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Cheap flights from Seattle to Barcelona from C$ 550

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 19/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 p.m. - 1:35 p.m.
SEA
-
BCN
14h 00m1 stop
Icelandair Logo
11:50 a.m. - 5:00 p.m.
BCN
-
SEA
14h 10m1 stop
C$ 568Icelandair
Fri, 30 Jan - Tue, 3 Feb
Icelandair Logo
2:35 p.m. - 1:35 p.m.
SEA
-
BCN
14h 00m1 stop
Icelandair Logo
11:50 a.m. - 5:00 p.m.
BCN
-
SEA
14h 10m1 stop
C$ 569Icelandair
Fri, 30 Jan - Tue, 3 Mar
Icelandair Logo
2:35 p.m. - 1:15 p.m.
SEA
-
BCN
13h 40m1 stop
Icelandair Logo
11:50 a.m. - 5:00 p.m.
BCN
-
SEA
14h 10m1 stop
C$ 621Icelandair
Wed, 4 Feb - Sun, 8 Feb
United Airlines Logo
7:00 a.m. - 9:00 a.m.
SEA
-
BCN
17h 00m1 stop
United Airlines Logo
1:35 p.m. - 4:01 p.m.
BCN
-
SEA
35h 26m2 stops
C$ 641United Airlines
Mon, 19 Jan - Tue, 27 Jan
United Airlines Logo
7:30 p.m. - 9:35 a.m.
SEA
-
BCN
29h 05m2 stops
United Airlines Logo
1:35 p.m. - 10:43 p.m.
BCN
-
SEA
42h 08m2 stops
C$ 645United Airlines
Thu, 22 Jan - Sat, 31 Jan
United Airlines Logo
11:59 p.m. - 9:00 a.m.
SEA
-
BCN
24h 01m2 stops
United Airlines Logo
12:35 p.m. - 10:45 p.m.
BCN
-
SEA
42h 10m2 stops
C$ 646United Airlines
Mon, 16 Feb - Wed, 18 Mar
United Airlines Logo
5:00 a.m. - 5:35 p.m.
SEA
-
BCN
27h 35m2 stops
United Airlines Logo
1:35 p.m. - 11:32 a.m.
BCN
-
SEA
30h 57m2 stops
C$ 650United Airlines
Mon, 19 Jan - Tue, 27 Jan
United Airlines Logo
11:59 p.m. - 2:15 p.m.
SEA
-
BCN
29h 16m2 stops
United Airlines Logo
12:35 p.m. - 7:03 p.m.
BCN
-
SEA
38h 28m2 stops
C$ 652United Airlines
Mon, 16 Feb - Tue, 17 Mar
United Airlines Logo
12:43 p.m. - 8:20 a.m.
SEA
-
BCN
34h 37m2 stops
United Airlines Logo
1:35 p.m. - 7:03 p.m.
BCN
-
SEA
38h 28m2 stops
C$ 654United Airlines
Wed, 18 Feb - Tue, 24 Feb
United Airlines Logo
7:00 a.m. - 9:00 a.m.
SEA
-
BCN
17h 00m1 stop
United Airlines Logo
6:50 a.m. - 12:10 p.m.
BCN
-
SEA
14h 20m1 stop
C$ 659United Airlines
Tue, 3 Feb - Mon, 9 Feb

