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Cheap Flights from Barcelona to SeaTac

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      Travellers and cabin class, 1 Adult, Economy
      1. Home
      2. Spain
      3. Barcelona
      4. SeaTac
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      Barcelona Airport to SeaTac flight deals

      Looking for a cheap last-minute deal or the best return flight from Barcelona Airport to SeaTac? Find our lowest prices on one-way and return tickets to the easiest airport right here.
      Seattle.£467 per passenger.Departing Mon, 15 Sep, returning Sat, 27 Sep.Return flight with Wizz Air Malta and Icelandair.Outbound indirect flight with Wizz Air Malta, departs from Barcelona on Mon, 15 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sat, 27 Sep, arriving in Barcelona.Price includes taxes and charges.From £467, select.
      Mon, 15 SepBCN - SEA with Wizz Air Malta
      1 stop
      Sat, 27 SepSEA - BCN with Icelandair
      1 stop
      from £467
      Seattle.£474 per passenger.Departing Tue, 23 Sep, returning Sat, 11 Oct.Return flight with Wizz Air Malta and Icelandair.Outbound indirect flight with Wizz Air Malta, departs from Barcelona on Tue, 23 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sat, 11 Oct, arriving in Barcelona.Price includes taxes and charges.From £474, select.
      Tue, 23 SepBCN - SEA with Wizz Air Malta
      1 stop
      Sat, 11 OctSEA - BCN with Icelandair
      1 stop
      from £474
      Seattle.£481 per passenger.Departing Mon, 13 Oct, returning Sat, 18 Oct.Return flight with Wizz Air Malta and Icelandair.Outbound indirect flight with Wizz Air Malta, departs from Barcelona on Mon, 13 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sat, 18 Oct, arriving in Barcelona.Price includes taxes and charges.From £481, select.
      Mon, 13 OctBCN - SEA with Wizz Air Malta
      1 stop
      Sat, 18 OctSEA - BCN with Icelandair
      1 stop
      from £481
      Seattle.£512 per passenger.Departing Mon, 10 Nov, returning Mon, 17 Nov.Return flight with Vueling Airlines and Aer Lingus.Outbound indirect flight with Vueling Airlines, departs from Barcelona on Mon, 10 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with Aer Lingus, departs from Seattle / Tacoma International on Mon, 17 Nov, arriving in Barcelona.Price includes taxes and charges.From £512, select.
      Mon, 10 NovBCN - SEA with Vueling Airlines
      1 stop
      Mon, 17 NovSEA - BCN with Aer Lingus
      1 stop
      from £512
      Seattle.£513 per passenger.Departing Fri, 29 Aug, returning Mon, 1 Sep.Return flight with Iberia and Icelandair.Outbound indirect flight with Iberia, departs from Barcelona on Fri, 29 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 1 Sep, arriving in Barcelona.Price includes taxes and charges.From £513, select.
      Fri, 29 AugBCN - SEA with Iberia
      1 stop
      Mon, 1 SepSEA - BCN with Icelandair
      1 stop
      from £513
      Seattle.£516 per passenger.Departing Fri, 29 Aug, returning Fri, 3 Oct.Return flight with Wizz Air Malta and Icelandair.Outbound indirect flight with Wizz Air Malta, departs from Barcelona on Fri, 29 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Fri, 3 Oct, arriving in Barcelona.Price includes taxes and charges.From £516, select.
      Fri, 29 AugBCN - SEA with Wizz Air Malta
      1 stop
      Fri, 3 OctSEA - BCN with Icelandair
      1 stop
      from £516
      Seattle.£530 per passenger.Departing Thu, 30 Oct, returning Sun, 2 Nov.Return flight with Wizz Air Malta and Lufthansa.Outbound indirect flight with Wizz Air Malta, departs from Barcelona on Thu, 30 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Lufthansa, departs from Seattle / Tacoma International on Sun, 2 Nov, arriving in Barcelona.Price includes taxes and charges.From £530, select.
      Thu, 30 OctBCN - SEA with Wizz Air Malta
      1 stop
      Sun, 2 NovSEA - BCN with Lufthansa
      1 stop
      from £530
      Seattle.£542 per passenger.Departing Mon, 24 Nov, returning Sun, 7 Dec.Return flight with Iberia and Hawaiian Airlines.Outbound indirect flight with Iberia, departs from Barcelona on Mon, 24 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with Hawaiian Airlines, departs from Seattle / Tacoma International on Sun, 7 Dec, arriving in Barcelona.Price includes taxes and charges.From £542, select.
      Mon, 24 NovBCN - SEA with Iberia
      1 stop
      Sun, 7 DecSEA - BCN with Hawaiian Airlines
      1 stop
      from £542
      How did we find these deals? We scanned the web to find the best airport to fly to if you’re flying from Barcelona Airport to SeaTac – which happens to be Seattle / Tacoma International Airport. The deals you see here are the lowest fares found in the last 4 days, and are subject to change and availability.

