What airlines fly to Barcelona?

British Airways, Icelandair and Delta are the top three most popular airlines that fly to Barcelona from Seattle according to our data. British Airways is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Barcelona. Keep in mind that there are 16 different airlines that fly to Barcelona on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Seattle/Tacoma Intl Airport to Barcelona are updated daily.

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

As of December 2025, there are 16 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Barcelona.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Barcelona.

What documentation or ID do you need to fly to Barcelona?

The required travel and health documents for your Barcelona trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Barcelona. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$272 Cheap Flights from Seattle to Barcelona in 2025/26

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Find the cheapest flights from Seattle to Barcelona

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 1:35 pm

SEA

BCN

14h 00m1 stop

11:50 am - 5:00 pm

BCN

SEA

14h 10m1 stop

$386Icelandair

Fri, Jan 23 - Fri, Jan 30

2:35 pm - 1:15 pm

SEA

BCN

13h 40m1 stop

11:50 am - 5:00 pm

BCN

SEA

14h 10m1 stop

$413Icelandair

Wed, Feb 18 - Fri, Feb 27

2:35 pm - 1:15 pm

SEA

BCN

13h 40m1 stop

11:50 am - 5:00 pm

BCN

SEA

14h 10m1 stop

$424Icelandair

Sun, Feb 15 - Tue, Feb 24

3:10 pm - 5:35 pm

SEA

BCN

17h 25m1 stop

7:40 am - 1:20 pm

BCN

SEA

14h 40m1 stop

$432Lufthansa

Fri, Feb 20 - Fri, Feb 27

3:10 pm - 2:45 pm

SEA

BCN

14h 35m1 stop

10:30 am - 8:56 pm

BCN

SEA

19h 26m1 stop

$438Lufthansa

Wed, Feb 18 - Wed, Feb 25

3:10 pm - 2:45 pm

SEA

BCN

14h 35m1 stop

9:55 am - 9:01 pm

BCN

SEA

20h 06m2 stops

$440Multiple Airlines

Fri, Feb 20 - Fri, Feb 27

2:00 pm - 1:00 pm

SEA

BCN

14h 00m1 stop

5:50 am - 12:10 pm

BCN

SEA

15h 20m1 stop

$443Lufthansa

Mon, Feb 9 - Mon, Feb 16

3:10 pm - 5:35 pm

SEA

BCN

17h 25m1 stop

9:55 am - 9:01 pm

BCN

SEA

20h 06m2 stops

$446Multiple Airlines

Sun, Feb 15 - Tue, Feb 24

3:10 pm - 5:35 pm

SEA

BCN

17h 25m1 stop

9:55 am - 9:12 pm

BCN

SEA

20h 17m2 stops

$448Multiple Airlines

Fri, Jan 23 - Fri, Jan 30

8:00 pm - 9:35 am

SEA

BCN

52h 35m2 stops

1:35 pm - 9:15 am

BCN

SEA

28h 40m2 stops

$449Air Canada

Mon, Feb 9 - Mon, Feb 16

Icelandair flights from Seattle to Barcelona

Our best Icelandair deals on Seattle to Barcelona flight tickets

Icelandair

Jan 23

SEA2:35 pmSeattle/Tacoma Intl

14h 00m

1 stop

BCN1:35 pmBarcelona-El Prat

Jan 30

BCN11:50 amBarcelona-El Prat

14h 10m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$386

Find similar

Icelandair

Feb 6

SEA2:35 pmSeattle/Tacoma Intl

14h 00m

1 stop

BCN1:35 pmBarcelona-El Prat

Feb 13

BCN11:50 amBarcelona-El Prat

14h 10m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$390

Find similar

Icelandair

Jan 25

SEA2:35 pmSeattle/Tacoma Intl

13h 40m

1 stop

BCN1:15 pmBarcelona-El Prat

Feb 1

BCN11:50 amBarcelona-El Prat

14h 10m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$413

Find similar

Lufthansa flights from Seattle to Barcelona

Our best Lufthansa deals on Seattle to Barcelona flight tickets

Lufthansa

Feb 20

SEA3:10 pmSeattle/Tacoma Intl

17h 25m

1 stop

BCN5:35 pmBarcelona-El Prat

Feb 27

BCN7:40 amBarcelona-El Prat

14h 40m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$432

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

Lufthansa

Feb 6

SEA3:10 pmSeattle/Tacoma Intl

22h 55m

1 stop

BCN11:05 pmBarcelona-El Prat

Feb 13

BCN5:50 amBarcelona-El Prat

25h 53m

2 stops

SEA10:43 pmSeattle/Tacoma Intl

$472

Find similar

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 2/20

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Fri 2/27

7:40 am-1:20 pm

1 stop14h 40m

$432

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

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 2/9

8:00 pm-9:35 am

2 stops52h 35m

Barcelona-El Prat

Mon 2/16

1:35 pm-9:15 am

2 stops28h 40m

