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Cheap flights from Washington to San Sebastian from $920

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 11/22. 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.
Iberia Logo
5:24 am - 8:40 am
SEA
-
EAS
18h 16m
2 stops
Iberia Logo
9:30 pm - 4:55 pm
EAS
-
SEA
52h 25m
2 stops
$920Iberia
Sun, Nov 22 - Sun, Nov 29
British Airways Logo
3:47 pm - 8:50 pm
SEA
-
EAS
44h 03m
2 stops
British Airways Logo
9:30 pm - 10:17 pm
EAS
-
SEA
33h 47m
2 stops
$1,153British Airways
Sat, Aug 15 - Sat, Aug 22
Multiple Airlines Logo
11:40 am - 8:50 pm
SEA
-
EAS
24h 10m
2 stops
Multiple Airlines Logo
9:30 pm - 11:21 pm
EAS
-
SEA
34h 51m
2 stops
$1,237Multiple Airlines
Thu, Aug 13 - Mon, Aug 17
Multiple Airlines Logo
11:25 pm - 8:20 am
SEA
-
EAS
23h 55m
3 stops
Multiple Airlines Logo
5:55 pm - 5:10 pm
EAS
-
SEA
32h 15m
3 stops
$1,239Multiple Airlines
Thu, Aug 13 - Mon, Aug 17
Multiple Airlines Logo
1:30 pm - 2:40 pm
SEA
-
EAS
16h 10m
1 stop
Multiple Airlines Logo
9:30 pm - 11:21 pm
EAS
-
SEA
34h 51m
2 stops
$1,244Multiple Airlines
Thu, Aug 13 - Mon, Aug 17
Iberia Logo
8:20 pm - 8:40 am
SEA
-
EAS
27h 20m
2 stops
Iberia Logo
5:55 pm - 11:35 am
EAS
-
SEA
26h 40m
2 stops
$1,276Iberia
Mon, Jul 20 - Mon, Jul 27
Multiple Airlines Logo
7:00 pm - 8:20 am
SEA
-
EAS
28h 20m
3 stops
Multiple Airlines Logo
5:55 pm - 8:40 pm
EAS
-
SEA
35h 45m
3 stops
$1,297Multiple Airlines
Mon, Jul 20 - Mon, Jul 27
Iberia Logo
8:20 pm - 8:40 am
SEA
-
EAS
27h 20m
2 stops
Iberia Logo
5:55 pm - 11:35 am
EAS
-
SEA
26h 40m
2 stops
$1,311Iberia
Sun, Aug 9 - Sun, Aug 16
Multiple Airlines Logo
3:40 pm - 8:20 am
SEA
-
EAS
31h 40m
3 stops
Multiple Airlines Logo
8:55 am - 8:40 pm
EAS
-
SEA
20h 45m
3 stops
$1,317Multiple Airlines
Sat, Aug 15 - Sat, Aug 22
Multiple Airlines Logo
5:40 pm - 8:20 am
SEA
-
EAS
29h 40m
3 stops
Multiple Airlines Logo
5:55 pm - 4:10 pm
EAS
-
SEA
31h 15m
3 stops
$1,395Multiple Airlines
Sun, Aug 9 - Sun, Aug 16

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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
Aug 15
SEA3:47 pmSeattle/Tacoma Intl
44h 03m
2 stops
EAS8:50 pmSan Sebastián
Aug 22
EAS9:30 pmSan Sebastián
33h 47m
2 stops
SEA10:17 pmSeattle/Tacoma Intl
$1,153
British Airways
Aug 13
SEA1:30 pmSeattle/Tacoma Intl
16h 10m
1 stop
EAS2:40 pmSan Sebastián
Aug 17
EAS6:00 pmSan Sebastián
26h 35m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$1,496

Iberia flights from State of Washington to San Sebastian

Our best Iberia deals on State of Washington to San Sebastian flight tickets
Iberia
Nov 22
SEA5:24 amSeattle/Tacoma Intl
18h 16m
2 stops
EAS8:40 amSan Sebastián
Nov 29
EAS9:30 pmSan Sebastián
52h 25m
2 stops
SEA4:55 pmSeattle/Tacoma Intl
$920
Iberia
Jul 20
SEA8:20 pmSeattle/Tacoma Intl
27h 20m
2 stops
EAS8:40 amSan Sebastián
Jul 27
EAS5:55 pmSan Sebastián
26h 40m
2 stops
SEA11:35 amSeattle/Tacoma Intl
$1,276
Iberia
Aug 9
SEA8:20 pmSeattle/Tacoma Intl
27h 20m
2 stops
EAS8:40 amSan Sebastián
Aug 16
EAS5:55 pmSan Sebastián
26h 40m
2 stops
SEA11:35 amSeattle/Tacoma Intl
$1,311

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 June 26, 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

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sun 11/22

5:24 am-8:40 am

2 stops18h 16m

San Sebastián

Sun 11/29

9:30 pm-4:55 pm

2 stops52h 25m

$920

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sat 8/15

3:47 pm-8:50 pm

2 stops44h 03m

San Sebastián

Sat 8/22

9:30 pm-10:17 pm

2 stops33h 47m

$1,153

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Thu 8/13

11:40 am-8:50 pm

2 stops24h 10m

San Sebastián

Mon 8/17

9:30 pm-11:21 pm

2 stops34h 51m

$1,237

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Thu 8/13

11:25 pm-8:20 am

3 stops23h 55m

San Sebastián

Mon 8/17

5:55 pm-5:10 pm

3 stops32h 15m

$1,239
Quickest round-trip

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Thu 8/13

1:30 pm-2:40 pm

1 stop16h 10m

San Sebastián

Mon 8/17

9:30 pm-11:21 pm

2 stops34h 51m

$1,244

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Mon 7/20

8:20 pm-8:40 am

2 stops27h 20m

San Sebastián

Mon 7/27

5:55 pm-11:35 am

2 stops26h 40m

$1,276

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Mon 7/20

7:00 pm-8:20 am

3 stops28h 20m

San Sebastián

Mon 7/27

5:55 pm-8:40 pm

3 stops35h 45m

$1,297

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sun 8/9

8:20 pm-8:40 am

2 stops27h 20m

San Sebastián

Sun 8/16

5:55 pm-11:35 am

2 stops26h 40m

$1,311

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sat 8/15

3:40 pm-8:20 am

3 stops31h 40m

San Sebastián

Sat 8/22

8:55 am-8:40 pm

3 stops20h 45m

$1,317

SeattleSan Sebastian

SEA - EAS

SEAEAS

Seattle/Tacoma Intl

Sun 8/9

5:40 pm-8:20 am

3 stops29h 40m

San Sebastián

Sun 8/16

5:55 pm-4:10 pm

3 stops31h 15m

$1,395

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 KLM 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 51% 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

25h 25m

Direct flights

None
The fastest flight from State of Washington to San Sebastian takes 25h 25m
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.
Search flight deals

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
Hondarribia

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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