      Barcelona to SeaTac: Flight information

      The things to know before you go.
      Fly intoSeattle / Tacoma International Airport
      Cheapest flight found£467
      Cheapest month to flySeptember
      Average flight time11 hrs, 25 mins
      Most popular airlineDelta

      Find the cheapest month to fly from Barcelona to SeaTac

      We’re always keeping an eye on fares, so you can find the best flight deal in seconds. It looks like Barcelona to SeaTac flights are currently cheapest in September. We’ve based this on flights into Seattle / Tacoma International Airport.
      Jul
      from £693
      Aug
      from £578
      Sep
      from £467
      Oct
      from £481
      Nov
      from £512
      Dec
      from £581
      Jan
      from £565
      Feb
      Find prices
      Mar
      from £556
      Apr
      from £598
      May
      from £573
      Jun
      from £584

      How to find cheap flights from Barcelona Airport to SeaTac with Skyscanner

      Looking for cheap flight tickets from Barcelona Airport to SeaTac? Here are a few tips on how to find the best price.

      Simply hit 'search'.

      We've compared every online travel agent and flight provider out there to find the cheapest flight tickets from Barcelona Airport to SeaTac.

      Compare flights from over 1,000 providers.

      Then choose the cheapest or fastest plane tickets. Flight tickets to SeaTac start from £278 one-way.

      Include nearby airports in your search.

      Widen your search for the cheapest flights to SeaTac by selecting the 'Add nearby airports' option when you search. This will allow you to see flight prices for all the other airports near Barcelona Airport you could fly from, and ones near to SeaTac. It could save you heaps of cash!

      Fly in September.

      The cheapest time to fly from Barcelona Airport to SeaTac is currently September.

      Flex your dates for the best rates.

      If you’re flexible on your departure dates, use Skyscanner's whole month tool to find the cheapest month, and even day to get Barcelona Airport to SeaTac flights.

      Look for direct flights.

      Only interested in direct Barcelona Airport to SeaTac flights? Make sure to tick 'Direct flights only' when performing a search. If there are direct SeaTac flights available, these will appear in the results.

      Set up a Price Alert.

      We'll let you know when the price of flights to Seattle / Tacoma International Airport or any other airports in or around SeaTac go up or down, so you can book when the time is just right.

      Find flights on the fly with the Skyscanner app.

      To get the best flight booking experience when out and about, download the Skyscanner app and search for plane tickets from Barcelona Airport to SeaTac whenever you want.

      Finding cheap flights from Barcelona to SeaTac: Frequently asked questions

      There are 3 airports near SeaTac: Seattle / Tacoma International Airport, Seattle Boeing Fld Airport and Seattle Lake Union SPB Airport.
      The best price we found for a return flight from Barcelona to SeaTac is £467. 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.
      Delta, KLM, Air France all offer direct flights to Seattle / Tacoma International Airport.
      We've checked every Barcelona Airport to SeaTac fare we could find, and the cheapest upcoming date to fly seems to be on Monday, 15 September 2025. Overall, the cheapest month to fly from Barcelona Airport to SeaTac is usually September.
      If you're flying from Barcelona Airport, the cheapest airport near SeaTac is Seattle / Tacoma International – which is 0.9 miles away from the centre of SeaTac. We've found flights into this airport from £467.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Barcelona Airport to SeaTac on Monday, 15 September 2025.
      No airlines currently offer direct flights between Barcelona Airport and SeaTac. Most routes have one or more stops.
      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 SeaTac 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 SeaTac is around 40 days in advance, so don’t leave your flight to the last minute.
      Seattle / Tacoma International Airport is 0.9 miles from SeaTac, Seattle Boeing Fld Airport is 5.3 miles from SeaTac, and Seattle Lake Union SPB Airport is 12.0 miles from SeaTac.
      Seattle / Tacoma International Airport is closest to SeaTac, at around 0.9 miles away.
      Currently, the cheapest airline that flies to Seattle / Tacoma International Airport - the closest airport to SeaTac - Wizz Air Malta.
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