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San Sebastian

$631+ Cheap flights from Washington, D.C. (WAS) to San Sebastian (EAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — EAS
Nov 16 — Nov 231
Sun 11/16
Sun 11/23
1 adult, Economy
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Find flight deals from Washington, D.C. to San Sebastian

Cheapest flights from Washington, D.C. to San Sebastian
Explore the most affordable flight options available from Washington, D.C. to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 17, 2025.

This American Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/291:30 pmDCA - EAS
2 stops13h 10mAmerican Airlines
Sat 12/61:40 pmEAS - DCA
2 stops26h 00mAmerican Airlines
Deal found 10/15$631
This American Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/299:12 amIAD - EAS
2 stops17h 28mAmerican Airlines
Sat 12/69:30 pmEAS - IAD
1 stop25h 00mAmerican Airlines
Deal found 10/15$631
This Expedia deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/298:21 pmBWI - EAS
2 stops30h 19mMultiple Airlines
Sat 12/69:30 pmEAS - BWI
2 stops27h 15mMultiple Airlines
Deal found 10/15$751
This American Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:10 amDCA - EAS
2 stops32h 40mAmerican Airlines
Tue 11/111:40 pmEAS - DCA
2 stops37h 50mAmerican Airlines
Deal found 10/15$851
This Mytrip deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/295:30 pmIAD - EAS
2 stops14h 00mMultiple Airlines
Sat 12/62:05 pmEAS - IAD
3 stops34h 25mMultiple Airlines
Deal found 10/15$1,046
This Iberia deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:05 pmIAD - EAS
2 stops13h 55mIberia
Tue 11/119:30 pmEAS - IAD
2 stops24h 05mIberia
Deal found 10/14$1,090
This Iberia deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/154:35 pmIAD - EAS
1 stop10h 05mIberia
Wed 10/229:30 pmEAS - IAD
1 stop23h 30mIberia
Deal found 10/14$1,115
This Ovago deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:37 pmIAD - EAS
2 stops34h 03mIberia
Sat 11/89:30 pmEAS - IAD
1 stop25h 00mIberia
Deal found 10/14$1,153
This American Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3111:50 amBWI - EAS
2 stops39h 50mAmerican Airlines
Tue 11/41:40 pmEAS - BWI
2 stops38h 32mAmerican Airlines
Deal found 10/14$1,650
This Iberia deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:35 pmBWI - EAS
2 stops54h 05mIberia
Tue 11/41:40 pmEAS - BWI
2 stops35h 05mIberia
Deal found 10/16$1,672
This British Airways deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:35 pmBWI - EAS
1 stop13h 35mMultiple Airlines
Sat 12/279:30 pmEAS - BWI
2 stops27h 55mMultiple Airlines
Deal found 10/15$2,036
This SmartFares deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:59 pmDCA - EAS
2 stops14h 01mIberia
Sat 12/279:30 pmEAS - DCA
2 stops27h 10mIberia
Deal found 10/15$2,454

Cheap flight deals from Washington, D.C. to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to San Sebastian (EAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$631
(American Airlines)

Popular in

April

Cheapest in

February

Average price

$687
Provider with most accurate pricing for Washington, D.C. (WAS)-San Sebastián flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San Sebastián flights.
Search Deals
From Washington, D.C. (WAS) to San Sebastián
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to San Sebastian that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Sebastian that are best for you.

Fly from

Washington, D.C.

