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Cheap flights from Seattle to Barcelona from C$ 683

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
6 Apr — 13 Apr1
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 1 April 2025.

Round-trip from

C$ 864

One-way from

C$ 683

Popular in

June

Cheapest in

November

Average price

C$ 1,171
Scandinavian Airlines
  • Scandinavian Airlines
  • 21/5-1/6
  • 2 total stops
  • 45h 00m total
  • Seattle to Barcelona
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14/5
  • 14/5
  • 3 total stops
  • 19h 45m total
  • Seattle to Barcelona
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Highest demand for flights based on searches. 24% potential increase in price (C$ 592 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 69 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 1 April 2025.

Tue 9/97:20 a.m.SEA - BCN
2 stops25h 50mScandinavian Airlines
Tue 30/97:00 p.m.BCN - SEA
1 stop28h 00mScandinavian Airlines
Deal found 30/3C$ 848
Tue 21/108:20 p.m.SEA - BCN
1 stop17h 25mBritish Airways
Tue 4/1112:20 p.m.BCN - SEA
2 stops19h 55mBritish Airways
Deal found 31/3C$ 881
Sun 26/108:00 a.m.SEA - BCN
1 stop16h 20mUnited Airlines
Fri 7/117:45 a.m.BCN - SEA
1 stop14h 35mUnited Airlines
Deal found 30/3C$ 904
Sun 12/1011:25 a.m.SEA - BCN
2 stops19h 15mDelta
Wed 22/109:30 a.m.BCN - SEA
1 stop21h 43mDelta
Deal found 31/3C$ 910
Tue 13/52:05 p.m.SEA - BCN
1 stop13h 20mMultiple Airlines
Wed 21/57:20 a.m.BCN - SEA
2 stops22h 08mMultiple Airlines
Deal found 29/3C$ 949
Tue 13/52:05 p.m.SEA - BCN
1 stop13h 20mWestJet
Wed 21/52:25 p.m.BCN - SEA
1 stop15h 03mWestJet
Deal found 29/3C$ 954
Sat 26/47:00 p.m.SEA - BCN
1 stop34h 45mIcelandair
Mon 5/53:55 p.m.BCN - SEA
1 stop13h 45mIcelandair
Deal found 31/3C$ 1,009
Wed 24/122:00 p.m.SEA - BCN
1 stop17h 15mLufthansa
Wed 31/126:50 a.m.BCN - SEA
1 stop14h 20mLufthansa
Deal found 30/3C$ 1,054
Wed 14/55:40 p.m.SEA - BCN
1 stop17h 25mFinnair
Wed 21/510:05 a.m.BCN - SEA
1 stop14h 55mFinnair
Deal found 30/3C$ 1,091
Sun 11/55:35 a.m.SEA - BCN
2 stops41h 15mAir Canada
Wed 21/512:15 p.m.BCN - SEA
1 stop16h 22mAir Canada
Deal found 29/3C$ 1,112
Mon 21/47:10 p.m.SEA - BCN
1 stop19h 00mTurkish Airlines
Thu 15/56:30 p.m.BCN - SEA
1 stop31h 45mTurkish Airlines
Deal found 30/3C$ 1,115
Sun 13/48:45 a.m.SEA - BCN
1 stop15h 35mKLM
Tue 22/47:40 p.m.BCN - SEA
1 stop25h 05mKLM
Deal found 30/3C$ 1,148

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 1 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

Wed 21/5

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

1 stop17h 10m

Barcelona-El Prat

Sun 1/6

7:00 p.m.-1:50 p.m.

1 stop27h 50m

C$ 864

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 13/5

2:05 p.m.-12:25 p.m.

1 stop13h 20m

Barcelona-El Prat

Wed 21/5

7:20 a.m.-8:28 p.m.

2 stops22h 08m

C$ 949

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 13/5

2:05 p.m.-12:25 p.m.

1 stop13h 20m

Barcelona-El Prat

Wed 21/5

2:25 p.m.-8:28 p.m.

1 stop15h 03m

C$ 954

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 21/4

8:20 p.m.-8:35 p.m.

1 stop15h 15m

Barcelona-El Prat

Fri 16/5

12:20 p.m.-9:03 p.m.

1 stop17h 43m

C$ 990

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 26/4

7:00 p.m.-2:45 p.m.

1 stop34h 45m

Barcelona-El Prat

Mon 5/5

3:55 p.m.-8:40 p.m.

1 stop13h 45m

C$ 1,009

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 8/4

7:10 a.m.-11:55 a.m.

1 stop19h 45m

Barcelona-El Prat

Thu 17/4

9:20 a.m.-8:45 p.m.

2 stops20h 25m

C$ 1,019

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 14/5

5:40 p.m.-8:05 p.m.

1 stop17h 25m

Barcelona-El Prat

Wed 21/5

10:05 a.m.-4:00 p.m.

1 stop14h 55m

C$ 1,091

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 29/4

7:08 a.m.-1:15 p.m.

2 stops21h 07m

Barcelona-El Prat

Wed 7/5

12:15 p.m.-1:19 p.m.

2 stops34h 04m

C$ 1,102

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 11/5

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

1 stop15h 30m

Barcelona-El Prat

Fri 23/5

12:15 p.m.-7:37 p.m.

1 stop16h 22m

C$ 1,112

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 21/4

7:10 p.m.-11:10 p.m.

1 stop19h 00m

Barcelona-El Prat

Thu 15/5

6:30 p.m.-5:15 p.m.

1 stop31h 45m

C$ 1,115

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/3

Showing 1-10 of 24 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.

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 28 March 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 1 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 1 April 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair 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
7,899 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

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
1,321 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

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
1,267 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

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
770 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

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
1,570 reviews
Delta
8.0
Very good
7,899 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

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$ 864 on this airline. Additional options worth looking into are WestJet and British Airways, starting at C$ 954 and C$ 990 round-trip. Users have found that Scandinavian Airlines is 33% 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 WestJet. According to our data, you can fly for as low as C$ 712. Users have also found prices from C$ 772 and C$ 775 on Icelandair and Turkish Airlines, 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 1 April 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 798AverageC$ 820FlexibilityNo 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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