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Cheap flights from Seattle to Barcelona from C$ 542

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Barcelona

Enter your travel dates to find the best prices.

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 13 February 2026.

Wed 22/43:40 p.m.
SEA
-
BCN
1 stop14h 05m
Icelandair
Wed 29/43:45 p.m.
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 10/2C$ 564
Wed 4/32:35 p.m.
SEA
-
BCN
1 stop14h 00m
Icelandair
Sun 8/311:50 a.m.
BCN
-
SEA
1 stop14h 10m
Icelandair
Deal found 9/2C$ 616
Tue 7/411:59 p.m.
SEA
-
BCN
2 stops23h 01m
United Airlines
Tue 14/412:15 p.m.
BCN
-
SEA
2 stops37h 26m
United Airlines
Deal found 11/2C$ 639
Sun 19/410:35 p.m.
SEA
-
BCN
1 stop29h 40m
United Airlines
Thu 30/41:15 p.m.
BCN
-
SEA
1 stop30h 05m
United Airlines
Deal found 12/2C$ 641
Tue 21/46:40 p.m.
SEA
-
BCN
1 stop13h 30m
Delta
Thu 30/41:25 p.m.
BCN
-
SEA
1 stop31h 17m
Delta
Deal found 12/2C$ 655
Wed 15/48:00 a.m.
SEA
-
BCN
1 stop15h 20m
United Airlines
Wed 22/41:15 p.m.
BCN
-
SEA
1 stop17h 38m
United Airlines
Deal found 11/2C$ 659
Sun 19/47:20 a.m.
SEA
-
BCN
1 stop16h 25m
Delta
Wed 29/411:00 a.m.
BCN
-
SEA
1 stop20h 05m
Delta
Deal found 10/2C$ 662
Sun 19/411:05 p.m.
SEA
-
BCN
2 stops23h 55m
United Airlines
Wed 29/41:15 p.m.
BCN
-
SEA
1 stop17h 38m
United Airlines
Deal found 12/2C$ 663
Thu 23/43:40 p.m.
SEA
-
BCN
1 stop14h 05m
Icelandair
Mon 27/43:45 p.m.
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 10/2C$ 666
Tue 21/46:40 p.m.
SEA
-
BCN
1 stop13h 30m
Delta
Wed 29/43:15 p.m.
BCN
-
SEA
2 stops27h 43m
Delta
Deal found 12/2C$ 667
Tue 21/46:40 p.m.
SEA
-
BCN
1 stop13h 30m
Delta
Tue 28/46:20 a.m.
BCN
-
SEA
2 stops26h 39m
Delta
Deal found 12/2C$ 669
Wed 22/45:35 a.m.
SEA
-
BCN
2 stops24h 15m
Delta
Wed 29/43:15 p.m.
BCN
-
SEA
2 stops27h 43m
Delta
Deal found 12/2C$ 674

Find flight deals from Seattle to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Barcelona (S37). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 February 2026.

Round-trip from

C$ 564

One-way from

C$ 542

Popular in

June

Cheapest in

February

Average price

C$ 660
Icelandair
  • Icelandair
  • 22/4-29/4
  • 2 total stops
  • 28h 00m total
  • Seattle to Barcelona
Search Deals
United Airlines
  • United Airlines
  • 27/4
  • 1 total stop
  • 21h 15m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (C$ 487 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 76 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 629,999 searches. Data last updated 13 February 2026.
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

Wed 4/3

2:35 p.m.-1:35 p.m.

1 stop14h 00m

Barcelona-El Prat

Sun 8/3

11:50 a.m.-6:00 p.m.

1 stop14h 10m

C$ 616

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 20/4

6:40 p.m.-5:10 p.m.

1 stop13h 30m

Barcelona-El Prat

Thu 30/4

1:25 p.m.-11:42 a.m.

1 stop31h 17m

C$ 655

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 11/4

11:59 p.m.-8:20 a.m.

2 stops23h 21m

Barcelona-El Prat

Sun 19/4

12:15 p.m.-7:00 p.m.

