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$607+ Cheap flights from Reagan-National (DCA) 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — EAS
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
1 adult, Economy
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Cheap flight deals from Reagan-National to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$607
(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.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San Sebastián flights.
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From Washington, D.C. Reagan-National to San Sebastián
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Highest demand for flights based on searches. 4% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Reagan-National to San Sebastian

Cheapest flights from Reagan-National to San Sebastian
Explore the most affordable flight options available from Reagan-National to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 13, 2025.

This Iberia deal was found by Cheapflights users on 10/12. 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.
Sun 11/305:45 pmDCA - EAS
2 stops13h 15mIberia
Tue 12/169:20 amEAS - DCA
2 stops15h 51mIberia
Deal found 10/12$809
This American Airlines deal was found by Cheapflights users on 10/10. 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 11/712:30 pmDCA - EAS
2 stops26h 20mAmerican Airlines
Tue 11/111:40 pmEAS - DCA
2 stops25h 15mAmerican Airlines
Deal found 10/10$814
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Tue 11/1110:15 amDCA - EAS
2 stops16h 25mAmerican Airlines
Tue 11/189:20 amEAS - DCA
2 stops19h 28mAmerican Airlines
Deal found 10/12$820
This SmartFares deal was found by Cheapflights users on 10/11. 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.
Wed 10/292:59 pmDCA - EAS
2 stops17h 01mIberia
Sun 11/21:40 pmEAS - DCA
2 stops35h 16mIberia
Deal found 10/11$1,322

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 13, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to San Sebastian that are best for you.

Fly from

Reagan-National

Fly to

San Sebastian

Route

Depart

Return

Price

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Tue 1/13

1:59 pm-8:40 am

2 stops12h 41m

San Sebastián

Sun 1/18

9:20 am-6:54 pm

2 stops15h 34m

$607

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Sun 11/30

1:00 pm-8:40 am

2 stops13h 40m

San Sebastián

Tue 12/16

9:20 am-7:11 pm

2 stops15h 51m

$809

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Fri 11/7

12:30 pm-8:50 pm

2 stops26h 20m

San Sebastián

Tue 11/11

1:40 pm-8:55 am

2 stops25h 15m

$814

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Tue 11/11

10:15 am-8:40 am

2 stops16h 25m

San Sebastián

Tue 11/18

9:20 am-10:48 pm

2 stops19h 28m

$820

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Fri 2/13

12:38 pm-8:50 pm

2 stops26h 12m

San Sebastián

Mon 2/16

9:30 pm-7:15 pm

2 stops27h 45m

$1,135

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Wed 10/29

2:59 pm-1:00 pm

2 stops17h 01m

San Sebastián

Sun 11/2

1:40 pm-6:56 pm

2 stops35h 16m

$1,322

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Best time to book a flight from Reagan-National to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Reagan-National 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.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

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

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

    A quick flight from Washington, D.C. Reagan-National Airport to San Sebastian can take about 12h 41m. American Airlines provides one of the quickest options available for as low as $607. The distance from Washington, D.C. Reagan-National Airport to San Sebastian is about 3791 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Reagan-National to San Sebastian that include hotel bookings?

    Yes. In addition to deals on Reagan-National to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to San Sebastian?

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

  • Can I find deals for business class flights from Reagan-National to San Sebastian?

    Yes. Cheapflights offers flight deals from Reagan-National 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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