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San Sebastian

$450+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — EAS
May 29 — Jun 51
Fri 5/29
Fri 6/5
1 adult, Economy
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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 April 29, 2026.

This Expedia deal was found by Cheapflights users on 4/28. 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.
Wed 9/2310:25 pm
IAD
-
EAS
2 stops27h 55m
Iberia
Wed 9/309:20 am
EAS
-
IAD
1 stop12h 10m
Iberia
Deal found 4/28$827
This Orbitz deal was found by Cheapflights users on 4/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:00 pm
IAD
-
EAS
1 stop21h 50m
Iberia
Mon 8/249:30 pm
EAS
-
IAD
1 stop24h 00m
Iberia
Deal found 4/27$875
This Ovago deal was found by Cheapflights users on 4/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:00 pm
IAD
-
EAS
1 stop21h 50m
British Airways
Mon 8/249:30 pm
EAS
-
IAD
1 stop24h 00m
British Airways
Deal found 4/27$913
This Gurufare deal was found by Cheapflights users on 4/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:25 pm
IAD
-
EAS
2 stops16h 25m
Multiple Airlines
Mon 8/249:30 pm
EAS
-
IAD
1 stop24h 00m
Multiple Airlines
Deal found 4/27$931
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Mon 8/101:23 pm
IAD
-
EAS
2 stops13h 17m
Multiple Airlines
Sun 8/239:30 pm
EAS
-
IAD
1 stop24h 00m
Multiple Airlines
Deal found 4/27$932
This Expedia deal was found by Cheapflights users on 4/28. 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.
Wed 9/2310:25 pm
IAD
-
EAS
2 stops27h 55m
Multiple Airlines
Wed 9/309:30 pm
EAS
-
IAD
2 stops32h 21m
Multiple Airlines
Deal found 4/28$934
This Ovago deal was found by Cheapflights users on 4/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:00 pm
IAD
-
EAS
1 stop21h 50m
British Airways
Mon 8/249:30 pm
EAS
-
IAD
1 stop24h 00m
British Airways
Deal found 4/27$944
This Ovago deal was found by Cheapflights users on 4/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:00 pm
IAD
-
EAS
1 stop21h 50m
British Airways
Sat 8/229:30 pm
EAS
-
IAD
1 stop24h 00m
British Airways
Deal found 4/27$973
This Trip.com deal was found by Cheapflights users on 4/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:00 pm
IAD
-
EAS
1 stop14h 00m
Iberia
Sun 8/239:30 pm
EAS
-
IAD
1 stop24h 00m
Iberia
Deal found 4/27$977
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Thu 8/69:11 am
IAD
-
EAS
2 stops17h 29m
Multiple Airlines
Sat 8/229:30 pm
EAS
-
IAD
1 stop24h 00m
Multiple Airlines
Deal found 4/27$982

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 April 29, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,010
(Mytrip)

One-way from

$471
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$787
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
Highest demand for flights based on searches. 32% potential increase in price ($470 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 April 29, 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

Tue 7/14

1:08 pm-8:40 am

2 stops13h 32m

San Sebastián

Tue 7/28

9:30 pm-3:30 pm

1 stop24h 00m

$1,053

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 5/11

10:25 pm-8:40 am

2 stops28h 15m

San Sebastián

Mon 5/25

9:30 pm-3:30 pm

1 stop24h 00m

$1,072

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Tue 6/9

5:40 pm-8:40 am

2 stops33h 00m

San Sebastián

Mon 6/15

9:30 pm-3:30 pm

1 stop24h 00m

$1,142

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 6/8

6:20 am-8:40 am

2 stops20h 20m

San Sebastián

Mon 6/15

1:40 pm-3:30 pm

1 stop31h 50m

$1,144

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 6/8

9:55 am-8:20 am

3 stops40h 25m

San Sebastián

Mon 6/15

5:55 pm-8:29 pm

3 stops32h 34m

$1,154
Quickest round-trip

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 6/11

5:00 pm-8:50 pm

1 stop21h 50m

San Sebastián

Thu 6/18

9:20 am-3:30 pm

1 stop12h 10m

$1,207

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 6/8

5:00 pm-8:50 pm

1 stop21h 50m

San Sebastián

Mon 6/15

9:30 pm-3:30 pm

1 stop24h 00m

$1,221

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 7/20

5:00 pm-1:00 pm

1 stop14h 00m

San Sebastián

Wed 7/29

9:30 pm-3:30 pm

1 stop24h 00m

$1,248

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Tue 6/9

5:15 pm-5:20 pm

3 stops18h 05m

San Sebastián

Mon 6/15

5:55 pm-3:10 pm

2 stops27h 15m

$1,316

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 5/3

12:40 pm-5:20 pm

3 stops22h 40m

San Sebastián

Tue 5/19

8:55 am-7:00 pm

2 stops16h 05m

$1,369

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 April.
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 20h 20m. Fly via Iberia or American Airlines to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and San Sebastian is about 3807 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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

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