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Cheap flights from Washington, D.C. Dulles Intl Airport to San Sebastian from $504

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, D.C. Dulles Intl Airport to San Sebastian departing on 2/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 pm - 8:50 pm
IAD
-
EAS
20h 50m
1 stop
Multiple Airlines Logo
9:20 am - 4:30 pm
EAS
-
IAD
13h 10m
1 stop
$504Multiple Airlines
Sun, Feb 8 - Tue, Feb 24
Multiple Airlines Logo
1:08 pm - 8:40 am
IAD
-
EAS
13h 32m
2 stops
Multiple Airlines Logo
9:20 am - 8:30 pm
EAS
-
IAD
17h 10m
2 stops
$518Multiple Airlines
Sun, Feb 8 - Tue, Feb 24
Iberia Logo
6:05 pm - 1:00 pm
IAD
-
EAS
13h 55m
2 stops
Iberia Logo
9:30 pm - 8:30 pm
EAS
-
IAD
28h 00m
2 stops
$535Iberia
Wed, Mar 18 - Tue, Mar 24
Iberia Logo
5:05 pm - 8:40 am
IAD
-
EAS
33h 35m
2 stops
Iberia Logo
9:20 am - 4:30 pm
EAS
-
IAD
13h 10m
1 stop
$597Iberia
Sun, Feb 8 - Tue, Feb 24
Iberia Logo
7:00 pm - 1:00 pm
IAD
-
EAS
13h 00m
1 stop
Iberia Logo
9:30 pm - 8:55 pm
EAS
-
IAD
28h 25m
2 stops
$654Iberia
Sun, Mar 8 - Sun, Mar 15
Iberia Logo
6:05 pm - 1:00 pm
IAD
-
EAS
13h 55m
2 stops
Iberia Logo
9:30 pm - 8:55 pm
EAS
-
IAD
28h 25m
2 stops
$659Iberia
Sun, Mar 8 - Sun, Mar 15
Multiple Airlines Logo
8:45 pm - 8:40 am
IAD
-
EAS
29h 55m
2 stops
Multiple Airlines Logo
9:20 am - 6:45 pm
EAS
-
IAD
15h 25m
2 stops
$703Multiple Airlines
Fri, Feb 13 - Wed, Feb 18
American Airlines Logo
1:08 pm - 8:40 am
IAD
-
EAS
13h 32m
2 stops
American Airlines Logo
9:20 am - 4:30 pm
EAS
-
IAD
13h 10m
1 stop
$717American Airlines
Sun, Feb 8 - Tue, Feb 24
American Airlines Logo
1:08 pm - 8:40 am
IAD
-
EAS
13h 32m
2 stops
American Airlines Logo
9:20 am - 8:30 pm
EAS
-
IAD
17h 10m
2 stops
$723American Airlines
Sun, Feb 8 - Tue, Feb 24
American Airlines Logo
11:34 am - 8:40 am
IAD
-
EAS
15h 06m
2 stops
American Airlines Logo
9:20 am - 8:30 pm
EAS
-
IAD
17h 10m
2 stops
$727American Airlines
Sun, Feb 8 - Tue, Feb 24

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to San Sebastian flight tickets
American Airlines
Feb 8
IAD6:00 pmWashington, D.C. Dulles Intl
20h 50m
1 stop
EAS8:50 pmSan Sebastián
Feb 24
EAS9:20 amSan Sebastián
31h 40m
2 stops
IAD11:00 amWashington, D.C. Dulles Intl
$528
American Airlines
Feb 8
IAD6:00 pmWashington, D.C. Dulles Intl
20h 50m
1 stop
EAS8:50 pmSan Sebastián
Feb 24
EAS9:20 amSan Sebastián
13h 10m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
$586
American Airlines
Feb 22
IAD6:00 pmWashington, D.C. Dulles Intl
20h 50m
1 stop
EAS8:50 pmSan Sebastián
Mar 10
EAS9:20 amSan Sebastián
16h 09m
2 stops
IAD8:29 pmWashington, D.C. Dulles Intl
$592

