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Cheap flights from Seattle to Barcelona-El Prat Airport from $307

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-El Prat Airport departing on 10/18. 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
0 bags

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Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Barcelona.
Scandinavian Airlines Logo
4:00 pm - 6:10 pmSEA-BCN
17h 10m1 stop
Scandinavian Airlines Logo
7:00 pm - 1:50 pmBCN-SEA
27h 50m1 stop
$452Scandinavian Airlines
Find Deal
mié., ago. 20 - mar., sep. 9
Scandinavian Airlines Logo
4:00 pm - 6:10 pmSEA-BCN
17h 10m1 stop
Scandinavian Airlines Logo
7:00 pm - 1:50 pmBCN-SEA
27h 50m1 stop
$463Scandinavian Airlines
Find Deal
mié., ago. 27 - mar., sep. 9
United Airlines Logo
7:20 am - 7:50 amSEA-BCN
15h 30m1 stop
United Airlines Logo
12:15 pm - 3:31 pmBCN-SEA
36h 16m2 stops
$595United Airlines
Find Deal
mié., oct. 1 - vie., oct. 24
United Airlines Logo
8:42 am - 1:15 pmSEA-BCN
19h 33m2 stops
United Airlines Logo
12:15 pm - 3:31 pmBCN-SEA
36h 16m2 stops
$599United Airlines
Find Deal
mar., oct. 14 - jue., oct. 23
British Airways Logo
3:50 pm - 10:45 pmSEA-BCN
21h 55m2 stops
British Airways Logo
8:25 pm - 5:00 pmBCN-SEA
29h 35m2 stops
$649British Airways
Find Deal
mié., sep. 17 - lun., oct. 13
Lufthansa Logo
1:55 pm - 11:05 pmSEA-BCN
24h 10m2 stops
Lufthansa Logo
6:50 am - 6:36 pmBCN-SEA
20h 46m2 stops
$661Lufthansa
Find Deal
mié., sep. 17 - jue., sep. 25
Delta Logo
7:20 am - 7:15 amSEA-BCN
14h 55m1 stop
Delta Logo
9:00 am - 8:30 pmBCN-SEA
20h 30m2 stops
$687Delta
Find Deal
mar., ago. 12 - jue., sep. 25
British Airways Logo
3:13 pm - 5:15 pmSEA-BCN
17h 02m2 stops
British Airways Logo
7:10 pm - 11:10 amBCN-SEA
25h 00m1 stop
$701British Airways
Find Deal
dom., sep. 14 - lun., oct. 20
Delta Logo
11:35 pm - 9:20 amSEA-BCN
24h 45m1 stop
Delta Logo
9:00 am - 7:39 pmBCN-SEA
19h 39m1 stop
$742Delta
Find Deal
sáb., ago. 9 - mar., ago. 19
Lufthansa Logo
1:45 pm - 6:10 pmSEA-BCN
19h 25m2 stops
Lufthansa Logo
6:50 am - 10:16 pmBCN-SEA
24h 26m2 stops
$757Lufthansa
Find Deal
jue., sep. 25 - dom., oct. 5

Lufthansa flights from Seattle to Barcelona-El Prat Airport

Our best Lufthansa deals on Seattle to Barcelona-El Prat Airport flight tickets
Lufthansa
Sep 17
SEA1:55 pmSeattle/Tacoma Intl
24h 10m
2 stops
BCN11:05 pmBarcelona-El Prat
Sep 25
BCN6:50 amBarcelona-El Prat
20h 46m
2 stops
SEA6:36 pmSeattle/Tacoma Intl
Lufthansa
Sep 25
SEA1:45 pmSeattle/Tacoma Intl
19h 25m
2 stops
BCN6:10 pmBarcelona-El Prat
Oct 5
BCN6:50 amBarcelona-El Prat
24h 26m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
Lufthansa
Aug 13
SEA6:50 pmSeattle/Tacoma Intl
14h 05m
1 stop
BCN5:55 pmBarcelona-El Prat
Sep 28
BCN7:50 amBarcelona-El Prat
18h 09m
1 stop
SEA4:59 pmSeattle/Tacoma Intl

