Barcelona-El Prat

$209+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Jul 26 — Aug 21
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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 January or February, booked 74 days in advance, depart on a Friday or Monday and return on a Monday

Cheap 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 June 26, 2026.

This Mytrip deal was found by Cheapflights users on 6/22. 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.
Tue 8/117:00 pm
SEA
-
BCN
2 stops19h 59m
Multiple Airlines
Thu 8/206:00 pm
BCN
-
SEA
3 stops35h 40m
Multiple Airlines
Deal found 6/22$712
This Mytrip deal was found by Cheapflights users on 6/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
-
BCN
2 stops18h 50m
Multiple Airlines
Tue 9/1511:25 am
BCN
-
SEA
2 stops31h 15m
Multiple Airlines
Deal found 6/24$713
This KAYAK deal was found by Cheapflights users on 6/24. 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.
Tue 10/136:05 pm
SEA
-
BCN
1 stop19h 05m
Condor
Sat 10/248:00 am
BCN
-
SEA
1 stop17h 00m
Condor
Deal found 6/24$715
This Expedia deal was found by Cheapflights users on 6/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:40 am
SEA
-
BCN
2 stops24h 40m
Iberia
Thu 10/1512:20 pm
BCN
-
SEA
1 stop20h 54m
Iberia
Deal found 6/24$716
This Kiwi.com deal was found by Cheapflights users on 6/25. 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.
Sun 8/303:55 pm
SEA
-
BCN
1 stop17h 15m
Scandinavian Airlines
Sat 9/57:00 pm
BCN
-
SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 6/25$717
This Mytrip deal was found by Cheapflights users on 6/26. 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.
Tue 9/86:05 pm
SEA
-
BCN
3 stops31h 45m
Multiple Airlines
Fri 9/186:20 am
BCN
-
SEA
2 stops18h 40m
Multiple Airlines
Deal found 6/26$718
This Condor deal was found by Cheapflights users on 6/23. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:05 pm
SEA
-
BCN
1 stop19h 05m
Multiple Airlines
Mon 10/198:00 am
BCN
-
SEA
2 stops21h 53m
Multiple Airlines
Deal found 6/23$720
This CheapOair deal was found by Cheapflights users on 6/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:05 pm
SEA
-
BCN
1 stop19h 05m
Multiple Airlines
Thu 10/158:00 am
BCN
-
SEA
2 stops20h 53m
Multiple Airlines
Deal found 6/23$721
This American Airlines deal was found by Cheapflights users on 6/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:30 pm
SEA
-
BCN
1 stop17h 30m
American Airlines
Wed 8/2610:45 am
BCN
-
SEA
1 stop17h 02m
American Airlines
Deal found 6/24$722
This Mytrip deal was found by Cheapflights users on 6/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:00 am
SEA
-
BCN
2 stops31h 50m
Multiple Airlines
Sun 9/2012:35 pm
BCN
-
SEA
3 stops32h 20m
Multiple Airlines
Deal found 6/24$723
This Rumbo deal was found by Cheapflights users on 6/24. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1310:19 am
SEA
-
BCN
1 stop15h 26m
Iberia
Wed 8/2610:30 am
BCN
-
SEA
1 stop19h 22m
Iberia
Deal found 6/24$724

Find 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 June 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$712
(Mytrip)

One-way from

$209
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,187

Good round-trip deal

$1,010 or less

Good one-way deal

$458 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. 20% potential increase in price ($204 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).
Average for round-trip flights in June 2026
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Barcelona-El Prat.
Price to beat on a one-way 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 June 26, 2026.
Use the filters below to find and compare flights from Seattle to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 10/12