$449

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Barcelona

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

Prices

Airlines

What is the cheapest month to fly to Barcelona?

The month of February is, on average, the cheapest month to fly to Barcelona from Seattle, with most prices found around $614. If you don’t want to visit Barcelona in February, then you should wait until January to fly from Seattle, when ticket prices are also cheap, with an average price of $645.

What is the cheapest day to depart on your flight to Barcelona?

The cheapest day to depart from Seattle to Barcelona is on a Thursday when prices can be found for as low as $1,924. On the other hand, Tuesday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $2,198.

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

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

How far in advance should I book a flight to Barcelona?

You are more likely to see cheaper flights to Barcelona from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona 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 from Seattle for as low as $715 on momondo.

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

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

Cheap Seattle to Barcelona flight deals and tips

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

Fastest flight time	10h 35m
Direct flights	Wed, Fri and Sun
Airports in Barcelona	3 airports

The fastest flight from Seattle to Barcelona takes 10h 35m

Direct flights go from Seattle to Barcelona on Wednesday, Friday and Sunday. There are no airlines offering direct flights.

There are 3 airports in Barcelona. From Seattle there are direct flights to Barcelona-El Prat (BCN).

Search flight deals

How far is Seattle/Tacoma Intl to Barcelona by plane?
A flight from Seattle/Tacoma Intl to Barcelona will travel around 5410.7 mi. A reasonable flight in good conditions will take 10h 35m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Barcelona?
Prices for flights from Seattle/Tacoma Intl Airport to Barcelona are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Barcelona?
As of December 2025, there are 16 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Barcelona.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Barcelona?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Barcelona.
What documentation or ID do you need to fly to Barcelona?
The required travel and health documents for your Barcelona trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Barcelona. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Seattle to Barcelona

Compare and see reviews for airlines that fly from Seattle to Barcelona with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $368	Free Cancellation	Rating 7.0 592 reviews	Search Icelandair flights
Scandinavian Airlines	PriceFrom $461	Free Cancellation	Rating 7.4 1,630 reviews	Search Scandinavian Airlines flights
Air Canada	PriceFrom $478	Free Cancellation	Rating 7.1 10,563 reviews	Search Air Canada flights
United Airlines	PriceFrom $483	Free Cancellation	Rating 7.4 9,120 reviews	Search United Airlines flights
Delta	PriceFrom $487	Free Cancellation	Rating 7.9 8,012 reviews	Search Delta flights
Aer Lingus	PriceFrom $498	Free Cancellation	Rating 7.2 1,415 reviews	Search Aer Lingus flights
American Airlines	PriceFrom $502	Free Cancellation	Rating 7.2 11,067 reviews	Search American Airlines flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 7,621 reviews	Search British Airways flights
Lufthansa	PriceFrom $530	Free Cancellation	Rating 6.8 7,659 reviews	Search Lufthansa flights
Iberia	PriceFrom $572	Free Cancellation	Rating 7.0 3,059 reviews	Search Iberia flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Barcelona from Seattle.

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

All flight searches from Seattle to Barcelona on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Seattle to Barcelona flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Seattle to Barcelona now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Barcelona and let you know when they change.