Barcelona-El Prat

$250+ Cheap flights from Seattle (SEA) to Barcelona-El Prat (BCN)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Dec 10 — Dec 171
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Find cheap flights from Seattle to Barcelona-El Prat with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Barcelona-El Prat are usually found in February or October, booked 4 days in advance, depart on a Friday or Tuesday and return on a Tuesday

Find flight deals from Seattle to Barcelona-El Prat

Cheapest flights from Seattle to Barcelona-El Prat
Explore the most affordable flight options available from Seattle to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 10, 2025.

This FlightHub deal was found by Cheapflights users on 11/9. 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 11/308:05 pmSEA - BCN
1 stop15h 20mAer Lingus
Sun 12/1411:30 amBCN - SEA
1 stop15h 50mAer Lingus
Deal found 11/9$559
This American Airlines deal was found by Cheapflights users on 11/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:50 pmSEA - BCN
1 stop16h 25mMultiple Airlines
Sat 12/1312:30 pmBCN - SEA
1 stop18h 42mMultiple Airlines
Deal found 11/8$575
This United Airlines deal was found by Cheapflights users on 11/8. 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.
Thu 12/118:10 amSEA - BCN
1 stop15h 10mUnited Airlines
Thu 12/186:50 amBCN - SEA
1 stop14h 20mUnited Airlines
Deal found 11/8$576
This United Airlines deal was found by Cheapflights users on 11/7. 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.
Mon 12/88:10 amSEA - BCN
1 stop15h 10mUnited Airlines
Mon 12/2211:00 amBCN - SEA
1 stop19h 35mUnited Airlines
Deal found 11/7$579
This Delta deal was found by Cheapflights users on 11/8. 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.
Thu 12/117:20 amSEA - BCN
1 stop15h 40mDelta
Wed 12/176:00 amBCN - SEA
1 stop14h 50mDelta
Deal found 11/8$580
This Air Canada deal was found by Cheapflights users on 11/8. 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.
Fri 12/128:10 amSEA - BCN
2 stops24h 25mAir Canada
Wed 12/241:35 pmBCN - SEA
2 stops33h 56mAir Canada
Deal found 11/8$581
This United Airlines deal was found by Cheapflights users on 11/8. 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.
Thu 12/118:10 amSEA - BCN
1 stop15h 10mUnited Airlines
Sun 12/146:50 amBCN - SEA
2 stops24h 26mUnited Airlines
Deal found 11/8$582
This Delta deal was found by Cheapflights users on 11/8. 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.
Thu 12/117:20 amSEA - BCN
1 stop15h 40mDelta
Mon 12/1510:55 amBCN - SEA
1 stop18h 55mDelta
Deal found 11/8$584
This United Airlines deal was found by Cheapflights users on 11/8. 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.
Thu 12/118:10 amSEA - BCN
1 stop15h 10mUnited Airlines
Tue 12/166:50 amBCN - SEA
3 stops23h 10mUnited Airlines
Deal found 11/8$586
This United Airlines deal was found by Cheapflights users on 11/8. 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.
Thu 12/115:00 amSEA - BCN
2 stops18h 20mUnited Airlines
Mon 12/151:35 pmBCN - SEA
2 stops27h 49mUnited Airlines
Deal found 11/8$588
This American Airlines deal was found by Cheapflights users on 11/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:34 amSEA - BCN
1 stop14h 26mMultiple Airlines
Sun 1/1111:00 amBCN - SEA
1 stop20h 29mMultiple Airlines
Deal found 11/8$589

Cheap flight deals from Seattle to Barcelona-El Prat

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Barcelona-El Prat (BCN). 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 November 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$495
(United Airlines)

One-way from

$250
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$748

Good round-trip deal

$1,625 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Barcelona-El Prat flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Barcelona-El Prat flights.
From Seattle/Tacoma Intl to Barcelona-El Prat
One-way flight from Seattle/Tacoma Intl to Barcelona-El Prat
Highest demand for flights based on searches. 24% potential increase in price ($278 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Average for round-trip flights in November 2025
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Barcelona-El Prat.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Barcelona-El Prat 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 November 10, 2025.
Use the filters below to find and compare flights from Seattle to Barcelona-El Prat Airport that are best for you.

