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Barcelona-El Prat

$237+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Aug 18 — Aug 251
Mon 8/18
Mon 8/25
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Barcelona-El Prat are usually found in November or February, booked 4 days in advance, depart on a Monday or Friday and return on a Tuesday

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 August 13, 2025.

Round-trip from

$608
(FlightHub)

One-way from

$237
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$712

Good round-trip deal

$1,924 or less
From Seattle/Tacoma Intl to Barcelona-El Prat
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One-way flight from Seattle/Tacoma Intl to Barcelona-El Prat
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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 ($37 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Barcelona-El Prat.
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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 August 13, 2025.

This FlightHub deal was found by Cheapflights users on 8/11. 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.
Wed 9/104:00 pmSEA - BCN
1 stop17h 10mScandinavian Airlines
Thu 9/257:00 pmBCN - SEA
1 stop28h 00mScandinavian Airlines
Deal found 8/11$608
This Scandinavian Airlines deal was found by Cheapflights users on 8/12. 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.
Fri 9/124:20 pmSEA - BCN
1 stop31h 30mScandinavian Airlines
Thu 10/27:00 pmBCN - SEA
1 stop28h 00mScandinavian Airlines
Deal found 8/12$610
This Scandinavian Airlines deal was found by Cheapflights users on 8/11. 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.
Fri 10/34:20 pmSEA - BCN
1 stop31h 30mScandinavian Airlines
Thu 10/1610:25 amBCN - SEA
1 stop36h 35mScandinavian Airlines
Deal found 8/11$611
This Justfly.com deal was found by Cheapflights users on 8/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/74:00 pmSEA - BCN
1 stop17h 10mScandinavian Airlines
Mon 9/227:00 pmBCN - SEA
2 stops36h 01mScandinavian Airlines
Deal found 8/11$612
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 10/710:58 amSEA - BCN
1 stop17h 22mMultiple Airlines
Wed 10/156:30 pmBCN - SEA
1 stop24h 59mMultiple Airlines
Deal found 8/11$616
This oojo deal was found by Cheapflights users on 8/11. 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.
Sat 10/187:00 pmSEA - BCN
1 stop34h 45mIcelandair
Sat 10/253:45 pmBCN - SEA
1 stop13h 55mIcelandair
Deal found 8/11$618
This FlightHub deal was found by Cheapflights users on 8/11. 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 10/57:35 pmSEA - BCN
1 stop17h 50mAer Lingus
Wed 10/1511:00 amBCN - SEA
1 stop15h 50mAer Lingus
Deal found 8/11$619
This FlightHub deal was found by Cheapflights users on 8/10. 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.
Thu 9/257:10 pmSEA - BCN
1 stop30h 25mTurkish Airlines
Thu 10/22:40 pmBCN - SEA
1 stop35h 35mTurkish Airlines
Deal found 8/10$623
This Scandinavian Airlines deal was found by Cheapflights users on 8/11. 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.
Thu 10/92:10 pmSEA - BCN
2 stops33h 40mScandinavian Airlines
Thu 10/1610:25 amBCN - SEA
1 stop36h 35mScandinavian Airlines
Deal found 8/11$625
This Justfly.com deal was found by Cheapflights users on 8/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/84:00 pmSEA - BCN
1 stop17h 10mScandinavian Airlines
Thu 9/2510:25 amBCN - SEA
2 stops21h 00mScandinavian Airlines
Deal found 8/11$627
This Mytrip deal was found by Cheapflights users on 8/11. 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.
Wed 10/13:45 pmSEA - BCN
2 stops24h 45mMultiple Airlines
Wed 10/87:20 amBCN - SEA
2 stops19h 30mMultiple Airlines
Deal found 8/11$628
This Mytrip deal was found by Cheapflights users on 8/11. 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.
Wed 9/103:45 pmSEA - BCN
2 stops19h 20mMultiple Airlines
Mon 9/226:45 amBCN - SEA
2 stops20h 05mMultiple Airlines
Deal found 8/11$630

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 August 13, 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