Iberia flights from Washington, D.C. Dulles Intl Airport to San Sebastian

Our best Iberia deals on Washington, D.C. Dulles Intl Airport to San Sebastian flight tickets
Iberia
Mar 18
IAD6:05 pmWashington, D.C. Dulles Intl
13h 55m
2 stops
EAS1:00 pmSan Sebastián
Mar 24
EAS9:30 pmSan Sebastián
28h 00m
2 stops
IAD8:30 pmWashington, D.C. Dulles Intl
$535
Iberia
Feb 8
IAD5:05 pmWashington, D.C. Dulles Intl
33h 35m
2 stops
EAS8:40 amSan Sebastián
Feb 24
EAS9:20 amSan Sebastián
13h 10m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
$597
Iberia
Mar 8
IAD7:00 pmWashington, D.C. Dulles Intl
13h 00m
1 stop
EAS1:00 pmSan Sebastián
Mar 15
EAS9:30 pmSan Sebastián
28h 25m
2 stops
IAD8:55 pmWashington, D.C. Dulles Intl
$654

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 21, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

6:00 pm-8:50 pm

1 stop20h 50m

San Sebastián

Tue 2/24

9:20 am-4:30 pm

1 stop13h 10m

$504

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

1:08 pm-8:40 am

2 stops13h 32m

San Sebastián

Tue 2/24

9:20 am-8:30 pm

2 stops17h 10m

$518

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 3/18

6:05 pm-1:00 pm

2 stops13h 55m

San Sebastián

Tue 3/24

9:30 pm-8:30 pm

2 stops28h 00m

$535

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

5:05 pm-8:40 am

2 stops33h 35m

San Sebastián

Tue 2/24

9:20 am-4:30 pm

1 stop13h 10m

$597

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 3/8

7:00 pm-1:00 pm

1 stop13h 00m

San Sebastián

Sun 3/15

9:30 pm-8:55 pm

2 stops28h 25m

$654

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 3/8

6:05 pm-1:00 pm

2 stops13h 55m

San Sebastián

Sun 3/15

9:30 pm-8:55 pm

2 stops28h 25m

$659

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 2/13

8:45 pm-8:40 am

2 stops29h 55m

San Sebastián

Wed 2/18

9:20 am-6:45 pm

2 stops15h 25m

$703

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

1:08 pm-8:40 am

2 stops13h 32m

San Sebastián

Tue 2/24

9:20 am-4:30 pm

1 stop13h 10m

$717

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

1:08 pm-8:40 am

2 stops13h 32m

San Sebastián

Tue 2/24

9:20 am-8:30 pm

2 stops17h 10m

$723

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

11:34 am-8:40 am

2 stops15h 06m

San Sebastián

Tue 2/24

9:20 am-8:30 pm

2 stops17h 10m

$727

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 Washington, D.C. Dulles Intl Airport 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. Dulles Intl to San Sebastián?

Iberia is the most popular carrier operating from Washington, D.C. Dulles Intl to San Sebastián

What airlines fly to San Sebastian?

United Airlines, Iberia and Lufthansa are the top three most popular airlines that fly to San Sebastian from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 5 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. Dulles Intl Airport to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to San Sebastian (IAD to EAS) flight deals and tips

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

Fastest flight time

13h 34m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to San Sebastian takes 13h 34m
There are no direct flights from Washington, D.C. Dulles Intl Airport to San Sebastian. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to San Sebastian.
Search flight deals

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

    Washington, D.C. Dulles Intl and San Sebastián are 3799.5 mi apart from one another. A reasonable flight in good conditions will take 13h 34m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to San Sebastián Airport are refreshed on a daily basis.

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

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

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $561Free CancellationRating
7.0
3,094 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?

It is quick and easy to find Washington, D.C. 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 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?

Once all potential Washington, D.C. to San Sebastian flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

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