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$319+ Cheap flights from Seattle (SEA) to Barcelona

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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Barcelona are usually found in November or February, booked 31 days in advance, depart on a Monday or Tuesday and return on a Tuesday

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 February 20, 2025.

Round-trip from

$566
(Delta)

One-way from

$319
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$688
From Seattle/Tacoma Intl to Barcelona
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One-way flight from Seattle/Tacoma Intl to Barcelona
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Highest demand for flights based on searches. 21% potential increase in price ($247 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/316:45 pmSEA - BCN
1 stop18h 40mAer Lingus
Tue 4/811:00 amBCN - SEA
1 stop14h 59mAer Lingus
Deal found 2/20$567
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:00 pmSEA - BCN
2 stops17h 15mMultiple Airlines
Wed 5/72:25 pmBCN - SEA
1 stop15h 03mMultiple Airlines
Deal found 2/20$594
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:00 amSEA - BCN
1 stop15h 20mUnited Airlines
Wed 11/1912:15 pmBCN - SEA
2 stops41h 57mUnited Airlines
Deal found 2/20$597
This oojo deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:50 pmSEA - BCN
1 stop16h 20mBritish Airways
Wed 11/191:30 pmBCN - SEA
1 stop17h 19mBritish Airways
Deal found 2/20$618
This Flightnetwork deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/15:45 amSEA - BCN
2 stops18h 35mAir Canada
Tue 4/812:10 pmBCN - SEA
2 stops18h 16mAir Canada
Deal found 2/20$632
This FlightHub deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/138:00 pmSEA - BCN
1 stop31h 00mTurkish Airlines
Tue 3/257:50 amBCN - SEA
1 stop18h 15mTurkish Airlines
Deal found 2/20$638
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2311:14 pmSEA - BCN
1 stop25h 46mAmerican Airlines
Tue 4/810:45 amBCN - SEA
1 stop21h 24mAmerican Airlines
Deal found 2/20$672
This FlightHub deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/174:20 pmSEA - BCN
1 stop16h 50mScandinavian Airlines
Thu 9/2510:30 amBCN - SEA
2 stops36h 30mScandinavian Airlines
Deal found 2/20$789
This StudentUniverse deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:31 amSEA - BCN
2 stops22h 34mSWISS
Wed 10/299:50 amBCN - SEA
2 stops20h 39mSWISS
Deal found 2/20$813

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 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Seattle

Fly to

Barcelona

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 3/31

6:45 pm-10:25 pm

1 stop18h 40m

Barcelona-El Prat

Tue 4/8

11:00 am-4:59 pm

1 stop14h 59m

$567

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 4/29

7:00 pm-9:15 pm

2 stops17h 15m

Barcelona-El Prat

Wed 5/7

2:25 pm-8:28 pm

1 stop15h 03m

$594

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 4/1

5:45 am-9:20 am

2 stops18h 35m

Barcelona-El Prat

Tue 4/8

12:10 pm-9:26 pm

2 stops18h 16m

$632

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 3/13

8:00 pm-11:00 am

1 stop31h 00m

Barcelona-El Prat

Tue 3/25

7:50 am-6:05 pm

1 stop18h 15m

$638

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 4/1

6:05 am-9:20 am

1 stop18h 15m

Barcelona-El Prat

Tue 4/8

12:10 pm-10:50 pm

3 stops43h 40m

$661

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 3/23

11:14 pm-9:00 am

1 stop25h 46m

Barcelona-El Prat

Tue 4/8

10:45 am-11:09 pm

1 stop21h 24m

$672

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/2

2:15 pm-3:30 pm

1 stop16h 15m

Barcelona-El Prat

Sun 4/6

6:55 pm-12:25 pm

1 stop26h 30m

$864

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 5/12

1:30 pm-8:35 pm

1 stop22h 05m

Barcelona-El Prat

Mon 5/19

7:10 pm-11:10 am

1 stop25h 00m

$873

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 3/4

11:30 am-12:45 am

3 stops28h 15m

$323

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 6/10

7:05 am-12:25 pm

1 stop20h 20m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

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 February 14, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Barcelona, you should look to book at least 31 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $523). Flying from Seattle to Barcelona in June is currently the most expensive (average of $1,096). 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 February 20, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Barcelona in the evening. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Seattle to Barcelona?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Barcelona. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Barcelona flight should consider departing on Wednesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona when rainfall is around 0.8 in.

