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$737+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — EAS
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
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 November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$737
(American Airlines)

Popular in

April

Cheapest in

January

Average price

$842
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. 7% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 26, 2025.

This SmartFares deal was found by Cheapflights users on 11/24. 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.
Tue 12/303:25 pmDCA - EAS
2 stops15h 35mIberia
Sat 1/31:40 pmEAS - DCA
2 stops34h 43mIberia
Deal found 11/24$2,689
This Mytrip deal was found by Cheapflights users on 11/24. 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.
Tue 12/3011:05 amDCA - EAS
2 stops20h 25mMultiple Airlines
Sat 1/32:05 pmEAS - DCA
3 stops31h 26mMultiple Airlines
Deal found 11/24$3,196

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 November 26, 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

Wed 2/11

1:44 pm-8:40 am

2 stops12h 56m

San Sebastián

Sun 2/15

9:20 am-10:00 pm

2 stops18h 40m

$737

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Thu 1/8

1:35 pm-8:40 am

2 stops13h 05m

San Sebastián

Thu 1/15

9:30 pm-5:08 pm

2 stops25h 38m

$747

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Wed 1/21

12:35 pm-8:40 am

2 stops14h 05m

San Sebastián

Sun 1/25

9:20 am-10:03 pm

2 stops18h 43m

$807

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Sat 5/16

5:09 pm-1:00 pm

2 stops37h 51m

San Sebastián

Sun 5/24

9:30 pm-8:48 pm

2 stops29h 18m

$907

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Mon 3/16

5:00 pm-1:00 pm

2 stops15h 00m

San Sebastián

Fri 3/20

9:20 am-9:30 pm

2 stops17h 10m

$1,457

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Tue 12/30

3:25 pm-1:00 pm

2 stops15h 35m

San Sebastián

Sat 1/3

1:40 pm-6:23 pm

2 stops34h 43m

$2,689

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Tue 12/30

11:05 am-1:30 pm

2 stops20h 25m

San Sebastián

Sat 1/3

2:05 pm-3:31 pm

3 stops31h 26m

$3,196

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/24

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 56m. American Airlines provides one of the quickest options available for as low as $737. 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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