Icelandair flights from Seattle to Barcelona-El Prat Airport

Our best Icelandair deals on Seattle to Barcelona-El Prat Airport flight tickets
Icelandair
30 Jan
SEA2:35 p.m.Seattle/Tacoma Intl
14h 00m
1 stop
BCN1:35 p.m.Barcelona-El Prat
3 Feb
BCN11:50 a.m.Barcelona-El Prat
14h 10m
1 stop
SEA5:00 p.m.Seattle/Tacoma Intl
C$ 568
Find similar
Icelandair
30 Jan
SEA2:35 p.m.Seattle/Tacoma Intl
14h 00m
1 stop
BCN1:35 p.m.Barcelona-El Prat
3 Mar
BCN11:50 a.m.Barcelona-El Prat
14h 10m
1 stop
SEA5:00 p.m.Seattle/Tacoma Intl
C$ 569
Find similar
Icelandair
4 Feb
SEA2:35 p.m.Seattle/Tacoma Intl
13h 40m
1 stop
BCN1:15 p.m.Barcelona-El Prat
8 Feb
BCN11:50 a.m.Barcelona-El Prat
14h 10m
1 stop
SEA5:00 p.m.Seattle/Tacoma Intl
C$ 621
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
16 Feb
SEA2:15 p.m.Seattle/Tacoma Intl
14h 45m
1 stop
BCN2:00 p.m.Barcelona-El Prat
3 Mar
BCN1:00 p.m.Barcelona-El Prat
31h 35m
1 stop
SEA11:35 a.m.Seattle/Tacoma Intl
C$ 661
Find similar
Delta
16 Mar
SEA7:20 a.m.Seattle/Tacoma Intl
15h 40m
1 stop
BCN7:00 a.m.Barcelona-El Prat
26 Mar
BCN9:15 a.m.Barcelona-El Prat
21h 07m
1 stop
SEA10:22 p.m.Seattle/Tacoma Intl
C$ 667
Find similar
Delta
2 Feb
SEA7:10 a.m.Seattle/Tacoma Intl
22h 50m
2 stops
BCN3:00 p.m.Barcelona-El Prat
13 Feb
BCN6:00 a.m.Barcelona-El Prat
14h 40m
1 stop
SEA11:40 a.m.Seattle/Tacoma Intl
C$ 668
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 18 December 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

Fri 30/1

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

1 stop14h 00m

Barcelona-El Prat

Tue 3/2

11:50 a.m.-5:00 p.m.

1 stop14h 10m

C$ 568

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 30/1

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

1 stop14h 00m

Barcelona-El Prat

Tue 3/3

11:50 a.m.-5:00 p.m.

1 stop14h 10m

C$ 569

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/2

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

1 stop13h 40m

Barcelona-El Prat

Sun 8/2

11:50 a.m.-5:00 p.m.

1 stop14h 10m

C$ 621

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 19/1

7:00 a.m.-9:00 a.m.

1 stop17h 00m

Barcelona-El Prat

Tue 27/1

1:35 p.m.-4:01 p.m.

2 stops35h 26m

C$ 641

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 22/1

7:30 p.m.-9:35 a.m.

2 stops29h 05m

Barcelona-El Prat

Sat 31/1

1:35 p.m.-10:43 p.m.

2 stops42h 08m

C$ 645

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 16/2

11:59 p.m.-9:00 a.m.

2 stops24h 01m

Barcelona-El Prat

Wed 18/3

12:35 p.m.-10:45 p.m.

2 stops42h 10m

C$ 646

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 19/1

5:00 a.m.-5:35 p.m.

2 stops27h 35m

Barcelona-El Prat

Tue 27/1

1:35 p.m.-11:32 a.m.

2 stops30h 57m

C$ 650

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 16/2

11:59 p.m.-2:15 p.m.

2 stops29h 16m

Barcelona-El Prat

Tue 17/3

12:35 p.m.-7:03 p.m.

2 stops38h 28m

C$ 652

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 18/2

12:43 p.m.-8:20 a.m.

2 stops34h 37m

Barcelona-El Prat

Tue 24/2

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

2 stops38h 28m

C$ 654

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 3/2

7:00 a.m.-9:00 a.m.

1 stop17h 00m

Barcelona-El Prat

Mon 9/2

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

1 stop14h 20m

C$ 659

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 C$ 894, 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 February, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around C$ 909.

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$ 850. 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$ 1,762.

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$ 909. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 1,444 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$ 1,158 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$ 986 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 December 2025, prices for Seattle to Barcelona-El Prat Airport flights are approximately 17% 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

Fastest flight time

19h 35m

Direct flights

Wed, Fri and Sun
The fastest flight from Seattle to Barcelona-El Prat Airport takes 19h 35m
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 8711.2 km between Seattle/Tacoma Intl and Barcelona-El Prat. In terms of flight time, this usually takes a little over 19h 35m.

  • 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 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?

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
Calella
Pineda de Mar
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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