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Cheap flights from Seattle to Barcelona from $280

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 8/3. 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.
Condor Logo
6:05 pm - 10:10 pm
SEA
-
BCN
19h 05m
1 stop
Condor Logo
8:00 am - 4:00 pm
BCN
-
SEA
17h 00m
1 stop
$712Condor
Tue, Sep 1 - Fri, Sep 11
Condor Logo
6:05 pm - 10:10 pm
SEA
-
BCN
19h 05m
1 stop
Condor Logo
10:15 am - 4:00 pm
BCN
-
SEA
14h 45m
1 stop
$718Condor
Tue, Sep 1 - Fri, Sep 11
Condor Logo
6:10 pm - 10:10 pm
SEA
-
BCN
19h 00m
1 stop
Condor Logo
8:00 am - 4:00 pm
BCN
-
SEA
17h 00m
1 stop
$719Condor
Mon, Jun 1 - Fri, Jun 19
Condor Logo
5:40 pm - 10:10 pm
SEA
-
BCN
19h 30m
1 stop
Condor Logo
10:15 am - 4:00 pm
BCN
-
SEA
14h 45m
1 stop
$720Condor
Wed, May 27 - Thu, Jun 4
Multiple Airlines Logo
8:00 am - 1:50 am
SEA
-
BCN
32h 50m
3 stops
Multiple Airlines Logo
7:50 am - 9:07 pm
BCN
-
SEA
22h 17m
2 stops
$723Multiple Airlines
Wed, Aug 12 - Tue, Aug 25
Condor Logo
5:40 pm - 4:00 pm
SEA
-
BCN
13h 20m
1 stop
Condor Logo
10:25 am - 3:40 pm
BCN
-
SEA
14h 15m
1 stop
$725Condor
Sun, Sep 13 - Wed, Sep 23
Condor Logo
5:40 pm - 4:05 pm
SEA
-
BCN
13h 25m
1 stop
Condor Logo
5:00 pm - 3:40 pm
BCN
-
SEA
31h 40m
1 stop
$729Condor
Wed, Sep 23 - Mon, Oct 12
Multiple Airlines Logo
6:10 pm - 10:10 pm
SEA
-
BCN
19h 00m
1 stop
Multiple Airlines Logo
8:00 am - 7:48 pm
BCN
-
SEA
20h 48m
2 stops
$730Multiple Airlines
Mon, May 25 - Thu, May 28
Scandinavian Airlines Logo
3:55 pm - 6:10 pm
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
7:00 pm - 12:22 am
BCN
-
SEA
38h 22m
2 stops
$732Scandinavian Airlines
Sun, Sep 6 - Wed, Sep 16
Condor Logo
5:40 pm - 4:00 pm
SEA
-
BCN
13h 20m
1 stop
Condor Logo
10:15 am - 4:10 pm
BCN
-
SEA
14h 55m
1 stop
$734Condor
Sun, Sep 6 - Mon, Sep 14

Scandinavian Airlines flights from Seattle to Barcelona-El Prat Airport

Our best Scandinavian Airlines deals on Seattle to Barcelona-El Prat Airport flight tickets
Scandinavian Airlines
Sep 6
SEA3:55 pmSeattle/Tacoma Intl
17h 15m
1 stop
BCN6:10 pmBarcelona-El Prat
Sep 16
BCN7:00 pmBarcelona-El Prat
38h 22m
2 stops
SEA12:22 amSeattle/Tacoma Intl
$732
Scandinavian Airlines
Sep 15
SEA5:45 pmSeattle/Tacoma Intl
39h 25m
2 stops
BCN6:10 pmBarcelona-El Prat
Sep 24
BCN12:25 pmBarcelona-El Prat
34h 20m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$737
Scandinavian Airlines
Sep 5
SEA3:55 pmSeattle/Tacoma Intl
32h 50m
1 stop
BCN9:45 amBarcelona-El Prat
Sep 19
BCN7:00 pmBarcelona-El Prat
27h 45m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$742

Condor flights from Seattle to Barcelona-El Prat Airport

Our best Condor deals on Seattle to Barcelona-El Prat Airport flight tickets
Condor
Sep 1
SEA6:05 pmSeattle/Tacoma Intl
19h 05m
1 stop
BCN10:10 pmBarcelona-El Prat
Sep 11
BCN8:00 amBarcelona-El Prat
17h 00m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
$712
Condor
Sep 1
SEA6:05 pmSeattle/Tacoma Intl
19h 05m
1 stop
BCN10:10 pmBarcelona-El Prat
Sep 11
BCN10:15 amBarcelona-El Prat
14h 45m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
$718
Condor
Jun 1
SEA6:10 pmSeattle/Tacoma Intl
19h 00m
1 stop
BCN10:10 pmBarcelona-El Prat
Jun 19
BCN8:00 amBarcelona-El Prat
17h 00m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
$719

