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$377+ Cheap flights from Barcelona-El Prat (BCN) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — SEA
avr. 2 — avr. 91
mer. 4/2
mer. 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Barcelona-El Prat to Seattle/Tacoma Intl are usually found in May or November, booked 85 days in advance, depart on a Tuesday or Saturday and return on a Monday

Cheap 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 mars 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$377
(Mytrip)

Popular in

July

Cheapest in

May

Average price

$738
Provider with most accurate pricing for Barcelona-El Prat-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Barcelona-El Prat-Seattle/Tacoma Intl flights.
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From Barcelona-El Prat to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find 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 mars 28, 2025.

This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 5/227:00 pmBCN - SEA
1 stop27h 50mScandinavian Airlines
mer. 6/44:00 pmSEA - BCN
1 stop17h 10mScandinavian Airlines
Deal found 3/27$377
This Trip.com deal was found by Cheapflights users on 3/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 5/225:50 amBCN - SEA
2 stops23h 50mMultiple Airlines
mer. 6/47:00 pmSEA - BCN
2 stops20h 45mMultiple Airlines
Deal found 3/27$639
This Finnair deal was found by Cheapflights users on 3/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/1210:05 amBCN - SEA
1 stop14h 55mFinnair
lun. 5/195:40 pmSEA - BCN
1 stop17h 25mFinnair
Deal found 3/28$641
This lol.travel deal was found by Cheapflights users on 3/27. 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.
jeu. 4/2412:20 pmBCN - SEA
1 stop19h 39mIberia
mer. 5/77:30 amSEA - BCN
1 stop17h 40mIberia
Deal found 3/27$667
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 5/146:50 amBCN - SEA
2 stops24h 23mUnited Airlines
dim. 5/257:00 amSEA - BCN
2 stops16h 20mUnited Airlines
Deal found 3/27$724
This EaseMyTrip deal was found by Cheapflights users on 3/28. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/1212:15 pmBCN - SEA
1 stop16h 22mAir Canada
lun. 5/1911:30 amSEA - BCN
2 stops41h 35mAir Canada
Deal found 3/28$730
This WestJet deal was found by Cheapflights users on 3/27. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 6/72:25 pmBCN - SEA
2 stops56h 44mWestJet
sam. 6/141:50 pmSEA - BCN
1 stop13h 35mWestJet
Deal found 3/27$739
This lol.travel deal was found by Cheapflights users on 3/27. 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.
mar. 5/279:40 amBCN - SEA
2 stops17h 53mSWISS
lun. 6/94:25 pmSEA - BCN
1 stop17h 45mSWISS
Deal found 3/27$764
This Delta deal was found by Cheapflights users on 3/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/246:20 amBCN - SEA
1 stop14h 25mDelta
jeu. 5/11:30 pmSEA - BCN
1 stop16h 20mDelta
Deal found 3/28$767
This KLM deal was found by Cheapflights users on 3/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/255:20 pmBCN - SEA
1 stop27h 15mKLM
sam. 9/611:15 amSEA - BCN
1 stop15h 40mKLM
Deal found 3/27$770
This Orbitz deal was found by Cheapflights users on 3/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/27:40 amBCN - SEA
1 stop19h 40mBritish Airways
mer. 4/91:30 pmSEA - BCN
1 stop15h 45mBritish Airways
Deal found 3/27$810
This lol.travel deal was found by Cheapflights users on 3/27. 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. 7/72:45 pmBCN - SEA
1 stop28h 50mTurkish Airlines
dim. 7/207:10 pmSEA - BCN
1 stop19h 00mTurkish Airlines
Deal found 3/27$858

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 mars 28, 2025.
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

jeu. 5/22

7:00 pm-1:50 pm

1 stop27h 50m

Seattle/Tacoma Intl

mer. 6/4

4:00 pm-6:10 pm

1 stop17h 10m

$377

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jeu. 5/22

5:50 am-8:40 pm

2 stops23h 50m

Seattle/Tacoma Intl

mer. 6/4

7:00 pm-12:45 am

2 stops20h 45m

$639

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

lun. 5/12

10:05 am-4:00 pm

1 stop14h 55m

Seattle/Tacoma Intl

lun. 5/19

5:40 pm-8:05 pm

1 stop17h 25m

$641

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jeu. 4/24

12:20 pm-10:59 pm

1 stop19h 39m

Seattle/Tacoma Intl

mer. 5/7

7:30 am-10:10 am

1 stop17h 40m

$667

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

mer. 5/14

6:50 am-10:13 pm

2 stops24h 23m

Seattle/Tacoma Intl

dim. 5/25

7:00 am-8:20 am

2 stops16h 20m

$724

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

lun. 5/12

12:15 pm-7:37 pm

1 stop16h 22m

Seattle/Tacoma Intl

lun. 5/19

11:30 am-2:05 pm

2 stops41h 35m

$730

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

sam. 6/7

2:25 pm-2:09 pm

2 stops56h 44m

Seattle/Tacoma Intl

sam. 6/14

1:50 pm-12:25 pm

1 stop13h 35m

$739

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

mar. 5/27

9:40 am-6:33 pm

2 stops17h 53m

Seattle/Tacoma Intl

lun. 6/9

4:25 pm-7:10 pm

1 stop17h 45m

$764

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jeu. 4/24

6:20 am-11:45 am

1 stop14h 25m

Seattle/Tacoma Intl

jeu. 5/1

1:30 pm-2:50 pm

1 stop16h 20m

$767

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

lun. 8/25

5:20 pm-11:35 am

1 stop27h 15m

Seattle/Tacoma Intl

sam. 9/6

11:15 am-11:55 am

1 stop15h 40m

$770

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 30 results
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 FlightHub the most. FlightHub 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 March 21, 2025.

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 85 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, January is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Seattle (average of $238). Flying from Barcelona-El Prat Airport to Seattle in July is currently the most expensive (average of $411). 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.

What is the cheapest time of day to fly from BCN to SEA?

Find hourly flight availability from Barcelona-El Prat to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mars 28, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 29% on flights from Barcelona-El Prat Airport to Seattle by exploring options for tickets in the morning.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 mars 28, 2025.
To help decide which airline to fly from Barcelona to Seattle, see what other customers have to say about Delta, KLM and Finnair. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,570 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,424 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 5 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.

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

    According to our current data, Scandinavian Airlines ($377), Finnair ($624), and United Airlines ($686) offers the cheapest pricing from Barcelona-El Prat Airport to Seattle. Users have found that Scandinavian Airlines is 55% 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 Scandinavian Airlines. According to our data, you can fly for as low as $431. Users have also found prices from $564 and $579 on WestJet 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, January is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Seattle (average of $238). Flying from Barcelona-El Prat Airport to Seattle in July is currently the most expensive (average of $411). 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 Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Lacey
Ocean Shores
Leavenworth
Federal Way
Olympia
Cle Elum
Centralia
Mukilteo
Aberdeen
Shoreline
Lynnwood
Shelton
Silverdale
Redmond
Monroe

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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 5 airlines flying from Barcelona-El Prat to Seattle

Discover the top 5 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 mars 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$633Average$944FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$652Average$875FlexibilityNo cancel feeOn-time77%
KLMCheapest$677Average$933FlexibilityNo cancel feeOn-time75%
DeltaCheapest$686Average$784FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$720Average$841FlexibilityNo cancel feeOn-time70%
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