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San Sebastian

$420+ Cheap flights from Washington, D.C. (WAS) to San Sebastian (EAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — EAS
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap 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 December 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/48:36 amDCA - EAS
2 stops18h 04mAmerican Airlines
Thu 12/119:20 amEAS - DCA
2 stops15h 37mAmerican Airlines
Deal found 12/3$932
This oojo deal was found by Cheapflights users on 12/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/49:00 pmIAD - EAS
2 stops41h 50mIberia
Thu 12/119:20 amEAS - IAD
1 stop13h 10mIberia
Deal found 12/3$1,126
This Mytrip deal was found by Cheapflights users on 12/3. 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.
Thu 12/49:45 amIAD - EAS
3 stops21h 45mMultiple Airlines
Thu 12/112:05 pmEAS - IAD
2 stops34h 40mMultiple Airlines
Deal found 12/3$1,389
This Mytrip deal was found by Cheapflights users on 12/3. 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.
Fri 12/59:00 amIAD - EAS
3 stops22h 30mMultiple Airlines
Mon 12/82:05 pmEAS - IAD
2 stops30h 30mMultiple Airlines
Deal found 12/3$1,467
This Iberia deal was found by Cheapflights users on 12/3. 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 12/53:25 pmDCA - EAS
2 stops15h 35mIberia
Mon 12/89:30 pmEAS - DCA
2 stops24h 55mIberia
Deal found 12/3$1,487
This KAYAK deal was found by Cheapflights users on 12/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:50 amBWI - EAS
2 stops14h 50mMultiple Airlines
Thu 12/119:20 amEAS - BWI
2 stops15h 25mMultiple Airlines
Deal found 12/3$1,497
This oojo deal was found by Cheapflights users on 12/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:45 pmIAD - EAS
2 stops17h 05mIberia
Mon 12/81:40 pmEAS - IAD
1 stop32h 50mIberia
Deal found 12/3$1,528
This Expedia deal was found by Cheapflights users on 12/3. 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.
Fri 12/58:35 pmBWI - EAS
2 stops18h 15mIberia
Mon 12/89:20 amEAS - BWI
2 stops39h 25mIberia
Deal found 12/3$1,836
This Mytrip deal was found by Cheapflights users on 12/3. 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.
Fri 12/512:55 pmDCA - EAS
3 stops18h 35mMultiple Airlines
Mon 12/82:05 pmEAS - DCA
3 stops34h 00mMultiple Airlines
Deal found 12/3$2,442

Find 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$632
(American Airlines)

One-way from

$420
(Kiwi.com)

Popular in

April

Cheapest in

January
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
One-way flight from Washington, D.C. (WAS) to San Sebastián
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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 December 4, 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

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 2/12

6:15 am-8:40 am

2 stops20h 25m

San Sebastián

Mon 2/16

9:30 pm-4:30 pm

1 stop25h 00m

$632

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Sat 5/16

9:30 pm-4:15 pm

1 stop12h 45m

San Sebastián

Tue 5/26

2:50 pm-7:40 pm

2 stops34h 50m

$671

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Thu 5/14

9:30 pm-8:40 am

2 stops29h 10m

San Sebastián

Mon 5/25

9:30 pm-7:40 pm

2 stops28h 10m

$676

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Sat 5/16

9:30 pm-4:15 pm

1 stop12h 45m

San Sebastián

Mon 5/25

9:30 pm-7:40 pm

2 stops28h 10m

$682

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 2/12

6:00 pm-1:00 pm

1 stop13h 00m

San Sebastián

Mon 2/16

9:30 pm-4:30 pm

1 stop25h 00m

$703

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sat 5/16

7:15 pm-4:15 pm

1 stop15h 00m

San Sebastián

Sat 5/23

9:10 pm-3:50 pm

2 stops24h 40m

$744

BaltimoreSan Sebastian

BWI - EAS

BWIEAS

Baltimore/Washington

Fri 5/15

9:30 pm-8:50 pm

2 stops17h 20m

San Sebastián

Mon 5/25

9:30 pm-7:40 pm

2 stops28h 10m

$751

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Thu 2/12

3:21 pm-1:00 pm

2 stops15h 39m

San Sebastián

Mon 2/16

9:30 pm-11:00 pm

2 stops31h 30m

$779

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sat 5/2

5:00 pm-8:50 pm

1 stop21h 50m

San Sebastián

Sat 5/9

9:20 am-3:30 pm

1 stop12h 10m

$806

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Sat 5/2

12:30 pm-8:40 am

2 stops14h 10m

San Sebastián

Sat 5/9

1:40 pm-10:33 pm

2 stops14h 53m

$812

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 38 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 December.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 December 4, 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.

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 December 4, 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
11,043 reviews

Overall

7.2

Food

6.5

Boarding

7.5

Crew

8.0

Comfort

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
American Airlines
7.2
Good
11,043 reviews
American Airlines
7.2
Good
11,043 reviews

Overall

7.2

Food

6.5

Boarding

7.5

Crew

8.0

Comfort

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
Iberia
7.0
Good
3,039 reviews
American Airlines
7.2
Good
11,043 reviews

Overall

7.2

Food

6.5

Boarding

7.5

Crew

8.0

Comfort

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

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, British Airways, and Iberia fly from Washington, D.C. to San Sebastian in about 12h 45m. The time it takes to get you to your destination can typically vary by up to 7h 40m. Airlines will cover a distance of 3763 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 39% 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 Washington, D.C. Reagan-National - San Sebastián or Baltimore/Washington - San Sebastián, Washington, D.C. Dulles Intl - 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

Browse thousands of different options on Cheapflights for your next trip

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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.
Dulles Intl to Bilbao flights
Reagan-National 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$561Average$1,005FlexibilityNo cancel feeOn-time77%

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