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Cheap flights from Seattle to Barcelona from $251

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 3/2. 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 - 1:15 pm
SEA
-
BCN
13h 40m1 stop
Icelandair Logo
11:50 am - 5:00 pm
BCN
-
SEA
14h 10m1 stop
$447Icelandair
Fri, Feb 20 - Sun, Mar 1
Lufthansa Logo
2:00 pm - 5:45 pm
SEA
-
BCN
18h 45m1 stop
Lufthansa Logo
5:50 am - 12:10 pm
BCN
-
SEA
15h 20m1 stop
$451Lufthansa
Thu, Jan 22 - Thu, Feb 5
Multiple Airlines Logo
5:50 am - 9:35 am
SEA
-
BCN
18h 45m2 stops
Multiple Airlines Logo
9:10 am - 7:16 pm
BCN
-
SEA
19h 06m2 stops
$453Multiple Airlines
Wed, Feb 4 - Tue, Feb 10
Lufthansa Logo
3:10 pm - 5:35 pm
SEA
-
BCN
17h 25m1 stop
Lufthansa Logo
9:10 am - 9:31 am
BCN
-
SEA
33h 21m2 stops
$459Lufthansa
Wed, Feb 4 - Tue, Feb 10
Multiple Airlines Logo
3:10 pm - 5:35 pm
SEA
-
BCN
17h 25m1 stop
Multiple Airlines Logo
9:10 am - 7:16 pm
BCN
-
SEA
19h 06m2 stops
$460Multiple Airlines
Fri, Jan 9 - Fri, Jan 23
Multiple Airlines Logo
8:10 am - 2:05 pm
SEA
-
BCN
20h 55m2 stops
Multiple Airlines Logo
5:50 am - 7:16 pm
BCN
-
SEA
22h 26m2 stops
$462Multiple Airlines
Thu, Jan 22 - Thu, Feb 5
United Airlines Logo
7:00 am - 9:00 am
SEA
-
BCN
17h 00m1 stop
United Airlines Logo
1:35 pm - 11:32 am
BCN
-
SEA
30h 57m2 stops
$464United Airlines
Thu, Jan 22 - Thu, Feb 5
United Airlines Logo
3:10 pm - 5:35 pm
SEA
-
BCN
17h 25m1 stop
United Airlines Logo
1:35 pm - 4:01 pm
BCN
-
SEA
35h 26m2 stops
$467United Airlines
Wed, Jan 14 - Tue, Jan 20
United Airlines Logo
11:45 pm - 9:35 am
SEA
-
BCN
24h 50m2 stops
United Airlines Logo
1:35 pm - 7:03 pm
BCN
-
SEA
38h 28m2 stops
$468United Airlines
Sat, Feb 14 - Tue, Feb 24
Air Canada Logo
10:05 am - 9:35 am
SEA
-
BCN
38h 30m2 stops
Air Canada Logo
9:55 am - 10:16 pm
BCN
-
SEA
21h 21m2 stops
$470Air Canada
Sun, Jan 18 - Sun, Jan 25

Delta flights from Seattle to Barcelona

Our best Delta deals on Seattle to Barcelona flight tickets
Delta
Jan 29
SEA10:25 pmSeattle/Tacoma Intl
30h 35m
2 stops
BCN2:00 pmBarcelona-El Prat
Feb 6
BCN6:00 amBarcelona-El Prat
14h 40m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$484
Find similar
Delta
Jan 29
SEA7:10 amSeattle/Tacoma Intl
20h 05m
2 stops
BCN12:15 pmBarcelona-El Prat
Feb 7
BCN10:15 amBarcelona-El Prat
21h 10m
1 stop
SEA10:25 pmSeattle/Tacoma Intl
$485
Find similar

