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Cheap flights from Seattle to Barcelona from C$ 499

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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
17 Jun — 24 Jun1
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 18 May 2026.

Mon 28/911:38 a.m.
SEA
-
BCN
2 stops25h 32m
Multiple Airlines
Mon 12/1010:15 a.m.
BCN
-
SEA
1 stop14h 55m
Multiple Airlines
Deal found 13/5C$ 1,031
Mon 28/96:10 p.m.
SEA
-
BCN
1 stop19h 00m
Condor
Thu 8/1010:15 a.m.
BCN
-
SEA
1 stop14h 45m
Condor
Deal found 14/5C$ 1,057
Tue 25/810:35 a.m.
SEA
-
BCN
2 stops22h 35m
Scandinavian Airlines
Wed 2/97:00 p.m.
BCN
-
SEA
2 stops36h 25m
Scandinavian Airlines
Deal found 13/5C$ 1,063
Wed 12/811:42 a.m.
SEA
-
BCN
2 stops25h 28m
Multiple Airlines
Wed 26/810:25 a.m.
BCN
-
SEA
1 stop14h 15m
Multiple Airlines
Deal found 15/5C$ 1,072
Sun 13/95:40 p.m.
SEA
-
BCN
1 stop13h 20m
Condor
Sun 20/95:00 p.m.
BCN
-
SEA
1 stop32h 10m
Condor
Deal found 17/5C$ 1,085
Wed 27/55:40 p.m.
SEA
-
BCN
1 stop19h 30m
Multiple Airlines
Sat 30/510:25 a.m.
BCN
-
SEA
2 stops22h 34m
Multiple Airlines
Deal found 13/5C$ 1,086
Sun 7/65:40 p.m.
SEA
-
BCN
1 stop13h 20m
Condor
Mon 22/65:00 p.m.
BCN
-
SEA
1 stop31h 40m
Condor
Deal found 13/5C$ 1,090
Tue 8/912:45 p.m.
SEA
-
BCN
2 stops24h 25m
Multiple Airlines
Fri 9/1010:15 a.m.
BCN
-
SEA
1 stop14h 45m
Multiple Airlines
Deal found 13/5C$ 1,100
Tue 15/911:38 a.m.
SEA
-
BCN
2 stops19h 22m
Multiple Airlines
Thu 15/108:00 a.m.
BCN
-
SEA
1 stop17h 00m
Multiple Airlines
Deal found 13/5C$ 1,114
Tue 1/912:02 p.m.
SEA
-
BCN
2 stops25h 08m
Multiple Airlines
Tue 15/910:25 a.m.
BCN
-
SEA
1 stop14h 15m
Multiple Airlines
Deal found 13/5C$ 1,127
Sun 17/55:40 p.m.
SEA
-
BCN
1 stop13h 20m
Multiple Airlines
Tue 2/68:00 a.m.
BCN
-
SEA
2 stops23h 27m
Multiple Airlines
Deal found 14/5C$ 1,129
Mon 31/811:59 a.m.
SEA
-
BCN
2 stops19h 01m
Multiple Airlines
Tue 27/107:00 a.m.
BCN
-
SEA
1 stop17h 35m
Multiple Airlines
Deal found 18/5C$ 1,141

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 18 May 2026.

Round-trip from

C$ 1,031

One-way from

C$ 499

Popular in

June

Cheapest in

January

Average price

C$ 1,125
Condor
  • Condor
  • 28/9-12/10
  • 3 total stops
  • 40h 27m total
  • Seattle to Barcelona
Search Deals
6/7
  • 6/7
  • 3 total stops
  • 34h 55m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (C$ 422 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 72 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 18 May 2026.
Use the filters below to find and compare flights from Seattle to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 11/6

6:05 p.m.-10:10 p.m.

1 stop19h 05m

Barcelona-El Prat

Mon 22/6

5:00 p.m.-3:40 p.m.

1 stop31h 40m

C$ 1,090

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 5/8

8:53 a.m.-4:05 p.m.

2 stops22h 12m

Barcelona-El Prat

Tue 22/9

8:00 a.m.-8:32 p.m.

2 stops21h 32m

C$ 1,164

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 18/8

3:55 p.m.-12:00 p.m.

2 stops35h 05m

Barcelona-El Prat

Mon 7/9

7:00 p.m.-7:05 p.m.

2 stops33h 05m

C$ 1,182

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 12/8

5:40 p.m.-4:05 p.m.

1 stop13h 25m

Barcelona-El Prat

Sun 23/8

8:00 a.m.-3:40 p.m.

1 stop16h 40m

C$ 1,244

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 19/9

12:02 p.m.-4:05 p.m.

2 stops19h 03m

Barcelona-El Prat

Sat 3/10

10:25 a.m.-4:00 p.m.

1 stop14h 35m

C$ 1,261

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 15/7

1:30 p.m.-3:35 p.m.

1 stop17h 05m

Barcelona-El Prat

Fri 24/7

1:20 p.m.-3:35 p.m.

Nonstop11h 15m

C$ 1,327

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 25/7

11:15 p.m.-8:35 a.m.

1 stop24h 20m

Barcelona-El Prat

Wed 5/8

1:20 p.m.-3:45 p.m.

Nonstop11h 25m

C$ 1,327

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 6/9

7:20 a.m.-8:35 a.m.

1 stop16h 15m

Barcelona-El Prat

Wed 16/9

1:20 p.m.-3:59 p.m.

Nonstop11h 39m

C$ 1,327

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 18/8

3:35 p.m.-11:10 a.m.

Nonstop10h 35m

Barcelona-El Prat

Mon 7/9

1:25 p.m.-11:47 a.m.

1 stop31h 22m

C$ 1,328

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 21/7

11:02 a.m.-1:15 p.m.

2 stops17h 13m

Barcelona-El Prat

Thu 30/7

6:40 a.m.-2:22 p.m.

2 stops16h 42m

C$ 1,336

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/5

Showing 1-10 of 24 resultsSorted by cheapest first
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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?

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 44 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$ 483). Flying from Seattle to Barcelona in June is currently the most expensive (average of C$ 898). 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 18 May 2026.

When flying from Seattle to Barcelona, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Seattle to Barcelona?

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. 0 airlines 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 1 outbound flight to Barcelona per day.

  • How long is the flight from Seattle to Barcelona?

    Departing from Seattle to Barcelona will take you 19h 05m. The distance between Seattle and Barcelona is about 8724 km. This flight may include one or multiple stops.

  • What are the most reliable airlines from Seattle to Barcelona?

    No one likes to see their flight delayed. When booking a flight from Seattle to Barcelona consider choosing KLM (50%), Air France (50%) or Delta (50%) as they are the most reliable in getting you off to your destination on time.

  • 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$ 483). Flying from Seattle to Barcelona in June is currently the most expensive (average of C$ 898). 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

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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