IAD - EAS

$512 Find Cheap Flights from Washington Dulles Airport to San Sebastian

This is the cheapest round-trip 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 10/15. 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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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

Wed, Oct 15 - Wed, Oct 22
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$512Iberia
Find Deal
Sun, Nov 2 - Mon, Nov 10
Iberia Logo
6:00 pm - 1:00 pmIAD-EAS
13h 00m1 stop
Iberia Logo
9:30 pm - 4:30 pmEAS-IAD
25h 00m1 stop
$523Iberia
Find Deal
Wed, Oct 15 - Wed, Oct 22
American Airlines Logo
8:09 am - 8:40 amIAD-EAS
18h 31m2 stops
American Airlines Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$612American Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Iberia Logo
7:00 pm - 8:50 pmIAD-EAS
20h 50m1 stop
Iberia Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$632Iberia
Find Deal
Sun, Nov 2 - Mon, Nov 10
Iberia Logo
6:00 pm - 1:00 pmIAD-EAS
13h 00m1 stop
Iberia Logo
9:30 pm - 3:35 pmEAS-IAD
48h 05m2 stops
$639Iberia
Find Deal
Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
2:18 pm - 8:40 amIAD-EAS
13h 22m2 stops
American Airlines Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$647American Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
2:18 pm - 8:40 amIAD-EAS
13h 22m2 stops
Multiple Airlines Logo
9:30 pm - 11:07 pmEAS-IAD
31h 37m2 stops
$696Multiple Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
Multiple Airlines Logo
8:45 pm - 5:20 pmIAD-EAS
14h 35m2 stops
Multiple Airlines Logo
5:55 pm - 1:30 pmEAS-IAD
25h 35m2 stops
$713Multiple Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
Iberia Logo
6:20 pm - 8:50 pmIAD-EAS
20h 30m2 stops
Iberia Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$751Iberia
Find Deal
Tue, Nov 4 - Sun, Nov 9
American Airlines Logo
6:00 pm - 1:00 pmIAD-EAS
13h 00m1 stop
American Airlines Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$832American Airlines
Find Deal

Everything you should know

Top airlines
Iberia
Cheapest • from $512 (round-trip)
Iberia
Best reviews • 7.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$512
Iberia
Wed 10/15Wed 10/22
IAD - EAS • 1 stop
Cheapest one-way
Multiple Airlines
Wed 9/17
IAD - EAS • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
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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 ($512) and American Airlines ($612).

Good to know

Cheapest flight$512
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 $512 for a round-trip ticket.

  • 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 2924 reviews
6.6Entertainment
7.1Boarding
6.7Comfort
7.6Crew
6.3Food
Airline reviews

This is where i leave an airline review. Test test test!

8.0 ExcellentLucas, Sep 2025BER - BCN
Read more Iberia reviews

This is where i leave an airline review. Test test test!

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

Boarding an international flight via several sets of stairs and shuttle busses to the tarmac even when multiple jet-bridges were empty at Madrid airport (the hub for Iberia) was not pleasant. I was fine, but a lot of elderly folks and families with kids were struggling. A bad way to start a flight. Business class seats were nice, although not cleaned well from the prior flight.

This was a short flight. We sat in business class so we we were served a warm meal, which was nice. The flight attendants were very attentive, professional, and kind.

The flight was great; I don't see any area of improvement.

The crew were not very personable. The crew did not serve tea or coffee. The bathroom was not kept clean. Two out of the 5 toilets in the cabin weren't working.

Delayed first flight Geneva Madrid.. We didn’t miss our 2nd flight only because the 2nd flight Madrid Dallas was 1h delayed. However we did end up missing the 3rd leg Dallas Austin. Luggage didn’t show up in Dallas. So we re missing 2 suit cases. Customer service sent us to a hotel in Dallas. Only one room booked for 5!! Pretty bad experience overall. I won’t book a flight on Iberia in the future

Crew was excellent, great customer service, checked luggage took 1 hour and a half to come out at the baggage claim, the only negative thing about the flight.

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.

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

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