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$209+ Cheap flights from Seattle (SEA) to Barcelona

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Mar 28 — Apr 41
Sat 3/28
Sat 4/4
1 adult, Economy
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Cheap flight deals from Seattle to Barcelona

Cheapest flights from Seattle to Barcelona
Explore the most affordable flight options available from Seattle to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 26, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/23. 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.
Wed 4/157:10 pm
SEA
-
BCN
1 stop18h 20m
Aer Lingus
Wed 4/2211:00 am
BCN
-
SEA
1 stop15h 10m
Aer Lingus
Deal found 2/23$478
This eDestinos deal was found by Cheapflights users on 2/24. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:55 pm
SEA
-
BCN
1 stop17h 15m
Scandinavian Airlines
Mon 8/317:00 pm
BCN
-
SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/24$481
This FlightHub deal was found by Cheapflights users on 2/24. 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.
Sat 9/53:55 pm
SEA
-
BCN
1 stop32h 50m
Scandinavian Airlines
Sat 9/197:00 pm
BCN
-
SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/24$487
This FlightHub deal was found by Cheapflights users on 2/23. 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.
Sun 8/303:55 pm
SEA
-
BCN
1 stop17h 15m
Scandinavian Airlines
Mon 9/77:00 pm
BCN
-
SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/23$493
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
Fri 9/183:55 pm
SEA
-
BCN
1 stop32h 00m
Scandinavian Airlines
Sat 9/267:00 pm
BCN
-
SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/25$502
This KAYAK deal was found by Cheapflights users on 2/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:55 pm
SEA
-
BCN
1 stop32h 00m
Scandinavian Airlines
Thu 9/2412:25 pm
BCN
-
SEA
1 stop34h 20m
Scandinavian Airlines
Deal found 2/24$506
This KAYAK deal was found by Cheapflights users on 2/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:55 pm
SEA
-
BCN
1 stop32h 00m
Scandinavian Airlines
Fri 9/2510:25 am
BCN
-
SEA
1 stop36h 20m
Scandinavian Airlines
Deal found 2/24$516
This oojo deal was found by Cheapflights users on 2/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:55 pm
SEA
-
BCN
1 stop17h 15m
Scandinavian Airlines
Sat 8/227:00 pm
BCN
-
SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/25$518
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
Tue 4/213:40 pm
SEA
-
BCN
2 stops21h 35m
Multiple Airlines
Wed 5/63:00 pm
BCN
-
SEA
1 stop27h 40m
Multiple Airlines
Deal found 2/25$520
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 4/237:00 pm
SEA
-
BCN
2 stops41h 40m
Multiple Airlines
Wed 5/63:00 pm
BCN
-
SEA
1 stop27h 40m
Multiple Airlines
Deal found 2/25$522

Find flight deals from Seattle to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Barcelona (S37). 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 February 26, 2026.

Round-trip from

$478
(Kiwi.com)

One-way from

$209
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$486
From Seattle/Tacoma Intl to Barcelona
Search Deals
One-way flight from Seattle/Tacoma Intl to Barcelona
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($251 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Barcelona 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 February 26, 2026.
Use the filters below to find and compare flights from Seattle to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 4/26

7:00 am-6:10 pm

2 stops26h 10m

Barcelona-El Prat

Mon 5/4

10:35 am-11:51 pm

2 stops22h 16m

$649

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 3/24

11:25 am-2:00 pm

2 stops18h 35m

Barcelona-El Prat

Tue 3/31

11:10 am-10:10 pm

2 stops20h 00m

$696

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 4/17

11:10 am-2:50 pm

2 stops18h 40m

Barcelona-El Prat

Sat 4/25

10:05 am-5:38 pm

1 stop16h 33m

$792

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 4/10

8:00 am-9:20 am

1 stop16h 20m

Barcelona-El Prat

Sat 4/18

3:15 pm-4:37 pm

1 stop34h 22m

$798

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 4/3

12:54 pm-10:25 pm

2 stops24h 31m

Barcelona-El Prat

Thu 4/9

12:15 pm-7:00 pm

2 stops39h 45m

$913

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/22

3:53 pm-2:45 pm

2 stops37h 52m

Barcelona-El Prat

Fri 5/8

3:45 pm-8:40 pm

1 stop13h 55m

$931

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 4/5

11:59 pm-8:20 am

2 stops23h 21m

Barcelona-El Prat

Sun 4/12

11:15 am-11:48 am

2 stops33h 33m

$1,020

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 5/15

8:38 am-6:15 pm

2 stops24h 37m

Barcelona-El Prat

Fri 5/22

12:15 pm-8:53 pm

3 stops41h 38m

$1,045

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 5/11

6:40 pm-10:45 pm

1 stop19h 05m

Barcelona-El Prat

Sun 5/24

1:20 pm-3:33 pm

Nonstop11h 13m

$1,160

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 6/12

6:00 pm-10:10 pm

1 stop19h 10m

Barcelona-El Prat

Mon 7/27

10:15 am-4:10 pm

1 stop14h 55m

$1,186

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/25

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Seattle to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona from Seattle 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 Seattle to Barcelona

How far ahead should I book a flight from Seattle to Barcelona?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Barcelona. Price data was last updated on February 20, 2026.

