IAD - EAS

$341 Find Cheap Flights from Washington Dulles Airport to San Sebastian

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to San Sebastian departing on 4/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Sebastian

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Sebastian, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Sebastian, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$733
Multiple Airlines
Sun 4/26Sat 5/2
IAD - EAS • 1 stop
Cheapest one-way
$341
Multiple Airlines
Mon 4/27
IAD - EAS • 3 stops
Top airlines
American Airlines
Cheapest • from $737 (round-trip)
Iberia
Best reviews • 7.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to San Sebastian!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to San Sebastian (IAD-EAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to San Sebastian that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to San Sebastian

Sun, Apr 26 - Sat, May 2
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
$733Multiple Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
11:30 am - 8:40 am
IAD
-
EAS
15h 10m
2 stops
American Airlines Logo
9:30 pm - 5:30 pm
EAS
-
IAD
25h 00m
1 stop
$737American Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
5:00 am - 8:40 am
IAD
-
EAS
21h 40m
2 stops
American Airlines Logo
9:30 pm - 8:30 pm
EAS
-
IAD
28h 00m
2 stops
$747American Airlines
Sun, Apr 26 - Sat, May 2
Multiple Airlines Logo
5:00 pm - 5:20 pm
IAD
-
EAS
18h 20m
2 stops
Multiple Airlines Logo
5:55 pm - 3:30 pm
EAS
-
IAD
27h 35m
2 stops
$868Multiple Airlines
Sun, Apr 26 - Sat, May 2
Iberia Logo
5:00 pm - 1:00 pm
IAD
-
EAS
14h 00m
1 stop
Iberia Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$887Iberia
Sun, Apr 26 - Sat, May 2
Iberia Logo
10:25 pm - 8:40 am
IAD
-
EAS
28h 15m
2 stops
Iberia Logo
1:40 pm - 3:30 pm
EAS
-
IAD
31h 50m
1 stop
$962Iberia
Wed, Mar 18 - Wed, Mar 25
American Airlines Logo
2:03 pm - 8:40 am
IAD
-
EAS
13h 37m
2 stops
American Airlines Logo
9:30 pm - 5:30 pm
EAS
-
IAD
25h 00m
1 stop
$997American Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
7:00 pm - 1:00 pm
IAD
-
EAS
13h 00m
1 stop
Multiple Airlines Logo
9:30 pm - 4:35 pm
EAS
-
IAD
24h 05m
2 stops
$1,092Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Iberia Logo
7:20 pm - 8:50 pm
IAD
-
EAS
20h 30m
2 stops
Iberia Logo
9:30 pm - 8:30 pm
EAS
-
IAD
28h 00m
2 stops
$1,109Iberia
Fri, Jul 31 - Mon, Aug 10
Multiple Airlines Logo
5:00 pm - 8:50 pm
IAD
-
EAS
21h 50m
1 stop
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$1,179Multiple Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to San Sebastian flights

Get data-powered insights and trends into flights from Dulles Intl to San Sebastian to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington Dulles Airport to San Sebastian?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington Dulles Airport to San Sebastian were found on American Airlines ($737) and Iberia ($887).

Find deals

Good to know

Cheapest flight$341
Flight from Washington Dulles Airport to San Sebastian

When to book flights from Dulles Intl to San Sebastian

Are your dates flexible? Find out the best times to travel from Dulles Intl to San Sebastian based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to San Sebastian flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to San Sebastian was $341 for a one-way ticket and $733 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and San Sebastian?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in San Sebastian.

  • Which aircraft models fly most regularly from Washington Dulles Airport to San Sebastian?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to San Sebastian?

    oneworld is the only airline alliance operating flights between Washington Dulles Airport and San Sebastian.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to San Sebastian?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to San Sebastian.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to San Sebastian?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to San Sebastian?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Sebastian with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and EAS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to San Sebastian?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Sebastian from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to San Sebastian

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to San Sebastian. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to San Sebastian? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
IberiaOverall score based on 3103 reviews
7.7Crew
7.2Boarding
6.7Comfort
6.4Food
6.6Entertainment
Airline reviews

The pilot was professional and very good. The flight crew, very young and often looked flustered and overwhelmed. The seats were among the most uncomfortable in the air. The boarding somewhat chaotic. The price reasonable. Overall it was an average budget airline experience...although Iberia is not a budget airline. I fear if Iberia doesn't up it's game customers like us will go elsewhere.

4.0 OkayCFJ, Jan 2026
VCE - MAD
Read more Iberia reviews

The pilot was professional and very good. The flight crew, very young and often looked flustered and overwhelmed. The seats were among the most uncomfortable in the air. The boarding somewhat chaotic. The price reasonable. Overall it was an average budget airline experience...although Iberia is not a budget airline. I fear if Iberia doesn't up it's game customers like us will go elsewhere.

Bad weather Excelent pilot Spoke British 😆on time seats small ad expected in a discount airline

It wasn’t great because the third-party from Kayak there was just no information about how to check in with Vueling. And the purchase of the ticket from under pricer just made everything really difficult. I’m unlikely to use Kayak again for these reasons.

It was fine, older plane with limited entertainment, otherwise fine.

the seats were bad and uncomfortable and the food was not tasty.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

It was budget airline Veuling, even though we booked Iberia.

The staff was very nice and helpful. Some of the best crew I have met.

Bad experience. The seat room are very tight. The food is not good and the breakfast has no hot drink.

Everything you need to know for your flight from Dulles Intl to San Sebastian

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
San Sebastian (EAS)