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Cheap flights from Seattle to Barcelona from C$ 686

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 29/4. 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.
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
12:40 p.m. - 1:45 p.m.
BCN
-
SEA
34h 05m
2 stops
C$ 726Scandinavian Airlines
Sun, 30 Aug - Thu, 24 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
7:00 p.m. - 1:45 p.m.
BCN
-
SEA
27h 45m
1 stop
C$ 738Scandinavian Airlines
Sun, 30 Aug - Sat, 26 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
12:25 p.m. - 1:45 p.m.
BCN
-
SEA
34h 20m
1 stop
C$ 827Scandinavian Airlines
Tue, 8 Sep - Thu, 24 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
7:00 p.m. - 1:45 p.m.
BCN
-
SEA
27h 45m
1 stop
C$ 834Scandinavian Airlines
Sat, 29 Aug - Sat, 5 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
12:40 p.m. - 1:45 p.m.
BCN
-
SEA
34h 05m
2 stops
C$ 837Scandinavian Airlines
Tue, 8 Sep - Thu, 24 Sep
Scandinavian Airlines Logo
3:55 p.m. - 11:50 a.m.
SEA
-
BCN
34h 55m
2 stops
Scandinavian Airlines Logo
10:25 a.m. - 1:45 p.m.
BCN
-
SEA
36h 20m
1 stop
C$ 844Scandinavian Airlines
Tue, 25 Aug - Fri, 4 Sep
Condor Logo
6:05 p.m. - 10:10 p.m.
SEA
-
BCN
19h 05m
1 stop
Condor Logo
8:00 a.m. - 3:40 p.m.
BCN
-
SEA
16h 40m
1 stop
C$ 848Condor
Tue, 4 Aug - Tue, 22 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
7:00 p.m. - 1:45 p.m.
BCN
-
SEA
27h 45m
1 stop
C$ 849Scandinavian Airlines
Tue, 8 Sep - Sat, 26 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
7:00 p.m. - 10:25 p.m.
BCN
-
SEA
36h 25m
2 stops
C$ 862Scandinavian Airlines
Sun, 30 Aug - Tue, 22 Sep
Scandinavian Airlines Logo
5:45 p.m. - 6:10 p.m.
SEA
-
BCN
39h 25m
2 stops
Scandinavian Airlines Logo
7:00 p.m. - 1:45 p.m.
BCN
-
SEA
27h 45m
1 stop
C$ 872Scandinavian Airlines
Sun, 30 Aug - Sat, 26 Sep

TAP AIR PORTUGAL flights from Seattle to Barcelona-El Prat Airport

Our best TAP AIR PORTUGAL deals on Seattle to Barcelona-El Prat Airport flight tickets
TAP AIR PORTUGAL
31 Mar
SEA12:08 p.m.Seattle/Tacoma Intl
28h 22m
3 stops
BCN1:30 a.m.Barcelona-El Prat
14 Apr
BCN6:00 a.m.Barcelona-El Prat
26h 46m
2 stops
SEA11:46 p.m.Seattle/Tacoma Intl
C$ 2,762
TAP AIR PORTUGAL
31 Mar
SEA12:08 p.m.Seattle/Tacoma Intl
28h 22m
3 stops
BCN1:30 a.m.Barcelona-El Prat
14 Apr
BCN6:00 a.m.Barcelona-El Prat
26h 46m
2 stops
SEA11:46 p.m.Seattle/Tacoma Intl
C$ 2,831
TAP AIR PORTUGAL
31 Mar
SEA12:08 p.m.Seattle/Tacoma Intl
28h 22m
3 stops
BCN1:30 a.m.Barcelona-El Prat
14 Apr
BCN6:00 a.m.Barcelona-El Prat
26h 46m
2 stops
SEA11:46 p.m.Seattle/Tacoma Intl
C$ 3,120

Condor flights from Seattle to Barcelona-El Prat Airport

Our best Condor deals on Seattle to Barcelona-El Prat Airport flight tickets
Condor
4 Aug
SEA6:05 p.m.Seattle/Tacoma Intl
19h 05m
1 stop
BCN10:10 p.m.Barcelona-El Prat
22 Sep
BCN8:00 a.m.Barcelona-El Prat
16h 40m
1 stop
SEA3:40 p.m.Seattle/Tacoma Intl
C$ 848
Condor
5 Aug
SEA5:40 p.m.Seattle/Tacoma Intl
19h 30m
1 stop
BCN10:10 p.m.Barcelona-El Prat
22 Sep
BCN10:25 a.m.Barcelona-El Prat
14h 15m
1 stop
SEA3:40 p.m.Seattle/Tacoma Intl
C$ 894
Condor
14 Sep
SEA6:10 p.m.Seattle/Tacoma Intl
19h 00m
1 stop
BCN10:10 p.m.Barcelona-El Prat
23 Sep
BCN8:00 a.m.Barcelona-El Prat
16h 40m
1 stop
SEA3:40 p.m.Seattle/Tacoma Intl
C$ 969

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 22 March 2026.
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

Cheapest round-trip

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 30/8

3:55 p.m.-6:10 p.m.

1 stop17h 15m

Barcelona-El Prat

Thu 24/9

12:40 p.m.-1:45 p.m.

2 stops34h 05m

C$ 726

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 30/8

3:55 p.m.-6:10 p.m.

1 stop17h 15m

Barcelona-El Prat

Sat 26/9

7:00 p.m.-1:45 p.m.

1 stop27h 45m

C$ 738

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 8/9

3:55 p.m.-6:10 p.m.

1 stop17h 15m

Barcelona-El Prat

Thu 24/9

12:25 p.m.-1:45 p.m.

1 stop34h 20m

C$ 827

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 29/8

3:55 p.m.-6:10 p.m.

1 stop17h 15m

Barcelona-El Prat

Sat 5/9

7:00 p.m.-1:45 p.m.

1 stop27h 45m

C$ 834

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 8/9

3:55 p.m.-6:10 p.m.

1 stop17h 15m

Barcelona-El Prat

Thu 24/9

12:40 p.m.-1:45 p.m.

2 stops34h 05m

C$ 837

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 25/8

3:55 p.m.-11:50 a.m.

2 stops34h 55m

Barcelona-El Prat

Fri 4/9

10:25 a.m.-1:45 p.m.

1 stop36h 20m

C$ 844
Quickest round-trip

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 4/8

6:05 p.m.-10:10 p.m.

1 stop19h 05m

Barcelona-El Prat

Tue 22/9

8:00 a.m.-3:40 p.m.

1 stop16h 40m

C$ 848

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 8/9

3:55 p.m.-6:10 p.m.

1 stop17h 15m

Barcelona-El Prat

Sat 26/9

7:00 p.m.-1:45 p.m.

1 stop27h 45m

C$ 849

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 30/8

3:55 p.m.-6:10 p.m.

1 stop17h 15m

Barcelona-El Prat

Tue 22/9

7:00 p.m.-10:25 p.m.

2 stops36h 25m

C$ 862

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 30/8

5:45 p.m.-6:10 p.m.

2 stops39h 25m

Barcelona-El Prat

Sat 26/9

7:00 p.m.-1:45 p.m.

1 stop27h 45m

C$ 872

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$ 667, 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$ 693.

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$ 1,039 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$ 899 on momondo.

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

You could potentially save up to 36% 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 March 2026, prices for Seattle to Barcelona-El Prat Airport flights are approximately 16% 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

30h 45m

Direct flights

Wed, Fri and Sun
The fastest flight from Seattle to Barcelona-El Prat Airport takes 30h 45m
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 30h 45m.

  • 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$ 652Free CancellationRating
6.8
7,860 reviews
Search Lufthansa flights

Travelling to a place near Barcelona?

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

An easier way to manage your Barcelona-El Prat Airport trip

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