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Cheap flights from Washington, D.C. to San Sebastian from $386

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to San Sebastian departing on 8/3. 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

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Find the cheapest flights from Washington, D.C. to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:00 pm - 1:00 pm
IAD
-
EAS
14h 00m
1 stop
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$879Multiple Airlines
Mon, May 4 - Mon, May 11
Iberia Logo
5:59 pm - 1:00 pm
DCA
-
EAS
13h 01m
2 stops
Iberia Logo
9:20 am - 10:29 pm
EAS
-
DCA
19h 09m
2 stops
$882Iberia
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
6:25 am - 8:40 am
IAD
-
EAS
20h 15m
2 stops
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$883Multiple Airlines
Mon, May 4 - Mon, May 11
Iberia Logo
5:00 pm - 1:00 pm
IAD
-
EAS
14h 00m
1 stop
Iberia Logo
9:30 pm - 3:50 pm
EAS
-
IAD
24h 20m
2 stops
$888Iberia
Tue, May 5 - Tue, May 12
Iberia Logo
9:30 pm - 8:40 am
BWI
-
EAS
29h 10m
2 stops
Iberia Logo
9:30 pm - 7:40 pm
EAS
-
BWI
28h 10m
2 stops
$891Iberia
Tue, May 5 - Tue, May 12
Iberia Logo
10:25 pm - 8:40 am
IAD
-
EAS
28h 15m
2 stops
Iberia Logo
9:30 pm - 3:50 pm
EAS
-
IAD
24h 20m
2 stops
$891Iberia
Tue, May 5 - Tue, May 12
American Airlines Logo
1:25 pm - 8:40 am
DCA
-
EAS
13h 15m
2 stops
American Airlines Logo
9:20 am - 9:30 pm
EAS
-
DCA
18h 10m
2 stops
$912American Airlines
Wed, May 13 - Fri, May 22
Iberia Logo
5:00 pm - 1:00 pm
IAD
-
EAS
14h 00m
1 stop
Iberia Logo
9:20 am - 3:30 pm
EAS
-
IAD
12h 10m
1 stop
$914Iberia
Tue, May 5 - Tue, May 12
American Airlines Logo
9:51 am - 8:40 am
BWI
-
EAS
16h 49m
2 stops
American Airlines Logo
9:20 am - 7:39 pm
EAS
-
BWI
16h 19m
2 stops
$938American Airlines
Wed, May 6 - Wed, May 13
American Airlines Logo
9:51 am - 8:40 am
BWI
-
EAS
16h 49m
2 stops
American Airlines Logo
9:20 am - 7:30 pm
EAS
-
BWI
16h 10m
2 stops
$1,249American Airlines
Wed, May 13 - Fri, May 22

Iberia flights from Washington, D.C. to San Sebastian

Our best Iberia deals on Washington, D.C. to San Sebastian flight tickets
Iberia
May 5
DCA5:59 pmWashington, D.C. Reagan-National
13h 01m
2 stops
EAS1:00 pmSan Sebastián
May 12
EAS9:20 amSan Sebastián
19h 09m
2 stops
DCA10:29 pmWashington, D.C. Reagan-National
$882
Iberia
May 5
IAD5:00 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
EAS1:00 pmSan Sebastián
May 12
EAS9:30 pmSan Sebastián
24h 20m
2 stops
IAD3:50 pmWashington, D.C. Dulles Intl
$888
Iberia
May 5
BWI9:30 pmBaltimore/Washington
29h 10m
2 stops
EAS8:40 amSan Sebastián
May 12
EAS9:30 pmSan Sebastián
28h 10m
2 stops
BWI7:40 pmBaltimore/Washington
$891

American Airlines flights from Washington, D.C. to San Sebastian

Our best American Airlines deals on Washington, D.C. to San Sebastian flight tickets
American Airlines
May 13
DCA1:25 pmWashington, D.C. Reagan-National
13h 15m
2 stops
EAS8:40 amSan Sebastián
May 22
EAS9:20 amSan Sebastián
18h 10m
2 stops
DCA9:30 pmWashington, D.C. Reagan-National
$912
American Airlines
May 6
BWI9:51 amBaltimore/Washington
16h 49m
2 stops
EAS8:40 amSan Sebastián
May 13
EAS9:20 amSan Sebastián
16h 19m
2 stops
BWI7:39 pmBaltimore/Washington
$938
American Airlines
May 13
BWI9:51 amBaltimore/Washington
16h 49m
2 stops
EAS8:40 amSan Sebastián
May 22
EAS9:20 amSan Sebastián
16h 10m
2 stops
BWI7:30 pmBaltimore/Washington
$1,249

