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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 2/24. 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
3:40 pm - 2:45 pm
SEA
-
BCN
14h 05m
1 stop
Icelandair Logo
3:45 pm - 8:40 pm
BCN
-
SEA
13h 55m
1 stop
$387Icelandair
Thu, Apr 23 - Mon, Apr 27
Icelandair Logo
7:00 pm - 2:45 pm
SEA
-
BCN
34h 45m
1 stop
Icelandair Logo
3:45 pm - 8:40 pm
BCN
-
SEA
13h 55m
1 stop
$388Icelandair
Thu, Apr 23 - Mon, Apr 27
Icelandair Logo
3:40 pm - 2:45 pm
SEA
-
BCN
14h 05m
1 stop
Icelandair Logo
3:45 pm - 8:40 pm
BCN
-
SEA
13h 55m
1 stop
$394Icelandair
Fri, Apr 24 - Wed, May 6
Icelandair Logo
3:40 pm - 2:45 pm
SEA
-
BCN
14h 05m
1 stop
Icelandair Logo
3:45 pm - 8:40 pm
BCN
-
SEA
13h 55m
1 stop
$396Icelandair
Thu, Apr 23 - Sat, May 2
Icelandair Logo
3:40 pm - 2:45 pm
SEA
-
BCN
14h 05m
1 stop
Icelandair Logo
3:45 pm - 8:40 pm
BCN
-
SEA
13h 55m
1 stop
$398Icelandair
Sat, Apr 25 - Wed, May 6
Icelandair Logo
3:40 pm - 2:45 pm
SEA
-
BCN
14h 05m
1 stop
Icelandair Logo
3:45 pm - 8:40 pm
BCN
-
SEA
13h 55m
1 stop
$402Icelandair
Sun, May 3 - Sat, May 9
Icelandair Logo
7:00 pm - 2:45 pm
SEA
-
BCN
34h 45m
1 stop
Icelandair Logo
3:45 pm - 5:55 pm
BCN
-
SEA
35h 10m
1 stop
$404Icelandair
Fri, May 1 - Mon, May 11
Icelandair Logo
2:35 pm - 1:15 pm
SEA
-
BCN
13h 40m
1 stop
Icelandair Logo
11:50 am - 6:00 pm
BCN
-
SEA
14h 10m
1 stop
$407Icelandair
Sun, Feb 22 - Tue, Mar 10
Icelandair Logo
2:35 pm - 1:35 pm
SEA
-
BCN
14h 00m
1 stop
Icelandair Logo
11:50 am - 5:00 pm
BCN
-
SEA
14h 10m
1 stop
$413Icelandair
Wed, Feb 25 - Tue, Mar 3
Lufthansa Logo
3:40 pm - 9:35 am
SEA
-
BCN
32h 55m
2 stops
Lufthansa Logo
6:50 am - 1:10 pm
BCN
-
SEA
14h 20m
1 stop
$419Lufthansa
Sun, Feb 22 - Tue, Mar 10

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
Feb 20
SEA7:15 amSeattle/Tacoma Intl
19h 20m
2 stops
BCN11:35 amBarcelona-El Prat
Feb 28
BCN12:30 pmBarcelona-El Prat
18h 27m
1 stop
SEA9:57 pmSeattle/Tacoma Intl
$472
British Airways
Mar 7
SEA6:50 pmSeattle/Tacoma Intl
16h 25m
1 stop
BCN8:15 pmBarcelona-El Prat
Mar 13
BCN7:15 pmBarcelona-El Prat
25h 15m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
$475
British Airways
Mar 2
SEA6:50 pmSeattle/Tacoma Intl
30h 35m
1 stop
BCN10:25 amBarcelona-El Prat
Mar 18
BCN3:35 pmBarcelona-El Prat
34h 20m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$485

