IAD - EAS

$363 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 9/12. 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

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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Flights 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

Mon, Nov 24 - Thu, Dec 4
Iberia Logo
9:45 pm - 8:40 amIAD-EAS
28h 55m2 stops
Iberia Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$571Iberia
Find Deal
Wed, Sep 24 - Sun, Sep 28
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 3:00 pmEAS-IAD
23h 30m1 stop
$627Iberia
Find Deal
Wed, Sep 24 - Sun, Sep 28
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 3:00 pmEAS-IAD
23h 30m1 stop
$628Iberia
Find Deal
Wed, Sep 17 - Sun, Sep 21
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 3:00 pmEAS-IAD
23h 30m1 stop
$650Iberia
Find Deal
Mon, Nov 24 - Thu, Dec 4
Iberia Logo
9:45 pm - 8:40 amIAD-EAS
28h 55m2 stops
Iberia Logo
9:30 pm - 3:35 pmEAS-IAD
24h 05m2 stops
$718Iberia
Find Deal
Mon, Nov 24 - Thu, Dec 4
Iberia Logo
9:45 pm - 8:40 amIAD-EAS
28h 55m2 stops
Iberia Logo
9:30 pm - 7:55 pmEAS-IAD
28h 25m2 stops
$719Iberia
Find Deal
Fri, Sep 12 - Fri, Sep 19
 Logo
4:35 pm - 8:50 amIAD-EAS
34h 15m2 stops
 Logo
5:55 pm - 3:00 pmEAS-IAD
27h 05m2 stops
Wed, Sep 24 - Sun, Sep 28
American Airlines Logo
11:18 am - 8:40 amIAD-EAS
15h 22m2 stops
American Airlines Logo
1:40 pm - 3:00 pmEAS-IAD
31h 20m1 stop
$1,082American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
American Airlines Logo
7:59 am - 1:00 pmIAD-EAS
23h 01m2 stops
American Airlines Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$1,162American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
American Airlines Logo
7:59 am - 1:00 pmIAD-EAS
23h 01m2 stops
American Airlines Logo
1:40 pm - 4:02 pmEAS-IAD
56h 22m2 stops
$1,188American Airlines
Find Deal
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 Iberia ($571) and American Airlines ($1,082).

Good to know

Cheapest flight$363
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 $363 for a one-way ticket and $571 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 2859 reviews
7.6Crew
6.6Entertainment
7.1Boarding
6.7Comfort
6.3Food
Airline reviews

Horrible experience airline crew was unprofessional. Flight was delayed. Suit cases did not arrive. Never flying iberia again

2.0 MediocreJackie, Jul 2025BCN - MAD
Read more Iberia reviews

Horrible experience airline crew was unprofessional. Flight was delayed. Suit cases did not arrive. Never flying iberia again

People point to America as the model of late stage capitalism. My friends, airlines in america at least give you WiFi, and they haven’t quite smashed people into cardboard tv dinner trays yet. Iberia has mastered the tv dinner seat and WiFi is 20 euros. Be serious yall.

Iberia lost my bag, said they found it in another country, said they sent it to me, but never did. Went my whole trip without my stuff, but expecting it to show up because that’s what they said would happen. Their communication sucks, their website sucks, and to top it all off, their seats are small and uncomfortable. They’re bad at their jobs and they should feel bad about themselves. Do not even get me started on the flight home. AVOID!

The flight was delayed over 4 hours. Business class is just slightly upgraded economy.

Delayed and missed connections on leaving the states and returning Planes were old and small- very uncomfortable. Meals were good but very infrequent service for even water/drinks. No explanations for 3+ hour delay

Boarding on the buses isn’t efficient. Overall, it was great.

BEWARE!!! Iberia changes your seats at random. I paid for a window seat and they changed it to one in the middle aisle resting against the bathroom- can’t lean back + hear every flush. This on a 11 hour flight.. There were families that were broken up with separate seats all over the plane. Lots of upset passengers showing their seat confirmation to the besieged and helpless airline steward. Also, the gluten free meal was tasteless.

Iberia airlines was late on every flight I had. It was very difficult to communicate in English with iberia airlines and airport employees.

ground crew and check-in was pathetic - insisted on charging me for luggage even though the ticket said it was already included. They also accidentally sent my luggage through without a luggage tag and had to retrieve it. Generally, it was like a bad movie.

The app on phone and the online check in is not good, it would not give me the option of Spain or Madrid City in the drop down menu and I couldn't move forward with online check in.

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

Information on your arrival and departure airports

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