SEA - EAS

$625 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
$1,076
Typical prices: $583-$1,122
Iberia
Wed 12/12Wed 12/19
SEA - EAS • 2 stops
Cheapest one-way
$625
Typical prices: $554-$1,079
British Airways
Sun 12/16
SEA - EAS • 2 stops
When to travel
April
Cheapest • 48% price drop
April
Most popular
Good to know
+1
Good to know
+1
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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

Sat, Dec 12 - Sat, Dec 19
Iberia Logo
6:45 pm - 1:00 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
33h 15m2 stops London Heathrow Madrid Barajas
Iberia Logo
9:30 pm - 11:59 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
35h 29m2 stops Madrid Barajas Dallas/Fort Worth
$1,076Iberia
Fri, Apr 23 - Tue, Apr 27
British Airways Logo
5:44 am - 8:50 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
30h 06m2 stops Dallas/Fort Worth Madrid Barajas
British Airways Logo
9:30 pm - 11:28 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
34h 58m2 stops Madrid Barajas Dallas/Fort Worth
$1,123British Airways
Sat, Dec 12 - Sat, Dec 19
Multiple Airlines Logo
7:45 am - 3:25 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
22h 40m3 stops Toronto Pearson Intl Frankfurt am Main Florence Peretola
Multiple Airlines Logo
2:10 pm - 5:10 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
36h 00m3 stops Barcelona-El Prat Rome Fiumicino Istanbul
$1,503Multiple Airlines
Sat, Dec 12 - Sat, Dec 19
Multiple Airlines Logo
10:10 am - 5:35 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
22h 25m3 stops Vancouver Intl Frankfurt am Main Barcelona-El Prat
Multiple Airlines Logo
9:10 pm - 1:00 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
24h 50m2 stops Barcelona-El Prat Munich Franz Josef Strauss
$1,541Multiple 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 with more confidence.

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

Round-trip flights from Seattle to San Sebastian typically range from $583 to $1,122. The lowest price found in the past 5 days was $1,076, on Iberia.

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Key details for Seattle to San Sebastian flights

Cheapest flight

$625
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

  • 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.

  • 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.

  • 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.

  • 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 varied from about $1,076 to $1,541. That means the highest observed fare was about 43% 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 higher than usual. Average one-way flight prices are about $1,232, which is 64% above the typical average for this route.

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

    San Sebastián Airport (EAS) hosts 5 major car rental companies, with daily rates averaging $55 for economy cars. Top options include:

    • Enterprise Rent-A-Car
    • Hertz
    • Alamo
    • keddy by Europcar
    • Dollar

  • 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).

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

    Yes. Flexible dates can save you up to 54% on flights from Seattle to San Sebastian. 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 is the time difference between Seattle and San Sebastian?

    San Sebastian is 8 hours ahead of Seattle (Central European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • 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.

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 are flexible, aim for a Tuesday departure and avoid flying on Sunday. On this route, Tuesday flights average $543, about $637 less than Sunday fares (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