HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Sebastian

$998+ Cheap flights from Seattle (SEA) 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — EAS
abr. 5 — abr. 121
sáb. 4/5
sáb. 4/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to San Sebastian with Cheapflights

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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
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 Seattle to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Sebastian (EAS). 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 marzo 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,002
(Mytrip)
Provider with most accurate pricing for Seattle/Tacoma Intl-San Sebastián flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Sebastián flights.
Search Deals
From Seattle/Tacoma Intl to San Sebastián
Search Deals

Find flight deals from Seattle to San Sebastian

Cheapest flights from Seattle to San Sebastian
Explore the most affordable flight options available from Seattle to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 31, 2025.

This Iberia deal was found by Cheapflights users on 3/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/162:09 pmSEA - EAS
2 stops21h 41mIberia
sáb. 11/19:30 pmEAS - SEA
2 stops36h 23mIberia
Deal found 3/31$998
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/147:00 pmSEA - EAS
3 stops28h 30mMultiple Airlines
mié. 5/219:10 amEAS - SEA
2 stops20h 18mMultiple Airlines
Deal found 3/30$1,002
This American Airlines deal was found by Cheapflights users on 3/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/1312:24 amSEA - EAS
2 stops23h 16mAmerican Airlines
mié. 5/211:40 pmEAS - SEA
2 stops20h 05mAmerican Airlines
Deal found 3/30$1,334

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle 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 marzo 31, 2025.
Use the filters below to find and compare flights from Seattle to San Sebastian that are best for you.

Fly from

Seattle

Fly to

San Sebastian

Route

Depart

Return

Price

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

mié. 5/14

7:00 pm-8:30 am

3 stops28h 30m

San Sebastián

mié. 5/21

9:10 am-8:28 pm

2 stops20h 18m

$1,002

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

mié. 5/14

1:54 pm-8:40 am

2 stops33h 46m

San Sebastián

mié. 5/21

9:30 pm-11:35 am

2 stops23h 05m

$1,236

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

mar. 5/13

12:24 am-8:40 am

2 stops23h 16m

San Sebastián

mié. 5/21

1:40 pm-12:45 am

2 stops20h 05m

$1,334

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

vie. 6/6

1:59 pm-8:50 pm

2 stops21h 51m

$1,192

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

  • Most accurate provider: When it comes to deals on Seattle-San Sebastian flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-San Sebastian flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-San Sebastian flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-San Sebastian flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-San Sebastian flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Seattle 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 Seattle to San Sebastian

What is the cheapest time of day to fly from SEA to EAS?

Find hourly flight availability from Seattle 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 marzo 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to San Sebastian as you normally would.

Reviews of airlines servicing San Sebastian

Get insights into the airlines that provide service to San Sebastian. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Sebastian. Reviews last updated marzo 31, 2025.
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Comfort

7.2

Entertainment

6.9

Overall

7.2

Food

6.5

Boarding

7.5

Reviews

1 / 20
6.0
Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Comfort

7.2

Entertainment

6.9

Overall

7.2

Food

6.5

Boarding

7.5

Reviews

1 / 20
6.0
Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation
Iberia
7.0
Good
2,653 reviews
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Comfort

7.2

Entertainment

6.9

Overall

7.2

Food

6.5

Boarding

7.5

Reviews

1 / 20
6.0
Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation

Related info for your journey

Find useful and relevant information for your journey from Seattle to San Sebastian. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Seattle to San Sebastian that include hotel bookings?

    Yes. In addition to deals on Seattle to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to San Sebastian?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San Sebastian.

  • Can I find deals for business class flights from Seattle to San Sebastian?

    Yes. Cheapflights offers flight deals from Seattle to San Sebastian by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to San Sebastian

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Bilbao flights
Portland to Bilbao flights
Pasco to Bilbao flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.