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Cheap flights from Seattle to Barcelona from $265

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 2/6. 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 Seattle to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$386Icelandair
Fri, Jan 23 - Fri, Jan 30
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
$413Icelandair
Wed, Feb 18 - Fri, Feb 27
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
$424Icelandair
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
$435Icelandair
Fri, Feb 6 - Fri, Feb 20
Air Canada Logo
8:00 pm - 9:35 am
SEA
-
BCN
28h 35m2 stops
Air Canada Logo
1:35 pm - 10:06 pm
BCN
-
SEA
41h 31m2 stops
$436Air Canada
Thu, Jan 22 - Thu, Jan 29
Lufthansa Logo
3:10 pm - 2:45 pm
SEA
-
BCN
14h 35m1 stop
Lufthansa Logo
10:30 am - 8:56 pm
BCN
-
SEA
19h 26m1 stop
$438Lufthansa
Wed, Feb 18 - Wed, Feb 25
Multiple Airlines Logo
3:10 pm - 2:45 pm
SEA
-
BCN
14h 35m1 stop
Multiple Airlines Logo
9:55 am - 9:01 pm
BCN
-
SEA
20h 06m2 stops
$440Multiple Airlines
Fri, Feb 20 - Fri, Feb 27
Lufthansa Logo
2:00 pm - 1:00 pm
SEA
-
BCN
14h 00m1 stop
Lufthansa Logo
5:50 am - 12:10 pm
BCN
-
SEA
15h 20m1 stop
$443Lufthansa
Mon, Feb 9 - Mon, Feb 16
Multiple Airlines Logo
3:10 pm - 5:35 pm
SEA
-
BCN
17h 25m1 stop
Multiple Airlines Logo
9:55 am - 9:01 pm
BCN
-
SEA
20h 06m2 stops
$446Multiple Airlines
Sun, Feb 15 - Tue, Feb 24
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 23 - Fri, Jan 30

Lufthansa flights from Seattle to Barcelona-El Prat Airport

Our best Lufthansa deals on Seattle to Barcelona-El Prat Airport flight tickets
Lufthansa
Feb 18
SEA3:10 pmSeattle/Tacoma Intl
14h 35m
1 stop
BCN2:45 pmBarcelona-El Prat
Feb 25
BCN10:30 amBarcelona-El Prat
19h 26m
1 stop
SEA8:56 pmSeattle/Tacoma Intl
$438
Find similar
Lufthansa
Feb 9
SEA2:00 pmSeattle/Tacoma Intl
14h 00m
1 stop
BCN1:00 pmBarcelona-El Prat
Feb 16
BCN5:50 amBarcelona-El Prat
15h 20m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$443
Find similar
Lufthansa
Jan 24
SEA2:00 pmSeattle/Tacoma Intl
18h 45m
1 stop
BCN5:45 pmBarcelona-El Prat
Jan 31
BCN6:50 amBarcelona-El Prat
14h 20m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$451
Find similar

Air Canada flights from Seattle to Barcelona-El Prat Airport

Our best Air Canada deals on Seattle to Barcelona-El Prat Airport flight tickets
Air Canada
Jan 22
SEA8:00 pmSeattle/Tacoma Intl
28h 35m
2 stops
BCN9:35 amBarcelona-El Prat
Jan 29
BCN1:35 pmBarcelona-El Prat
41h 31m
2 stops
SEA10:06 pmSeattle/Tacoma Intl
$436
Find similar
Air Canada
Feb 9
SEA3:40 pmSeattle/Tacoma Intl
56h 55m
2 stops
BCN9:35 amBarcelona-El Prat
Feb 16
BCN1:35 pmBarcelona-El Prat
33h 56m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$449
Find similar
Air Canada
Feb 14
SEA8:00 pmSeattle/Tacoma Intl
28h 35m
2 stops
BCN9:35 amBarcelona-El Prat
Feb 24
BCN1:35 pmBarcelona-El Prat
28h 40m
2 stops
SEA9:15 amSeattle/Tacoma Intl
$476
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 28, 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

Fri 1/23

2:35 pm-1:35 pm

1 stop14h 00m

Barcelona-El Prat

Fri 1/30

11:50 am-5:00 pm

1 stop14h 10m

$386

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 2/18

2:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

Fri 2/27

11:50 am-5:00 pm

1 stop14h 10m

$413

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

$424

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 2/6

2:35 pm-1:35 pm

1 stop14h 00m

Barcelona-El Prat

Fri 2/20

11:50 am-5:00 pm

1 stop14h 10m

$435

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 1/22

8:00 pm-9:35 am

2 stops28h 35m

Barcelona-El Prat

Thu 1/29

1:35 pm-10:06 pm

2 stops41h 31m

$436

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 2/18

3:10 pm-2:45 pm

1 stop14h 35m

Barcelona-El Prat

Wed 2/25

10:30 am-8:56 pm

1 stop19h 26m

$438

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 2/20

3:10 pm-2:45 pm

1 stop14h 35m

Barcelona-El Prat

Fri 2/27

9:55 am-9:01 pm

2 stops20h 06m

$440

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 2/9

2:00 pm-1:00 pm

1 stop14h 00m

Barcelona-El Prat

Mon 2/16

5:50 am-12:10 pm

1 stop15h 20m

$443

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 2/15

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Tue 2/24

9:55 am-9:01 pm

2 stops20h 06m

$446

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

$448

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 $614, 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 January instead. Flights to Barcelona-El Prat Airport in January, while not as cheap as those in February, still average around $645.

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 $2,198. 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 $1,924 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 $836 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 $715 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 23% 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

Best Price Found

$1,113

Fastest flight time

10h 35m

Direct flights

Wed, Fri and Sun
The best flight deal from Seattle to Barcelona-El Prat Airport found on momondo in the last 72 hours is $1,113
The fastest flight from Seattle to Barcelona-El Prat Airport takes 10h 35m
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 35m 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
592 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $461Free CancellationRating
7.4
1,630 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $478Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights
United AirlinesPriceFrom $483Free CancellationRating
7.4
9,113 reviews
Search United Airlines flights
DeltaPriceFrom $487Free CancellationRating
7.9
8,018 reviews
Search Delta flights
Aer LingusPriceFrom $498Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus flights
American AirlinesPriceFrom $502Free CancellationRating
7.2
11,072 reviews
Search American Airlines flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,616 reviews
Search British Airways flights
LufthansaPriceFrom $530Free CancellationRating
6.8
7,658 reviews
Search Lufthansa flights
IberiaPriceFrom $572Free CancellationRating
7.0
3,059 reviews
Search Iberia 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
Tarragona
L'Hospitalet de Llobregat
Santa Susanna
Cambrils
Cadaques
Calella
Empuriabrava
Pals
Pineda de Mar
Roses
Badalona
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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