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 March 24, 2026.
Use the filters below to find and compare flights from Washington, D.C. to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 5/4

5:00 pm-1:00 pm

1 stop14h 00m

San Sebastián

Mon 5/11

9:30 pm-3:30 pm

1 stop24h 00m

$879

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Tue 5/5

5:59 pm-1:00 pm

2 stops13h 01m

San Sebastián

Tue 5/12

9:20 am-10:29 pm

2 stops19h 09m

$882

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 5/4

6:25 am-8:40 am

2 stops20h 15m

San Sebastián

Mon 5/11

9:30 pm-3:30 pm

1 stop24h 00m

$883

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Tue 5/5

5:00 pm-1:00 pm

1 stop14h 00m

San Sebastián

Tue 5/12

9:30 pm-3:50 pm

2 stops24h 20m

$888

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Tue 5/5

9:30 pm-8:40 am

2 stops29h 10m

San Sebastián

Tue 5/12

9:30 pm-7:40 pm

2 stops28h 10m

$891

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Tue 5/5

10:25 pm-8:40 am

2 stops28h 15m

San Sebastián

Tue 5/12

9:30 pm-3:50 pm

2 stops24h 20m

$891

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Wed 5/13

1:25 pm-8:40 am

2 stops13h 15m

San Sebastián

Fri 5/22

9:20 am-9:30 pm

2 stops18h 10m

$912
Quickest round-trip

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Tue 5/5

5:00 pm-1:00 pm

1 stop14h 00m

San Sebastián

Tue 5/12

9:20 am-3:30 pm

1 stop12h 10m

$914

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Wed 5/6

9:51 am-8:40 am

2 stops16h 49m

San Sebastián

Wed 5/13

9:20 am-7:39 pm

2 stops16h 19m

$938

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Wed 5/13

9:51 am-8:40 am

2 stops16h 49m

San Sebastián

Fri 5/22

9:20 am-7:30 pm

2 stops16h 10m

$1,249

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Sebastian from

How to get the cheapest flight ticket from Washington, D.C. 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 is the cheapest airline that flies from Washington, D.C. to San Sebastián?

British Airways, American Airlines, and Iberia are the most popular carriers operating from Washington, D.C. to San Sebastián

What airlines fly to San Sebastian?

Iberia, United Airlines and Lufthansa are the top three most popular airlines that fly to San Sebastian from Washington, D.C. according to our data. Iberia is the first choice among our users, with 29% 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 Washington, D.C. to San Sebastian

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

Cheap Washington, D.C. to San Sebastian (WAS to EAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to San Sebastian

Fastest flight time

13h 15m

Direct flights

None
The fastest flight from Washington, D.C. to San Sebastian takes 13h 15m
There are no direct flights from Washington, D.C. to San Sebastian. There are no popular flight routes from Washington, D.C. to San Sebastian.
Search flight deals

  • How far is Washington, D.C. to San Sebastián by plane?

    The straight-line distance from Washington, D.C. to San Sebastián is 3781.9 mi. 13h 15m is a normal flight duration for this route.

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

    Prices for flights from Washington, D.C. to San Sebastián Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to San Sebastián Airport?

  • How old do you have to be to fly from Washington, D.C. to San Sebastián Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to San Sebastián Airport.

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

    The travel and health documents you'll need for your trip to San Sebastián Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Sebastián Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. to San Sebastian?

Best airlines flying from Washington, D.C. to San Sebastian

Compare and see reviews for airlines that fly from Washington, D.C. to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $561Free CancellationRating
7.0
3,150 reviews
Search Iberia flights

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, D.C. to San Sebastian?

Finding the right flight to San Sebastian from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Sebastian quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Washington, D.C. to San Sebastian flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to San Sebastian?

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

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

Yes momondo offers price alerts on flights to San Sebastian from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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