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Cheap flights from Barcelona-El Prat Airport to Seattle from $304

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Barcelona-El Prat Airport to Seattle departing on 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Barcelona-El Prat Airport to Seattle

Cheap round-trip flights

Logo
6:10 pm - 10:35 amBCN-SEA
25h 25m1 stop
Logo
7:00 am - 1:20 pmSEA-BCN
21h 20m1 stop
$567
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jue., nov. 6 - dom., nov. 16
Logo
6:10 pm - 10:35 amBCN-SEA
25h 25m1 stop
Logo
3:10 pm - 8:00 pmSEA-BCN
19h 50m2 stops
$596
Find Deal
jue., nov. 6 - vie., nov. 21
Icelandair Logo
11:50 am - 5:00 pmBCN-SEA
14h 10m1 stop
Icelandair Logo
2:35 pm - 1:20 pmSEA-BCN
13h 45m1 stop
$609Icelandair
Find Deal
mar., nov. 11 - dom., nov. 23
Icelandair Logo
11:50 am - 5:00 pmBCN-SEA
14h 10m1 stop
Icelandair Logo
2:35 pm - 1:20 pmSEA-BCN
13h 45m1 stop
$648Icelandair
Find Deal
mar., feb. 24 - vie., mar. 6
Aer Lingus Logo
11:00 am - 5:50 pmBCN-SEA
15h 50m1 stop
Aer Lingus Logo
8:05 pm - 8:25 pmSEA-BCN
15h 20m1 stop
$661Aer Lingus
Find Deal
jue., oct. 23 - mié., nov. 5
Finnair Logo
10:40 am - 7:03 pmBCN-SEA
17h 23m1 stop
Finnair Logo
7:44 am - 8:50 amSEA-BCN
16h 06m1 stop
$662Finnair
Find Deal
sáb., ene. 31 - mar., feb. 10
Finnair Logo
10:40 am - 7:03 pmBCN-SEA
17h 23m1 stop
Finnair Logo
7:44 am - 8:50 amSEA-BCN
16h 06m1 stop
$663Finnair
Find Deal
sáb., ene. 31 - mar., feb. 10
Aer Lingus Logo
11:00 am - 5:50 pmBCN-SEA
15h 50m1 stop
Aer Lingus Logo
9:05 pm - 8:25 pmSEA-BCN
15h 20m1 stop
$670Aer Lingus
Find Deal
jue., oct. 16 - mié., oct. 29
American Airlines Logo
10:40 am - 11:11 pmBCN-SEA
21h 31m1 stop
American Airlines Logo
12:27 am - 8:50 amSEA-BCN
23h 23m1 stop
$672American Airlines
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vie., ene. 30 - dom., feb. 8
American Airlines Logo
2:00 pm - 10:16 pmBCN-SEA
17h 16m1 stop
American Airlines Logo
11:15 pm - 9:00 amSEA-BCN
24h 45m1 stop
$703American Airlines
Find Deal
jue., oct. 23 - mié., nov. 5

Finnair flights from Barcelona-El Prat Airport to Seattle

Our best Finnair deals on Barcelona-El Prat Airport to Seattle flight tickets
Finnair
Jan 31
BCN10:40 amBarcelona-El Prat
17h 23m
1 stop
SEA7:03 pmSeattle/Tacoma Intl
Feb 10
SEA7:44 amSeattle/Tacoma Intl
16h 06m
1 stop
BCN8:50 amBarcelona-El Prat
$662
Find similar
Finnair
Jan 31
BCN10:40 amBarcelona-El Prat
17h 23m
1 stop
SEA7:03 pmSeattle/Tacoma Intl
Feb 10
SEA7:44 amSeattle/Tacoma Intl
16h 06m
1 stop
BCN8:50 amBarcelona-El Prat
$663
Find similar

Aer Lingus flights from Barcelona-El Prat Airport to Seattle

Our best Aer Lingus deals on Barcelona-El Prat Airport to Seattle flight tickets
Aer Lingus
Oct 23
BCN11:00 amBarcelona-El Prat
15h 50m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
Nov 5
SEA8:05 pmSeattle/Tacoma Intl
15h 20m
1 stop
BCN8:25 pmBarcelona-El Prat
$661
Find similar
Aer Lingus
Oct 16
BCN11:00 amBarcelona-El Prat
15h 50m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
Oct 29
SEA9:05 pmSeattle/Tacoma Intl
15h 20m
1 stop
BCN8:25 pmBarcelona-El Prat
$670
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Barcelona-El Prat Airport to Seattle 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, momondo users made 832,500 searches. Data last updated septiembre 15, 2025.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jue. 11/6