Scandinavian Airlines flights from Seattle to Barcelona

Our best Scandinavian Airlines deals on Seattle to Barcelona flight tickets
Scandinavian Airlines
Mar 16
SEA11:45 amSeattle/Tacoma Intl
22h 35m
2 stops
BCN6:20 pmBarcelona-El Prat
Mar 30
BCN10:35 amBarcelona-El Prat
44h 30m
2 stops
SEA10:05 pmSeattle/Tacoma Intl
$486
Find similar
Scandinavian Airlines
Jan 18
SEA11:25 amSeattle/Tacoma Intl
21h 55m
2 stops
BCN6:20 pmBarcelona-El Prat
Jan 23
BCN7:10 pmBarcelona-El Prat
34h 36m
2 stops
SEA8:46 pmSeattle/Tacoma Intl
$508
Find similar
Scandinavian Airlines
Apr 15
SEA7:20 amSeattle/Tacoma Intl
25h 50m
2 stops
BCN6:10 pmBarcelona-El Prat
Apr 22
BCN7:00 pmBarcelona-El Prat
37h 35m
2 stops
SEA11:35 pmSeattle/Tacoma Intl
$513
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Barcelona 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 4, 2025.
Use the filters below to find and compare flights from Seattle to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 2/20

2:35 pm-1:15 pm

1 stop13h 40m

Barcelona-El Prat

Sun 3/1

11:50 am-5:00 pm

1 stop14h 10m

$447

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 1/22

2:00 pm-5:45 pm

1 stop18h 45m

Barcelona-El Prat

Thu 2/5

5:50 am-12:10 pm

1 stop15h 20m

$451

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 2/4

5:50 am-9:35 am

2 stops18h 45m

Barcelona-El Prat

Tue 2/10

9:10 am-7:16 pm

2 stops19h 06m

$453

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 2/4

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Tue 2/10

9:10 am-9:31 am

2 stops33h 21m

$459

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/9

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Fri 1/23

9:10 am-7:16 pm

2 stops19h 06m

$460

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 1/22

8:10 am-2:05 pm

2 stops20h 55m

Barcelona-El Prat

Thu 2/5

5:50 am-7:16 pm

2 stops22h 26m

$462

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 1/22

7:00 am-9:00 am

1 stop17h 00m

Barcelona-El Prat

Thu 2/5

1:35 pm-11:32 am

2 stops30h 57m

$464

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 1/14

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Tue 1/20

1:35 pm-4:01 pm

2 stops35h 26m

$467

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 2/14

11:45 pm-9:35 am

2 stops24h 50m

Barcelona-El Prat

Tue 2/24

1:35 pm-7:03 pm

2 stops38h 28m

$468

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 1/18

10:05 am-9:35 am

2 stops38h 30m

Barcelona-El Prat

Sun 1/25

9:55 am-10:16 pm

2 stops21h 21m

$470

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

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?

What is the cheapest month to fly to Barcelona?

The month of January is, on average, the cheapest month to fly to Barcelona from Seattle, with most prices found around $643. If you don’t want to visit Barcelona in January, then you should wait until February to fly from Seattle, when ticket prices are also cheap, with an average price of $669.

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

The cheapest day to depart from Seattle to Barcelona is on a Sunday when prices can be found for as low as $876. 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 $2,579.

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

In the evening is the cheapest time of day to fly from Seattle to Barcelona when you can find flight prices for as low as $888. Flying to Barcelona in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $2,198 on average. Flights to Barcelona 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 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 $845 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 $720 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 30m

Direct flights

Wed, Fri and Sun

Airports in Barcelona

1 airport
The fastest flight from Seattle to Barcelona takes 10h 30m
Direct flights go from Seattle to Barcelona on Wednesday, Friday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Barcelona: 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 13h 40m.

  • 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?

  • 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
IcelandairPriceFrom $377Free CancellationRating
7.0
584 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $461Free CancellationRating
7.4
1,591 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $478Free CancellationRating
7.1
10,500 reviews
Search Air Canada flights
United AirlinesPriceFrom $486Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
Aer LingusPriceFrom $498Free CancellationRating
7.2
1,384 reviews
Search Aer Lingus flights
LufthansaPriceFrom $554Free CancellationRating
6.8
7,612 reviews
Search Lufthansa flights
British AirwaysPriceFrom $555Free CancellationRating
6.7
7,562 reviews
Search British Airways flights
IberiaPriceFrom $572Free CancellationRating
7.0
3,040 reviews
Search Iberia flights
KLMPriceFrom $574Free CancellationRating
7.7
1,430 reviews
Search KLM flights
American AirlinesPriceFrom $590Free CancellationRating
7.2
11,044 reviews
Search American Airlines 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.

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Find better results for your trip to Spain

Fly into one of these airports located in Barcelona

Airports listed have a maximum distance of 46.7 mi from Barcelona
Barcelona-El Prat Airport
Girona Costa Brava Airport