WAS - EAS

$400 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to San Sebastian departing on 9/13. 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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Flight Deals

Cheap Flights from Washington, D.C. to San Sebastian (WAS-EAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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 Washington, D.C. to San Sebastian

Tue, Sep 30 - Wed, Oct 15
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$566Iberia
Find Deal
Mon, Sep 15 - Mon, Sep 22
American Airlines Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
American Airlines Logo
1:40 pm - 3:00 pmEAS-IAD
31h 20m1 stop
$608American Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 10:57 amEAS-IAD
43h 27m2 stops
$628Iberia
Find Deal
Thu, Oct 9 - Thu, Oct 16
American Airlines Logo
8:29 am - 8:40 amDCA-EAS
18h 11m2 stops
American Airlines Logo
9:20 am - 10:00 pmEAS-DCA
18h 40m2 stops
$632American Airlines
Find Deal
Tue, Sep 30 - Wed, Oct 15
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 6:55 pmEAS-IAD
27h 25m2 stops
$680Iberia
Find Deal
Fri, Oct 10 - Fri, Oct 17
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$693Iberia
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
$703Iberia
Find Deal
Tue, Sep 30 - Wed, Oct 15
 Logo
4:35 pm - 5:20 pmIAD-EAS
18h 45m2 stops
 Logo
5:55 pm - 3:00 pmEAS-IAD
27h 05m2 stops
Fri, Nov 7 - Tue, Nov 11
Iberia Logo
6:20 pm - 8:50 pmIAD-EAS
20h 30m2 stops
Iberia Logo
9:30 pm - 3:35 pmEAS-IAD
24h 05m2 stops
$718Iberia
Find Deal
Fri, Nov 7 - Tue, Nov 11
Iberia Logo
6:20 pm - 8:50 pmIAD-EAS
20h 30m2 stops
Iberia Logo
1:40 pm - 3:35 pmEAS-IAD
31h 55m2 stops
$726Iberia
Find Deal
Booking Insights

KAYAK's insights & trends for Washington, D.C. to San Sebastian flights

Get data-powered insights and trends into flights from Washington, D.C. 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, D.C. 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, D.C. to San Sebastian were found on Iberia ($566) and American Airlines ($608).

Good to know

Low seasonFebruary
Cheapest flight$400
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Washington Dulles Airport to San Sebastian

When to book flights from Washington, D.C. to San Sebastian

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to San Sebastian

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to San Sebastian was $400 for a one-way ticket and $566 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and San Sebastian?

    Yes, you’ll need a passport to travel to San Sebastian from Washington, D.C..

  • Which airports will I be using when flying from Washington, D.C. to San Sebastian?

    On your way to San Sebastian, you’ll fly out from one of these Washington, D.C. airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You’ll be landing at San Sebastián.

  • Which aircraft models fly most regularly from Washington, D.C. to San Sebastian?

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

  • Which airline alliances offer flights from Washington, D.C. to San Sebastian?

    oneworld is the only airline alliance operating flights between Washington, D.C. and San Sebastian.

  • Which is the best airline for flights from Washington, D.C. to San Sebastian, American Airlines or Iberia?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to San Sebastian are American Airlines and Iberia. With an average price for the route of $1,058 and an overall rating of 7.2, American Airlines is the most popular choice. Iberia is also a great choice for the route, with an average price of $842 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to San Sebastian.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. 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, D.C. 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, D.C. 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, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Washington, D.C. 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 Washington, D.C. 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.
7.2
American AirlinesOverall score based on 10000 reviews
7.2Comfort
8.0Crew
6.9Entertainment
6.5Food
7.5Boarding
Airline reviews

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

4.0 OkayDorothy, Aug 2025DCA - GRR
Read more American Airlines reviews

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

The flight delay in Dallas created a domino effect that impacted all of the connecting flights. It also increased the number of connections. I missed my flight from Casablanca to Marrakech because of the tight turnaround when landing in Casablanca. . CMN airport was understaffed. Only one person could help while other employees were just watching him. It was an extremely frustrating situation. People were crying and slamming their palms on the counter when speaking to the customer service provider, Allabough (man’s name?). Allabough couldn’t change my flight in the system. simultaneously, I was on the call with America. Airlines customer service rep named Solomon that said he couldn’t change it either. So, I took a ONYA voyages train to from Casablanca to Marrakech to get there on Friday June 26. This was unpredictable trip.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

No entertainment yatem in flight at seat 51H. Would not shut down either leaving a self moving and openin and changing menus with changes in colors,images brightness levels sort of the type when you get sleep deprivation and image overload when being tortured during an interrogation. 8 hours worth of it. Unable to place backpack underneath seat on that chair. One female stewardess was excellent as she gave up her carryon's space for my backpack but the rest of the iberia crew were very sharp an chtting during the whole flight. The plane did not have hot water so nobody had coffee nor tea. The plane was not up to par to be flying.

Pitch was very small. Knees were on the seat back in front of me.

Everyone was nice. It was on time and the food was. Airplane food, but not horrible

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

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.

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.

Everything you need to know for your flight from Washington, D.C. to San Sebastian

Information on your arrival and departure airports

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