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Cheap flights from Seattle to Barcelona from $262

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 2/25. 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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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
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
$404Icelandair
dom., may. 3 - mié., may. 13
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
$406Icelandair
vie., may. 1 - sáb., may. 9
Icelandair Logo
2:35 pm - 1:35 pm
SEA
-
BCN
14h 00m
1 stop
Icelandair Logo
11:50 am - 6:00 pm
BCN
-
SEA
14h 10m
1 stop
$414Icelandair
mié., mar. 4 - mar., mar. 10
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
$415Icelandair
mié., abr. 22 - mié., abr. 29
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
$416Icelandair
mar., abr. 21 - mié., abr. 29
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
$417Icelandair
vie., abr. 24 - mié., abr. 29
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
$425Icelandair
dom., feb. 22 - mar., mar. 10
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
$426Icelandair
mié., abr. 22 - lun., abr. 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
$428Icelandair
jue., abr. 23 - lun., abr. 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
$431Icelandair
dom., may. 3 - sáb., may. 9

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
Apr 15
SEA7:00 amSeattle/Tacoma Intl
20h 05m
2 stops
BCN12:05 pmBarcelona-El Prat
Apr 23
BCN12:50 pmBarcelona-El Prat
17h 33m
1 stop
SEA9:23 pmSeattle/Tacoma Intl
$474
British Airways
Apr 15
SEA11:16 amSeattle/Tacoma Intl
17h 59m
2 stops
BCN2:15 pmBarcelona-El Prat
Apr 22
BCN10:30 amBarcelona-El Prat
21h 08m
1 stop
SEA10:38 pmSeattle/Tacoma Intl
$475
British Airways
Apr 20
SEA8:20 pmSeattle/Tacoma Intl
17h 10m
1 stop
BCN10:30 pmBarcelona-El Prat
Apr 27
BCN9:20 pmBarcelona-El Prat
23h 15m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$477

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 7
SEA11:59 pmSeattle/Tacoma Intl
23h 01m
2 stops
BCN8:00 amBarcelona-El Prat
Apr 14
BCN12:15 pmBarcelona-El Prat
37h 26m
2 stops
SEA4:41 pmSeattle/Tacoma Intl
$470
United Airlines
Apr 15
SEA8:00 amSeattle/Tacoma Intl
15h 20m
1 stop
BCN8:20 amBarcelona-El Prat
Apr 22
BCN1:15 pmBarcelona-El Prat
17h 38m
1 stop
SEA9:53 pmSeattle/Tacoma Intl
$485
United Airlines
Apr 19
SEA11:05 pmSeattle/Tacoma Intl
23h 55m
2 stops
BCN8:00 amBarcelona-El Prat
Apr 29
BCN1:15 pmBarcelona-El Prat
17h 38m
1 stop
SEA9:53 pmSeattle/Tacoma Intl
$488

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 febrero 13, 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

dom. 5/3

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

mié. 5/13

3:45 pm-8:40 pm

1 stop13h 55m

$404

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

vie. 5/1

7:00 pm-2:45 pm

1 stop34h 45m

Barcelona-El Prat

sáb. 5/9

3:45 pm-8:40 pm

1 stop13h 55m

$406

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

mié. 3/4

2:35 pm-1:35 pm

1 stop14h 00m

Barcelona-El Prat

mar. 3/10

11:50 am-6:00 pm

1 stop14h 10m

$414

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

mié. 4/22

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

mié. 4/29

3:45 pm-8:40 pm

1 stop13h 55m

$415

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

mar. 4/21

7:00 pm-2:45 pm

1 stop34h 45m

Barcelona-El Prat

mié. 4/29

3:45 pm-8:40 pm

1 stop13h 55m

$416

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

vie. 4/24

7:00 pm-2:45 pm

1 stop34h 45m

Barcelona-El Prat

mié. 4/29

3:45 pm-8:40 pm

1 stop13h 55m

$417

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 2/22

2:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

mar. 3/10

11:50 am-6:00 pm

1 stop14h 10m

$425

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

mié. 4/22

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

lun. 4/27

3:45 pm-8:40 pm

1 stop13h 55m

$426

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

jue. 4/23

7:00 pm-2:45 pm

1 stop34h 45m

Barcelona-El Prat

lun. 4/27

3:45 pm-8:40 pm

1 stop13h 55m

$428

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

dom. 5/3

3:40 pm-2:45 pm

1 stop14h 05m

Barcelona-El Prat

sáb. 5/9

3:45 pm-8:40 pm

1 stop13h 55m

$431

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 $486, 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 $497.

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 $772 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 $699 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 February 2026, prices for Seattle to Barcelona-El Prat Airport flights are approximately 2% 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

$648

Fastest flight time

10h 30m

Direct flights

Wed, Fri and Sun
The best one-way flight to Barcelona-El Prat Airport from Seattle in the past 72 hours is $648. The best round-trip flight deal from Seattle to Barcelona-El Prat Airport found on momondo in the last 72 hours is $879.
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 $367Free CancellationRating
7.1
614 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $461Free CancellationRating
7.3
1,682 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom $476Free CancellationRating
7.2
1,450 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $477Free CancellationRating
7.1
10,717 reviews
Search Air Canada flights
United AirlinesPriceFrom $482Free CancellationRating
7.4
9,285 reviews
Search United Airlines flights
DeltaPriceFrom $486Free CancellationRating
7.9
8,196 reviews
Search Delta flights
LufthansaPriceFrom $493Free CancellationRating
6.8
7,782 reviews
Search Lufthansa flights
British AirwaysPriceFrom $494Free CancellationRating
6.7
7,736 reviews
Search British Airways flights
American AirlinesPriceFrom $502Free CancellationRating
7.2
11,281 reviews
Search American Airlines flights
CondorPriceFrom $567Free CancellationRating
6.4
400 reviews
Search Condor 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
Tarragona
Castelldefels
El Prat de Llobregat
L'Hospitalet de Llobregat
Santa Susanna
Calella
Cadaques
Cambrils
Empuriabrava
Pals
Roses
Pineda de Mar
Badalona
Malgrat de Mar
Palafrugell
Tortosa

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.

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