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Cheap flights from Seattle to Barcelona-El Prat Airport from C$ 435

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
1 Jul — 8 Jul1
1 adult

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 26 June 2025.

Round-trip from

C$ 829

One-way from

C$ 435

Popular in

June

Cheapest in

November

Average price

C$ 1,725
Scandinavian Airlines
  • Scandinavian Airlines
  • 1/9-8/9
  • 3 total stops
  • 69h 48m total
  • Seattle to Barcelona
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Icelandair
  • Icelandair
  • 13/9
  • 1 total stop
  • 34h 45m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 526 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Seattle to Barcelona-El Prat

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 26 June 2025.

Wed 1/107:15 a.m.SEA - BCN
1 stop15h 35mUnited Airlines
Mon 13/101:50 p.m.BCN - SEA
1 stop31h 05mUnited Airlines
Deal found 24/6C$ 815
Sun 30/112:00 p.m.SEA - BCN
1 stop15h 00mDelta
Wed 17/1210:55 a.m.BCN - SEA
1 stop18h 54mDelta
Deal found 24/6C$ 816
Mon 1/94:00 p.m.SEA - BCN
1 stop17h 10mScandinavian Airlines
Mon 8/97:00 p.m.BCN - SEA
2 stops52h 38mScandinavian Airlines
Deal found 25/6C$ 829
Wed 17/93:19 p.m.SEA - BCN
2 stops32h 31mSWISS
Thu 25/99:40 a.m.BCN - SEA
2 stops17h 56mSWISS
Deal found 24/6C$ 831
Fri 28/112:35 p.m.SEA - BCN
1 stop13h 35mIcelandair
Tue 16/1211:45 a.m.BCN - SEA
1 stop14h 15mIcelandair
Deal found 24/6C$ 872
Mon 11/85:30 a.m.SEA - BCN
2 stops18h 50mVirgin Atlantic
Wed 27/89:30 a.m.BCN - SEA
2 stops19h 54mVirgin Atlantic
Deal found 24/6C$ 878
Thu 18/91:30 p.m.SEA - BCN
1 stop24h 25mBritish Airways
Mon 22/98:25 p.m.BCN - SEA
1 stop23h 45mBritish Airways
Deal found 26/6C$ 886
Fri 28/113:10 p.m.SEA - BCN
1 stop14h 35mLufthansa
Wed 17/127:45 a.m.BCN - SEA
1 stop14h 35mLufthansa
Deal found 24/6C$ 902
Thu 14/812:20 a.m.SEA - BCN
1 stop27h 55mMultiple Airlines
Sat 23/89:40 a.m.BCN - SEA
1 stop14h 10mMultiple Airlines
Deal found 24/6C$ 1,049
Sat 20/912:59 a.m.SEA - BCN
1 stop24h 31mAlaska Airlines
Wed 1/1012:50 p.m.BCN - SEA
1 stop18h 00mAlaska Airlines
Deal found 25/6C$ 1,055
Sun 31/81:15 p.m.SEA - BCN
2 stops35h 35mWestJet
Sun 7/92:25 p.m.BCN - SEA
2 stops32h 44mWestJet
Deal found 25/6C$ 1,106

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 26 June 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

Mon 1/9

4:00 p.m.-6:10 p.m.

1 stop17h 10m

Barcelona-El Prat

Mon 8/9

7:00 p.m.-2:38 p.m.

2 stops52h 38m

C$ 829

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 17/9

3:19 p.m.-8:50 a.m.

2 stops32h 31m

Barcelona-El Prat

Thu 25/9

9:40 a.m.-6:36 p.m.

2 stops17h 56m

C$ 831

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 15/9

7:15 a.m.-7:50 a.m.

1 stop15h 35m

Barcelona-El Prat

Thu 25/9

12:10 p.m.-6:31 p.m.

2 stops39h 21m

C$ 834

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 9/8

11:30 p.m.-9:20 a.m.

1 stop24h 50m

Barcelona-El Prat

Fri 22/8

9:30 a.m.-10:25 p.m.

1 stop21h 55m

C$ 861

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 11/8

5:30 a.m.-9:20 a.m.

2 stops18h 50m

Barcelona-El Prat

Wed 27/8

9:30 a.m.-8:24 p.m.

2 stops19h 54m

C$ 878

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 18/9

1:30 p.m.-10:55 p.m.

1 stop24h 25m

Barcelona-El Prat

Mon 22/9

8:25 p.m.-11:10 a.m.

1 stop23h 45m

C$ 885

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 3/9

1:55 p.m.-6:10 p.m.

2 stops19h 15m

Barcelona-El Prat

Mon 8/9

6:45 p.m.-11:55 a.m.

2 stops26h 10m

C$ 949

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 14/8

12:20 a.m.-1:15 p.m.

1 stop27h 55m

Barcelona-El Prat

Sat 23/8

9:40 a.m.-2:50 p.m.

1 stop14h 10m

C$ 1,049

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 20/9

12:59 a.m.-10:30 a.m.

1 stop24h 31m

Barcelona-El Prat

Wed 1/10

12:50 p.m.-9:50 p.m.

1 stop18h 00m

C$ 1,055

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 31/8

1:15 p.m.-9:50 a.m.

2 stops35h 35m

Barcelona-El Prat

Wed 10/9

2:25 p.m.-2:09 p.m.

2 stops32h 44m

C$ 1,106

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/6

Showing 1-10 of 20 results
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?

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 20 June 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 31 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$ 604). Flying from Seattle to Barcelona-El Prat Airport in July is currently the most expensive (average of C$ 787). 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 26 June 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 38% on airfare.

Reviews of airlines servicing Barcelona-El Prat

Get insights into the airlines that provide service to Barcelona-El Prat. 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-El Prat. Reviews last updated 26 June 2025.
Read reviews from past customers who have flown Alaska Airlines,Delta, andSWISS from Seattle to Barcelona-El Prat Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
SWISS
7.5
Good
1,649 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,838 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Virgin Atlantic
7.4
Good
654 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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 1 airline.

  • What are the cheapest airlines flying from Seattle to Barcelona-El Prat Airport round-trip?

    Our cheapest airline available from Seattle to Barcelona-El Prat Airport is Scandinavian Airlines. Our recent data shows that you can find tickets from as low as C$ 829 on this airline. Additional options worth looking into are SWISS and United Airlines, starting at C$ 831 and C$ 834 round-trip. You may be able to fly from Seattle to Barcelona-El Prat Airport for 31% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Seattle to Barcelona-El Prat Airport one-way?

    The cheapest airlines for a one-way flight from Seattle to Barcelona-El Prat Airport are Icelandair (C$ 435), WestJet (C$ 585), and United Airlines (C$ 640).

  • 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$ 604). Flying from Seattle to Barcelona-El Prat Airport in July is currently the most expensive (average of C$ 787). 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

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Top airline flying from Seattle to Barcelona-El Prat

Discover the top airline that operate flights from Seattle to Barcelona-El Prat. 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 26 June 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 706AverageC$ 840FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

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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