HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Sebastian

$560+ Cheap flights from Dulles Intl (IAD) to San Sebastian (EAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — EAS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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

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 September 11, 2025.

Round-trip from

$560
(Expedia)

Popular in

April

Cheapest in

February

Average price

$857
From Washington, D.C. Dulles Intl to San Sebastián
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 September 11, 2025.

This Expedia deal was found by Cheapflights users on 9/11. 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.
Mon 10/64:35 pmIAD - EAS
1 stop10h 05mMultiple Airlines
Wed 10/229:30 pmEAS - IAD
2 stops32h 23mMultiple Airlines
Deal found 9/11$560
This American Airlines deal was found by Cheapflights users on 9/11. 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 10/64:35 pmIAD - EAS
1 stop10h 05mAmerican Airlines
Wed 10/229:20 amEAS - IAD
1 stop11h 40mAmerican Airlines
Deal found 9/11$566
This Expedia deal was found by Cheapflights users on 9/10. 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.
Sat 10/255:37 pmIAD - EAS
2 stops34h 03mIberia
Sat 11/19:30 pmEAS - IAD
1 stop25h 00mIberia
Deal found 9/10$711
This Iberia deal was found by Cheapflights users on 9/9. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:05 pmIAD - EAS
2 stops21h 45mIberia
Tue 11/119:30 pmEAS - IAD
2 stops24h 05mIberia
Deal found 9/9$823
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Sat 10/255:00 pmIAD - EAS
2 stops15h 30mMultiple Airlines
Sat 11/12:05 pmEAS - IAD
3 stops35h 10mMultiple Airlines
Deal found 9/10$1,257
This American Airlines deal was found by Cheapflights users on 9/9. 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 11/76:20 pmIAD - EAS
2 stops20h 30mAmerican Airlines
Tue 11/119:20 amEAS - IAD
1 stop13h 10mAmerican Airlines
Deal found 9/9$1,537

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 September 11, 2025.
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

Dulles Intl

Fly to

San Sebastian

Route

Depart

Return

Price

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 10/6

4:35 pm-8:40 am

1 stop10h 05m

San Sebastián

Wed 10/22

9:30 pm-11:53 pm

2 stops32h 23m

$560

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 1/30

6:20 pm-8:50 pm

2 stops20h 30m

San Sebastián

Mon 2/2

9:30 pm-4:30 pm

1 stop25h 00m

$582

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 1/30

6:20 pm-8:50 pm

2 stops20h 30m

San Sebastián

Mon 2/2

9:30 pm-3:35 pm

2 stops24h 05m

$620

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sat 10/25

5:37 pm-9:40 am

2 stops34h 03m

San Sebastián

Sat 11/1

9:30 pm-5:30 pm

1 stop25h 00m

$711

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/7

5:05 pm-8:50 pm

2 stops21h 45m

San Sebastián

Tue 11/11

9:30 pm-3:35 pm

2 stops24h 05m

$823

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sat 10/25

5:00 pm-2:30 pm

2 stops15h 30m

San Sebastián

Sat 11/1

2:05 pm-8:15 pm

3 stops35h 10m

$1,257

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/7

6:20 pm-8:50 pm

2 stops20h 30m

San Sebastián

Tue 11/11

9:20 am-4:30 pm

1 stop13h 10m

$1,537

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 9/24

4:35 pm-8:40 am

1 stop10h 05m

San Sebastián

Sun 9/28

1:40 pm-5:35 pm

2 stops33h 55m

$1,882

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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.

Reviews of airlines servicing San Sebastian

Get insights into the airlines that provide service to San Sebastian. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Sebastian. Reviews last updated September 11, 2025.
See what other customers who have flown with Iberia from Washington, D.C. Dulles Intl Airport to San Sebastian have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Iberia
7.0
Good
2,929 reviews

Overall

7.0

Comfort

6.7

Boarding

7.1

Crew

7.6

Food

6.3

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight
Iberia
7.0
Good
2,929 reviews
Iberia
7.0
Good
2,929 reviews

Overall

7.0

Comfort

6.7

Boarding

7.1

Crew

7.6

Food

6.3

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight

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 1 airline.

  • 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 30m. Fly via Iberia to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and San Sebastian is about 3807 mi.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to San Sebastian round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to San Sebastian round-trip from $561.

  • 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.

Alternative routes for Dulles Intl to San Sebastian

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Bilbao flights
Reagan-National to Bilbao flights
Baltimore to Bilbao flights
Reagan-National to San Sebastian flights
Baltimore to San Sebastian flights

Top airline flying from Dulles Intl to San Sebastian

Discover the top airline that operate flights from Dulles Intl to San Sebastian. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$561Average$1,055FlexibilityNo cancel feeOn-time77%

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.