United Airlines flights from Seattle to Barcelona-El Prat Airport

Our best United Airlines deals on Seattle to Barcelona-El Prat Airport flight tickets
United Airlines
Apr 15
SEA7:00 amSeattle/Tacoma Intl
21h 15m
1 stop
BCN1:15 pmBarcelona-El Prat
Apr 23
BCN12:15 pmBarcelona-El Prat
37h 22m
2 stops
SEA4:37 pmSeattle/Tacoma Intl
$465
United Airlines
Apr 8
SEA6:50 pmSeattle/Tacoma Intl
14h 05m
1 stop
BCN5:55 pmBarcelona-El Prat
Apr 14
BCN12:15 pmBarcelona-El Prat
32h 33m
2 stops
SEA11:48 amSeattle/Tacoma Intl
$468
United Airlines
Apr 8
SEA5:00 amSeattle/Tacoma Intl
18h 00m
2 stops
BCN8:00 amBarcelona-El Prat
Apr 16
BCN1:15 pmBarcelona-El Prat
36h 22m
2 stops
SEA4:37 pmSeattle/Tacoma Intl
$473

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 January 24, 2026.
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

Thu 4/23

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

Mon 4/27

3:45 pm-8:40 pm

1 stop13h 55m

$387

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 4/23

7:00 pm-2:45 pm

1 stop34h 45m

Barcelona-El Prat

Mon 4/27

3:45 pm-8:40 pm

1 stop13h 55m

$388

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 4/24

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

Wed 5/6

3:45 pm-8:40 pm

1 stop13h 55m

$394

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 4/23

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

Sat 5/2

3:45 pm-8:40 pm

1 stop13h 55m

$396

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 4/25

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

Wed 5/6

3:45 pm-8:40 pm

1 stop13h 55m

$398

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 5/3

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

Sat 5/9

3:45 pm-8:40 pm

1 stop13h 55m

$402

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 5/1

7:00 pm-2:45 pm

1 stop34h 45m

Barcelona-El Prat

Mon 5/11

3:45 pm-5:55 pm

1 stop35h 10m

$404

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 2/22

2:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

Tue 3/10

11:50 am-6:00 pm

1 stop14h 10m

$407

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 2/25

2:35 pm-1:35 pm

1 stop14h 00m

Barcelona-El Prat

Tue 3/3

11:50 am-5:00 pm

1 stop14h 10m

$413

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 2/22

3:40 pm-9:35 am

2 stops32h 55m

Barcelona-El Prat

Tue 3/10

6:50 am-1:10 pm

1 stop14h 20m

$419

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 January. Flight prices, which tend to average around $535, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Barcelona-El Prat Airport from Seattle during February instead. Flights to Barcelona-El Prat Airport in February, while not as cheap as those in January, still average around $579.

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 Tuesday when prices can be found for as low as $1,258. 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 Saturday because tickets tend to average around $1,759. 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 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 $796 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 $707 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 20% 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 January 2026, prices for Seattle to Barcelona-El Prat Airport flights are approximately 18% cheaper 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

$883

Fastest flight time

10h 30m

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 $883
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. The only airline offering direct flights is Delta.
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 $367Free CancellationRating
7.1
603 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $461Free CancellationRating
7.3
1,662 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom $476Free CancellationRating
7.2
1,442 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $478Free CancellationRating
7.1
10,655 reviews
Search Air Canada flights
United AirlinesPriceFrom $482Free CancellationRating
7.4
9,198 reviews
Search United Airlines flights
DeltaPriceFrom $486Free CancellationRating
7.9
8,111 reviews
Search Delta flights
American AirlinesPriceFrom $502Free CancellationRating
7.2
11,197 reviews
Search American Airlines flights
British AirwaysPriceFrom $504Free CancellationRating
6.7
7,699 reviews
Search British Airways flights
LufthansaPriceFrom $514Free CancellationRating
6.8
7,748 reviews
Search Lufthansa flights
IberiaPriceFrom $572Free CancellationRating
7.0
3,098 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
Tarragona
Castelldefels
L'Hospitalet de Llobregat
Santa Susanna
Calella
Cadaques
Cambrils
Empuriabrava
Pals
Roses
Badalona
Pineda de Mar
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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