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$313+ Cheap flights from Barcelona-El Prat (BCN) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — SEA
feb. 20 — feb. 271
vie. 2/20
vie. 2/27
1 adult, Economy
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Cheap flight deals from Barcelona-El Prat to Seattle

Cheapest flights from Barcelona-El Prat to Seattle
Explore the most affordable flight options available from Barcelona-El Prat to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2026.

This CheapOair deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/810:55 am
BCN
-
SEA
1 stop13h 45m
Condor
mié. 5/135:40 pm
SEA
-
BCN
1 stop19h 30m
Condor
Deal found 1/21$561
This Condor deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/178:00 am
BCN
-
SEA
1 stop16h 40m
Condor
mié. 7/85:40 pm
SEA
-
BCN
1 stop13h 20m
Condor
Deal found 1/20$594
This Rumbo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/1311:50 am
BCN
-
SEA
1 stop14h 10m
Icelandair
sáb. 3/287:00 pm
SEA
-
BCN
1 stop34h 45m
Icelandair
Deal found 1/20$608
This lol.travel deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/210:40 am
BCN
-
SEA
1 stop17h 38m
Finnair
mar. 2/176:44 am
SEA
-
BCN
1 stop17h 06m
Finnair
Deal found 1/19$609
This lol.travel deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/510:40 am
BCN
-
SEA
1 stop17h 38m
Finnair
mié. 2/186:44 am
SEA
-
BCN
1 stop17h 06m
Finnair
Deal found 1/20$611
This Flighttix deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/1310:55 am
BCN
-
SEA
1 stop13h 45m
Condor
sáb. 5/235:40 pm
SEA
-
BCN
1 stop19h 30m
Condor
Deal found 1/19$613
This Booking.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/188:00 am
BCN
-
SEA
1 stop16h 40m
Condor
jue. 7/95:40 pm
SEA
-
BCN
1 stop13h 20m
Condor
Deal found 1/20$616
This lol.travel deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/110:40 am
BCN
-
SEA
1 stop17h 38m
Finnair
lun. 2/166:44 am
SEA
-
BCN
1 stop17h 06m
Finnair
Deal found 1/20$628
This British Airways deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/310:40 am
BCN
-
SEA
1 stop17h 45m
British Airways
mar. 3/102:25 pm
SEA
-
BCN
1 stop16h 20m
British Airways
Deal found 1/20$630
This Cheapflightsfares deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/169:00 pm
BCN
-
SEA
1 stop23h 30m
British Airways
lun. 2/236:50 pm
SEA
-
BCN
1 stop14h 05m
British Airways
Deal found 1/19$633
This Kiwi.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/36:10 pm
BCN
-
SEA
1 stop25h 23m
Multiple Airlines
mar. 3/103:35 pm
SEA
-
BCN
2 stops16h 20m
Multiple Airlines
Deal found 1/20$635

Find flight deals from Barcelona-El Prat to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Barcelona-El Prat (BCN) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$608
(Rumbo)

One-way from

$313
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$908
Provider with most accurate pricing for Barcelona-El Prat-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Barcelona-El Prat-Seattle/Tacoma Intl flights.
Search Deals
From Barcelona-El Prat to Seattle/Tacoma Intl
Search Deals
One-way flight from Barcelona-El Prat to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Barcelona-El Prat to Seattle 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 2,558,603 searches. Data last updated enero 21, 2026.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to Seattle that are best for you.