6:10 pm-10:35 am

1 stop25h 25m

Seattle/Tacoma Intl

dom. 11/16

7:00 am-1:20 pm

1 stop21h 20m

$567

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jue. 11/6

6:10 pm-10:35 am

1 stop25h 25m

Seattle/Tacoma Intl

vie. 11/21

3:10 pm-8:00 pm

2 stops19h 50m

$596

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

mar. 11/11

11:50 am-5:00 pm

1 stop14h 10m

Seattle/Tacoma Intl

dom. 11/23

2:35 pm-1:20 pm

1 stop13h 45m

$609

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

mar. 2/24

11:50 am-5:00 pm

1 stop14h 10m

Seattle/Tacoma Intl

vie. 3/6

2:35 pm-1:20 pm

1 stop13h 45m

$648

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jue. 10/23

11:00 am-5:50 pm

1 stop15h 50m

Seattle/Tacoma Intl

mié. 11/5

8:05 pm-8:25 pm

1 stop15h 20m

$661

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

sáb. 1/31

10:40 am-7:03 pm

1 stop17h 23m

Seattle/Tacoma Intl

mar. 2/10

7:44 am-8:50 am

1 stop16h 06m

$662

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

sáb. 1/31

10:40 am-7:03 pm

1 stop17h 23m

Seattle/Tacoma Intl

mar. 2/10

7:44 am-8:50 am

1 stop16h 06m

$663

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jue. 10/16

11:00 am-5:50 pm

1 stop15h 50m

Seattle/Tacoma Intl

mié. 10/29

9:05 pm-8:25 pm

1 stop15h 20m

$670

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

vie. 1/30

10:40 am-11:11 pm

1 stop21h 31m

Seattle/Tacoma Intl

dom. 2/8

12:27 am-8:50 am

1 stop23h 23m

$672

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

jue. 10/23

2:00 pm-10:16 pm

1 stop17h 16m

Seattle/Tacoma Intl

mié. 11/5

11:15 pm-9:00 am

1 stop24h 45m

$703

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Barcelona-El Prat Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, March is the cheapest month to fly from Barcelona-El Prat Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $708. If you don’t want to visit Seattle in March, then you should wait until May to fly from Barcelona-El Prat Airport, when ticket prices are also cheap, with an average price of $750.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Barcelona-El Prat Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $784. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Barcelona-El Prat Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,377.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Barcelona-El Prat Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $877 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $1,226. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Barcelona-El Prat to Seattle/Tacoma Intl flight route?

Fly from Barcelona-El Prat to Seattle/Tacoma Intl for the best Barcelona-El Prat - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Barcelona-El Prat Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $872 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Barcelona-El Prat Airport for as low as $697 on momondo.

What cabin class options are available on Barcelona-El Prat to Seattle/Tacoma Intl flights?

There is only 1 cabin class available to choose from on Barcelona-El Prat to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Barcelona-El Prat Airport to Seattle flight prices changed over time?

As of September 2025, prices for Barcelona-El Prat Airport to Seattle flights are approximately 6% cheaper when compared to flights at the same time last year.

When to book flights from Barcelona-El Prat Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Barcelona-El Prat Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Barcelona-El Prat Airport to Seattle (BCN to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Barcelona-El Prat Airport to Seattle

Direct flights

None
There are no direct flights from Barcelona-El Prat Airport to Seattle. There are no popular flight routes from Barcelona-El Prat Airport to Seattle.
Search flight deals

  • How far is Barcelona-El Prat to Seattle/Tacoma Intl by plane?

    A flight from Barcelona-El Prat to Seattle/Tacoma Intl will travel around 5412.9 mi. By plane, this route typically takes 14h 10m.

  • When did momondo last update prices for flights from Barcelona-El Prat Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Barcelona-El Prat Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Barcelona-El Prat Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Barcelona-El Prat Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Barcelona-El Prat Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Barcelona-El Prat Airport to Seattle?

  • What is the most popular airline from Barcelona-El Prat Airport to Seattle?

Best airlines flying from Barcelona-El Prat Airport to Seattle

Compare and see reviews for airlines that fly from Barcelona-El Prat Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $286Free CancellationRating
7.9
7,954 reviews
Search Delta flights
KLMPriceFrom $677Free CancellationRating
7.8
1,385 reviews
Search KLM flights
LufthansaPriceFrom $684Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
British AirwaysPriceFrom $768Free CancellationRating
6.6
7,361 reviews
Search British Airways flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Kirkland
Tukwila
Shoreline
Lakewood
Centralia
Fife
Cle Elum
Redmond
Westport

Why use momondo?

Why should I use momondo to find a flight deal from Barcelona to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Barcelona to Seattle. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Barcelona to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Barcelona on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Barcelona to Seattle?

Once you have performed a search for Barcelona to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Barcelona to Seattle right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Seattle from Barcelona. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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