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Cheap flights from Seattle to Barcelona-El Prat Airport from C$ 376

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
18 Jul — 25 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Barcelona-El Prat

Enter your travel dates to find the best prices.

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 18 June 2026.

Wed 2/95:40 p.m.
SEA
-
BCN
1 stop19h 30m
Multiple Airlines
Thu 10/98:00 a.m.
BCN
-
SEA
2 stops19h 51m
Multiple Airlines
Deal found 17/6C$ 1,010
Sat 15/86:15 p.m.
SEA
-
BCN
1 stop18h 55m
Condor
Tue 25/810:25 a.m.
BCN
-
SEA
1 stop14h 15m
Condor
Deal found 16/6C$ 1,028
Sat 19/93:55 p.m.
SEA
-
BCN
1 stop32h 50m
Scandinavian Airlines
Fri 25/910:25 a.m.
BCN
-
SEA
1 stop36h 20m
Scandinavian Airlines
Deal found 17/6C$ 1,031
Wed 2/95:40 p.m.
SEA
-
BCN
1 stop19h 30m
Condor
Wed 23/910:25 a.m.
BCN
-
SEA
1 stop14h 15m
Condor
Deal found 17/6C$ 1,038
Mon 12/103:40 p.m.
SEA
-
BCN
1 stop14h 05m
Icelandair
Sat 17/103:45 p.m.
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 14/6C$ 1,052
Thu 1/107:00 p.m.
SEA
-
BCN
1 stop34h 45m
Icelandair
Sat 17/103:45 p.m.
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 14/6C$ 1,054
Thu 24/96:05 p.m.
SEA
-
BCN
1 stop19h 05m
Condor
Fri 30/105:00 p.m.
BCN
-
SEA
1 stop31h 35m
Condor
Deal found 15/6C$ 1,055
Sun 9/85:40 p.m.
SEA
-
BCN
1 stop13h 20m
Condor
Tue 18/85:00 p.m.
BCN
-
SEA
1 stop31h 40m
Condor
Deal found 16/6C$ 1,056
Tue 15/96:05 p.m.
SEA
-
BCN
2 stops22h 30m
Multiple Airlines
Tue 22/98:10 a.m.
BCN
-
SEA
2 stops16h 30m
Multiple Airlines
Deal found 15/6C$ 1,058
Mon 28/93:40 p.m.
SEA
-
BCN
1 stop14h 05m
Icelandair
Sat 17/103:45 p.m.
BCN
-
SEA
1 stop13h 55m
Icelandair
Deal found 15/6C$ 1,062
Wed 30/95:40 p.m.
SEA
-
BCN
1 stop19h 30m
Multiple Airlines
Thu 8/108:00 a.m.
BCN
-
SEA
2 stops22h 57m
Multiple Airlines
Deal found 15/6C$ 1,066
Sun 13/95:40 p.m.
SEA
-
BCN
1 stop19h 30m
Multiple Airlines
Sun 20/98:00 a.m.
BCN
-
SEA
2 stops20h 39m
Multiple Airlines
Deal found 16/6C$ 1,073

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 18 June 2026.

Round-trip from

C$ 1,010

One-way from

C$ 376

Popular in

June

Cheapest in

January

Average price

C$ 1,665
2/9-10/9
  • 2/9-10/9
  • 3 total stops
  • 39h 21m total
  • Seattle to Barcelona
Search Deals
1/8
  • 1/8
  • 2 total stops
  • 36h 35m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 404 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 75 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 629,999 searches. Data last updated 18 June 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

Tue 14/7

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

1 stop19h 05m

Barcelona-El Prat

Tue 21/7

8:00 a.m.-9:34 p.m.

2 stops22h 34m

C$ 1,215

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 14/7

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

1 stop19h 05m

Barcelona-El Prat

Tue 21/7

10:25 a.m.-3:40 p.m.

1 stop14h 15m

C$ 1,225

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 11/8

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

1 stop19h 05m

Barcelona-El Prat

Mon 17/8

10:15 a.m.-4:10 p.m.

1 stop14h 55m

C$ 1,286

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 15/9

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

Nonstop10h 35m

Barcelona-El Prat

Thu 24/9

6:20 a.m.-11:47 a.m.

1 stop14h 27m

C$ 1,341

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 1/10

9:57 a.m.-10:10 p.m.

2 stops27h 13m

Barcelona-El Prat

Fri 9/10

8:00 a.m.-9:25 p.m.

2 stops22h 25m

C$ 1,347

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 14/7

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

Nonstop10h 35m

Barcelona-El Prat

Tue 21/7

6:20 a.m.-11:33 a.m.

1 stop14h 13m

C$ 1,352

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 9/8

1:30 p.m.-2:50 p.m.

1 stop16h 20m

Barcelona-El Prat

Wed 19/8

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

Nonstop11h 25m

C$ 1,354

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 13/10

3:30 p.m.-11:10 a.m.

Nonstop10h 40m

Barcelona-El Prat

Tue 20/10

7:45 p.m.-11:52 a.m.

1 stop25h 07m

C$ 1,354

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 7/12

7:20 a.m.-11:10 a.m.

2 stops18h 50m

Barcelona-El Prat

Mon 21/12

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

1 stop14h 50m

C$ 1,408

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 5/7

5:40 p.m.-4:00 p.m.

1 stop13h 20m

Barcelona-El Prat

Fri 24/7

10:15 a.m.-4:00 p.m.

1 stop14h 45m

C$ 1,415

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/6

Showing 1-10 of 21 resultsSorted by cheapest first
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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 C$ 673). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,665). 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 18 June 2026.

When flying from Seattle to Barcelona-El Prat Airport, 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-El Prat Airport?

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?

    Located just 18.4 km from the city centre, Seattle/Tacoma Intl is the airport most travellers will use when flying to Barcelona-El Prat from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Barcelona-El Prat should be relatively easy as there is 1 daily outbound flight to Barcelona-El Prat from 0 different airlines.

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

    A quick flight from Seattle to Barcelona-El Prat Airport can take about 10h 35m. Condor provides one of the quickest options available for as low as C$ 1,341. The distance from Seattle to Barcelona-El Prat Airport is about 8724 km. This flight may include one or multiple stops.

  • 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%).

  • 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 C$ 673). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,665). 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

Travelling to a place near Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
Santa Susanna
L'Hospitalet de Llobregat
Malgrat de Mar

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

Yes, Cheapflights offers price alerts on Seattle to Barcelona-El Prat flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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