SEA - EAS

$408 Find Cheap Flights from Seattle to San Sebastian - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$854
Typical prices: $583-$1,122
British Airways
Sat 10/13Sat 10/20
SEA - EAS • 2 stops
Cheapest one-way
$408
Typical prices: $522-$712
Multiple Airlines
Sun 10/14
SEA - EAS • 3 stops
When to travel
April
Cheapest • 48% price drop
April
Most popular
Good to know
+1
Good to know
+1
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Booking Insights
Flight Deals

Cheap Flights from Seattle to San Sebastian (SEA-EAS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to San Sebastian

Tue, Oct 13 - Tue, Oct 20
British Airways Logo
1:30 pm - 1:00 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
38h 30m2 stops London Heathrow Madrid Barajas
British Airways Logo
9:30 pm - 8:15 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
31h 45m2 stops Madrid Barajas Chicago O'Hare Intl
$854British Airways
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
7:00 pm - 8:35 amSEA  Seattle/Tacoma Intl-EAS San Sebastián
28h 35m3 stops Reykjavik Keflavik Intl London Gatwick Barcelona-El Prat
Multiple Airlines Logo
8:55 am - 8:40 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
20h 45m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
$899Multiple Airlines
Thu, Oct 29 - Thu, Nov 5
Iberia Logo
7:45 pm - 8:40 amSEA  Seattle/Tacoma Intl-EAS San Sebastián
28h 55m2 stops London Heathrow Madrid Barajas
Iberia Logo
6:10 pm - 4:50 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
31h 40m2 stops Barcelona-El Prat London Heathrow
$910Iberia
Sun, Dec 13 - Thu, Dec 31
Multiple Airlines Logo
11:34 pm - 1:00 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
28h 26m2 stops Chicago O'Hare Intl Madrid Barajas
Multiple Airlines Logo
9:20 am - 9:38 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
21h 18m2 stops Madrid Barajas Chicago O'Hare Intl
$1,052Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
7:00 pm - 8:35 amSEA  Seattle/Tacoma Intl-EAS San Sebastián
28h 35m3 stops Reykjavik Keflavik Intl London Gatwick Barcelona-El Prat
Multiple Airlines Logo
8:55 am - 8:40 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
20h 45m2 stops Barcelona-El Prat Reykjavik Keflavik Intl
$1,329Multiple Airlines
Sat, Oct 10 - Sat, Oct 17
British Airways Logo
1:30 pm - 4:10 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
17h 40m1 stop London Heathrow
British Airways Logo
9:30 pm - 11:35 amEAS  San Sebastián-SEA Seattle/Tacoma Intl
23h 05m2 stops Madrid Barajas London Heathrow
$1,451British Airways
Sat, Oct 10 - Sat, Oct 17
British Airways Logo
11:17 am - 4:10 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
19h 53m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
9:30 pm - 11:35 amEAS  San Sebastián-SEA Seattle/Tacoma Intl
23h 05m2 stops Madrid Barajas London Heathrow
$1,455British Airways
Thu, Oct 29 - Thu, Nov 5
Multiple Airlines Logo
8:05 pm - 1:35 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
33h 30m2 stops Istanbul Barcelona-El Prat
Multiple Airlines Logo
6:10 pm - 5:00 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
31h 50m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
$1,687Multiple Airlines
Sun, Dec 13 - Thu, Dec 31
Multiple Airlines Logo
7:45 am - 1:35 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
20h 50m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat
Multiple Airlines Logo
6:10 pm - 5:00 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
31h 50m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
$1,850Multiple Airlines
Sun, Dec 13 - Thu, Dec 31
Multiple Airlines Logo
7:45 am - 1:35 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
20h 50m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat
Multiple Airlines Logo
6:10 pm - 1:00 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
27h 50m2 stops Barcelona-El Prat Munich Franz Josef Strauss
$2,532Multiple Airlines
Booking Insights

Price, demand and travel trends for Seattle to San Sebastian flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Seattle to San Sebastian with more confidence.

How much is a round-trip flight from Seattle to San Sebastian?

Round-trip flights from Seattle to San Sebastian start at $854. Prices are typical for this route right now, with typical round-trip fares ranging from $583 to $1,122. The lowest price found in the past 5 days was $854 on British Airways.

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Key details for Seattle to San Sebastian flights

Low season

November

Cheapest flight

$408
Most popular time to fly and prices are also 48% lower on average.
Flight from Seattle to San Sebastian

When to book flights from Seattle to San Sebastian

Are your dates flexible? Find out the best times to travel from Seattle to San Sebastian based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to San Sebastian flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Seattle to San Sebastian?

    Flights from Seattle to San Sebastian usually depart from Seattle/Tacoma Intl (SEA) and arrive at San Sebastián (EAS).

  • What cabin classes can I book on flights from Seattle to San Sebastian?

    Only Economy Class is available on flights from Seattle to San Sebastian.

  • Can I save money by using flexible dates for flights from Seattle to San Sebastian?

    Yes. Being flexible with your travel dates can save you up to 54% on the Seattle to San Sebastian route. Tuesday is the cheapest departure day at $543 round-trip on average, while Sunday is the most expensive at $1,180, a difference of $637. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in San Sebastian?

    Some of the most popular sights in San Sebastian are Playa de Zurriola, Kursaal Palace San Sebastián and Palacio de Miramar. These are among the most viewed places in San Sebastian on KAYAK.

  • Do I need a passport to fly from Seattle to San Sebastian?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Seattle to San Sebastian changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $854 to $2,532. That means the highest observed fare was about 3x higher than the lowest one.

  • How are flight prices from Seattle to San Sebastian looking right now?

    One-way fares from Seattle to San Sebastian are currently lower than usual. Average one-way flight prices are about $448, which is 38% below the typical average for this route.

  • What is the time difference between Seattle and San Sebastian?

    San Sebastian is 9 hours ahead of Seattle (Central European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at San Sebastián Airport (EAS)?

    San Sebastián Airport (EAS) hosts 5 major car rental companies, with daily rates starting from around $13 for economy cars. Top options include:
    • Enterprise Rent-A-Car
    • Alamo
    • Hertz
    • keddy by Europcar
    • Europcar

  • How much should I expect to pay for a Seattle to San Sebastian flight?

    Round-trip flights from Seattle to San Sebastian range from $583 to $1,122, with an average of $1,054 over the past 12 months. Anything below $583 counts as a good deal.

Your guide to booking Seattle to San Sebastian flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Sunday. On this route, Tuesday flights average $543 - about $637 less than Sunday (54% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Seattle to San Sebastian trip for April. Fares historically average $543 round-trip in that month - typically $659 less than the most expensive month, which is July (based on the last 12 months).

More options for your flight from Seattle to San Sebastian

Complete your trip to San Sebastian with a hotel stay or car rental

Car rentals in San Sebastian
Hotels in San Sebastian
Vacations in San Sebastian