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$251+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
ene. 3 — ene. 101
sáb. 1/3
sáb. 1/10
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Barcelona are usually found in January or February, booked 4 days in advance, depart on a Friday or Tuesday and return on a Tuesday

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 diciembre 4, 2025.

This Mytrip deal was found by Cheapflights users on 12/4. 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.
mié. 12/108:10 amSEA - BCN
2 stops30h 10mMultiple Airlines
mié. 12/177:20 amBCN - SEA
2 stops23h 56mMultiple Airlines
Deal found 12/4$615
This CheapOair deal was found by Cheapflights users on 12/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/108:05 pmSEA - BCN
1 stop15h 20mAer Lingus
mié. 12/1711:30 amBCN - SEA
1 stop15h 50mAer Lingus
Deal found 12/3$670
This Ovago deal was found by Cheapflights users on 12/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/78:05 pmSEA - BCN
1 stop29h 45mAer Lingus
dom. 12/219:05 pmBCN - SEA
1 stop30h 15mAer Lingus
Deal found 12/3$718
This Scandinavian Airlines deal was found by Cheapflights users on 12/3. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:10 amSEA - BCN
2 stops26h 10mScandinavian Airlines
mié. 1/77:10 pmBCN - SEA
2 stops36h 15mScandinavian Airlines
Deal found 12/3$878
This Mytrip deal was found by Cheapflights users on 12/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/313:40 pmSEA - BCN
2 stops21h 25mMultiple Airlines
mié. 1/77:30 amBCN - SEA
2 stops23h 36mMultiple Airlines
Deal found 12/3$920
This Ovago deal was found by Cheapflights users on 12/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/316:50 pmSEA - BCN
1 stop33h 30mBritish Airways
mié. 1/712:20 pmBCN - SEA
2 stops37h 16mBritish Airways
Deal found 12/3$922
This Air Canada deal was found by Cheapflights users on 12/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/265:50 amSEA - BCN
2 stops18h 45mAir Canada
vie. 1/236:50 amBCN - SEA
2 stops21h 26mAir Canada
Deal found 12/4$981

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 diciembre 4, 2025.

Round-trip from

$447
(Kiwi.com)

One-way from

$251
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,115
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 ($275 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 diciembre 4, 2025.
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

sáb. 2/21

8:17 am-8:20 am

1 stop15h 03m

Barcelona-El Prat

sáb. 2/28

6:50 am-8:56 pm

2 stops23h 06m

$486

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

sáb. 2/21

6:10 am-8:00 am

2 stops16h 50m

Barcelona-El Prat

sáb. 2/28

10:15 am-10:22 pm

2 stops21h 07m

$488

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 3/1

7:10 am-6:20 pm

2 stops26h 10m

Barcelona-El Prat

lun. 3/30

10:35 am-9:48 pm

2 stops44h 13m

$520

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

mar. 3/3

7:10 am-6:05 pm

2 stops25h 55m

Barcelona-El Prat

mié. 4/1

4:25 pm-10:22 pm

2 stops38h 57m

$520

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

jue. 2/26

11:35 am-6:20 pm

2 stops21h 45m

Barcelona-El Prat

lun. 3/30

10:35 am-9:48 pm

2 stops44h 13m

$520

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 3/1

7:10 am-6:20 pm

2 stops26h 10m

Barcelona-El Prat

vie. 4/3

7:00 pm-9:48 pm

2 stops35h 48m

$590

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

mié. 3/4

2:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

mié. 4/1

3:45 pm-8:40 pm

1 stop13h 55m

$612

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 3/1

7:00 pm-10:40 am

1 stop30h 40m

Barcelona-El Prat

mar. 3/31

6:35 pm-5:15 pm

1 stop31h 40m

$648

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

mar. 3/3

11:35 am-6:05 pm

2 stops21h 30m

Barcelona-El Prat

dom. 3/29

11:55 am-10:22 pm

2 stops43h 27m

$690

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

vie. 2/27

11:35 am-6:20 pm

2 stops21h 45m

Barcelona-El Prat

dom. 3/29

11:55 am-10:22 pm

2 stops43h 27m

$690

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 23 results
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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 November 28, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Barcelona, you should look to book at least 4 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, October is the cheapest month in which you can book a flight from Seattle to Barcelona (average of $391). 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.

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

Find hourly flight availability from Seattle to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 4, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Barcelona in the evening. If you’re flexible enough to do this you can expect to save up to 59% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Seattle to Barcelona?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Barcelona. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Barcelona flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Seattle to Barcelona?

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 diciembre 4, 2025.
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
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

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
9,063 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

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
7.0
Good
584 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

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
7,612 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

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
7,559 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

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. 16 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 15h 03m. 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 $378 on this airline. Additional options worth looking into are Scandinavian Airlines and Air Canada, starting at $461 and $478 round-trip. Users have found that Icelandair is 55% 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.

  • 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. Paris 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 $29.

  • 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, Festhalle, and Historisches Museum Frankfurt. Those on a layover in Frankfurt am Main interested in visiting Römerberg, Festhalle, or Historisches Museum Frankfurt can do so by traveling 7.4 mi, 6.5 mi, and 7.3 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 $43 per day.

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

    The majority of Paris visitors spend their time at Eiffel Tower, Champs-Elysées, and Louvre Museum. Those on a layover in Paris interested in visiting Eiffel Tower, Champs-Elysées, or Louvre Museum can do so by traveling 15.8 mi, 14.7 mi, and 14.3 mi, respectively from Paris Charles de Gaulle. Travelers can book a car rental at Paris Charles de Gaulle for about $40 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. Reykjavik 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, October is the cheapest month in which you can book a flight from Seattle to Barcelona (average of $391). 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 diciembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$377Average$614FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$461Average$568FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$478Average$711FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$486Average$802FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$498Average$764FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$554Average$841FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$555Average$776FlexibilityNo cancel feeOn-time70%
IberiaCheapest$572Average$819FlexibilityNo cancel feeOn-time77%
KLMCheapest$574Average$889FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$590Average$868FlexibilityNo cancel feeOn-time71%

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