Seattle

$50+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — SEA
Oct 17 — Oct 241
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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 63 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 September 17, 2025.

Round-trip from

$567
(Kiwi.com)

One-way from

$50
(CheapOair)

Popular in

June

Cheapest in

March

Average price

$809
From Barcelona-El Prat to Seattle/Tacoma Intl
One-way flight from Barcelona-El Prat to Seattle/Tacoma Intl
Highest demand for flights based on searches. 5% potential increase in price ($47 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Average for round-trip flights in September 2025

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 September 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 11/66:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Sun 11/167:00 amSEA - BCN
1 stop21h 20mMultiple Airlines
Deal found 9/15$567
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 11/66:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Sun 11/233:10 pmSEA - BCN
2 stops19h 20mMultiple Airlines
Deal found 9/15$596
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 11/66:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Mon 11/243:10 pmSEA - BCN
2 stops19h 05mMultiple Airlines
Deal found 9/15$600
This Icelandair deal was found by Cheapflights users on 9/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1111:50 amBCN - SEA
1 stop14h 10mIcelandair
Sun 11/232:35 pmSEA - BCN
1 stop13h 45mIcelandair
Deal found 9/15$609
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 11/66:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Tue 11/253:10 pmSEA - BCN
2 stops23h 45mMultiple Airlines
Deal found 9/15$626
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 11/66:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Thu 11/203:10 pmSEA - BCN
2 stops22h 35mMultiple Airlines
Deal found 9/15$632
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sat 11/86:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Sun 11/233:10 pmSEA - BCN
2 stops19h 20mMultiple Airlines
Deal found 9/15$640
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sat 11/86:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Sat 11/223:20 pmSEA - BCN
2 stops33h 10mMultiple Airlines
Deal found 9/15$641
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sat 11/86:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Mon 11/243:10 pmSEA - BCN
2 stops19h 05mMultiple Airlines
Deal found 9/15$644
This Expedia deal was found by Cheapflights users on 9/15. 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 10/2311:00 amBCN - SEA
1 stop15h 50mAer Lingus
Wed 11/58:05 pmSEA - BCN
1 stop15h 20mAer Lingus
Deal found 9/15$661
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sat 11/86:10 pmBCN - SEA
1 stop25h 25mMultiple Airlines
Tue 11/253:10 pmSEA - BCN
2 stops23h 45mMultiple Airlines
Deal found 9/15$670

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 September 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

Tue 11/11

11:50 am-5:00 pm

1 stop14h 10m

Seattle/Tacoma Intl

Wed 11/26

2:35 pm-1:20 pm

1 stop13h 45m

$609

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 10/9

1:15 pm-10:59 am

1 stop30h 44m

Seattle/Tacoma Intl

Sat 10/11

7:00 am-7:50 am

2 stops39h 50m

$609

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Mon 11/10

11:30 am-6:20 pm

1 stop15h 50m

Seattle/Tacoma Intl

Sun 11/23

8:05 pm-8:25 pm

1 stop15h 20m

$632

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 3/5

10:40 am-7:03 pm

1 stop17h 23m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-7:45 pm

1 stop15h 55m

$634

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 11/8

6:10 pm-10:35 am

1 stop25h 25m

Seattle/Tacoma Intl

Fri 11/21

3:10 pm-8:00 pm

2 stops19h 50m

$640

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 3/5

10:40 am-11:09 pm

1 stop21h 29m

Seattle/Tacoma Intl

Mon 3/9

8:00 am-8:00 am

2 stops16h 00m

$659

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 1/31

10:40 am-9:19 pm

1 stop19h 39m

Seattle/Tacoma Intl

Tue 2/10

7:44 am-8:50 am

1 stop16h 06m

$663

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 1/31

10:40 am-7:03 pm

1 stop17h 23m

Seattle/Tacoma Intl

Tue 2/10

7:44 am-8:50 am

1 stop16h 06m

$667

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 1/31

6:40 am-4:55 pm

1 stop19h 15m

Seattle/Tacoma Intl

Mon 2/9

12:27 am-8:50 am

1 stop23h 23m

$701

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 10/23

10:45 am-8:46 pm

1 stop19h 01m

Seattle/Tacoma Intl

Wed 11/5

11:20 pm-9:00 am

1 stop24h 40m

$704

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 22 results
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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 September 12, 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 60 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 June is currently the most expensive (average of $387). 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 September 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.

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 September 17, 2025.
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.
8.0
Very good

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good
8.0
Very good

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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 Icelandair, United Airlines, and Aer Lingus fly from Barcelona-El Prat Airport to Seattle in about 14h 10m. The time it takes to get you to your destination can typically vary by up to 16h 34m. 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, Delta ($286), KLM ($677), and Lufthansa ($684) offers the cheapest pricing from Barcelona-El Prat Airport to Seattle. Users have found that Delta is 67% cheaper than the other options available to this destination.

  • 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 June is currently the most expensive (average of $387). 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
SeaTac
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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.

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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$286Average$868FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$677Average$962FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$684Average$763FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$768Average$973FlexibilityNo cancel feeOn-time70%

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