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Cheap flights from Seattle to Barcelona from C$ 633

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
27 Apr — 4 May1
1 adult

Cheap 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 22 April 2025.

Round-trip from

C$ 855

One-way from

C$ 633

Popular in

June

Cheapest in

November

Average price

C$ 1,131
Scandinavian Airlines
  • Scandinavian Airlines
  • 22/8-9/9
  • 3 total stops
  • 53h 23m total
  • Seattle to Barcelona
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United Airlines
  • United Airlines
  • 16/9
  • 1 total stop
  • 24h 25m total
  • Seattle to Barcelona
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Highest demand for flights based on searches. 23% potential increase in price (C$ 529 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 63 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Barcelona

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 22 April 2025.

Fri 22/84:00 p.m.SEA - BCN
1 stop17h 10mScandinavian Airlines
Tue 9/97:00 p.m.BCN - SEA
2 stops36h 13mScandinavian Airlines
Deal found 21/4C$ 855
Mon 3/112:07 p.m.SEA - BCN
1 stop13h 58mUnited Airlines
Tue 11/113:05 p.m.BCN - SEA
1 stop16h 24mUnited Airlines
Deal found 21/4C$ 859
Sat 27/123:05 p.m.SEA - BCN
2 stops33h 45mLufthansa
Fri 9/19:10 a.m.BCN - SEA
2 stops22h 19mLufthansa
Deal found 21/4C$ 880
Wed 5/1112:55 p.m.SEA - BCN
2 stops25h 05mSWISS
Wed 12/116:45 a.m.BCN - SEA
2 stops24h 44mSWISS
Deal found 21/4C$ 909
Mon 18/811:35 p.m.SEA - BCN
1 stop24h 45mDelta
Wed 10/99:00 a.m.BCN - SEA
1 stop22h 48mDelta
Deal found 21/4C$ 942
Thu 6/117:20 a.m.SEA - BCN
1 stop15h 40mKLM
Mon 10/117:55 p.m.BCN - SEA
1 stop24h 55mKLM
Deal found 21/4C$ 943
Sun 17/85:35 a.m.SEA - BCN
2 stops17h 15mAir Canada
Fri 12/96:50 a.m.BCN - SEA
2 stops16h 26mAir Canada
Deal found 21/4C$ 971
Thu 6/118:00 a.m.SEA - BCN
2 stops40h 20mAustrian Airlines
Wed 12/1110:05 a.m.BCN - SEA
2 stops43h 05mAustrian Airlines
Deal found 21/4C$ 993
Sat 11/108:20 p.m.SEA - BCN
1 stop13h 05mBritish Airways
Fri 17/109:25 p.m.BCN - SEA
1 stop23h 10mBritish Airways
Deal found 20/4C$ 1,055
Thu 31/77:10 p.m.SEA - BCN
1 stop19h 00mTurkish Airlines
Tue 19/87:50 a.m.BCN - SEA
1 stop18h 25mTurkish Airlines
Deal found 22/4C$ 1,076
Sun 3/82:05 p.m.SEA - BCN
2 stops34h 45mWestJet
Sun 10/811:20 a.m.BCN - SEA
2 stops34h 11mWestJet
Deal found 20/4C$ 1,308
Thu 21/812:00 p.m.SEA - BCN
1 stop19h 30mFinnair
Mon 8/99:10 p.m.BCN - SEA
2 stops32h 25mFinnair
Deal found 21/4C$ 1,379

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 22 April 2025.
Use the filters below to find and compare flights from Seattle to Barcelona that are best for you.

Fly from

Seattle

Fly to

Barcelona

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 22/8

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

1 stop17h 10m

Barcelona-El Prat

Tue 9/9

7:00 p.m.-10:13 p.m.

2 stops36h 13m

C$ 855

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 9/10

7:20 a.m.-7:50 a.m.

1 stop15h 30m

Barcelona-El Prat

Tue 14/10

12:15 p.m.-3:42 p.m.

2 stops36h 27m

C$ 891

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 6/10

2:55 p.m.-7:50 a.m.

2 stops31h 55m

Barcelona-El Prat

Mon 13/10

1:50 p.m.-11:55 a.m.

1 stop31h 05m

C$ 896

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 18/8

10:55 p.m.-6:00 a.m.

1 stop22h 05m

Barcelona-El Prat

Thu 11/9

9:30 a.m.-7:36 p.m.

1 stop19h 06m

C$ 942

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 9/10

5:40 p.m.-4:25 p.m.

1 stop13h 45m

Barcelona-El Prat

Mon 13/10

5:20 p.m.-11:50 a.m.

1 stop27h 30m

C$ 970

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 17/8

5:35 a.m.-7:50 a.m.

2 stops17h 15m

Barcelona-El Prat

Fri 12/9

6:50 a.m.-2:16 p.m.

2 stops16h 26m

C$ 971

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 9/10

8:00 a.m.-9:10 a.m.

2 stops40h 10m

Barcelona-El Prat

Wed 15/10

8:40 p.m.-8:42 p.m.

2 stops33h 02m

C$ 993

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 11/10

8:20 p.m.-6:25 p.m.

1 stop13h 05m

Barcelona-El Prat

Fri 17/10

9:25 p.m.-11:35 a.m.

1 stop23h 10m

C$ 1,055

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 31/7

12:30 p.m.-5:05 p.m.

1 stop19h 35m

Barcelona-El Prat

Thu 14/8

7:50 a.m.-5:15 p.m.

1 stop18h 25m

C$ 1,076

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 4/8

4:25 p.m.-7:10 p.m.

1 stop17h 45m

Barcelona-El Prat

Mon 18/8

2:55 p.m.-6:36 p.m.

2 stops36h 41m

C$ 1,124

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/4

Showing 1-10 of 20 results
1
2

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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Barcelona. Price data was last updated on 18 April 2025.

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 11 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$ 604). Flying from Seattle to Barcelona in July is currently the most expensive (average of C$ 802). 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 22 April 2025.

One of the essential ways to save on airfare from Seattle to Barcelona 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.

Rainfall in Barcelona by month

Plan your trip to Barcelona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Barcelona ranges from 20.0 - 91.0 mm per month. October is typically the wettest month, when rainfall can reach 91.0 mm. July is typically the driest time to visit Barcelona when rainfall is around 20.0 mm.

Temperature in Barcelona by month

Plan your trip to Barcelona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Barcelona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 9.0 C).

Reviews of airlines servicing Barcelona

Get insights into the airlines that provide service to Barcelona. 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. Reviews last updated 22 April 2025.
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,272 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,582 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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. 1 airline 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 0 outbound flights to Barcelona per day.

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

    Our cheapest airline available from Seattle to Barcelona is Scandinavian Airlines. Our recent data shows that you can find tickets from as low as C$ 855 on this airline. Additional options worth looking into are United Airlines and Lufthansa, starting at C$ 891 and C$ 896 round-trip. Users have found that Scandinavian Airlines is 31% cheaper than the other options available to this destination.

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

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as C$ 633. Users have also found prices from C$ 662 and C$ 1,361 on WestJet and TAP AIR PORTUGAL, respectively.

  • 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$ 604). Flying from Seattle to Barcelona in July is currently the most expensive (average of C$ 802). 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

Top airline flying from Seattle to Barcelona

Discover the top airline that operate flights from Seattle to Barcelona. 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 22 April 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 713AverageC$ 789FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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