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$416+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — SEA
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Barcelona-El Prat to Seattle/Tacoma Intl are usually found in March or May, 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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$601
(Gotogate)

One-way from

$416
(Kiwi.com)

Popular in

June

Cheapest in

March

Average price

$844
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
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One-way flight from Barcelona-El Prat to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 7% potential increase in price ($71 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This Gotogate deal was found by Cheapflights users on 4/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/297:00 pmBCN - SEA
1 stop27h 50mScandinavian Airlines
Wed 6/114:00 pmSEA - BCN
1 stop17h 10mScandinavian Airlines
Deal found 4/17$601
This Mytrip deal was found by Cheapflights users on 4/17. 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.
Thu 5/2911:00 amBCN - SEA
2 stops35h 50mMultiple Airlines
Wed 6/114:00 pmSEA - BCN
2 stops24h 30mMultiple Airlines
Deal found 4/17$621
This Iberia deal was found by Cheapflights users on 4/17. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/147:40 amBCN - SEA
1 stop19h 40mIberia
Wed 8/69:55 amSEA - BCN
1 stop15h 15mIberia
Deal found 4/17$717
This Gotogate deal was found by Cheapflights users on 4/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:50 amBCN - SEA
1 stop14h 35mLufthansa
Wed 5/146:50 pmSEA - BCN
1 stop14h 05mLufthansa
Deal found 4/16$734
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 5/76:50 amBCN - SEA
2 stops16h 23mUnited Airlines
Wed 5/287:20 amSEA - BCN
1 stop15h 30mUnited Airlines
Deal found 4/17$757
This lol.travel deal was found by Cheapflights users on 4/17. 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.
Thu 5/156:50 amBCN - SEA
2 stops16h 23mAir Canada
Thu 5/227:20 amSEA - BCN
2 stops19h 35mAir Canada
Deal found 4/17$763
This Delta deal was found by Cheapflights users on 4/17. 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.
Thu 5/86:20 amBCN - SEA
2 stops21h 10mDelta
Thu 5/151:30 pmSEA - BCN
1 stop17h 10mDelta
Deal found 4/17$776
This SWISS deal was found by Cheapflights users on 4/17. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/299:40 amBCN - SEA
2 stops20h 31mSWISS
Wed 6/111:45 pmSEA - BCN
2 stops15h 20mSWISS
Deal found 4/17$853
This Priceline deal was found by Cheapflights users on 4/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/237:40 amBCN - SEA
2 stops20h 19mBritish Airways
Wed 4/3011:20 amSEA - BCN
1 stop14h 10mBritish Airways
Deal found 4/16$894
This FlightHub deal was found by Cheapflights users on 4/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/256:30 pmBCN - SEA
1 stop25h 05mTurkish Airlines
Mon 6/307:10 pmSEA - BCN
1 stop30h 25mTurkish Airlines
Deal found 4/16$902
This Expedia deal was found by Cheapflights users on 4/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:20 amBCN - SEA
1 stop14h 20mKLM
Wed 6/111:35 pmSEA - BCN
2 stops17h 50mKLM
Deal found 4/17$1,203
This ITA Airways deal was found by Cheapflights users on 4/17. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:20 amBCN - SEA
2 stops25h 23mITA Airways
Wed 6/117:20 amSEA - BCN
2 stops18h 30mITA Airways
Deal found 4/17$1,336

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 April 17, 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

Thu 5/29

7:00 pm-1:50 pm

1 stop27h 50m

Seattle/Tacoma Intl

Wed 6/11

4:00 pm-6:10 pm

1 stop17h 10m

$601

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 5/29

11:00 am-1:50 pm

2 stops35h 50m

Seattle/Tacoma Intl

Wed 6/11

4:00 pm-1:30 am

2 stops24h 30m

$621

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Wed 5/14

7:40 am-6:20 pm

1 stop19h 40m

Seattle/Tacoma Intl

Wed 8/6

9:55 am-10:10 am

1 stop15h 15m

$717

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Wed 5/7

6:50 am-12:25 pm

1 stop14h 35m

Seattle/Tacoma Intl

Wed 5/14

6:50 pm-5:55 pm

1 stop14h 05m

$734

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Wed 5/7

6:50 am-2:13 pm

2 stops16h 23m

Seattle/Tacoma Intl

Wed 5/28

7:20 am-7:50 am

1 stop15h 30m

$757

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 5/15

6:50 am-2:13 pm

2 stops16h 23m

Seattle/Tacoma Intl

Thu 5/22

7:20 am-11:55 am

2 stops19h 35m

$763

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 5/8

6:20 am-6:30 pm

2 stops21h 10m

Seattle/Tacoma Intl

Thu 5/15

1:30 pm-3:40 pm

1 stop17h 10m

$776

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 5/29

9:40 am-9:11 pm

2 stops20h 31m

Seattle/Tacoma Intl

Wed 6/11

1:45 pm-2:05 pm

2 stops15h 20m

$853

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Wed 6/25

6:30 pm-10:35 am

1 stop25h 05m

Seattle/Tacoma Intl

Mon 6/30

7:10 pm-10:35 am

1 stop30h 25m

$902

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 5/29

6:20 am-11:40 am

1 stop14h 20m

Seattle/Tacoma Intl

Wed 6/11

1:35 pm-4:25 pm

2 stops17h 50m

$1,203

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 22 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Barcelona-El Prat Airport-Seattle flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 11, 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 April 17, 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 April 17, 2025.
To help decide which airline to fly from Barcelona to Seattle, see what other customers have to say about Delta, KLM and SWISS. 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
7,917 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

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
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

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
1,329 reviews
Delta
8.0
Very good
7,917 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

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
1,580 reviews
Delta
8.0
Very good
7,917 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

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
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,917 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

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
Turkish Airlines
7.3
Good
3,769 reviews
Delta
8.0
Very good
7,917 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

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 ($601), Iberia ($717), and Lufthansa ($734) offers the cheapest pricing from Barcelona-El Prat Airport to Seattle. Users have found that Scandinavian Airlines is 29% 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 $416. Users have also found prices from $553 and $637 on Icelandair and Aer Lingus, 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
Renton
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Aberdeen
Kent
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

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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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$633Average$944FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$652Average$875FlexibilityNo cancel feeOn-time77%
DeltaCheapest$686Average$784FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$689Average$933FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$720Average$1,019FlexibilityNo cancel feeOn-time70%

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