To ensure you get the cheapest price possible for a flight from Seattle to Barcelona, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Barcelona?

Currently, January is the cheapest month in which you can book a flight from Seattle to Barcelona (average of $353). Flying from Seattle to Barcelona in June is currently the most expensive (average of $807). 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 Barcelona

Get insights into the airlines that provide service to Barcelona. 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 Barcelona. Reviews last updated February 26, 2026.
Read through reviews of airlines operating flights from Seattle to Barcelona, such as Delta, United Airlines, and Icelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,243 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

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
8,243 reviews
Delta
7.9
Good
8,243 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

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.
United Airlines
7.4
Good
9,350 reviews
Delta
7.9
Good
8,243 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

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.
Icelandair
7.1
Good
617 reviews
Delta
7.9
Good
8,243 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

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
7,814 reviews
Delta
7.9
Good
8,243 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

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
7,771 reviews
Delta
7.9
Good
8,243 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Boarding

8.1

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 Seattle to Barcelona. 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 from for flights from Seattle to Barcelona?

    For a flight from Seattle to Barcelona, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 outbound flights to Barcelona per day. 15 airlines have flights to Barcelona from Seattle/Tacoma Intl on a regular basis.

  • How long is the flight from Seattle to Barcelona?

    Departing from Seattle to Barcelona will take you 16h 20m. The distance from Seattle to Barcelona is about 5421 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Seattle to Barcelona is Icelandair. Our recent data shows that you can find tickets from as low as $367 on this airline. Additional options worth looking into are Scandinavian Airlines and Aer Lingus, starting at $461 and $476 round-trip. Users have found that Icelandair is 52% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $245. However, be on the lookout for offers from Scandinavian Airlines and SWISS, as they are both options that can get you from Seattle to Barcelona for a low price.

  • What are the cheapest flights from Seattle to Barcelona?

    On average you can expect to pay $789 for a flight from Seattle to Barcelona. The cheapest flight overall is $598 while the most popular route, (Seattle/Tacoma Intl - Barcelona-El Prat) is currently priced at $481.

  • Where are the most common layover locations when flying from Seattle to Barcelona?

    Seattle to Barcelona flights have a layover in London most often. Frankfurt am Main is the second most popular location for layovers on flights from Seattle to Barcelona. Reykjavik comes next as the third most popular layover location for Seattle to Barcelona flights.

  • What are some popular things to do or see while on a layover in London?

    Most London visitors opt to spend their time experiencing Hyde Park, Buckingham Palace, and Piccadilly Circus. Hyde Park, Buckingham Palace and Piccadilly Circus are located about 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow if you are interested in checking them out. Those on a layover in London in need of a rental car can book one at London Heathrow for about $30.

  • What are some popular points of interest to see during a layover in Frankfurt am Main?

    Most Frankfurt am Main visitors opt to spend their time at Römerberg, Oper Frankfurt, and Konstablerwache. Those on a layover in Frankfurt am Main interested in visiting Römerberg, Oper Frankfurt, or Konstablerwache can do so by traveling 7.4 mi, 7.0 mi, and 7.7 mi, respectively from Frankfurt am Main. Those landing in Frankfurt am Main looking to spend some time exploring during their layover can rent a car for about $49 per day.

  • What are points of interest worth seeing during a layover in Reykjavik?

    The majority of Reykjavik visitors spend their time at Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool. Those on a layover in Reykjavik interested in visiting Hallgrímskirkja, Harpa, or Laugardalslaug Geothermal Pool can do so by traveling 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers can book a car rental at Reykjavik Keflavik Intl for about $57 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Seattle to Barcelona flights?

    Flights departing from Seattle and landing in Barcelona layover in Paris least frequently. Paris is followed by Amsterdam in terms of the least popular layover location on flights from Seattle to Barcelona. Calgary sees the third fewest flights with layovers for the Seattle to Barcelona route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Barcelona 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 Seattle to Barcelona?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Barcelona (average of $353). Flying from Seattle to Barcelona in June is currently the most expensive (average of $807). 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

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Alternative routes for Seattle to Barcelona

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

Top 10 airlines flying from Seattle to Barcelona

Discover the top 10 airlines that operate flights from Seattle to Barcelona. 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 February 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$367Average$525FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$461Average$534FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$476Average$711FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$477Average$666FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$482Average$787FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$483Average$862FlexibilityNo cancel feeOn-time76%
DeltaCheapest$486Average$954FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$493Average$752FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$502Average$791FlexibilityNo cancel feeOn-time71%
CondorCheapest$567Average$781FlexibilityNo cancel feeOn-time76%

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