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Cheap flights from Seattle to Barcelona from C$ 557

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 29/1. 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.
United Airlines Logo
11:45 p.m. - 9:35 a.m.SEA-BCN
24h 50m2 stops
United Airlines Logo
1:35 p.m. - 7:03 p.m.BCN-SEA
38h 28m2 stops
C$ 644United Airlines
Find Deal
Sat, 14 Feb - Tue, 24 Feb
United Airlines Logo
10:53 a.m. - 1:10 p.m.SEA-BCN
17h 17m1 stop
United Airlines Logo
6:50 a.m. - 12:10 p.m.BCN-SEA
14h 20m1 stop
C$ 658United Airlines
Find Deal
Thu, 27 Nov - Thu, 11 Dec
Delta Logo
1:40 p.m. - 3:00 p.m.SEA-BCN
16h 20m1 stop
Delta Logo
1:00 p.m. - 11:50 a.m.BCN-SEA
31h 50m1 stop
C$ 669Delta
Find Deal
Tue, 2 Dec - Wed, 17 Dec
Delta Logo
2:05 p.m. - 5:05 p.m.SEA-BCN
18h 00m1 stop
Delta Logo
6:00 a.m. - 11:50 a.m.BCN-SEA
14h 50m1 stop
C$ 670Delta
Find Deal
Wed, 3 Dec - Thu, 18 Dec
Multiple Airlines Logo
5:02 a.m. - 5:35 p.m.SEA-BCN
27h 33m2 stops
Multiple Airlines Logo
7:40 a.m. - 1:20 p.m.BCN-SEA
14h 40m1 stop
C$ 680Multiple Airlines
Find Deal
Thu, 1 Jan - Sun, 11 Jan
Lufthansa Logo
2:00 p.m. - 7:50 p.m.SEA-BCN
20h 50m1 stop
Lufthansa Logo
6:50 a.m. - 12:10 p.m.BCN-SEA
14h 20m1 stop
C$ 688Lufthansa
Find Deal
Thu, 12 Feb - Sat, 21 Feb
Lufthansa Logo
2:00 p.m. - 1:05 p.m.SEA-BCN
14h 05m1 stop
Lufthansa Logo
6:25 p.m. - 12:10 p.m.BCN-SEA
26h 45m1 stop
C$ 716Lufthansa
Find Deal
Thu, 12 Feb - Fri, 20 Feb
Scandinavian Airlines Logo
7:10 a.m. - 6:20 p.m.SEA-BCN
26h 10m2 stops
Scandinavian Airlines Logo
7:10 p.m. - 10:24 p.m.BCN-SEA
36h 14m2 stops
C$ 751Scandinavian Airlines
Find Deal
Wed, 14 Jan - Sun, 25 Jan
Scandinavian Airlines Logo
7:10 a.m. - 6:20 p.m.SEA-BCN
26h 10m2 stops
Scandinavian Airlines Logo
7:10 p.m. - 7:00 p.m.BCN-SEA
32h 50m2 stops
C$ 807Scandinavian Airlines
Find Deal
Fri, 5 Dec - Sun, 14 Dec
Multiple Airlines Logo
2:35 p.m. - 1:15 p.m.SEA-BCN
13h 40m1 stop
Multiple Airlines Logo
11:50 a.m. - 8:39 p.m.BCN-SEA
17h 49m2 stops
C$ 1,127Multiple Airlines
Find Deal
Sun, 1 Feb - Fri, 6 Feb

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
14 Feb
SEA11:45 p.m.Seattle/Tacoma Intl
24h 50m
2 stops
BCN9:35 a.m.Barcelona-El Prat
24 Feb
BCN1:35 p.m.Barcelona-El Prat
38h 28m
2 stops
SEA7:03 p.m.Seattle/Tacoma Intl
C$ 644
Find similar
United Airlines
27 Nov
SEA10:53 a.m.Seattle/Tacoma Intl
17h 17m
1 stop
BCN1:10 p.m.Barcelona-El Prat
11 Dec
BCN6:50 a.m.Barcelona-El Prat
14h 20m
1 stop
SEA12:10 p.m.Seattle/Tacoma Intl
C$ 658
Find similar
United Airlines
4 Dec
SEA8:10 a.m.Seattle/Tacoma Intl
15h 10m
1 stop
BCN8:20 a.m.Barcelona-El Prat
16 Dec
BCN6:50 a.m.Barcelona-El Prat
14h 20m
1 stop
SEA12:10 p.m.Seattle/Tacoma Intl
C$ 665
Find similar

