$1,289+ Cheap flights from Washington to San Sebastian (EAS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — EAS
nov. 29 — dic. 61
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington to San Sebastian
Keep the following information in mind while searching for Washington to San Sebastian flight deals. Data was last updated octubre 30, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $1,289 (Ovago) |
Find flight deals from Washington to San Sebastian
Cheapest flights from Washington to San SebastianExplore the most affordable flight options available from Washington to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.
Explore the most affordable flight options available from Washington to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.
This Travelocity deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/259:29 pmSEA - EAS
2 stops30h 31mMultiple Airlines
jue. 1/19:30 pmEAS - SEA
2 stops35h 32mMultiple Airlines
Deal found 10/29![Multiple Airlines logo]()
$2,028
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/3112:03 pmSEA - EAS
2 stops24h 47mAmerican Airlines
mar. 11/41:40 pmEAS - SEA
2 stops42h 38mAmerican Airlines
Deal found 10/28![American Airlines logo]()
$2,142
This Orbitz deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/279:20 pmSEA - EAS
2 stops26h 20mMultiple Airlines
sáb. 1/32:05 pmEAS - SEA
2 stops60h 00mMultiple Airlines
Deal found 10/30![Multiple Airlines logo]()
$2,474
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to San Sebastian 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, Cheapflights users made 2,558,603 searches. Data last updated octubre 30, 2025.
Use the filters below to find and compare flights from Washington to San Sebastian that are best for you.
Fly from
Washington
Fly to
San Sebastian
Route
Depart
Return
Price
SeattleSan Sebastian
SEA - EAS
SEAEAS
Seattle/Tacoma Intl
vie. 4/3
1:48 pm-8:40 am
2 stops33h 52m
San Sebastián
sáb. 4/18
9:20 am-9:54 pm
2 stops21h 34m
$1,289
SeattleSan Sebastian
SEA - EAS
SEAEAS
Seattle/Tacoma Intl
jue. 12/25
9:29 pm-1:00 pm
2 stops30h 31m
San Sebastián
jue. 1/1
9:30 pm-12:02 am
2 stops35h 32m
$2,028
SeattleSan Sebastian
SEA - EAS
SEAEAS
Seattle/Tacoma Intl
sáb. 12/27
9:20 pm-8:40 am
2 stops26h 20m
San Sebastián
sáb. 1/3
2:05 pm-5:05 pm
2 stops60h 00m
$2,474
Best time to book a flight from Washington to San Sebastian
Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to San Sebastian
What is the cheapest month to book a flight from State of Washington to San Sebastian?
Currently, October is the cheapest month in which you can book a flight from State of Washington to San Sebastian (average of $505). Flying from State of Washington to San Sebastian in June is currently the most expensive (average of $1,288). 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 WA to EAS?
Find hourly flight availability from Washington to San Sebastian. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 30, 2025.
It’s typically best to fly out from State of Washington to San Sebastian at noon. Doing so could potentially save you 41% on the flight price compared to flying in the morning, which is usually more expensive.