2 stops39h 45m

C$ 708

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 12/4

11:59 p.m.-8:20 a.m.

2 stops23h 21m

Barcelona-El Prat

Sun 19/4

12:15 p.m.-7:00 p.m.

2 stops39h 45m

C$ 708

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 8/4

7:00 a.m.-9:20 a.m.

2 stops17h 20m

Barcelona-El Prat

Sat 18/4

12:15 p.m.-7:00 p.m.

2 stops39h 45m

C$ 713

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 24/4

8:20 p.m.-7:00 p.m.

1 stop13h 40m

Barcelona-El Prat

Thu 30/4

10:15 a.m.-6:25 p.m.

1 stop17h 10m

C$ 730

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 10/4

10:35 p.m.-9:20 a.m.

2 stops25h 45m

Barcelona-El Prat

Sun 19/4

12:15 p.m.-7:00 p.m.

2 stops39h 45m

C$ 781

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 16/3

7:15 a.m.-10:25 a.m.

2 stops19h 10m

Barcelona-El Prat

Thu 26/3

6:00 a.m.-10:10 p.m.

2 stops24h 10m

C$ 829

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 5/5

7:15 a.m.-6:10 p.m.

2 stops25h 55m

Barcelona-El Prat

Sat 9/5

7:00 p.m.-10:37 p.m.

2 stops36h 37m

C$ 837

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 27/4

11:59 p.m.-8:20 a.m.

2 stops23h 21m

C$ 542

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/2

Showing 1-10 of 19 results
1
2

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 6 February 2026.

The price you pay for your flight from Seattle to Barcelona may vary depending on when you book. For the best chance of a lower fare, look to book 47 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?

Currently, January is the cheapest month in which you can book a flight from Seattle to Barcelona (average of C$ 480). Flying from Seattle to Barcelona in June is currently the most expensive (average of C$ 1,092). 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.

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 13 February 2026.
Check out reviews from past customers who have flown with Lufthansa from Seattle to Barcelona to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,782 reviews
Check prices

Food

6.3

Entertainment

6.5

Crew

7.6

Boarding

7.0

Comfort

6.8

Overall

6.8

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

SFO - MUC

The coordination between United and Lufthansa teams is poor and confusing.
Lufthansa
6.8
Okay
7,782 reviews
Lufthansa
6.8
Okay
7,782 reviews
Check prices

Food

6.3

Entertainment

6.5

Crew

7.6

Boarding

7.0

Comfort

6.8

Overall

6.8

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

SFO - MUC

The coordination between United and Lufthansa teams is poor and confusing.

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?

    Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Barcelona. 1 airline have flights from Seattle/Tacoma Intl to Barcelona on a regular basis. Booking flights from Seattle/Tacoma Intl to Barcelona should not be difficult; the airport handles an average of 0 outbound flights to Barcelona per day.

  • How long is the flight from Seattle to Barcelona?

    Departing from Seattle to Barcelona will take you 13h 30m. The distance between Seattle and Barcelona is about 8724 km. This flight may include one or multiple stops.

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

    Our cheapest airline available from Seattle to Barcelona is Lufthansa. Our recent data shows that you can find tickets from as low as C$ 646 on this airline. Users have found that Lufthansa is 38% cheaper than the other options available to this destination.

  • 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, January is the cheapest month in which you can book a flight from Seattle to Barcelona (average of C$ 480). Flying from Seattle to Barcelona in June is currently the most expensive (average of C$ 1,092). 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

Browse thousands of different options on Cheapflights for your next trip

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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

Top airline flying from Seattle to Barcelona

Discover the top airline 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 629,999 searches. Data last updated 13 February 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 646AverageC$ 756FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Barcelona?

Cheapflights makes it easy to find Seattle to Barcelona flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Barcelona?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to Barcelona for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Seattle to Barcelona with no change fees?

Certainly. Search results for flights to Barcelona from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to Barcelona become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Barcelona from Seattle today and book when prices fit your budget.

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