Fly from

Seattle

Fly to

Barcelona-El Prat

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 12/11

8:10 am-8:20 am

1 stop15h 10m

Barcelona-El Prat

Thu 12/18

6:50 am-12:10 pm

1 stop14h 20m

$576

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 3/24

1:40 pm-6:05 pm

2 stops20h 25m

Barcelona-El Prat

Tue 4/7

7:00 pm-11:40 pm

2 stops37h 40m

$579

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 3/18

3:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

Mon 4/6

3:45 pm-5:50 pm

1 stop35h 05m

$580

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 12/11

7:00 am-8:20 am

2 stops16h 20m

Barcelona-El Prat

Tue 12/16

10:30 am-8:54 pm

1 stop19h 24m

$588

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 12/5

7:10 am-6:20 pm

2 stops26h 10m

Barcelona-El Prat

Sun 12/14

7:10 pm-9:59 pm

2 stops35h 49m

$607

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 3/20

10:55 am-6:20 pm

2 stops23h 25m

Barcelona-El Prat

Tue 4/7

7:00 pm-11:40 pm

2 stops37h 40m

$619

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 3/20

10:55 am-6:20 pm

2 stops23h 25m

Barcelona-El Prat

Wed 4/8

7:00 pm-12:16 am

2 stops38h 16m

$659

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/2

1:35 pm-11:35 am

1 stop13h 00m

Barcelona-El Prat

Sun 1/11

9:20 pm-4:55 pm

1 stop28h 35m

$682

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 12/7

9:25 am-9:35 am

3 stops39h 10m

Barcelona-El Prat

Tue 12/23

11:55 am-1:20 pm

1 stop34h 25m

$687

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 12/1

7:13 pm-8:20 am

2 stops28h 07m

Barcelona-El Prat

Mon 12/8

6:50 am-9:00 pm

3 stops23h 10m

$690

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 20 results
1
2

Compare providers for flights from Seattle to Barcelona-El Prat

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Barcelona-El Prat in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Barcelona-El Prat Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Barcelona-El Prat Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Barcelona-El Prat Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Barcelona-El Prat Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Barcelona-El Prat Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Barcelona-El Prat

Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat 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-El Prat Airport

How far ahead should I book a flight from Seattle to Barcelona-El Prat Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Barcelona-El Prat. Price data was last updated on November 7, 2025.

The price you pay for your flight from Seattle to Barcelona-El Prat Airport may vary depending on when you book. For the best chance of a lower fare, look to book 4 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 Seattle to Barcelona-El Prat Airport?

Currently, October is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of $391). Flying from Seattle to Barcelona-El Prat Airport 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-El Prat. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 10, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Barcelona-El Prat Airport 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-El Prat Airport?

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

Travelers seeking maximum savings on their Seattle to Barcelona-El Prat Airport 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-El Prat Airport?

Reviews of airlines servicing Barcelona-El Prat

Get insights into the airlines that provide service to Barcelona-El Prat. 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-El Prat. Reviews last updated November 10, 2025.
See what other customers who have flown with Delta, United Airlines, and Icelandair from Seattle to Barcelona-El Prat Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

7.9

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.

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

7.9

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.

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

7.9

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.

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

7.9

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.

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

7.9

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.

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

7.9

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-El Prat. 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-El Prat?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Barcelona-El Prat. 16 airlines have flights from Seattle/Tacoma Intl to Barcelona-El Prat on a regular basis. Booking flights from Seattle/Tacoma Intl to Barcelona-El Prat should not be difficult; the airport handles an average of 0 outbound flights to Barcelona-El Prat per day.

  • How long is the flight from Seattle to Barcelona-El Prat Airport?

    For as low as $580, United Airlines can have you in Barcelona-El Prat Airport from Seattle in 13h 40m. The distance between Seattle and Barcelona-El Prat Airport is about 5421 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Icelandair ($389), Scandinavian Airlines ($465), and Air Canada ($478) offers the cheapest pricing from Seattle to Barcelona-El Prat Airport. Icelandair is priced at 54% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Seattle to Barcelona-El Prat Airport?

    Looking for the cheapest flight from Seattle to Barcelona-El Prat Airport? While on average our users pay $1,648, our data indicates the cheapest price to be $1,318. The most popular route (Seattle/Tacoma Intl - Barcelona-El Prat), is priced around $385.

  • Where are the most common layover locations when flying from Seattle to Barcelona-El Prat Airport?

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

    London travelers tend to visit Hyde Park, Buckingham Palace, and Piccadilly Circus more than anywhere else. Hyde Park, Buckingham Palace, and Piccadilly Circus are located about 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. 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?

    Römerberg, Festhalle, and Historisches Museum Frankfurt are the most popular attractions in Frankfurt am Main if you're in need of something to do during your layover. Römerberg, Festhalle, and Historisches Museum Frankfurt can be visited by traveling about 7.4 mi, 6.5 mi, and 7.3 mi respectively from Frankfurt am Main. Those looking to explore during their layover in Frankfurt am Main can rent a car from Frankfurt am Main for about $43 per day.

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

    Paris travelers tend to visit Eiffel Tower, Champs-Elysées, and Louvre Museum more than any other attractions. Eiffel Tower, Champs-Elysées, and Louvre Museum are located about 15.8 mi, 14.7 mi, and 14.3 mi, respectively from Paris Charles de Gaulle. Travelers can rent a car at Paris Charles de Gaulle for an average daily rate of $38 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Seattle to Barcelona-El Prat Airport flights?

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Barcelona-El Prat 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-El Prat Airport?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of $391). Flying from Seattle to Barcelona-El Prat Airport 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

Traveling to a place near Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
Calella
Roses
L'Hospitalet de Llobregat
Cadaques
El Prat de Llobregat
Badalona
Pineda de Mar

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Alternative routes for Seattle to Barcelona-El Prat

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Seattle to Barcelona-El Prat

Discover the top 10 airlines that operate flights from Seattle to Barcelona-El Prat. 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 November 10, 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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