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Cheap flights from Seattle to Barcelona from C$ 450

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
26 Jan — 2 Feb1
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 21 January 2025.

Round-trip from

C$ 833

One-way from

C$ 450

Popular in

June

Cheapest in

November

Average price

C$ 1,019
Aer Lingus
  • Aer Lingus
  • 9/3-26/3
  • 2 total stops
  • 31h 00m total
  • Seattle to Barcelona
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3/3
  • 3/3
  • 3 total stops
  • 51h 36m total
  • Seattle to Barcelona
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Highest demand for flights based on searches. 22% potential increase in price (C$ 551 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 68 potential savings vs. average RT price).
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Average for round-trip flights in January 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 21 January 2025.

Sun 9/39:00 p.m.SEA - BCN
1 stop15h 15mAer Lingus
Wed 26/311:30 a.m.BCN - SEA
1 stop15h 45mAer Lingus
Deal found 21/1C$ 833
Mon 17/311:25 p.m.SEA - BCN
1 stop25h 35mUnited Airlines
Tue 1/412:00 p.m.BCN - SEA
1 stop32h 08mUnited Airlines
Deal found 21/1C$ 838
Tue 4/36:03 a.m.SEA - BCN
1 stop26h 32mFinnair
Tue 11/311:00 a.m.BCN - SEA
1 stop20h 26mFinnair
Deal found 20/1C$ 843
Tue 28/16:15 a.m.SEA - BCN
1 stop16h 45mKLM
Tue 11/39:45 a.m.BCN - SEA
1 stop20h 37mKLM
Deal found 21/1C$ 849
Wed 5/212:35 p.m.SEA - BCN
1 stop13h 35mDelta
Tue 11/210:15 a.m.BCN - SEA
1 stop20h 52mDelta
Deal found 21/1C$ 866
Wed 12/33:00 p.m.SEA - BCN
1 stop17h 15mLufthansa
Wed 19/36:50 a.m.BCN - SEA
1 stop14h 20mLufthansa
Deal found 21/1C$ 885
Wed 19/23:24 p.m.SEA - BCN
2 stops18h 51mSWISS
Mon 24/22:55 p.m.BCN - SEA
2 stops39h 20mSWISS
Deal found 21/1C$ 895
Tue 1/45:10 p.m.SEA - BCN
3 stops37h 20mMultiple Airlines
Tue 8/48:00 a.m.BCN - SEA
2 stops23h 26mMultiple Airlines
Deal found 21/1C$ 923
Fri 7/36:50 p.m.SEA - BCN
1 stop16h 00mBritish Airways
Fri 14/310:00 a.m.BCN - SEA
1 stop15h 55mBritish Airways
Deal found 21/1C$ 937
Tue 22/47:05 p.m.SEA - BCN
1 stop33h 35mTurkish Airlines
Mon 28/47:30 a.m.BCN - SEA
1 stop18h 40mTurkish Airlines
Deal found 20/1C$ 1,055
Sun 11/53:45 p.m.SEA - BCN
1 stop14h 00mIcelandair
Sat 31/53:45 p.m.BCN - SEA
1 stop13h 55mIcelandair
Deal found 21/1C$ 1,209
Mon 7/45:45 a.m.SEA - BCN
2 stops17h 05mAir Canada
Thu 17/412:15 p.m.BCN - SEA
2 stops35h 08mAir Canada
Deal found 20/1C$ 1,395

Find flights from Seattle to Barcelona within your budget

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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 9/3

9:00 p.m.-8:15 p.m.

1 stop15h 15m

Barcelona-El Prat

Wed 26/3

11:30 a.m.-7:15 p.m.

1 stop15h 45m

C$ 833

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 17/3

11:25 p.m.-9:00 a.m.

1 stop25h 35m

Barcelona-El Prat

Tue 1/4

12:00 p.m.-11:08 a.m.

1 stop32h 08m

C$ 838

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 4/3

6:03 a.m.-5:35 p.m.

1 stop26h 32m

Barcelona-El Prat

Tue 11/3

11:00 a.m.-11:26 p.m.

1 stop20h 26m

C$ 843

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 5/2

12:35 p.m.-11:10 a.m.

1 stop13h 35m

Barcelona-El Prat

Tue 11/2

10:15 a.m.-10:07 p.m.

1 stop20h 52m

C$ 866

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 12/3

3:00 p.m.-4:15 p.m.

1 stop17h 15m

Barcelona-El Prat

Wed 19/3

6:50 a.m.-1:10 p.m.

1 stop14h 20m

C$ 885

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 19/2

3:24 p.m.-7:15 p.m.

2 stops18h 51m

Barcelona-El Prat

Mon 24/2

2:55 p.m.-9:15 p.m.

2 stops39h 20m

C$ 895

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 1/4

5:10 p.m.-3:30 p.m.

3 stops37h 20m

Barcelona-El Prat

Tue 8/4

8:00 a.m.-10:26 p.m.

2 stops23h 26m

C$ 923

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 7/3

6:50 p.m.-7:50 p.m.

1 stop16h 00m

Barcelona-El Prat

Fri 14/3

10:00 a.m.-5:55 p.m.

1 stop15h 55m

C$ 937

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 21/2

6:15 a.m.-8:40 a.m.

1 stop17h 25m

Barcelona-El Prat

Sat 8/3

10:15 a.m.-10:25 p.m.

1 stop21h 10m

C$ 993

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 22/4

7:05 p.m.-1:40 p.m.

1 stop33h 35m

Barcelona-El Prat

Mon 28/4

7:30 a.m.-5:10 p.m.

1 stop18h 40m

C$ 1,055

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/1

Showing 1-10 of 21 results
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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.

Travel insights for flights from Seattle to Barcelona

Get recent, data-driven insights about flights from Seattle to Barcelona including ideal travel times, pricing trends, and more.

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 17 January 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 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?

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 21 January 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 21 January 2025.
Peruse reviews from past customers who have flown with KLM and United Airlines from Seattle to Barcelona to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

United Airlines
7.4
Good
8,984 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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. 0 airlines 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 Aer Lingus. Our recent data shows that you can find tickets from as low as C$ 833 on this airline. Additional options worth looking into are United Airlines and Finnair, starting at C$ 838 and C$ 843 round-trip. Users have found that Aer Lingus is 36% 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$ 659. Users have also found prices from C$ 750 and C$ 976 on British Airways and WestJet, 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

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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

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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?

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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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