Delta flights from Seattle to Barcelona-El Prat Airport

Our best Delta deals on Seattle to Barcelona-El Prat Airport flight tickets
Delta
2 Dec
SEA1:40 p.m.Seattle/Tacoma Intl
16h 20m
1 stop
BCN3:00 p.m.Barcelona-El Prat
17 Dec
BCN1:00 p.m.Barcelona-El Prat
31h 50m
1 stop
SEA11:50 a.m.Seattle/Tacoma Intl
C$ 669
Find similar
Delta
3 Dec
SEA2:05 p.m.Seattle/Tacoma Intl
18h 00m
1 stop
BCN5:05 p.m.Barcelona-El Prat
18 Dec
BCN6:00 a.m.Barcelona-El Prat
14h 50m
1 stop
SEA11:50 a.m.Seattle/Tacoma Intl
C$ 670
Find similar
Delta
3 Dec
SEA7:20 a.m.Seattle/Tacoma Intl
18h 50m
2 stops
BCN11:10 a.m.Barcelona-El Prat
16 Dec
BCN6:00 a.m.Barcelona-El Prat
14h 50m
1 stop
SEA11:50 a.m.Seattle/Tacoma Intl
C$ 676
Find similar

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 96,600 searches. Data last updated 31 October 2025.
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

Sat 14/2

11:45 p.m.-9:35 a.m.

2 stops24h 50m

Barcelona-El Prat

Tue 24/2

1:35 p.m.-7:03 p.m.

2 stops38h 28m

C$ 644

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 27/11

10:53 a.m.-1:10 p.m.

1 stop17h 17m

Barcelona-El Prat

Thu 11/12

6:50 a.m.-12:10 p.m.

1 stop14h 20m

C$ 658

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 2/12

1:40 p.m.-3:00 p.m.

1 stop16h 20m

Barcelona-El Prat

Wed 17/12

1:00 p.m.-11:50 a.m.

1 stop31h 50m

C$ 669

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 3/12

2:05 p.m.-5:05 p.m.

1 stop18h 00m

Barcelona-El Prat

Thu 18/12

6:00 a.m.-11:50 a.m.

1 stop14h 50m

C$ 670

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 1/1

5:02 a.m.-5:35 p.m.

2 stops27h 33m

Barcelona-El Prat

Sun 11/1

7:40 a.m.-1:20 p.m.

1 stop14h 40m

C$ 680

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 12/2

2:00 p.m.-7:50 p.m.

1 stop20h 50m

Barcelona-El Prat

Sat 21/2

6:50 a.m.-12:10 p.m.

1 stop14h 20m

C$ 688

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 12/2

2:00 p.m.-1:05 p.m.

1 stop14h 05m

Barcelona-El Prat

Fri 20/2

6:25 p.m.-12:10 p.m.

1 stop26h 45m

C$ 716

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 14/1

7:10 a.m.-6:20 p.m.

2 stops26h 10m

Barcelona-El Prat

Sun 25/1

7:10 p.m.-10:24 p.m.

2 stops36h 14m

C$ 751

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 5/12

7:10 a.m.-6:20 p.m.

2 stops26h 10m

Barcelona-El Prat

Sun 14/12

7:10 p.m.-7:00 p.m.

2 stops32h 50m

C$ 807

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 1/2

2:35 p.m.-1:15 p.m.

1 stop13h 40m

Barcelona-El Prat

Fri 6/2

11:50 a.m.-8:39 p.m.

2 stops17h 49m

C$ 1,127

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 November. Flight prices, which tend to average around C$ 936, are often lower during this time because this is during the off-season. If you are unable to visit Barcelona-El Prat Airport during the month of November, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around C$ 940.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart from Seattle to Barcelona-El Prat Airport is on a Monday. Travellers who choose to depart for Barcelona-El Prat Airport on a Monday will often find tickets for as low as C$ 861. On the other hand, Tuesday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,786.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Our most recent data shows that the best time of day to fly to Barcelona-El Prat Airport is in the afternoon. Flights from Seattle to Barcelona-El Prat Airport during this time can be as low as C$ 921. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 1,463 on average. Flights to Barcelona-El Prat Airport from Seattle in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 C$ 1,182 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 C$ 990 on momondo.

Can stopping save me money on Seattle to Barcelona-El Prat Airport flights?

You could potentially save up to 7% 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 October 2025, prices for Seattle to Barcelona-El Prat Airport flights are approximately 25% cheaper 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

Direct flights

None
There are no direct flights from Seattle to Barcelona-El Prat Airport. There are no popular flight routes from Seattle to Barcelona-El Prat Airport.
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  • How far is Seattle/Tacoma Intl to Barcelona-El Prat by plane?

    There are 8711.2 km between Seattle/Tacoma Intl and Barcelona-El Prat. In terms of flight time, this usually takes a little over 13h 40m.

  • 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 were last updated today.

  • 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?

    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-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
LufthansaPriceFrom C$ 721Free CancellationRating
6.8
7,541 reviews
Search Lufthansa flights

Travelling to a place near Barcelona?

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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Barcelona for you.

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?

momondo helps you find the best flight between Seattle and Barcelona by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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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