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 May 15, 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

Cheapest round-trip

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 9/1

6:05 pm-10:10 pm

1 stop19h 05m

Barcelona-El Prat

Fri 9/11

8:00 am-4:00 pm

1 stop17h 00m

$712

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 9/1

6:05 pm-10:10 pm

1 stop19h 05m

Barcelona-El Prat

Fri 9/11

10:15 am-4:00 pm

1 stop14h 45m

$718

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 6/1

6:10 pm-10:10 pm

1 stop19h 00m

Barcelona-El Prat

Fri 6/19

8:00 am-4:00 pm

1 stop17h 00m

$719

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 5/27

5:40 pm-10:10 pm

1 stop19h 30m

Barcelona-El Prat

Thu 6/4

10:15 am-4:00 pm

1 stop14h 45m

$720

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 8/12

8:00 am-1:50 am

3 stops32h 50m

Barcelona-El Prat

Tue 8/25

7:50 am-9:07 pm

2 stops22h 17m

$723
Quickest round-trip

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 9/13

5:40 pm-4:00 pm

1 stop13h 20m

Barcelona-El Prat

Wed 9/23

10:25 am-3:40 pm

1 stop14h 15m

$725

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 9/23

5:40 pm-4:05 pm

1 stop13h 25m

Barcelona-El Prat

Mon 10/12

5:00 pm-3:40 pm

1 stop31h 40m

$729

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 5/25

6:10 pm-10:10 pm

1 stop19h 00m

Barcelona-El Prat

Thu 5/28

8:00 am-7:48 pm

2 stops20h 48m

$730

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 9/6

3:55 pm-6:10 pm

1 stop17h 15m

Barcelona-El Prat

Wed 9/16

7:00 pm-12:22 am

2 stops38h 22m

$732

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 9/6

5:40 pm-4:00 pm

1 stop13h 20m

Barcelona-El Prat

Mon 9/14

10:15 am-4:10 pm

1 stop14h 55m

$734

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 typical price of a round-trip flight between Seattle and Barcelona-El Prat Airport?

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 $480, 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 $486.

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 Friday when prices can be found for as low as $920. 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 Thursday because tickets tend to average around $1,318. 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 from Seattle 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 $759 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 $660 on momondo.

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 May 2026, prices for Seattle to Barcelona-El Prat Airport flights are approximately 20% 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

$708

Fastest flight time

10h 35m

Direct flights

Wed, Fri and Sun
The best one-way flight to Barcelona-El Prat Airport from Seattle in the past 72 hours is $708. The best round-trip flight deal from Seattle to Barcelona-El Prat Airport found on momondo in the last 72 hours is $1,023.
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. The only airline offering direct flights is Delta.
Search flight deals

Frequently asked questions about flying from Seattle to Barcelona-El Prat Airport

  • 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 $367Free CancellationRating
7.0
654 reviews
Search Icelandair flights
Aer LingusPriceFrom $436Free CancellationRating
7.3
1,562 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $478Free CancellationRating
7.1
11,042 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $478Free CancellationRating
7.4
1,777 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom $480Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights
LufthansaPriceFrom $481Free CancellationRating
6.8
8,003 reviews
Search Lufthansa flights
United AirlinesPriceFrom $481Free CancellationRating
7.4
9,723 reviews
Search United Airlines flights
British AirwaysPriceFrom $483Free CancellationRating
6.7
7,980 reviews
Search British Airways flights
DeltaPriceFrom $486Free CancellationRating
7.9
8,453 reviews
Search Delta flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,217 reviews
Search Iberia flights

  • Delta Flights From Seattle to Barcelona-El Prat Airport

    The lowest priced Delta flight from Seattle to Barcelona-El Prat Airport from the last 72 hours was $486. Generally, Delta has 3 flights on this route every week with an average price of $1,140. Delta is rated 7.9/10 by our users.

  • KLM Flights From Seattle to Barcelona-El Prat Airport

    Another popular option for Seattle to Barcelona-El Prat Airport flights is KLM (7.8/10, 1,517 ratings). KLM flies from Seattle to Barcelona-El Prat Airport around 3 times per week, with deals starting from $595 round-trip and rising to an average price of around $1,113.

Traveling to a place near Barcelona?

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

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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