$409 Cheap Flights from Seattle (SEA) to Barcelona (BCN)

View $409 flight on Thu, Jun 4, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Barcelona El Prat Airport (BCN)

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Cheap Flights from Seattle to Barcelona (SEA-BCN)

Prices were available within the past 7 days and start at $409 for one-way flights and $507 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Sun, Aug 30 - Mon, Sep 7
SEA
Seattle
BCN
Barcelona
$507 Roundtrip, just found
$507
Roundtrip
just found
Select Scandinavian Airlines flight, departing Sun, Aug 30 from Seattle to Barcelona, returning Mon, Sep 7, priced at $507 just found
Condor
Tue, May 5 - Fri, May 15
SEA
Seattle
BCN
Barcelona
$550 Roundtrip, found 2 days ago
$550
Roundtrip
found 2 days ago
Select Condor flight, departing Tue, May 5 from Seattle to Barcelona, returning Fri, May 15, priced at $550 found 2 days ago
Icelandair
Wed, Apr 22 - Wed, Apr 29
SEA
Seattle
BCN
Barcelona
$684 Roundtrip, just found
$684
Roundtrip
just found
Select Icelandair flight, departing Wed, Apr 22 from Seattle to Barcelona, returning Wed, Apr 29, priced at $684 just found
Delta
Mon, Apr 13 - Thu, Apr 30
SEA
Seattle
BCN
Barcelona
$700 Roundtrip, found 1 day ago
$700
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Apr 13 from Seattle to Barcelona, returning Thu, Apr 30, priced at $700 found 1 day ago
American Airlines
Wed, Apr 22 - Fri, May 1
SEA
Seattle
BCN
Barcelona
$702 Roundtrip, just found
$702
Roundtrip
just found
Select American Airlines flight, departing Wed, Apr 22 from Seattle to Barcelona, returning Fri, May 1, priced at $702 just found
Turkish Airlines
Thu, May 7 - Tue, May 19
SEA
Seattle
BCN
Barcelona
$708 Roundtrip, just found
$708
Roundtrip
just found
Select Turkish Airlines flight, departing Thu, May 7 from Seattle to Barcelona, returning Tue, May 19, priced at $708 just found
Iberia
Sun, Apr 19 - Tue, Apr 28
SEA
Seattle
BCN
Barcelona
$747 Roundtrip, found 9 hours ago
$747
Roundtrip
found 9 hours ago
Select Iberia flight, departing Sun, Apr 19 from Seattle to Barcelona, returning Tue, Apr 28, priced at $747 found 9 hours ago
British Airways
Wed, Apr 22 - Tue, Apr 28
SEA
Seattle
BCN
Barcelona
$748 Roundtrip, just found
$748
Roundtrip
just found
Select British Airways flight, departing Wed, Apr 22 from Seattle to Barcelona, returning Tue, Apr 28, priced at $748 just found
Aer Lingus
Wed, Apr 22 - Tue, Apr 28
SEA
Seattle
BCN
Barcelona
$749 Roundtrip, just found
$749
Roundtrip
just found
Select Aer Lingus flight, departing Wed, Apr 22 from Seattle to Barcelona, returning Tue, Apr 28, priced at $749 just found
United
Mon, Apr 20 - Wed, Apr 29
SEA
Seattle
BCN
Barcelona
$753 Roundtrip, just found
$753
Roundtrip
just found
Select United flight, departing Mon, Apr 20 from Seattle to Barcelona, returning Wed, Apr 29, priced at $753 just found

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Alternative airports near Barcelona

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Barcelona Intl. BCN. Cheapest and Closest option available. Average driving time to city center is 18 minutes. Flights from $1,496
BCN
Barcelona Intl.
CheapestClosest
Average driving time to city center18 min
Flights from $1,496

Find the cheapest month to fly from Seattle (SEA) to Barcelona (BCN)

November is typically the cheapest month to fly

From $389 - $1,289 per traveler.

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN) cost?
Lock in a cheap one-way flight from $409 or cheap return flight from $507 from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN)?
The cheapest month to fly from SEA to BCN is August, when demand is low. Off-peak season is generally when better flight deals are available between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN)?
To find the cheapest airline that'll fly you from SEA to BCN, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN)?
Direct flights from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to BCN?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary depending on a range of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN) route, aim to travel before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN) last-minute?
Holding off until just before your trip to book your flight from SEA to BCN generally means paying more. Although you may find some last-minute offers, they're not always guaranteed. Allow some flexibility in your schedule to maximize your chances of scoring a bargain.
Is it cheaper to book a SEA to BCN flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to BCN flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place will take the stress out of travel planning. Just secure your flights and select from our wide range of stays, then tailor your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Barcelona Intl. Airport (BCN)?
If you booked your SEA to BCN flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Barcelona Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Condor, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet
Roundtrip price
$506
Distance
5423 mi

Book with confidence

Seattle to Barcelona Flights

The cheapest times to fly from Seattle to Barcelona

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Barcelona are during the month of August. You can find some of the cheapest flights from Seattle to Barcelona with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Barcelona

Sunday is one of the best days to book for cheap flights from Seattle to Barcelona: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Barcelona

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Barcelona in 2026. You can also book with separate airlines for your outbound and return journeys, from $409 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Barcelona flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Barcelona airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Barcelona Flights

*Flight schedules are subject to change.

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