Fly from

Barcelona-El Prat

Fly to

Seattle

Route

Depart

Return

Price

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jue. 2/5

12:30 pm-10:07 pm

1 stop18h 37m

Seattle/Tacoma Intl

lun. 2/9

6:00 am-8:50 am

1 stop17h 50m

$642

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

lun. 2/2

10:40 am-7:18 pm

1 stop17h 38m

Seattle/Tacoma Intl

mar. 2/17

6:44 am-8:50 am

1 stop17h 06m

$642

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jue. 4/2

2:05 pm-4:44 pm

1 stop35h 39m

Seattle/Tacoma Intl

sáb. 4/18

7:00 pm-2:30 pm

2 stops34h 30m

$647

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

mié. 2/11

10:40 am-9:47 pm

1 stop20h 07m

Seattle/Tacoma Intl

dom. 3/1

6:50 pm-8:05 pm

1 stop16h 15m

$650

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

lun. 2/2

10:40 am-11:51 pm

1 stop22h 11m

Seattle/Tacoma Intl

lun. 2/16

6:50 pm-10:25 am

1 stop30h 35m

$652

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

lun. 2/2

10:40 am-7:18 pm

1 stop17h 38m

Seattle/Tacoma Intl

mar. 2/17

1:25 pm-2:45 pm

1 stop16h 20m

$654

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

sáb. 1/31

10:40 am-7:18 pm

1 stop17h 38m

Seattle/Tacoma Intl

mar. 2/10

8:35 am-8:50 am

1 stop15h 15m

$657

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

sáb. 1/31

12:30 pm-10:07 pm

1 stop18h 37m

Seattle/Tacoma Intl

mar. 2/10

8:35 am-8:50 am

1 stop15h 15m

$663

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

mar. 1/27

10:40 am-9:47 pm

1 stop20h 07m

Seattle/Tacoma Intl

mar. 2/3

8:04 am-12:40 pm

2 stops19h 36m

$663

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

lun. 2/2

10:10 am-10:07 pm

2 stops20h 57m

Seattle/Tacoma Intl

mar. 2/17

6:50 pm-10:30 pm

1 stop18h 40m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 20 results
1
2

Compare providers for flights from Barcelona-El Prat to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Barcelona-El Prat to Seattle in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*2 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Barcelona-El Prat Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Barcelona-El Prat Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Barcelona-El Prat Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Barcelona-El Prat Airport-Seattle flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Barcelona-El Prat Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Barcelona-El Prat to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Barcelona-El Prat with our price prediction graph.
Estimated round-trip 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 Barcelona-El Prat Airport to Seattle

How far ahead should I book a flight from Barcelona-El Prat Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Barcelona-El Prat to Seattle. Price data was last updated on January 16, 2026.

The price you pay for your flight from Barcelona-El Prat Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 13 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Barcelona-El Prat Airport to Seattle?

Currently, February is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Seattle (average of $335). Flying from Barcelona-El Prat Airport to Seattle in July is currently the most expensive (average of $835). 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.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated enero 21, 2026.
See what other customers who have flown with Delta, KLM, and Lufthansa from Barcelona-El Prat Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,085 reviews

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,085 reviews
Delta
7.9
Good
8,085 reviews

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
KLM
7.7
Good
1,442 reviews
Delta
7.9
Good
8,085 reviews

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,736 reviews
Delta
7.9
Good
8,085 reviews

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,691 reviews
Delta
7.9
Good
8,085 reviews

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Barcelona-El Prat to Seattle. 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 Seattle from Barcelona-El Prat?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Barcelona-El Prat to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Barcelona-El Prat; the airport handles an average of 0 inbound flights from Barcelona-El Prat per day. You should also have plenty of airline options to choose from since 4 airlines have flights to the Seattle airport from Barcelona-El Prat. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • How long is the flight from Barcelona-El Prat Airport to Seattle?

    Airlines like American Airlines, Finnair, and British Airways fly from Barcelona-El Prat Airport to Seattle in about 17h 38m. The time it takes to get you to your destination can typically vary by up to 2h 29m. Barcelona-El Prat Airport and Seattle are separated by a distance of 5421 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Barcelona-El Prat Airport to Seattle round-trip?

    According to our current data, KLM ($677), Lufthansa ($712), and Delta ($763) offers the cheapest pricing from Barcelona-El Prat Airport to Seattle. Users have found that KLM is 20% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Barcelona-El Prat Airport to Seattle one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as $266. Users have also found prices from $494 and $500 on British Airways and Icelandair, respectively.

  • Can I find deals for flights from Barcelona-El Prat to Seattle that include hotel bookings?

    Yes. In addition to deals on Barcelona-El Prat to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Barcelona-El Prat to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Barcelona-El Prat to Seattle.

  • Can I find deals for business class flights from Barcelona-El Prat to Seattle?

    Yes. Cheapflights offers flight deals from Barcelona-El Prat to Seattle 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 Barcelona-El Prat Airport to Seattle?

    Currently, February is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Seattle (average of $335). Flying from Barcelona-El Prat Airport to Seattle in July is currently the most expensive (average of $835). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
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Edmonds
Renton
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Kirkland
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Alternative routes for Barcelona-El Prat to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Barcelona-El Prat to Portland flights
Barcelona-El Prat to Spokane flights

Top 4 airlines flying from Barcelona-El Prat to Seattle

Discover the top 4 airlines that operate flights from Barcelona-El Prat to Seattle. 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 2,558,603 searches. Data last updated enero 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$677Average$851FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$712Average$805FlexibilityNo cancel feeOn-time76%
DeltaCheapest$763Average$840FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$768Average$841FlexibilityNo cancel feeOn-time70%

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