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

Fri 10/16

3:45 pm-8:40 pm

1 stop13h 55m

$779

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 8/27

10:40 am-10:10 pm

2 stops26h 30m

Barcelona-El Prat

Fri 9/4

10:15 am-4:00 pm

1 stop14h 45m

$780

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 9/20

5:40 pm-10:10 pm

1 stop19h 30m

Barcelona-El Prat

Tue 9/29

8:00 am-7:39 pm

2 stops20h 39m

$800

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 9/14

10:53 am-6:10 pm

2 stops22h 17m

Barcelona-El Prat

Thu 9/24

12:50 pm-1:45 pm

2 stops33h 55m

$887

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 9/4

6:00 pm-4:05 pm

1 stop13h 05m

Barcelona-El Prat

Tue 10/27

10:15 am-4:55 pm

1 stop14h 40m

$915

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 10/11

3:59 pm-6:25 pm

2 stops17h 26m

Barcelona-El Prat

Thu 10/15

1:30 pm-12:15 am

1 stop19h 45m

$924

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 10/13

3:30 pm-11:10 am

Nonstop10h 40m

Barcelona-El Prat

Tue 10/20

7:45 pm-11:52 am

1 stop25h 07m

$935
Quickest round-trip

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 9/22

3:35 pm-11:10 am

Nonstop10h 35m

Barcelona-El Prat

Wed 10/14

1:20 pm-3:44 pm

Nonstop11h 24m

$940

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 7/8

5:40 pm-10:10 pm

1 stop19h 30m

Barcelona-El Prat

Tue 7/14

8:00 am-9:34 pm

2 stops22h 34m

$970

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 9/6

6:45 pm-5:10 pm

1 stop13h 25m

Barcelona-El Prat

Sun 9/13

1:20 pm-3:45 pm

Nonstop11h 25m

$1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Barcelona-El Prat Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

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 73 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, January is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of $480). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,187). 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 June 26, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Barcelona-El Prat Airport as you normally would.

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 June 26, 2026.
See what other customers who have flown with Delta,Turkish Airlines, andIcelandair 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.

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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. 13 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 1 outbound flight to Barcelona-El Prat per day.

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

    For as low as $915, Icelandair can have you in Barcelona-El Prat Airport from Seattle in 13h 05m. 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 ($367), Lufthansa ($470), and Scandinavian Airlines ($478) offers the cheapest pricing from Seattle to Barcelona-El Prat Airport. Icelandair is priced at 52% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airlines for a one-way flight from Seattle to Barcelona-El Prat Airport are Scandinavian Airlines ($294), WestJet ($324), and Air France ($352).

  • What are the most reliable airlines from Seattle to Barcelona-El Prat Airport?

    Before booking your flight to Barcelona-El Prat Airport from Seattle, check out the most reliable airlines to get you to your destination on time: KLM (88%), Air France (88%), Delta( 88%).

  • 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 $796, our data indicates the cheapest price to be $458. The most popular route (Seattle/Tacoma Intl - Barcelona-El Prat), is priced around $323.

  • 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 Frankfurt am Main?

    Frankfurt am Main travelers tend to visit Römerberg, Oper Frankfurt, and Festhalle more than anywhere else. Römerberg, Oper Frankfurt, and Festhalle are located about 7.4 mi, 7.0 mi, and 6.5 mi, respectively from Frankfurt am Main. Those on a layover in Frankfurt am Main in need of a rental car can book one at Frankfurt am Main for about $41.

  • What are some popular points of interest to see during a layover in London?

    Hyde Park, Buckingham Palace, and Trafalgar Square are the most popular attractions in London if you're in need of something to do during your layover. Hyde Park, Buckingham Palace, and Trafalgar Square can be visited by traveling about 12.5 mi, 13.7 mi, and 14.3 mi respectively from London Heathrow. Those looking to explore during their layover in London can rent a car from London Heathrow for about $37 per day.

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

    Reykjavik travelers tend to visit Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool more than any other attractions. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are located about 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers can rent a car at Reykjavik Keflavik Intl for an average daily rate of $68 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, January is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of $480). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,187). 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
Roses
Calella
L'Hospitalet de Llobregat
Cadaques
El Prat de Llobregat

Browse thousands of different options on Cheapflights for your next trip

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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 June 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$367Average$517FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$470Average$857FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$478Average$577FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$480Average$1,185FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$481Average$884FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$483Average$767FlexibilityNo cancel feeOn-time70%
DeltaCheapest$486Average$1,133FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$552Average$723FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$586Average$837FlexibilityNo cancel feeOn-time77%
CondorCheapest$588Average$748FlexibilityNo cancel feeOn-time76%

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