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Cheap flights from Seattle to Barcelona-El Prat Airport from C$ 436

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
13 Sep — 20 Sep1
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 14 August 2026.

Tue 29/911:41 a.m. -
2 stops25h 29m
Wed 14/1010:25 a.m. -
1 stop14h 15m
Deal found 13/8C$ 1,018
Fri 16/106:00 p.m. -
1 stop13h 05m
Mon 26/1010:15 a.m. -
1 stop14h 40m
Deal found 13/8C$ 1,020
Mon 19/1010:07 a.m. -
2 stops27h 03m
Sun 25/107:00 a.m. -
1 stop15h 55m
Deal found 13/8C$ 1,046
Fri 16/106:00 p.m. -
1 stop13h 05m
Wed 28/105:00 p.m. -
1 stop31h 55m
Deal found 13/8C$ 1,048
Wed 16/910:47 a.m. -
2 stops26h 23m
Tue 22/98:00 a.m. -
1 stop16h 40m
Deal found 11/8C$ 1,059
Sun 13/95:40 p.m. -
1 stop13h 20m
Wed 7/108:00 a.m. -
1 stop16h 40m
Deal found 13/8C$ 1,072
Tue 8/912:45 p.m. -
2 stops24h 25m
Tue 15/98:00 a.m. -
1 stop16h 40m
Deal found 9/8C$ 1,087
Tue 20/1011:54 a.m. -
2 stops25h 16m
Mon 26/1010:15 a.m. -
1 stop14h 40m
Deal found 12/8C$ 1,094
Wed 23/912:05 p.m. -
2 stops25h 05m
Wed 30/98:00 a.m. -
1 stop16h 40m
Deal found 9/8C$ 1,096
Fri 18/93:40 p.m. -
1 stop14h 05m
Fri 9/103:45 p.m. -
1 stop13h 55m
Deal found 10/8C$ 1,097
Sun 13/95:40 p.m. -
1 stop13h 20m
Tue 6/105:00 p.m. -
1 stop31h 40m
Deal found 13/8C$ 1,100
Tue 8/912:45 p.m. -
2 stops24h 25m
Wed 16/98:00 a.m. -
1 stop16h 40m
Deal found 12/8C$ 1,101

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 14 August 2026.

Round-trip from

C$ 1,018

One-way from

C$ 436

Popular in

June

Cheapest in

January

Average price

C$ 1,245
Condor
  • Condor
  • 29/9-14/10
  • 3 total stops
  • 39h 44m total
  • Seattle to Barcelona
Search Deals
29/9
  • 29/9
  • 2 total stops
  • 17h 28m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 353 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 72 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
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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 14 August 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 Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Tue 15/9

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

1 stop19h 05m

Barcelona-El Prat

Sun 11/10

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

1 stop14h 15m

C$ 1,196

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Mon 23/11

7:05 p.m.-10:55 a.m.

1 stop30h 50m

Barcelona-El Prat

Fri 11/12

12:20 p.m.-5:10 p.m.

1 stop37h 50m

C$ 1,271

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Mon 24/8

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

2 stops31h 10m

Barcelona-El Prat

Sat 12/9

8:00 a.m.-11:12 p.m.

2 stops24h 12m

C$ 1,283

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sat 19/9

3:55 p.m.-6:10 p.m.

1 stop17h 15m

Barcelona-El Prat

Sat 10/10

10:45 a.m.-1:45 p.m.

2 stops36h 00m

C$ 1,316

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sat 3/10

11:08 p.m.-8:35 a.m.

1 stop24h 27m

Barcelona-El Prat

Fri 16/10

1:20 p.m.-3:44 p.m.

Nonstop11h 24m

C$ 1,317

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sun 22/11

7:05 p.m.-5:05 p.m.

1 stop37h 00m

Barcelona-El Prat

Mon 30/11

6:30 p.m.-5:10 p.m.

1 stop31h 40m

C$ 1,327

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Tue 8/9

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

Nonstop10h 35m

Barcelona-El Prat

Tue 15/9

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

1 stop14h 27m

C$ 1,345

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Tue 8/9

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

Nonstop10h 35m

Barcelona-El Prat

Wed 16/9

11:10 a.m.-4:35 p.m.

1 stop14h 25m

C$ 1,345

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Tue 15/9

10:42 a.m.-1:15 p.m.

1 stop17h 33m

Barcelona-El Prat

Wed 7/10

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

2 stops16h 42m

C$ 1,349
Quickest round-trip

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Thu 1/10

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

Nonstop10h 40m

Barcelona-El Prat

Wed 14/10

1:20 p.m.-3:44 p.m.

Nonstop11h 24m

C$ 1,380

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/8

Showing 1-10 of 20 resultsSorted by cheapest first
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?

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$ 664). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,656). 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 14 August 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?

Airfare is typical for this route at the moment.

Seattle to Barcelona-El Prat Airport flights typically cost between C$ 958 and C$ 1,513 in September.
The cheapest round-trip price found within the last 5 days was C$ 1,018 on Multiple Airlines (29 Sep-14 Oct).

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 17h 15m. Scandinavian Airlines provides one of the quickest options available for as low as C$ 1,305. The distance from Seattle to Barcelona-El Prat Airport is about 8724 km.

  • 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 (81%), Air France (81%), Delta( 81%).

  • 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$ 664). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,656). 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
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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