WAS - EAS

$582 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to San Sebastian departing on 9/22. 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 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

Mon, Sep 22 - Tue, Sep 30
Iberia Logo
3:35 pm - 1:00 pmDCA-EAS
15h 25m2 stops
Iberia Logo
9:30 pm - 11:07 pmEAS-DCA
31h 37m2 stops
$582Iberia
Find Deal
Tue, Sep 2 - Tue, Sep 9
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$598Iberia
Find Deal
Mon, Aug 11 - Wed, Aug 27
 Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
 Logo
9:30 pm - 3:00 pmEAS-IAD
23h 30m1 stop
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
Fri, Sep 19 - Fri, Sep 26
Iberia Logo
1:15 pm - 8:40 amDCA-EAS
13h 25m2 stops
Iberia Logo
9:20 am - 11:07 pmEAS-DCA
19h 47m2 stops
$632Iberia
Find Deal
Wed, Oct 15 - Tue, Oct 21
 Logo
6:50 pm - 8:40 amBWI-EAS
31h 50m2 stops
 Logo
9:30 pm - 11:34 pmEAS-BWI
32h 04m2 stops
Mon, Sep 22 - Tue, Sep 30
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 3:00 pmEAS-IAD
23h 30m1 stop
$653Iberia
Find Deal
Fri, Sep 19 - Fri, Sep 26
American Airlines Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
American Airlines Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$693American Airlines
Find Deal
Wed, Sep 10 - Wed, Sep 17
American Airlines Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
American Airlines Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$748American Airlines
Find Deal
Sun, Aug 24 - Sun, Aug 31
British Airways Logo
9:20 pm - 4:40 pmBWI-EAS
13h 20m1 stop
British Airways Logo
1:40 pm - 6:08 pmEAS-BWI
34h 28m2 stops
$2,410British Airways
Find Deal
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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.

How much is a round-trip flight from Washington, D.C. to San Sebastian?

Good to know

Low seasonNovember
High seasonMay
Cheapest flight$582
Best time to beat the crowds with an average 43% drop in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Reagan Washington National 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 $582 for a round-trip ticket.

  • 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 $962 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 $835 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
6.5Food
8.0Crew
7.5Boarding
6.9Entertainment
Airline reviews

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.

4.0 OkayAnonymous, Jun 2025DFW - MAD
Read more American Airlines reviews

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.

Good experience but the snacks are not gluten free, so I cannot eat them.

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.

Well my luggage was damaged and they lost the plastic cover. I need to file a claim and I would like for someone to follow up with me on this. Thanks.

Bag misplaced. Iberia claims bag has been forwarded. But AirTag shows that the bag is still in Madrid.

Not having to check carry on bags when plane wasn’t full. (The told us it was)

Service and food were excellent, could have been more info in English.

I was in business class for the 8 hour flight where: 1. The WiFi did not work 2. The entertainment system did not work 3. We were told there were no hot drinks for the entire flight

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

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