Scandinavian Airlines flights from Seattle to Barcelona-El Prat Airport

Our best Scandinavian Airlines deals on Seattle to Barcelona-El Prat Airport flight tickets
Scandinavian Airlines
Aug 20
SEA4:00 pmSeattle/Tacoma Intl
17h 10m
1 stop
BCN6:10 pmBarcelona-El Prat
Sep 9
BCN7:00 pmBarcelona-El Prat
27h 50m
1 stop
SEA1:50 pmSeattle/Tacoma Intl
Scandinavian Airlines
Aug 27
SEA4:00 pmSeattle/Tacoma Intl
17h 10m
1 stop
BCN6:10 pmBarcelona-El Prat
Sep 9
BCN7:00 pmBarcelona-El Prat
27h 50m
1 stop
SEA1:50 pmSeattle/Tacoma Intl
Scandinavian Airlines
Aug 24
SEA4:00 pmSeattle/Tacoma Intl
17h 10m
1 stop
BCN6:10 pmBarcelona-El Prat
Sep 9
BCN7:00 pmBarcelona-El Prat
27h 50m
1 stop
SEA1:50 pmSeattle/Tacoma Intl

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 $668, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Barcelona-El Prat Airport from Seattle during February instead. Flights to Barcelona-El Prat Airport in February, while not as cheap as those in November, still average around $679.

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

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Monday when prices can be found for as low as $862. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,049. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

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

Flying to Barcelona-El Prat Airport from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $888 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $992 on average. Flights to Barcelona-El Prat Airport from Seattle at noon are generally more expensive because this time of day is more convenient for travelers’ 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 25 weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $904 when searching 25 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 $778 on momondo.

How have Seattle to Barcelona-El Prat Airport flight prices changed over time?

As of April 2025, prices for Seattle to Barcelona-El Prat Airport flights are approximately 5% 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

Best Price Found

$307

Fastest flight time

13h 10m

Direct flights

None
The best one-way flight to Barcelona-El Prat Airport from Seattle in the past 72 hours is $307. The best round-trip flight deal from Seattle to Barcelona-El Prat Airport found on momondo in the last 72 hours is $452.
The fastest flight from Seattle to Barcelona-El Prat Airport takes 13h 10m
There are no direct flights from Seattle to Barcelona-El Prat Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Barcelona-El Prat Airport.

  • How far is Seattle/Tacoma Intl to Barcelona-El Prat by plane?

    There are 5412.9 mi between Seattle/Tacoma Intl and Barcelona-El Prat. 13h 10m is a normal flight duration for this route.

  • 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 are refreshed on a daily basis.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 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
IcelandairPriceFrom $416Free CancellationRating
7.0
484 reviews
Search Icelandair flights
WestJetPriceFrom $445Free CancellationRating
7.2
2,818 reviews
Search WestJet flights
Scandinavian AirlinesPriceFrom $489Free CancellationRating
7.3
1,345 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom $502Free CancellationRating
7.0
1,068 reviews
Search Aer Lingus flights
IberiaPriceFrom $507Free CancellationRating
7.0
2,686 reviews
Search Iberia flights
KLMPriceFrom $568Free CancellationRating
7.8
1,333 reviews
Search KLM flights
British AirwaysPriceFrom $578Free CancellationRating
6.6
6,809 reviews
Search British Airways flights
LufthansaPriceFrom $581Free CancellationRating
6.7
7,030 reviews
Search Lufthansa flights
Air CanadaPriceFrom $582Free CancellationRating
7.0
9,198 reviews
Search Air Canada flights
American AirlinesPriceFrom $584Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Barcelona?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Barcelona. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to Barcelona with flexible booking policies on momondo?

Flights from Seattle to Barcelona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Barcelona?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Barcelona from Seattle.

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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