Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Seattle to San Sebastian from $583

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to San Sebastian departing on 2/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
7:15 am - 1:00 pm
SEA
-
EAS
20h 45m2 stops
Iberia Logo
9:20 am - 9:24 pm
EAS
-
SEA
21h 04m2 stops
$583Iberia
Tue, Feb 17 - Tue, Feb 24
Iberia Logo
8:35 am - 8:50 pm
SEA
-
EAS
27h 15m2 stops
Iberia Logo
9:30 pm - 9:47 pm
EAS
-
SEA
33h 17m2 stops
$822Iberia
Fri, Jan 30 - Tue, Feb 3
Iberia Logo
1:30 pm - 8:50 pm
SEA
-
EAS
22h 20m2 stops
Iberia Logo
9:20 am - 11:39 pm
EAS
-
SEA
23h 19m2 stops
$1,013Iberia
Thu, May 21 - Wed, May 27
Iberia Logo
8:04 am - 8:50 pm
SEA
-
EAS
27h 46m2 stops
Iberia Logo
9:30 pm - 9:47 pm
EAS
-
SEA
33h 17m2 stops
$1,069Iberia
Fri, Jan 30 - Tue, Feb 3
British Airways Logo
2:05 pm - 4:10 pm
SEA
-
EAS
41h 05m2 stops
British Airways Logo
4:55 pm - 11:43 pm
EAS
-
SEA
39h 48m2 stops
$5,504British Airways
Fri, May 15 - Sun, May 24
British Airways Logo
2:05 pm - 4:10 pm
SEA
-
EAS
41h 05m2 stops
British Airways Logo
4:55 pm - 6:25 pm
EAS
-
SEA
34h 30m1 stop
$6,152British Airways
Fri, May 15 - Sun, May 24
British Airways Logo
8:20 pm - 4:10 pm
SEA
-
EAS
34h 50m1 stop
British Airways Logo
4:55 pm - 6:25 pm
EAS
-
SEA
34h 30m1 stop
$6,805British Airways
Fri, May 15 - Sun, May 24

Iberia flights from Seattle to San Sebastian

Our best Iberia deals on Seattle to San Sebastian flight tickets
Iberia
Feb 17
SEA7:15 amSeattle/Tacoma Intl
20h 45m
2 stops
EAS1:00 pmSan Sebastián
Feb 24
EAS9:20 amSan Sebastián
21h 04m
2 stops
SEA9:24 pmSeattle/Tacoma Intl
$583
Find similar
Iberia
Jan 30
SEA8:35 amSeattle/Tacoma Intl
27h 15m
2 stops
EAS8:50 pmSan Sebastián
Feb 3
EAS9:30 pmSan Sebastián
33h 17m
2 stops
SEA9:47 pmSeattle/Tacoma Intl
$822
Find similar
Iberia
May 21
SEA1:30 pmSeattle/Tacoma Intl
22h 20m
2 stops
EAS8:50 pmSan Sebastián
May 27
EAS9:20 amSan Sebastián
23h 19m
2 stops
SEA11:39 pmSeattle/Tacoma Intl
$1,013
Find similar

British Airways flights from Seattle to San Sebastian

Our best British Airways deals on Seattle to San Sebastian flight tickets
British Airways
May 15
SEA2:05 pmSeattle/Tacoma Intl
41h 05m
2 stops
EAS4:10 pmSan Sebastián
May 24
EAS4:55 pmSan Sebastián
39h 48m
2 stops
SEA11:43 pmSeattle/Tacoma Intl
$5,504
Find similar
British Airways
May 15
SEA2:05 pmSeattle/Tacoma Intl
41h 05m
2 stops
EAS4:10 pmSan Sebastián
May 24
EAS4:55 pmSan Sebastián
34h 30m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$6,152
Find similar
British Airways
May 15
SEA8:20 pmSeattle/Tacoma Intl
34h 50m
1 stop
EAS4:10 pmSan Sebastián
May 24
EAS4:55 pmSan Sebastián
34h 30m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$6,805
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated January 5, 2026.
Use the filters below to find and compare flights from Seattle to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Tue 2/17

7:15 am-1:00 pm

2 stops20h 45m

San Sebastián

Tue 2/24

9:20 am-9:24 pm

2 stops21h 04m

$583

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Fri 1/30

8:35 am-8:50 pm

2 stops27h 15m

San Sebastián

Tue 2/3

9:30 pm-9:47 pm

2 stops33h 17m

$822

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Thu 5/21

1:30 pm-8:50 pm

2 stops22h 20m

San Sebastián

Wed 5/27

9:20 am-11:39 pm

2 stops23h 19m

$1,013

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Fri 1/30

8:04 am-8:50 pm

2 stops27h 46m

San Sebastián

Tue 2/3

9:30 pm-9:47 pm

2 stops33h 17m

$1,069

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Fri 5/15

2:05 pm-4:10 pm

2 stops41h 05m

San Sebastián

Sun 5/24

4:55 pm-11:43 pm

2 stops39h 48m

$5,504

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Fri 5/15

2:05 pm-4:10 pm

2 stops41h 05m

San Sebastián

Sun 5/24

4:55 pm-6:25 pm

1 stop34h 30m

$6,152

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Fri 5/15

8:20 pm-4:10 pm

1 stop34h 50m

San Sebastián

Sun 5/24

4:55 pm-6:25 pm

1 stop34h 30m

$6,805

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to San Sebastian from

How to get the cheapest flight ticket from Seattle to San Sebastian

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to San Sebastian?

Lufthansa, Delta and KLM are the top three most popular airlines that fly to San Sebastian from Seattle according to our data. Lufthansa is the first choice among our users, with 42% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 4 different airlines that fly to San Sebastian on a routine basis, so you have a few additional options to choose from.

When to book flights from Seattle to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to San Sebastian according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to San Sebastian (SEA to EAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Sebastian

Fastest flight time

17h 00m

Direct flights

None
The fastest flight from Seattle to San Sebastian takes 17h 00m
There are no direct flights from Seattle to San Sebastian. There are no popular flight routes from Seattle to San Sebastian.
Search flight deals

  • How far is Seattle/Tacoma Intl to San Sebastián by plane?

    Seattle/Tacoma Intl and San Sebastián are 5178.8 mi apart from one another. Flights usually cover this in 17h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Sebastián Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to San Sebastián Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Sebastián Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to San Sebastián Airport.

  • What documentation or ID do you need to fly to San Sebastián Airport?

    The travel and health documents required for your trip to San Sebastián Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Sebastián Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near San Sebastian?

Book flights to San Sebastian if you plan to visit one of these locations
Irun
Hondarribia

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San Sebastian?

It is quick and easy to find Seattle to San Sebastian flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Sebastian that suits you.

Can I find flights from Seattle to San Sebastian with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Sebastian from Seattle with this policy.

How can momondo help me find flights from Seattle to San Sebastian?

momondo provides multiple filters to help you find the best flight to San Sebastian from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to San Sebastian right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to San Sebastian flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your San Sebastian trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 2/4
Wed 2/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Spain

Airports servicing Basque Country

Bilbao Airport