Cheap flights from Seattle to Barcelona-El Prat Airport from £284
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Seattle to Barcelona-El Prat
Cheapest flights from Seattle to Barcelona-El PratExplore the most affordable flight options available from Seattle to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 October 2026.
Explore the most affordable flight options available from Seattle to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 October 2026.
Best flights from Seattle to Barcelona-El PratDiscover carefully curated flight deals from Seattle to Barcelona-El Prat that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 October 2026.
Discover carefully curated flight deals from Seattle to Barcelona-El Prat that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 October 2026.
Last-minute flights from Seattle to Barcelona-El PratDiscover last-minute flight deals from Seattle to Barcelona-El Prat. Data last updated 6 October 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Barcelona-El Prat. Data last updated 6 October 2026 and is based on user searches.
One-way flights from Seattle to Barcelona-El PratSearch for one-way flight options from Seattle to Barcelona-El Prat. Find affordable one-way fares based on user searches. Data last updated 6 October 2026.
Search for one-way flight options from Seattle to Barcelona-El Prat. Find affordable one-way fares based on user searches. Data last updated 6 October 2026.
Find flight deals from Seattle to Barcelona-El Prat
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Barcelona-El Prat (BCN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 October 2026.
Cheapflights Fare Finder
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
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Fri 6/11
14:35-00:10
2 stops24h 35m
Barcelona-El Prat
Wed 31/12
00:00-15:00
Nonstop0h 00m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Wed 4/11
18:45-13:40
1 stop33h 55m
Barcelona-El Prat
Wed 31/12
00:00-15:00
Nonstop0h 00m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Tue 3/11
18:45-10:25
1 stop30h 40m
Barcelona-El Prat
Wed 31/12
00:00-15:00
Nonstop0h 00m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Sun 1/11
23:15-08:20
1 stop24h 05m
Barcelona-El Prat
Wed 31/12
00:00-15:00
Nonstop0h 00m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Thu 5/11
18:45-11:35
1 stop31h 50m
Barcelona-El Prat
Wed 31/12
00:00-15:00
Nonstop0h 00m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Sat 31/10
14:40-20:15
1 stop21h 35m
Barcelona-El Prat
Wed 31/12
00:00-15:00
Nonstop0h 00m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Thu 5/11
12:20-08:20
3 stops35h 00m
Barcelona-El Prat
Wed 31/12
00:00-15:00
Nonstop0h 00m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Mon 22/2
19:05-10:55
1 stop30h 50m
Barcelona-El Prat
Mon 12/4
14:35-17:20
1 stop35h 45m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Wed 18/11
19:05-17:15
1 stop37h 10m
Barcelona-El Prat
Mon 23/11
06:30-17:10
1 stop19h 40m
SeattleBarcelona
SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat
SEABCN
Seattle/Tacoma Intl
Thu 29/10
20:05-10:55
1 stop30h 50m
Barcelona-El Prat
Tue 24/11
12:20-17:10
1 stop37h 50m
Best time to book a flight from Seattle to Barcelona-El Prat
Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat from Seattle with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Barcelona-El Prat Airport
How far ahead should I book a flight from Seattle to Barcelona-El Prat Airport?
The price you pay for your flight from Seattle to Barcelona-El Prat Airport may vary depending on when you book. For the best chance of a lower fare, look to book 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Barcelona-El Prat Airport?
Currently, January is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of £363). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of £899). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to BCN?
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Barcelona-El Prat Airport as you normally would.
How often are flights from Seattle to Barcelona delayed?
About 8% of weekly flights between Seattle and Barcelona have experienced delays in the past year, with the average delay time being 192 minutes.
What is the most punctual flight time for Seattle to Barcelona flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Seattle to Barcelona flights?
Over the past year, Delta have had the lowest number of delays on this route, with just 8% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Barcelona-El Prat. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Barcelona-El Prat Airport?
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Other flights to Barcelona-El Prat
Explore flights to Barcelona-El Prat departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 6 October 2026.
Complete your trip
Complete your trip to Barcelona-El Prat by adding a car hire and/or hotel booking to your travel itinerary.
Direct flights to Catalonia
Book a non-stop flight to one of these other cities located in Catalonia.
Search flights from Seattle to Barcelona-El Prat by cabin class
Find flights from Seattle to Barcelona-El Prat, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Barcelona-El Prat flights
Browse other Seattle and Barcelona-El Prat flight options. Last updated on 6 October 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 6 October 2026.
Popular flight searches
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How does Cheapflights help users find flights from Seattle to Barcelona-El Prat?
When you search for this flight from Seattle to Barcelona-El Prat, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Barcelona-El Prat?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Barcelona-El Prat from Seattle.
Can Cheapflights find flights from Seattle to Barcelona-El Prat with no change fees?
Certainly. Search results for flights to Barcelona-El Prat from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Seattle to Barcelona-El Prat become cheaper?
Of course! You can now track prices for flights from Seattle to Barcelona-El Prat and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.