Fly to

San Sebastian

Route

Depart

Return

Price

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Sat 11/29

1:30 pm-8:40 am

2 stops13h 10m

San Sebastián

Sat 12/6

1:40 pm-9:40 am

2 stops26h 00m

$631

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sat 11/29

9:12 am-8:40 am

2 stops17h 28m

San Sebastián

Sat 12/6

9:30 pm-4:30 pm

1 stop25h 00m

$631

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Fri 11/7

1:44 pm-8:50 pm

2 stops25h 06m

San Sebastián

Tue 11/11

1:40 pm-9:30 pm

2 stops37h 50m

$851

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/7

5:05 pm-1:00 pm

2 stops13h 55m

San Sebastián

Tue 11/11

9:30 pm-3:35 pm

2 stops24h 05m

$1,090

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sat 11/1

5:37 pm-8:40 am

2 stops34h 03m

San Sebastián

Sat 11/8

9:30 pm-4:30 pm

1 stop25h 00m

$1,153

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sat 11/29

10:55 pm-1:30 pm

3 stops32h 35m

San Sebastián

Sat 12/6

2:05 pm-6:30 pm

3 stops34h 25m

$1,161

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/7

9:45 pm-8:40 am

2 stops28h 55m

San Sebastián

Tue 11/11

9:20 am-4:30 pm

1 stop13h 10m

$1,540

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Fri 10/31

11:50 am-8:40 am

2 stops39h 50m

San Sebastián

Tue 11/4

1:40 pm-10:12 pm

2 stops38h 32m

$1,650

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Fri 10/31

9:35 pm-8:40 am

2 stops54h 05m

San Sebastián

Tue 11/4

1:40 pm-6:45 pm

2 stops35h 05m

$1,672

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Sat 12/20

8:35 pm-4:10 pm

1 stop13h 35m

San Sebastián

Sat 12/27

9:30 pm-7:25 pm

2 stops27h 55m

$2,036

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 26 results
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Compare providers for flights from Washington, D.C. to San Sebastian

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to San Sebastian in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-San Sebastian flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-San Sebastian flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-San Sebastian flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-San Sebastian flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-San Sebastian flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest time of day to fly from WAS to EAS?

Find hourly flight availability from Washington, D.C. to San Sebastian. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 17, 2025.

It’s typically best to fly out from Washington, D.C. to San Sebastian in the afternoon. Doing so could potentially save you 27% on the flight price compared to flying in the evening, which is usually more expensive.

How much does it cost to fly round-trip from Washington, D.C. to San Sebastian?

Reviews of airlines servicing San Sebastian

Get insights into the airlines that provide service to San Sebastian. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Sebastian. Reviews last updated October 17, 2025.
Read reviews from past customers who have flown American Airlines and Iberia from Washington, D.C. to San Sebastian. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,040 reviews

Overall

7.2

Comfort

7.2

Food

6.4

Boarding

7.5

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,040 reviews
American Airlines
7.2
Good
11,040 reviews

Overall

7.2

Comfort

7.2

Food

6.4

Boarding

7.5

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
Iberia
7.0
Good
2,994 reviews
American Airlines
7.2
Good
11,040 reviews

Overall

7.2

Comfort

7.2

Food

6.4

Boarding

7.5

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to San Sebastian. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Sebastian from Washington, D.C.?

    Most people fly into San Sebastián (EAS) if they book a flight to San Sebastian from Washington, D.C.. On average, San Sebastián has 0 inbound flights from Washington, D.C. per day from 1 airline. San Sebastián is conveniently located just 9.7 mi from San Sebastian’s city center.

  • How long is the flight from Washington, D.C. to San Sebastian?

    Airlines like American Airlines and Iberia fly from Washington, D.C. to San Sebastian in about 13h 10m. The time it takes to get you to your destination can typically vary by up to 45m. Airlines will cover a distance of 3791 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Washington, D.C. to San Sebastian round-trip?

    Cheapflights users have booked flights from Washington, D.C. to San Sebastian round-trip from $561. This flight start at 41% lower than the current average price 3 months from now.

  • What are the most popular routes from Washington, D.C. to San Sebastian?

    While some choose either Baltimore/Washington - San Sebastián or Washington, D.C. Dulles Intl - San Sebastián, Washington, D.C. Reagan-National - San Sebastián is the most popular route from Washington, D.C. to San Sebastian.

  • Can I find deals for flights from Washington, D.C. to San Sebastian that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to San Sebastian?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to San Sebastian.

  • Can I find deals for business class flights from Washington, D.C. to San Sebastian?

    Yes. Cheapflights offers flight deals from Washington, D.C. to San Sebastian by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Washington, D.C. to San Sebastian

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Bilbao flights
Dulles Intl to Bilbao flights
Dulles Intl to San Sebastian flights
Reagan-National to San Sebastian flights

Top airline flying from Washington, D.C. to San Sebastian

Discover the top airline that operate flights from Washington, D.C. to San Sebastian. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$561Average$1,055FlexibilityNo cancel feeOn-time77%

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