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Cheap flights from Seattle to San Sebastian from $1,087

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 10/20. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
8:15 am - 1:00 pm
SEA
-
EAS
19h 45m
2 stops
Iberia Logo
1:40 pm - 12:10 am
EAS
-
SEA
19h 30m
2 stops
$1,087Iberia
Tue, Oct 20 - Thu, Oct 22
Iberia Logo
1:30 pm - 5:20 pm
SEA
-
EAS
18h 50m
2 stops
Iberia Logo
9:30 pm - 9:57 pm
EAS
-
SEA
33h 27m
2 stops
$1,095Iberia
Tue, Oct 20 - Thu, Oct 22
Multiple Airlines Logo
1:30 pm - 8:50 pm
SEA
-
EAS
22h 20m
2 stops
Multiple Airlines Logo
1:40 pm - 12:10 am
EAS
-
SEA
19h 30m
2 stops
$1,232Multiple Airlines
Fri, Sep 11 - Fri, Oct 23
Iberia Logo
1:30 pm - 5:20 pm
SEA
-
EAS
18h 50m
2 stops
Iberia Logo
8:55 am - 11:35 am
EAS
-
SEA
35h 40m
2 stops
$1,373Iberia
Sun, Aug 9 - Sun, Aug 16
Iberia Logo
1:30 pm - 5:20 pm
SEA
-
EAS
18h 50m
2 stops
Iberia Logo
6:00 pm - 11:35 am
EAS
-
SEA
26h 35m
2 stops
$1,394Iberia
Tue, Oct 20 - Thu, Oct 22
Multiple Airlines Logo
2:10 pm - 8:20 am
SEA
-
EAS
33h 10m
3 stops
Multiple Airlines Logo
8:55 am - 10:40 am
EAS
-
SEA
34h 45m
3 stops
$1,503Multiple Airlines
Sun, Aug 9 - Sun, Aug 16
Multiple Airlines Logo
7:10 pm - 8:20 am
SEA
-
EAS
28h 10m
2 stops
Multiple Airlines Logo
8:55 am - 10:40 am
EAS
-
SEA
34h 45m
3 stops
$1,534Multiple Airlines
Sun, Aug 9 - Sun, Aug 16

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Iberia flights from Seattle to San Sebastian

Our best Iberia deals on Seattle to San Sebastian flight tickets
Iberia
Oct 20
SEA8:15 amSeattle/Tacoma Intl
19h 45m
2 stops
EAS1:00 pmSan Sebastián
Oct 22
EAS1:40 pmSan Sebastián
19h 30m
2 stops
SEA12:10 amSeattle/Tacoma Intl
$1,087
Iberia
Oct 20
SEA1:30 pmSeattle/Tacoma Intl
18h 50m
2 stops
EAS5:20 pmSan Sebastián
Oct 22
EAS9:30 pmSan Sebastián
33h 27m
2 stops
SEA9:57 pmSeattle/Tacoma Intl
$1,095
Iberia
Aug 9
SEA1:30 pmSeattle/Tacoma Intl
18h 50m
2 stops
EAS5:20 pmSan Sebastián
Aug 16
EAS8:55 amSan Sebastián
35h 40m
2 stops
SEA11:35 amSeattle/Tacoma Intl
$1,373

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 July 13, 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

Cheapest round-trip
Quickest round-trip

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Tue 10/20

8:15 am-1:00 pm

2 stops19h 45m

San Sebastián

Thu 10/22

1:40 pm-12:10 am

2 stops19h 30m

$1,087

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Tue 10/20

1:30 pm-5:20 pm

2 stops18h 50m

San Sebastián

Thu 10/22

9:30 pm-9:57 pm

2 stops33h 27m

$1,095

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Fri 9/11

1:30 pm-8:50 pm

2 stops22h 20m

San Sebastián

Fri 10/23

1:40 pm-12:10 am

2 stops19h 30m

$1,232

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sun 8/9

1:30 pm-5:20 pm

2 stops18h 50m

San Sebastián

Sun 8/16

8:55 am-11:35 am

2 stops35h 40m

$1,373

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Tue 10/20

1:30 pm-5:20 pm

2 stops18h 50m

San Sebastián

Thu 10/22

6:00 pm-11:35 am

2 stops26h 35m

$1,394

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sun 8/9

2:10 pm-8:20 am

3 stops33h 10m

San Sebastián

Sun 8/16

8:55 am-10:40 am

3 stops34h 45m

$1,503

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sun 8/9

7:10 pm-8:20 am

2 stops28h 10m

San Sebastián

Sun 8/16

8:55 am-10:40 am

3 stops34h 45m

$1,534
Cheapest one-way
Quickest one-way

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sun 8/9

7:00 am-8:40 am

2 stops16h 40m

$2,525

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 55% 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

22h 20m

Direct flights

None
The fastest flight from Seattle to San Sebastian takes 22h 20m
There are no direct flights from Seattle to San Sebastian. There are no popular flight routes from Seattle to San Sebastian.
Search flight deals

Frequently asked questions about flying from Seattle to San Sebastian

  • 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 22h 20m, 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

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