Fri 9/12

4:20 pm-8:50 am

1 stop31h 30m

Barcelona-El Prat

Thu 10/2

7:00 pm-2:00 pm

1 stop28h 00m

$610

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 10/3

4:20 pm-8:50 am

1 stop31h 30m

Barcelona-El Prat

Thu 10/16

10:25 am-2:00 pm

1 stop36h 35m

$611

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 10/18

7:00 pm-2:45 pm

1 stop34h 45m

Barcelona-El Prat

Sat 10/25

3:45 pm-8:40 pm

1 stop13h 55m

$618

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 10/7

12:45 pm-9:35 am

2 stops35h 50m

Barcelona-El Prat

Tue 10/14

7:00 pm-8:50 pm

2 stops34h 50m

$625

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 10/7

1:40 pm-9:35 am

2 stops34h 55m

Barcelona-El Prat

Mon 10/13

7:00 pm-10:25 pm

2 stops36h 25m

$625

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 10/4

11:15 am-6:10 pm

2 stops21h 55m

Barcelona-El Prat

Tue 10/14

7:00 pm-8:50 pm

2 stops34h 50m

$625

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 10/9

2:10 pm-8:50 am

2 stops33h 40m

Barcelona-El Prat

Thu 10/16

10:25 am-2:00 pm

1 stop36h 35m

$625

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 10/4

11:15 am-6:10 pm

2 stops21h 55m

Barcelona-El Prat

Mon 10/13

7:00 pm-10:25 pm

2 stops36h 25m

$625

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 10/1

3:45 pm-1:30 am

2 stops24h 45m

Barcelona-El Prat

Wed 10/8

7:20 am-5:50 pm

2 stops19h 30m

$628

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 10/10

4:20 pm-6:10 pm

1 stop16h 50m

Barcelona-El Prat

Sun 10/19

9:40 am-8:50 pm

2 stops20h 10m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 20 results
1
2

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 August 8, 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, January is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of $523). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,057). 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 August 13, 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 54% 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. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What’s the top layover airport for flights from Seattle to Barcelona-El Prat Airport?

Share of 1-stop round-trip flights from Seattle to Barcelona-El Prat Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Istanbul (IST) – chosen by Cheapflights users on 75% of 1-stop itineraries from Seattle to Barcelona-El Prat Airport on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Barcelona-El Prat Airport?

Average round-trip fare for 1-stop flights from Seattle to Barcelona-El Prat Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $688.

What’s the fastest layover option from Seattle to Barcelona-El Prat Airport?

Shortest average travel time for 1-stop one-way flights from Seattle to Barcelona-El Prat Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 14h 50m.

Which airport typically offers the quickest layover for flights from Seattle to Barcelona-El Prat Airport?

Average layover duration for 1-stop one-way flights from Seattle to Barcelona-El Prat Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 58m.

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 August 13, 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.
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,920 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Icelandair
7.0
Good
526 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,317 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,265 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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. 15 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.

  • What is the cheapest airline to fly from Seattle to Barcelona-El Prat Airport round-trip?

    According to our current data, Scandinavian Airlines ($608), offers the cheapest pricing from Seattle to Barcelona-El Prat Airport. Scandinavian Airlines is priced at 28% 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 $1,924, our data indicates the cheapest price to be $1,258. The most popular route (Seattle/Tacoma Intl - Barcelona-El Prat), is priced around $425.

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

    Seattle to Barcelona-El Prat Airport flights have a layover in London most of the time. Paris sees the second most layovers for non-direct flights flying from Seattle to Barcelona-El Prat Airport. Frankfurt am Main comes in third as the most popular layover location on Seattle to Barcelona-El Prat Airport flights.

  • 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 $48.

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

    Eiffel Tower, Champs-Elysées, and Louvre Museum are the most popular attractions in Paris if you're in need of something to do during your layover. Eiffel Tower, Champs-Elysées, and Louvre Museum can be visited by traveling about 15.8 mi, 14.7 mi, and 14.3 mi respectively from Paris Charles de Gaulle. Those looking to explore during their layover in Paris can rent a car from Paris Charles de Gaulle for about $44 per day.

  • What are points of interest worth seeing during a layover in Frankfurt am Main?

    Frankfurt am Main travelers tend to visit Römerberg, Hauptwache, and Historisches Museum Frankfurt more than any other attractions. Römerberg, Hauptwache, and Historisches Museum Frankfurt are located about 7.4 mi, 7.4 mi, and 7.3 mi, respectively from Frankfurt am Main. Travelers can rent a car at Frankfurt am Main for an average daily rate of $46 to make sightseeing during their layover a little easier.

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

    The least popular layover on flights from Seattle to Barcelona-El Prat Airport is Amsterdam. Calgary is the second least popular location for layovers on flights from Seattle to Barcelona-El Prat Airport. Reykjavik comes next as the third least popular layover location 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 $523). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,057). 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
Castelldefels
Cadaques
L'Hospitalet de Llobregat
El Prat de Llobregat
Badalona
Pineda de Mar
Santa Susanna

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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.
Portland to Barcelona-El Prat flights
Spokane to Barcelona-El Prat flights

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 August 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$414Average$617FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$465Average$573FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$484Average$711FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$489Average$743FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$507Average$810FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$558Average$788FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$561Average$832FlexibilityNo cancel feeOn-time69%
KLMCheapest$568Average$880FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$581Average$877FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$590Average$842FlexibilityNo cancel feeOn-time71%

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