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$255+ 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
dic. 6 — dic. 131
sáb. 12/6
sáb. 12/13
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Barcelona are usually found in November 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

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 noviembre 6, 2025.

Round-trip from

$487
(Icelandair)

One-way from

$255
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$669
From Seattle/Tacoma Intl to Barcelona
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One-way flight from Seattle/Tacoma Intl to Barcelona
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Highest demand for flights based on searches. 24% potential increase in price ($280 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 noviembre 6, 2025.

This FlightHub deal was found by Cheapflights users on 11/4. 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 FlightHub 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 11/4$488
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/610:40 amSEA - BCN
2 stops39h 05mUnited Airlines
lun. 12/229:55 amBCN - SEA
1 stop35h 15mUnited Airlines
Deal found 11/3$495
This United Airlines deal was found by Cheapflights users on 11/6. 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.
dom. 12/78:10 amSEA - BCN
1 stop15h 10mUnited Airlines
sáb. 12/131:55 pmBCN - SEA
2 stops41h 21mUnited Airlines
Deal found 11/6$501
This Orbitz deal was found by Cheapflights users on 11/6. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/612:31 amSEA - BCN
2 stops23h 29mIberia
sáb. 12/133:05 pmBCN - SEA
2 stops41h 20mIberia
Deal found 11/6$525
This Mytrip deal was found by Cheapflights users on 11/6. 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. 12/33:10 pmSEA - BCN
2 stops24h 15mMultiple Airlines
mar. 12/99:15 pmBCN - SEA
3 stops31h 01mMultiple Airlines
Deal found 11/6$545
This Mytrip deal was found by Cheapflights users on 11/5. 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. 12/35:50 amSEA - BCN
3 stops27h 20mMultiple Airlines
mié. 12/101:10 pmBCN - SEA
2 stops32h 00mMultiple Airlines
Deal found 11/5$559
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/158:05 pmSEA - BCN
1 stop15h 20mAer Lingus
lun. 12/2211:30 amBCN - SEA
1 stop15h 50mAer Lingus
Deal found 11/4$566
This Mytrip deal was found by Cheapflights users on 11/5. 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.
jue. 12/42:35 pmSEA - BCN
3 stops24h 00mMultiple Airlines
jue. 12/116:15 amBCN - SEA
2 stops19h 45mMultiple Airlines
Deal found 11/5$571
This CheapOair deal was found by Cheapflights users on 11/6. 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.
dom. 11/308:05 pmSEA - BCN
1 stop15h 20mAer Lingus
dom. 12/1411:30 amBCN - SEA
1 stop15h 50mAer Lingus
Deal found 11/6$575
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/128:10 amSEA - BCN
1 stop15h 10mUnited Airlines
jue. 12/186:50 amBCN - SEA
1 stop14h 20mUnited Airlines
Deal found 11/4$576
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/1211:00 pmSEA - BCN
1 stop24h 40mDelta
mié. 12/241:00 pmBCN - SEA
1 stop31h 50mDelta
Deal found 11/4$580
This Air Canada deal was found by Cheapflights users on 11/5. 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. 12/128:10 amSEA - BCN
2 stops24h 25mAir Canada
mié. 12/241:35 pmBCN - SEA
2 stops33h 56mAir Canada
Deal found 11/5$582

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 noviembre 6, 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. 1/17

10:58 am-2:15 pm

2 stops18h 17m

Barcelona-El Prat

sáb. 1/24

1:00 pm-11:30 am

2 stops31h 30m

$494

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 1/11

6:50 pm-5:00 pm

1 stop13h 10m

Barcelona-El Prat

mié. 1/28

12:20 pm-4:55 pm

1 stop13h 35m

$583

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

sáb. 1/17

6:50 pm-8:15 pm

1 stop16h 25m

Barcelona-El Prat

sáb. 1/24

6:40 am-11:30 am

1 stop13h 50m

$583

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 1/11

6:50 pm-7:05 pm

1 stop15h 15m

Barcelona-El Prat

jue. 1/22

12:15 pm-4:55 pm

1 stop13h 40m

$583

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

mar. 1/13

1:25 pm-1:40 pm

1 stop15h 15m

Barcelona-El Prat

lun. 1/26

10:10 am-4:55 pm

1 stop15h 45m

$583

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 12/7

3:10 pm-2:45 pm

1 stop14h 35m

Barcelona-El Prat

sáb. 12/13

6:20 pm-1:20 pm

1 stop28h 00m

$589

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

vie. 12/12

5:00 am-9:00 am

2 stops19h 00m

Barcelona-El Prat

mar. 12/23

11:55 am-1:20 pm

1 stop34h 25m

$597

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 2/1

2:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

vie. 2/6

11:50 am-8:39 pm

2 stops17h 49m

$682

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

sáb. 1/17

6:50 pm-5:55 pm

1 stop14h 05m

Barcelona-El Prat

dom. 1/25

10:10 am-4:55 pm

1 stop15h 45m

$683

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

vie. 1/2

7:10 am-6:20 pm

2 stops26h 10m

Barcelona-El Prat

dom. 1/11

7:10 pm-10:25 pm

2 stops36h 15m

$742

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 19 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 October 31, 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 $882). 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 noviembre 6, 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.

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 noviembre 6, 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
8,001 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

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
8,001 reviews
Delta
7.9
Good
8,001 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

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
9,005 reviews
Delta
7.9
Good
8,001 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

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
7.1
Good
572 reviews
Delta
7.9
Good
8,001 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

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
7,558 reviews
Delta
7.9
Good
8,001 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

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
7,500 reviews
Delta
7.9
Good
8,001 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

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 13h 10m. 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 $389 on this airline. Additional options worth looking into are Scandinavian Airlines and Air Canada, starting at $465 and $478 round-trip. Users have found that Icelandair is 54% cheaper than the other options available to this destination.

  • What are the cheapest flights from Seattle to Barcelona?

    On average you can expect to pay $1,648 for a flight from Seattle to Barcelona. The cheapest flight overall is $1,318 while the most popular route, (Seattle/Tacoma Intl - Barcelona-El Prat) is currently priced at $385.

  • 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 $38 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 $882). 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 noviembre 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$389Average$618FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$465Average$568FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$478Average$711FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$492Average$802FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$498Average$761FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$507Average$811FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$549Average$769FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$562Average$829FlexibilityNo cancel feeOn-time76%
KLMCheapest$574Average$887FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$590Average$866FlexibilityNo cancel feeOn-time71%

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