the average flight time is 9 hours and 39 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 Seattle / Tacoma International 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 Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Scandinavian Airlines and British Airways offer the cheapest flight tickets to Seattle / Tacoma International.

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

      • The average time for a direct flight from Helsinki Vantaa Airport to Seattle / Tacoma International Airport is 9 hours 40 minutes.

      • Seattle's timezone is UTC-8, making Seattle ten hours behind Helsinki.

      • Arrive at the airport on time so you don't miss your HEL to SEA flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.

      • Flying during a peak month such as September? School holidays and other popular periods can result in longer queues and delays at airport checkpoints. Play things extra safe and get there up to four hours ahead of an international flight and two hours before domestic departures.

      • Flying into Seattle (and then exploring more of the United States!) is easy with Finnair. This popular airline offers direct flights from Helsinki Vantaa Airport to Seattle / Tacoma International Airport.

      • Finnair is the airline most travellers choose for this route.

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

        • Paris Charles de Gaulle Airport

        • Munich Airport

        • Reykjavik Keflavik Airport

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

      • $722 is currently the best price for a one-way Helsinki Vantaa Airport to Seattle / Tacoma International Airport flight. A return flight starts at $920. These fares may change depending on demand.

      • To pick up cheap tickets from HEL to SEA, reserve your journey six months ahead of your departure.

      • Organise your trip for November. That's the cheapest month for flights from Helsinki Vantaa Airport to Seattle / Tacoma International Airport. If you're flexible on when you fly, try out the 'Whole month' tool to find the cheapest price across every month.

      • Picking up cheap flights from HEL to SEA is a breeze with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when a lower fare pops up.

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

      Handy information about Helsinki Vantaa Airport (HEL)

      • Helsinki Vantaa Airport scores high marks for its on-time performance. 84% of flights that depart HEL arrive at their destination on time.

      • Helsinki Vantaa Airport is about 18 kilometres from central Helsinki. If you're catching a taxi, ride-sharing or driving from the centre, it'll take you 25 minutes or so to arrive, depending on the traffic.

      • The journey on public transport will take about 30 minutes.

      • Catching an early flight from Helsinki Vantaa Airport to Seattle / Tacoma International Airport? Avoid rushing to the terminal (and enjoy a little extra shut-eye) by picking one of these hotels near HEL:

      Arriving at Seattle / Tacoma International Airport (SEA)

      Getting from Seattle / Tacoma International Airport (SEA) to central Seattle

      • Seattle / Tacoma International Airport is approximately 23 kilometres from central Seattle. Driving there takes about 25 minutes.

      • If you're using public transport, expect a journey time of roughly 35 minutes.

      When to fly to Seattle / Tacoma International Airport (SEA)

      • It's time to work out your trip dates for your flight from Helsinki Vantaa Airport to Seattle / Tacoma International Airport. July is the most popular month to visit Seattle. If you'd like a quieter vibe, go in March.

      • Book your flight from Helsinki Vantaa Airport to Seattle / Tacoma International Airport for August if you want to explore Seattle during its warmest month. You can expect temperatures of between 12ºC (54ºF) and 28ºC (82ºF).

      • Look for cheap tickets from HEL to SEA in February if you like cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

      Explore more of the United States

      • Seattle has plenty to offer, but there are so many other parts of the United States just waiting to be discovered. Around 241 kilometres south of Seattle, a visit to Portland will fill your itinerary to the brim. Start with popular sights like Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

      • Spokane is another essential stop in the United States and is around 370 kilometres east of Seattle. No journey is complete without dropping by Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

      Plan smart, explore more

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