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Cheap flights from Seattle to Barcelona from $272

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 1/15. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:00 pm - 9:35 amSEA-BCN
52h 35m2 stops
Multiple Airlines Logo
6:50 am - 12:10 pmBCN-SEA
14h 20m1 stop
$447Multiple Airlines
Find Deal
Mon, Dec 8 - Tue, Dec 23
Air Canada Logo
3:40 pm - 9:35 amSEA-BCN
32h 55m2 stops
Air Canada Logo
5:50 am - 10:16 pmBCN-SEA
25h 26m2 stops
$448Air Canada
Find Deal
Sat, Nov 29 - Sun, Dec 14
Lufthansa Logo
2:00 pm - 1:00 pmSEA-BCN
14h 00m1 stop
Lufthansa Logo
6:50 am - 12:10 pmBCN-SEA
14h 20m1 stop
$449Lufthansa
Find Deal
Mon, Dec 1 - Mon, Dec 8
Multiple Airlines Logo
5:50 am - 9:35 amSEA-BCN
18h 45m2 stops
Multiple Airlines Logo
6:50 am - 12:10 pmBCN-SEA
14h 20m1 stop
$454Multiple Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 11
United Airlines Logo
11:45 pm - 9:35 amSEA-BCN
24h 50m2 stops
United Airlines Logo
1:35 pm - 7:03 pmBCN-SEA
38h 28m2 stops
$461United Airlines
Find Deal
Sat, Feb 14 - Tue, Feb 24
United Airlines Logo
3:10 pm - 5:35 pmSEA-BCN
17h 25m1 stop
United Airlines Logo
1:35 pm - 4:01 pmBCN-SEA
35h 26m2 stops
$464United Airlines
Find Deal
Fri, Jan 16 - Thu, Jan 22
Lufthansa Logo
2:00 pm - 1:00 pmSEA-BCN
14h 00m1 stop
Lufthansa Logo
5:50 am - 12:10 pmBCN-SEA
15h 20m1 stop
$466Lufthansa
Find Deal
Mon, Jan 26 - Mon, Feb 16
Delta Logo
1:40 pm - 8:50 amSEA-BCN
34h 10m1 stop
Delta Logo
6:00 am - 11:50 amBCN-SEA
14h 50m1 stop
$481Delta
Find Deal
Thu, Jan 15 - Sat, Jan 24
Delta Logo
9:25 am - 3:00 pmSEA-BCN
20h 35m2 stops
Delta Logo
11:10 am - 11:50 amBCN-SEA
33h 40m1 stop
$483Delta
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Fri, Jan 16 - Sat, Jan 24
KLM Logo
3:05 pm - 11:05 pmSEA-BCN
23h 00m1 stop
KLM Logo
7:55 pm - 11:50 amBCN-SEA
24h 55m1 stop
$507KLM
Find Deal
Mon, Dec 8 - Tue, Dec 23

Air Canada flights from Seattle to Barcelona

Our best Air Canada deals on Seattle to Barcelona flight tickets
Air Canada
Nov 29
SEA3:40 pmSeattle/Tacoma Intl
32h 55m
2 stops
BCN9:35 amBarcelona-El Prat
Dec 14
BCN5:50 amBarcelona-El Prat
25h 26m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$448
Find similar
Air Canada
Jan 11
SEA8:00 pmSeattle/Tacoma Intl
28h 35m
2 stops
BCN9:35 amBarcelona-El Prat
Jan 27
BCN1:35 pmBarcelona-El Prat
28h 56m
2 stops
SEA9:31 amSeattle/Tacoma Intl
$469
Find similar
Air Canada
Nov 30
SEA5:45 amSeattle/Tacoma Intl
18h 50m
2 stops
BCN9:35 amBarcelona-El Prat
Dec 7
BCN6:50 amBarcelona-El Prat
21h 26m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$471
Find similar

Lufthansa flights from Seattle to Barcelona

Our best Lufthansa deals on Seattle to Barcelona flight tickets
Lufthansa
Dec 1
SEA2:00 pmSeattle/Tacoma Intl
14h 00m
1 stop
BCN1:00 pmBarcelona-El Prat
Dec 8
BCN6:50 amBarcelona-El Prat
14h 20m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$449
Find similar
Lufthansa
Jan 26
SEA2:00 pmSeattle/Tacoma Intl
14h 00m
1 stop
BCN1:00 pmBarcelona-El Prat
Feb 16
BCN5:50 amBarcelona-El Prat
15h 20m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$466
Find similar
Lufthansa
Nov 30
SEA3:10 pmSeattle/Tacoma Intl
17h 25m
1 stop
BCN5:35 pmBarcelona-El Prat
Dec 7
BCN6:30 pmBarcelona-El Prat
26h 40m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$474
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 November 3, 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

Mon 12/8

8:00 pm-9:35 am

2 stops52h 35m

Barcelona-El Prat

Tue 12/23

6:50 am-12:10 pm

1 stop14h 20m

$447

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 11/29

3:40 pm-9:35 am

2 stops32h 55m

Barcelona-El Prat

Sun 12/14

5:50 am-10:16 pm

2 stops25h 26m

$448

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 12/1

2:00 pm-1:00 pm

1 stop14h 00m

Barcelona-El Prat

Mon 12/8

6:50 am-12:10 pm

1 stop14h 20m

$449

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 12/3

5:50 am-9:35 am

2 stops18h 45m

Barcelona-El Prat

Thu 12/11

6:50 am-12:10 pm

1 stop14h 20m

$454

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

$461

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/16

3:10 pm-5:35 pm

1 stop17h 25m

Barcelona-El Prat

Thu 1/22

1:35 pm-4:01 pm

2 stops35h 26m

$464

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 1/26

2:00 pm-1:00 pm

1 stop14h 00m

Barcelona-El Prat

Mon 2/16

5:50 am-12:10 pm

1 stop15h 20m

$466

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 1/15

1:40 pm-8:50 am

1 stop34h 10m

Barcelona-El Prat

Sat 1/24

6:00 am-11:50 am

1 stop14h 50m

$481

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 1/16

9:25 am-3:00 pm

2 stops20h 35m

Barcelona-El Prat

Sat 1/24

11:10 am-11:50 am

1 stop33h 40m

$483

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 12/8

3:05 pm-11:05 pm

1 stop23h 00m

Barcelona-El Prat

Tue 12/23

7:55 pm-11:50 am

1 stop24h 55m

$507

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 cheapest month to fly to Barcelona?

The month of November is, on average, the cheapest month to fly to Barcelona from Seattle, with most prices found around $669. If you don’t want to visit Barcelona in November, then you should wait until February to fly from Seattle, when ticket prices are also cheap, with an average price of $673.

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 $846 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 $709 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

Direct flights

None
There are no direct flights from Seattle to Barcelona. There are no popular flight routes from Seattle to Barcelona.
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 14h 00m.

  • 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 $389Free CancellationRating
7.1
568 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $465Free CancellationRating
7.4
1,557 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $478Free CancellationRating
7.1
10,400 reviews
Search Air Canada flights
United AirlinesPriceFrom $492Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
Aer LingusPriceFrom $498Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
IberiaPriceFrom $507Free CancellationRating
7.0
3,006 reviews
Search Iberia flights
British AirwaysPriceFrom $549Free CancellationRating
6.7
7,494 reviews
Search British Airways flights
LufthansaPriceFrom $562Free CancellationRating
6.8
7,547 reviews
Search Lufthansa flights
KLMPriceFrom $574Free CancellationRating
7.7
1,405 reviews
Search KLM flights
American AirlinesPriceFrom $590Free CancellationRating
7.2
11,038 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