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Cheap flights from Seattle to Barcelona from $270

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Barcelona departing on 2/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 pm - 1:15 pm
SEA
-
BCN
13h 40m1 stop
Icelandair Logo
11:50 am - 5:00 pm
BCN
-
SEA
14h 10m1 stop
$411Icelandair
Sun, Feb 15 - Tue, Feb 24
Icelandair Logo
2:35 pm - 1:35 pm
SEA
-
BCN
14h 00m1 stop
Icelandair Logo
11:50 am - 5:00 pm
BCN
-
SEA
14h 10m1 stop
$412Icelandair
Fri, Jan 30 - Tue, Feb 3
Icelandair Logo
2:35 pm - 1:35 pm
SEA
-
BCN
14h 00m1 stop
Icelandair Logo
11:50 am - 5:00 pm
BCN
-
SEA
14h 10m1 stop
$423Icelandair
Fri, Jan 9 - Fri, Jan 16
Lufthansa Logo
3:10 pm - 5:35 pm
SEA
-
BCN
17h 25m1 stop
Lufthansa Logo
6:50 am - 12:10 pm
BCN
-
SEA
14h 20m1 stop
$443Lufthansa
Fri, Jan 23 - Sat, Jan 31
Multiple Airlines Logo
3:10 pm - 5:35 pm
SEA
-
BCN
17h 25m1 stop
Multiple Airlines Logo
9:55 am - 9:12 pm
BCN
-
SEA
20h 17m2 stops
$448Multiple Airlines
Fri, Jan 9 - Fri, Jan 16
Multiple Airlines Logo
3:10 pm - 5:35 pm
SEA
-
BCN
17h 25m1 stop
Multiple Airlines Logo
9:55 am - 9:12 pm
BCN
-
SEA
20h 17m2 stops
$449Multiple Airlines
Fri, Jan 23 - Fri, Jan 30
Multiple Airlines Logo
3:10 pm - 5:35 pm
SEA
-
BCN
17h 25m1 stop
Multiple Airlines Logo
9:55 am - 9:12 pm
BCN
-
SEA
20h 17m2 stops
$453Multiple Airlines
Fri, Jan 23 - Sat, Jan 31
Icelandair Logo
2:35 pm - 1:15 pm
SEA
-
BCN
13h 40m1 stop
Icelandair Logo
11:50 am - 5:00 pm
BCN
-
SEA
14h 10m1 stop
$455Icelandair
Sun, Jan 11 - Fri, Jan 16
Multiple Airlines Logo
5:50 am - 9:35 am
SEA
-
BCN
18h 45m2 stops
Multiple Airlines Logo
7:40 am - 1:20 pm
BCN
-
SEA
14h 40m1 stop
$456Multiple Airlines
Mon, Jan 12 - Sun, Jan 25
Multiple Airlines Logo
5:50 am - 9:35 am
SEA
-
BCN
42h 45m2 stops
Multiple Airlines Logo
7:40 am - 1:20 pm
BCN
-
SEA
14h 40m1 stop
$457Multiple Airlines
Sun, Jan 18 - Sun, Feb 1

British Airways flights from Seattle to Barcelona-El Prat Airport

Our best British Airways deals on Seattle to Barcelona-El Prat Airport flight tickets
British Airways
Jan 13
SEA8:04 amSeattle/Tacoma Intl
20h 36m
2 stops
BCN1:40 pmBarcelona-El Prat
Jan 23
BCN12:30 pmBarcelona-El Prat
18h 37m
1 stop
SEA10:07 pmSeattle/Tacoma Intl
$472
Find similar
British Airways
Jan 13
SEA6:50 pmSeattle/Tacoma Intl
14h 35m
1 stop
BCN6:25 pmBarcelona-El Prat
Jan 23
BCN12:30 pmBarcelona-El Prat
18h 37m
1 stop
SEA10:07 pmSeattle/Tacoma Intl
$475
Find similar
British Airways
Jan 25
SEA2:04 pmSeattle/Tacoma Intl
17h 01m
2 stops
BCN4:05 pmBarcelona-El Prat
Jan 31
BCN8:40 pmBarcelona-El Prat
34h 40m
2 stops
SEA10:20 pmSeattle/Tacoma Intl
$481
Find similar

