HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Sebastian

$266+ Cheap flights from Dulles Intl (IAD) to San Sebastian (EAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — EAS
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to San Sebastian with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dulles Intl to San Sebastian

Cheapest flights from Dulles Intl to San Sebastian
Explore the most affordable flight options available from Dulles Intl to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:30 pm
IAD
-
EAS
3 stops29h 50m
Multiple Airlines
Wed 10/218:55 am
EAS
-
IAD
2 stops26h 25m
Multiple Airlines
Deal found 7/29$817
This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:30 pm
IAD
-
EAS
3 stops29h 50m
Multiple Airlines
Mon 10/198:55 am
EAS
-
IAD
2 stops26h 25m
Multiple Airlines
Deal found 7/29$859
This Finnair deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:00 pm
IAD
-
EAS
1 stop21h 50m
Multiple Airlines
Tue 10/69:20 am
EAS
-
IAD
1 stop15h 30m
Multiple Airlines
Deal found 7/26$897
This Expedia deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:35 pm
IAD
-
EAS
1 stop10h 25m
Iberia
Wed 10/219:20 am
EAS
-
IAD
1 stop12h 10m
Iberia
Deal found 7/29$907
This Expedia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:25 pm
IAD
-
EAS
1 stop15h 10m
Iberia
Tue 9/229:20 am
EAS
-
IAD
1 stop15h 30m
Iberia
Deal found 7/30$915
This Expedia deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:35 pm
IAD
-
EAS
1 stop10h 25m
Iberia
Mon 10/199:30 pm
EAS
-
IAD
1 stop27h 20m
Iberia
Deal found 7/29$917
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:25 pm
IAD
-
EAS
2 stops16h 25m
Multiple Airlines
Tue 9/221:40 pm
EAS
-
IAD
1 stop11h 10m
Multiple Airlines
Deal found 7/30$918
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:00 pm
IAD
-
EAS
1 stop14h 50m
American Airlines
Tue 10/69:20 am
EAS
-
IAD
1 stop15h 30m
American Airlines
Deal found 7/26$939
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:10 pm
IAD
-
EAS
1 stop13h 50m
American Airlines
Tue 10/139:20 am
EAS
-
IAD
1 stop15h 30m
American Airlines
Deal found 7/27$940

Find flight deals from Dulles Intl to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San Sebastian (EAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 30, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$817
(Mytrip)

One-way from

$266
(Kiwi.com)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-San Sebastián flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San Sebastián flights.
Search Deals
From Washington, D.C. Dulles Intl to San Sebastián
Search Deals
One-way flight from Washington, D.C. Dulles Intl to San Sebastián
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated July 30, 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

Cheapest round-trip

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 10/15

8:30 pm-8:20 am

3 stops29h 50m

San Sebastián

Mon 10/19

8:55 am-5:20 am

2 stops26h 25m

$859

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 10/15

8:30 pm-8:20 am

3 stops29h 50m

San Sebastián

Wed 10/21

8:55 am-10:15 pm

3 stops19h 20m

$870

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 9/20

5:00 pm-8:50 pm

1 stop21h 50m

San Sebastián

Tue 10/6

9:20 am-6:50 pm

1 stop15h 30m

$897
Quickest round-trip

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 10/15

1:23 pm-8:40 am

2 stops13h 17m

San Sebastián

Wed 10/21

9:20 am-3:30 pm

1 stop12h 10m

$939

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Tue 9/15

8:30 pm-8:35 am

3 stops30h 05m

San Sebastián

Tue 9/22

8:55 am-10:15 pm

3 stops19h 20m

$970

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 12/6

4:40 pm-1:00 pm

2 stops38h 20m

San Sebastián

Thu 12/10

9:30 pm-4:20 pm

1 stop24h 50m

$1,071

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Tue 8/25

8:30 pm-8:50 pm

1 stop18h 20m

San Sebastián

Sun 8/30

9:30 pm-3:30 pm

1 stop24h 00m

$1,077

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 9/4

5:15 pm-5:00 pm

2 stops17h 45m

San Sebastián

Fri 9/11

9:20 am-3:30 pm

1 stop12h 10m

$1,095
Cheapest one-way

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 8/30

8:30 pm-8:20 am

3 stops29h 50m

$338

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Tue 9/15

8:30 pm-10:35 am

3 stops32h 05m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Dulles Intl to San Sebastian

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to San Sebastian in July.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Sebastian flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-San Sebastian flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San Sebastian flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Sebastian flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-San Sebastian flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to San Sebastian. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Sebastian from Washington, D.C. Dulles Intl?

    Located just 9.7 mi from the city center, San Sebastián is the airport most travelers will use when flying to San Sebastian from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to San Sebastián (EAS) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to San Sebastian?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to San Sebastian in 13h 17m. Fly via American Airlines to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and San Sebastian is about 3807 mi.

  • Can I find deals for flights from Dulles Intl to San Sebastian that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to San Sebastian?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to San Sebastian.

  • Can I find deals for business class flights from Dulles Intl to San Sebastian?

    Yes. Cheapflights offers flight deals from Dulles Intl to San Sebastian by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to San Sebastian by adding a car rental and/or hotel reservation to your travel itinerary.
Bilbao Airport car rentals
Vitoria-Gasteiz Airport car rentals
Bilbao car rentals

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights