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Cheap flights from Seattle to Barcelona-El Prat Airport from C$ 612

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
20 Apr — 27 Apr1
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 15 April 2025.

Round-trip from

C$ 680

One-way from

C$ 612

Popular in

June

Cheapest in

November

Average price

C$ 1,137
United Airlines
  • United Airlines
  • 7/10-22/10
  • 2 total stops
  • 31h 33m total
  • Seattle to Barcelona
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WestJet
  • WestJet
  • 26/8
  • 2 total stops
  • 41h 45m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (C$ 526 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 63 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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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 15 April 2025.

Tue 7/107:20 a.m.SEA - BCN
1 stop15h 30mUnited Airlines
Wed 22/103:15 p.m.BCN - SEA
1 stop16h 03mUnited Airlines
Deal found 15/4C$ 680
Fri 10/108:20 p.m.SEA - BCN
1 stop13h 15mBritish Airways
Sat 18/107:25 p.m.BCN - SEA
1 stop25h 05mBritish Airways
Deal found 15/4C$ 840
Thu 9/1011:25 a.m.SEA - BCN
2 stops19h 15mDelta
Sun 19/106:20 a.m.BCN - SEA
1 stop14h 30mDelta
Deal found 15/4C$ 875
Fri 5/91:45 p.m.SEA - BCN
2 stops15h 20mSWISS
Mon 15/96:35 p.m.BCN - SEA
2 stops33h 01mSWISS
Deal found 15/4C$ 937
Mon 28/411:45 p.m.SEA - BCN
1 stop28h 30mMultiple Airlines
Wed 14/51:15 p.m.BCN - SEA
1 stop30h 30mMultiple Airlines
Deal found 14/4C$ 943
Wed 23/46:10 p.m.SEA - BCN
1 stop15h 40mKLM
Mon 28/41:20 p.m.BCN - SEA
1 stop31h 25mKLM
Deal found 15/4C$ 1,004
Thu 14/87:20 a.m.SEA - BCN
2 stops25h 50mScandinavian Airlines
Sun 24/87:00 p.m.BCN - SEA
1 stop27h 50mScandinavian Airlines
Deal found 15/4C$ 1,021
Sat 13/122:00 p.m.SEA - BCN
1 stop14h 10mLufthansa
Fri 2/17:45 a.m.BCN - SEA
1 stop14h 35mLufthansa
Deal found 15/4C$ 1,239
Fri 20/63:39 p.m.SEA - BCN
2 stops35h 46mWestJet
Sun 6/711:20 a.m.BCN - SEA
2 stops34h 11mWestJet
Deal found 15/4C$ 1,402
Fri 6/67:10 p.m.SEA - BCN
1 stop33h 30mTurkish Airlines
Fri 20/66:30 p.m.BCN - SEA
2 stops35h 41mTurkish Airlines
Deal found 15/4C$ 1,555
Thu 17/411:24 a.m.SEA - BCN
2 stops20h 11mAir Europa
Thu 1/511:50 a.m.BCN - SEA
2 stops41h 13mAir Europa
Deal found 15/4C$ 2,011
Sun 11/55:30 a.m.SEA - BCN
2 stops17h 20mAir Canada
Thu 22/512:15 p.m.BCN - SEA
2 stops34h 58mAir Canada
Deal found 15/4C$ 2,311

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 15 April 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

Tue 7/10

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

1 stop15h 30m

Barcelona-El Prat

Wed 22/10

3:15 p.m.-10:18 p.m.

1 stop16h 03m

C$ 680

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 10/10

8:20 p.m.-6:35 p.m.

1 stop13h 15m

Barcelona-El Prat

Sat 18/10

7:25 p.m.-11:30 a.m.

1 stop25h 05m

C$ 840

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 9/10

11:25 a.m.-3:40 p.m.

2 stops19h 15m

Barcelona-El Prat

Sun 19/10

6:20 a.m.-11:50 a.m.

1 stop14h 30m

C$ 875

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 5/9

1:45 p.m.-2:05 p.m.

2 stops15h 20m

Barcelona-El Prat

Mon 15/9

6:35 p.m.-6:36 p.m.

2 stops33h 01m

C$ 937

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 28/4

11:45 p.m.-1:15 p.m.

1 stop28h 30m

Barcelona-El Prat

Wed 14/5

1:15 p.m.-10:45 a.m.

1 stop30h 30m

C$ 943

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 14/8

7:20 a.m.-6:10 p.m.

2 stops25h 50m

Barcelona-El Prat

Sun 24/8

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

1 stop27h 50m

C$ 1,021

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 20/6

3:39 p.m.-12:25 p.m.

2 stops35h 46m

Barcelona-El Prat

Thu 3/7

11:20 a.m.-12:31 p.m.

2 stops34h 11m

C$ 1,402

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 6/6

7:10 p.m.-1:40 p.m.

1 stop33h 30m

Barcelona-El Prat

Fri 20/6

6:30 p.m.-9:11 p.m.

2 stops35h 41m

C$ 1,555

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 20/6

6:50 p.m.-11:05 p.m.

2 stops19h 15m

Barcelona-El Prat

Sat 28/6

6:50 a.m.-12:25 p.m.

1 stop14h 35m

C$ 1,948

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 11/5

5:30 a.m.-7:50 a.m.

2 stops17h 20m

Barcelona-El Prat

Thu 22/5

12:15 p.m.-2:13 p.m.

2 stops34h 58m

C$ 2,311

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/4

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 11 April 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 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-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$ 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-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 15 April 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.

Rainfall in Barcelona-El Prat by month

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

In terms of precipitation, rainfall in Barcelona-El Prat Airport 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-El Prat Airport when rainfall is around 20.0 mm.

Temperature in Barcelona-El Prat by month

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

If weather is an important factor for your trip to Barcelona-El Prat Airport, 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-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 15 April 2025.
Read through reviews of airlines operating flights from Seattle to Barcelona, such as Delta, Finnair and SWISS. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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
7,917 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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
1,269 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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
1,578 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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.
United Airlines
7.4
Good
8,658 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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.
Turkish Airlines
7.3
Good
3,760 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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-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 United Airlines. Our recent data shows that you can find tickets from as low as C$ 680 on this airline. Additional options worth looking into are British Airways and Delta, starting at C$ 840 and C$ 875 round-trip. You may be able to fly from Seattle to Barcelona-El Prat Airport for 45% 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 WestJet (C$ 612), United Airlines (C$ 631), and Turkish Airlines (C$ 840).

  • 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$ 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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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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 718AverageC$ 794FlexibilityNo 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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