Icelandair flights from Seattle to Barcelona-El Prat Airport

Our best Icelandair deals on Seattle to Barcelona-El Prat Airport flight tickets
Icelandair
Feb 15
SEA2:35 pmSeattle/Tacoma Intl
13h 40m
1 stop
BCN1:15 pmBarcelona-El Prat
Feb 24
BCN11:50 amBarcelona-El Prat
14h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$411
Find similar
Icelandair
Jan 30
SEA2:35 pmSeattle/Tacoma Intl
14h 00m
1 stop
BCN1:35 pmBarcelona-El Prat
Feb 3
BCN11:50 amBarcelona-El Prat
14h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$412
Find similar
Icelandair
Jan 9
SEA2:35 pmSeattle/Tacoma Intl
14h 00m
1 stop
BCN1:35 pmBarcelona-El Prat
Jan 16
BCN11:50 amBarcelona-El Prat
14h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$423
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Barcelona-El Prat Airport 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 December 11, 2025.
Use the filters below to find and compare flights from Seattle to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 2/15

2:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

Tue 2/24

11:50 am-5:00 pm

1 stop14h 10m

$411

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/30

2:35 pm-1:35 pm

1 stop14h 00m

Barcelona-El Prat

Tue 2/3

11:50 am-5:00 pm

1 stop14h 10m

$412

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/9

2:35 pm-1:35 pm

1 stop14h 00m

Barcelona-El Prat

Fri 1/16

11:50 am-5:00 pm

1 stop14h 10m

$423

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/23

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Sat 1/31

6:50 am-12:10 pm

1 stop14h 20m

$443

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/9

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Fri 1/16

9:55 am-9:12 pm

2 stops20h 17m

$448

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/23

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Fri 1/30

9:55 am-9:12 pm

2 stops20h 17m

$449

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/23

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Sat 1/31

9:55 am-9:12 pm

2 stops20h 17m

$453

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 1/11

2:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

Fri 1/16

11:50 am-5:00 pm

1 stop14h 10m

$455

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 1/12

5:50 am-9:35 am

2 stops18h 45m

Barcelona-El Prat

Sun 1/25

7:40 am-1:20 pm

1 stop14h 40m

$456

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 1/18

5:50 am-9:35 am

2 stops42h 45m

Barcelona-El Prat

Sun 2/1

7:40 am-1:20 pm

1 stop14h 40m

$457

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 Barcelona from

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

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 Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from Seattle is in February. Flight prices, which tend to average around $649, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Barcelona-El Prat Airport from Seattle during October instead. Flights to Barcelona-El Prat Airport in October, while not as cheap as those in February, still average around $672.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Sunday when prices can be found for as low as $876. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $2,579. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $888 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $2,198 on average. Flights to Barcelona-El Prat Airport from Seattle in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to Barcelona-El Prat Airport?

You are more likely to see cheaper flights to Barcelona-El Prat Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $842 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from Seattle for as low as $716 on momondo.

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

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

Can stopping save me money on Seattle to Barcelona-El Prat Airport flights?

You could potentially save up to 4% on your flight if you consider stops on a Seattle to Barcelona-El Prat Airport flight.

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

As of December 2025, prices for Seattle to Barcelona-El Prat Airport flights are approximately 17% more expensive when compared to flights at the same time last year.

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

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

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

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

Fastest flight time

10h 30m

Direct flights

Wed, Fri and Sun
The fastest flight from Seattle to Barcelona-El Prat Airport takes 10h 30m
Direct flights go from Seattle to Barcelona-El Prat Airport on Wednesday, Friday and Sunday. There are no airlines offering direct flights.
Search flight deals

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

    There are 5412.9 mi between Seattle/Tacoma Intl and Barcelona-El Prat. 10h 30m is a normal flight duration for this route.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Barcelona-El Prat Airport are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The travel and health documents required for your trip to Barcelona-El Prat Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Barcelona-El Prat Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from Seattle to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from Seattle to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $368Free CancellationRating
7.0
589 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $461Free CancellationRating
7.4
1,605 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $478Free CancellationRating
7.1
10,517 reviews
Search Air Canada flights
United AirlinesPriceFrom $484Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
Aer LingusPriceFrom $498Free CancellationRating
7.2
1,394 reviews
Search Aer Lingus flights
LufthansaPriceFrom $551Free CancellationRating
6.8
7,626 reviews
Search Lufthansa flights
British AirwaysPriceFrom $553Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
IberiaPriceFrom $572Free CancellationRating
7.0
3,045 reviews
Search Iberia flights
KLMPriceFrom $574Free CancellationRating
7.7
1,432 reviews
Search KLM flights
American AirlinesPriceFrom $590Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
Tossa de Mar
El Prat de Llobregat
Castelldefels
L'Hospitalet de Llobregat
Tarragona
Santa Susanna
Cambrils
Cadaques
Empuriabrava
Calella
Pineda de Mar
Roses
Badalona
Pals
Palafrugell
Tortosa
La Pineda

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Barcelona. momondo saves you time and could save you money on your trip.

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

Flights from Seattle to Barcelona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Barcelona from Seattle.

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

Yes momondo offers price alerts on flights to Barcelona from Seattle. 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.

An easier way to manage your Barcelona-El Prat Airport trip

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