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Cheap flights from Washington to San Sebastian from $882

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to San Sebastian departing on 10/27. 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 Washington to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:31 am - 1:00 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
18h 29m2 stops Chicago O'Hare Intl Madrid Barajas
Multiple Airlines Logo
9:30 pm - 8:03 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
31h 33m2 stops Madrid Barajas Dallas/Fort Worth
$882Multiple Airlines
Tue, Oct 27 - Thu, Nov 5
Iberia Logo
6:45 pm - 8:50 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
17h 05m2 stops London Heathrow Madrid Barajas
Iberia Logo
6:10 pm - 11:25 amEAS  San Sebastián-SEA Seattle/Tacoma Intl
50h 15m2 stops Barcelona-El Prat London Heathrow
$936Iberia
Fri, Nov 6 - Sun, Nov 15
British Airways Logo
8:15 am - 1:00 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
19h 45m2 stops Dallas/Fort Worth Madrid Barajas
British Airways Logo
9:30 pm - 12:04 amEAS  San Sebastián-SEA Seattle/Tacoma Intl
35h 34m2 stops Madrid Barajas Los Angeles Los Angeles
$1,070British Airways
Mon, Dec 7 - Thu, Dec 10
Multiple Airlines Logo
7:45 am - 1:35 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
21h 50m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat
Multiple Airlines Logo
6:10 pm - 5:00 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
31h 50m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
$1,164Multiple Airlines
Tue, Oct 27 - Thu, Nov 5
British Airways Logo
7:30 am - 1:00 pmSEA  Seattle/Tacoma Intl-EAS San Sebastián
20h 30m2 stops Dallas/Fort Worth Madrid Barajas
British Airways Logo
9:30 pm - 8:25 pmEAS  San Sebastián-SEA Seattle/Tacoma Intl
31h 55m2 stops Madrid Barajas Chicago O'Hare Intl
$1,319British Airways
Wed, Nov 18 - Sun, Nov 22

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British Airways flights from State of Washington to San Sebastian

Our best British Airways deals on State of Washington to San Sebastian flight tickets
British Airways
Dec 7
SEA8:15 amSeattle/Tacoma Intl
19h 45m
2 stops
EAS1:00 pmSan Sebastián
Dec 10
EAS9:30 pmSan Sebastián
35h 34m
2 stops
SEA12:04 amSeattle/Tacoma Intl
$1,070
British Airways
Nov 18
SEA7:30 amSeattle/Tacoma Intl
20h 30m
2 stops
EAS1:00 pmSan Sebastián
Nov 22
EAS9:30 pmSan Sebastián
31h 55m
2 stops
SEA8:25 pmSeattle/Tacoma Intl
$1,319

momondo Fare Finder

 
Customize your flight search to find flights from State of 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, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Washington 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 Seattle/Tacoma Intl - EAS San Sebastián

SEAEAS

Seattle/Tacoma Intl

Tue 10/27

10:31 am-1:00 pm

2 stops18h 29m

San Sebastián

Thu 11/5

9:30 pm-8:03 pm

2 stops31h 33m

$882

SeattleSan Sebastian

SEA Seattle/Tacoma Intl - EAS San Sebastián

SEAEAS

Seattle/Tacoma Intl

Fri 11/6

6:45 pm-8:50 pm

2 stops17h 05m

San Sebastián

Sun 11/15

6:10 pm-11:25 am

2 stops50h 15m

$936

SeattleSan Sebastian

SEA Seattle/Tacoma Intl - EAS San Sebastián

SEAEAS

Seattle/Tacoma Intl

Mon 12/7

8:15 am-1:00 pm

2 stops19h 45m

San Sebastián

Thu 12/10

9:30 pm-12:04 am

2 stops35h 34m

$1,070

SeattleSan Sebastian

SEA Seattle/Tacoma Intl - EAS San Sebastián

SEAEAS

Seattle/Tacoma Intl

Tue 10/27

7:45 am-1:35 pm

3 stops21h 50m

San Sebastián

Thu 11/5

6:10 pm-5:00 pm

3 stops31h 50m

$1,164

SeattleSan Sebastian

SEA Seattle/Tacoma Intl - EAS San Sebastián

SEAEAS

Seattle/Tacoma Intl

Wed 11/18

7:30 am-1:00 pm

2 stops20h 30m

San Sebastián

Sun 11/22

9:30 pm-8:25 pm

2 stops31h 55m

$1,319

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 State of Washington 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 United Airlines are the top three most popular airlines that fly to San Sebastian from State of Washington according to our data. Lufthansa is the first choice among our users, with 57% 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.

Cheap State of Washington to San Sebastian flight deals and tips

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

Fastest flight time

17h 05m

Direct flights

None
The fastest flight from State of Washington to San Sebastian takes 17h 05m
There are no direct flights from State of Washington to San Sebastian. There are no popular flight routes from State of Washington to San Sebastian.
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Frequently asked questions about flying from Washington to San Sebastian

  • When did momondo last update prices for flights from Washington to San Sebastián Airport?

    Prices for flights from Washington to San Sebastián Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Washington 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 Washington 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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to San Sebastian for you.

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

All flight searches from Washington to San Sebastian on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Washington and San Sebastian by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to San Sebastian from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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