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$248+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 3, 2026.

This oojo deal was found by Cheapflights users on 2/3. 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.
Sun 5/33:40 pm
SEA
-
BCN
1 stop14h 05m
Icelandair
Sat 5/93:45 pm
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 2/3$405
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 4/223:40 pm
SEA
-
BCN
1 stop14h 05m
Icelandair
Wed 4/293:45 pm
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 2/2$408
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 4/143:40 pm
SEA
-
BCN
1 stop14h 05m
Icelandair
Mon 4/204:00 pm
BCN
-
SEA
1 stop13h 40m
Icelandair
Deal found 2/2$409
This Kiwi.com deal was found by Cheapflights users on 2/2. 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
1 stop34h 45m
Icelandair
Wed 4/293:45 pm
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 2/2$410
This Trip.com deal was found by Cheapflights users on 2/1. 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.
Tue 4/217:00 pm
SEA
-
BCN
1 stop34h 45m
Icelandair
Sat 5/23:45 pm
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 2/1$415
This Icelandair deal was found by Cheapflights users on 2/1. 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 4/217:00 pm
SEA
-
BCN
1 stop34h 45m
Icelandair
Wed 4/293:45 pm
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 2/1$418
This Icelandair deal was found by Cheapflights users on 2/1. 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.
Wed 4/223:40 pm
SEA
-
BCN
1 stop14h 05m
Icelandair
Mon 5/43:45 pm
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 2/1$424
This Icelandair deal was found by Cheapflights users on 2/1. 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 4/217:00 pm
SEA
-
BCN
1 stop34h 45m
Icelandair
Mon 5/43:45 pm
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 2/1$426
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sun 3/13:10 pm
SEA
-
BCN
1 stop22h 55m
Lufthansa
Sun 3/87:40 am
BCN
-
SEA
1 stop14h 40m
Lufthansa
Deal found 2/2$438
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/63:10 pm
SEA
-
BCN
1 stop14h 35m
Lufthansa
Fri 3/136:50 am
BCN
-
SEA
1 stop14h 20m
Lufthansa
Deal found 2/1$443

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 3, 2026.

Round-trip from

$404
(oojo)

One-way from

$248
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$579
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. 25% potential increase in price ($277 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($41 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 3, 2026.
Use the filters below to find and compare flights from Seattle to Barcelona that are best for you.

Fly from

Seattle

Fly to

Barcelona

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/15

2:24 pm-1:15 pm

1 stop13h 51m

Barcelona-El Prat

Thu 4/30

1:15 pm-3:48 pm

2 stops35h 33m

$472

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 3/2

11:59 pm-9:00 am

2 stops24h 01m

Barcelona-El Prat

Tue 3/10

12:35 pm-10:45 pm

2 stops42h 10m

$472

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 4/21

8:00 am-8:20 am

1 stop15h 20m

Barcelona-El Prat

Tue 4/28

1:15 pm-4:41 pm

2 stops36h 26m

$472

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 4/14

11:59 pm-1:15 pm

1 stop28h 16m

Barcelona-El Prat

Thu 4/30

1:15 pm-10:20 am

1 stop30h 05m

$473

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/22

6:50 pm-10:25 pm

1 stop18h 35m

Barcelona-El Prat

Tue 4/28

1:15 pm-4:41 pm

2 stops36h 26m

$476

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 4/11

11:59 pm-1:15 pm

1 stop28h 16m

Barcelona-El Prat

Tue 4/21

1:15 pm-4:37 pm

2 stops36h 22m

$477

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 4/12

5:00 am-1:15 pm

2 stops23h 15m

Barcelona-El Prat

Tue 4/21

1:15 pm-4:37 pm

2 stops36h 22m

$477

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 4/14

11:59 pm-1:15 pm

1 stop28h 16m

Barcelona-El Prat

Tue 4/21

1:15 pm-4:37 pm

2 stops36h 22m

$477

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 4/19

7:00 am-1:15 pm

1 stop21h 15m

Barcelona-El Prat

Tue 4/28

6:40 am-12:20 pm

1 stop14h 40m

$481

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/15

8:00 am-8:20 am

1 stop15h 20m

Barcelona-El Prat

Wed 4/29

6:40 am-12:20 pm

1 stop14h 40m

$481

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

Showing 1-10 of 20 results
1
2

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 January 30, 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 $861). 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 3, 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
8,139 reviews

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

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
8,139 reviews
Delta
7.9
Good
8,139 reviews

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

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
9,236 reviews
Delta
7.9
Good
8,139 reviews

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

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
606 reviews
Delta
7.9
Good
8,139 reviews

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

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
7,759 reviews
Delta
7.9
Good
8,139 reviews

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

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
7,712 reviews
Delta
7.9
Good
8,139 reviews

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

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 13h 51m. The distance from Seattle to Barcelona is about 5421 mi.

  • 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 53% 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 $800 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 $384.

  • 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 $33.

  • 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 $45 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 $54 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 Amsterdam least frequently. Amsterdam is followed by Calgary in terms of the least popular layover location on flights from Seattle to Barcelona. Paris 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 $861). 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
Spokane 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 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$367Average$559FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$461Average$534FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$476Average$723FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$477Average$666FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$482Average$792FlexibilityNo cancel feeOn-time69%
DeltaCheapest$486Average$994FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$493Average$857FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$499Average$783FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$502Average$791FlexibilityNo cancel feeOn-time71%
IberiaCheapest$572Average$819FlexibilityNo cancel feeOn-time77%

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