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 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 February 20, 2025.
Read through reviews of airlines operating flights from Seattle to Barcelona, such as Delta, KLM and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

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
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

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
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

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
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

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.

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

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
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Boarding

8.2

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?

    For a flight from Seattle to Barcelona, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 outbound flights to Barcelona per day. 15 airlines have flights to Barcelona from Seattle/Tacoma Intl on a regular basis.

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

    Our cheapest airline available from Seattle to Barcelona is Delta. Our recent data shows that you can find tickets from as low as $566 on this airline. Additional options worth looking into are Aer Lingus and British Airways, starting at $567 and $569 round-trip. Users have found that Delta is 38% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $471. However, be on the lookout for offers from Turkish Airlines and British Airways, as they are both options that can get you from Seattle to Barcelona for a low price.

  • Where are the most common layover locations when flying from Seattle to Barcelona?

    Seattle to Barcelona flights have a layover in London most often. Paris is the second most popular location for layovers on flights from Seattle to Barcelona. Calgary comes next as the third most popular layover location for Seattle to Barcelona flights.

  • What are some popular things to do or see while on a layover in London?

    Most London visitors opt to spend their time experiencing Hyde Park, Piccadilly Circus, and Buckingham Palace. Hyde Park, Piccadilly Circus and Buckingham Palace are located about 12.5 mi, 14.1 mi, and 13.7 mi, respectively from London Heathrow if you are interested in checking them out. Those on a layover in London in need of a rental car can book one at London Heathrow for about $36.

  • What are some popular points of interest to see during a layover in Paris?

    Most Paris visitors opt to spend their time at Eiffel Tower, Champs-Elysées, and Louvre Museum. Those on a layover in Paris interested in visiting Eiffel Tower, Champs-Elysées, or Louvre Museum can do so by traveling 15.8 mi, 14.7 mi, and 14.3 mi, respectively from Paris Charles de Gaulle. Those landing in Paris looking to spend some time exploring during their layover can rent a car for about $38 per day.

  • What are points of interest worth seeing during a layover in Calgary?

    The majority of Calgary visitors spend their time at Calgary Tower, Heritage Park Historical Village, and TELUS Spark. Those on a layover in Calgary interested in visiting Calgary Tower, Heritage Park Historical Village, or TELUS Spark can do so by traveling 5.9 mi, 10.5 mi, and 6.2 mi, respectively from Calgary. Travelers can book a car rental at Calgary for about $41 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Seattle to Barcelona flights?

    Flights departing from Seattle and landing in Barcelona layover in Dublin least frequently. Dublin is followed by Chicago in terms of the least popular layover location on flights from Seattle to Barcelona. Amsterdam sees the third fewest flights with layovers for the Seattle to Barcelona route.

  • 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 $523). Flying from Seattle to Barcelona in June is currently the most expensive (average of $1,096). 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
Portland to Barcelona-El Prat flights
Spokane to Barcelona-El Prat flights

Top 10 airlines flying from Seattle to Barcelona

Discover the top 10 airlines 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 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$416Average$628FlexibilityNo cancel feeOn-time76%
WestJetCheapest$445Average$901FlexibilityNo cancel feeOn-time60%
Aer LingusCheapest$501Average$828FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$525Average$811FlexibilityNo cancel feeOn-time77%
KLMCheapest$527Average$909FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$560Average$652FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$563Average$882FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$569Average$891FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$581Average$990FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$622Average$951FlexibilityNo cancel feeOn-time69%
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