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Cheap flights from Seattle to Barcelona-El Prat Airport from C$ 563

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 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 7 November 2025.

Sun 7/128:10 a.m.SEA - BCN
1 stop15h 10mUnited Airlines
Sat 13/121:55 p.m.BCN - SEA
2 stops41h 21mUnited Airlines
Deal found 6/11C$ 707
Fri 12/127:20 a.m.SEA - BCN
1 stop15h 40mMultiple Airlines
Wed 24/129:30 a.m.BCN - SEA
1 stop23h 28mMultiple Airlines
Deal found 5/11C$ 824
Sun 7/127:20 a.m.SEA - BCN
2 stops18h 50mDelta
Sun 21/1210:55 a.m.BCN - SEA
1 stop22h 03mDelta
Deal found 5/11C$ 828
Fri 12/127:20 a.m.SEA - BCN
1 stop15h 40mVirgin Atlantic
Wed 24/129:30 a.m.BCN - SEA
2 stops22h 57mVirgin Atlantic
Deal found 5/11C$ 830
Sun 7/123:10 p.m.SEA - BCN
1 stop14h 35mLufthansa
Sat 13/126:20 p.m.BCN - SEA
1 stop28h 00mLufthansa
Deal found 6/11C$ 831
Fri 12/125:00 a.m.SEA - BCN
2 stops18h 20mUnited Airlines
Tue 23/1211:55 a.m.BCN - SEA
1 stop34h 25mUnited Airlines
Deal found 5/11C$ 835
Sat 6/128:10 a.m.SEA - BCN
1 stop15h 10mUnited Airlines
Fri 12/121:50 p.m.BCN - SEA
1 stop31h 20mUnited Airlines
Deal found 6/11C$ 839
Sun 30/1111:20 p.m.SEA - BCN
1 stop24h 40mMultiple Airlines
Tue 16/1212:30 p.m.BCN - SEA
1 stop18h 20mMultiple Airlines
Deal found 6/11C$ 930
Tue 2/121:40 p.m.SEA - BCN
1 stop16h 20mDelta
Mon 8/126:00 a.m.BCN - SEA
1 stop14h 50mDelta
Deal found 6/11C$ 956
Wed 3/122:05 p.m.SEA - BCN
1 stop14h 55mDelta
Thu 11/126:00 a.m.BCN - SEA
1 stop14h 50mDelta
Deal found 6/11C$ 958
Wed 19/117:20 a.m.SEA - BCN
1 stop15h 40mKLM
Mon 24/116:00 a.m.BCN - SEA
1 stop14h 45mKLM
Deal found 5/11C$ 959

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 7 November 2025.

Round-trip from

C$ 687

One-way from

C$ 563

Popular in

June

Cheapest in

November

Average price

C$ 944
Icelandair
  • Icelandair
  • 16/1-23/1
  • 2 total stops
  • 27h 50m total
  • Seattle to Barcelona
Search Deals
United Airlines
  • United Airlines
  • 29/1
  • 2 total stops
  • 19h 00m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 557 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 75 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 7 November 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

Wed 4/3

10:55 a.m.-7:00 p.m.

2 stops23h 05m

Barcelona-El Prat

Mon 23/3

2:55 p.m.-10:32 p.m.

2 stops39h 37m

C$ 703

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/3

3:10 p.m.-2:45 p.m.

1 stop14h 35m

Barcelona-El Prat

Mon 23/3

6:30 p.m.-1:10 p.m.

1 stop26h 40m

C$ 705

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 6/12

8:10 a.m.-8:20 a.m.

1 stop15h 10m

Barcelona-El Prat

Fri 12/12

1:50 p.m.-12:10 p.m.

1 stop31h 20m

C$ 839

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 19/3

10:55 a.m.-6:20 p.m.

2 stops23h 25m

Barcelona-El Prat

Tue 7/4

7:00 p.m.-11:40 p.m.

2 stops37h 40m

C$ 873

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 21/2

1:40 p.m.-2:00 p.m.

1 stop15h 20m

Barcelona-El Prat

Sun 1/3

6:00 a.m.-11:35 a.m.

1 stop14h 35m

C$ 928

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 21/2

11:17 a.m.-2:00 p.m.

2 stops17h 43m

Barcelona-El Prat

Sat 14/3

6:00 a.m.-6:25 p.m.

2 stops20h 25m

C$ 948

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 2/12

1:40 p.m.-3:00 p.m.

1 stop16h 20m

Barcelona-El Prat

Sun 14/12

1:00 p.m.-11:50 a.m.

1 stop31h 50m

C$ 956

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 2/12

1:40 p.m.-3:00 p.m.

1 stop16h 20m

Barcelona-El Prat

Tue 9/12

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

1 stop14h 50m

C$ 956

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 2/12

1:40 p.m.-3:00 p.m.

1 stop16h 20m

Barcelona-El Prat

Thu 11/12

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

1 stop14h 50m

C$ 956

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 2/12

1:40 p.m.-3:00 p.m.

1 stop16h 20m

Barcelona-El Prat

Mon 8/12

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

1 stop14h 50m

C$ 956

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 21 results
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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?

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 31 October 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, October is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of C$ 552). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,244). 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 7 November 2025.

One of the essential ways to save on airfare from Seattle to Barcelona-El Prat Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 37% on airfare.

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 are 0 daily outbound flights 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 14h 35m. SWISS provides one of the quickest options available for as low as C$ 705. The distance from Seattle to Barcelona-El Prat Airport is about 8724 km. This flight may include one or multiple stops.

  • 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, October is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of C$ 552). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,244). 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
Badalona
L'Hospitalet de Llobregat

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Fly with Cheapflights

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

Deals for Seattle to Barcelona-El Prat flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Barcelona-El Prat for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Seattle to Barcelona-El Prat with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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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