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Cheap flights from Washington, D.C. to San Sebastian from $363

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to San Sebastian departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to San Sebastian

Cheap round-trip flights

Iberia Logo
9:45 pm - 8:40 amIAD-EAS
28h 55m2 stops
Iberia Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$571Iberia
Find Deal
Mon, Nov 24 - Thu, Dec 4
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 3:00 pmEAS-IAD
23h 30m1 stop
$627Iberia
Find Deal
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
Wed, Sep 24 - Sun, Sep 28
American Airlines Logo
1:15 pm - 8:40 amDCA-EAS
13h 25m2 stops
American Airlines Logo
9:20 am - 10:00 pmEAS-DCA
18h 40m2 stops
$632American Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 12
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 3:00 pmEAS-IAD
23h 30m1 stop
$650Iberia
Find Deal
Wed, Sep 17 - Sun, Sep 21
American Airlines Logo
3:59 pm - 1:00 pmDCA-EAS
15h 01m2 stops
American Airlines Logo
9:20 am - 6:54 pmEAS-DCA
15h 34m2 stops
$657American Airlines
Find Deal
Mon, Nov 24 - Thu, Dec 4
Iberia Logo
1:15 pm - 8:40 amDCA-EAS
13h 25m2 stops
Iberia Logo
9:30 pm - 11:07 pmEAS-DCA
31h 37m2 stops
$717Iberia
Find Deal
Wed, Sep 24 - Sun, Sep 28
Iberia Logo
1:15 pm - 8:40 amDCA-EAS
13h 25m2 stops
Iberia Logo
9:30 pm - 11:07 pmEAS-DCA
31h 37m2 stops
$718Iberia
Find Deal
Wed, Sep 24 - Sun, Sep 28
American Airlines Logo
2:00 pm - 8:50 pmDCA-EAS
24h 50m2 stops
American Airlines Logo
1:40 pm - 4:51 pmEAS-DCA
33h 11m2 stops
$838American Airlines
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Fri, Nov 7 - Tue, Nov 11
Logo
4:35 pm - 8:50 amIAD-EAS
34h 15m2 stops
Logo
5:55 pm - 3:00 pmEAS-IAD
27h 05m2 stops
$938
Find Deal
Fri, Sep 12 - Fri, Sep 19

American Airlines flights from Washington, D.C. to San Sebastian

Our best American Airlines deals on Washington, D.C. to San Sebastian flight tickets
American Airlines
Oct 1
DCA1:15 pmWashington, D.C. Reagan-National
13h 25m
2 stops
EAS8:40 amSan Sebastián
Oct 12
EAS9:20 amSan Sebastián
18h 40m
2 stops
DCA10:00 pmWashington, D.C. Reagan-National
$632
Find similar
American Airlines
Nov 24
DCA3:59 pmWashington, D.C. Reagan-National
15h 01m
2 stops
EAS1:00 pmSan Sebastián
Dec 4
EAS9:20 amSan Sebastián
15h 34m
2 stops
DCA6:54 pmWashington, D.C. Reagan-National
$657
Find similar
American Airlines
Nov 7
DCA2:00 pmWashington, D.C. Reagan-National
24h 50m
2 stops
EAS8:50 pmSan Sebastián
Nov 11
EAS1:40 pmSan Sebastián
33h 11m
2 stops
DCA4:51 pmWashington, D.C. Reagan-National
$838
Find similar

Iberia flights from Washington, D.C. to San Sebastian

Our best Iberia deals on Washington, D.C. to San Sebastian flight tickets
Iberia
Nov 24
IAD9:45 pmWashington, D.C. Dulles Intl
28h 55m
2 stops
EAS8:40 amSan Sebastián
Dec 4
EAS9:20 amSan Sebastián
13h 10m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
$571
Find similar
Iberia
Sep 24
IAD4:35 pmWashington, D.C. Dulles Intl
10h 05m
1 stop
EAS8:40 amSan Sebastián
Sep 28
EAS9:30 pmSan Sebastián
23h 30m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
$627
Find similar
Iberia
Sep 24
IAD4:35 pmWashington, D.C. Dulles Intl
10h 05m
1 stop
EAS8:40 amSan Sebastián
Sep 28
EAS9:30 pmSan Sebastián
23h 30m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
$628
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 11/24

9:45 pm-8:40 am

2 stops28h 55m

San Sebastián

Thu 12/4

9:20 am-4:30 pm

1 stop13h 10m

$571

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 9/24

4:35 pm-8:40 am

1 stop10h 05m

San Sebastián

Sun 9/28

9:30 pm-3:00 pm

1 stop23h 30m

$627

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 9/24

4:35 pm-8:40 am

1 stop10h 05m

San Sebastián

Sun 9/28

9:30 pm-3:00 pm

1 stop23h 30m

$628

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Wed 10/1

1:15 pm-8:40 am

2 stops13h 25m

San Sebastián

Sun 10/12

9:20 am-10:00 pm

2 stops18h 40m

$632

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 9/17

4:35 pm-8:40 am

1 stop10h 05m

San Sebastián

Sun 9/21

9:30 pm-3:00 pm

1 stop23h 30m

$650

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Mon 11/24

3:59 pm-1:00 pm

2 stops15h 01m

San Sebastián

Thu 12/4

9:20 am-6:54 pm

2 stops15h 34m

$657

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Wed 9/24

1:15 pm-8:40 am

2 stops13h 25m

San Sebastián

Sun 9/28

9:30 pm-11:07 pm

2 stops31h 37m

$717

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Wed 9/24

1:15 pm-8:40 am

2 stops13h 25m

San Sebastián

Sun 9/28

9:30 pm-11:07 pm

2 stops31h 37m

$718

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Fri 11/7

2:00 pm-8:50 pm

2 stops24h 50m

San Sebastián

Tue 11/11

1:40 pm-4:51 pm

2 stops33h 11m

$838

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 9/12

4:35 pm-8:50 am

2 stops34h 15m

San Sebastián

Fri 9/19

5:55 pm-3:00 pm

2 stops27h 05m

$938

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Sebastian from

How to get the cheapest flight ticket from Washington, D.C. to San Sebastian

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Sebastian?

On average, the least expensive day to fly to San Sebastian from Washington, D.C. is on a Thursday. momondo users have found tickets for Thursday departures for as low as $702. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to San Sebastian for around $1,191.

What is the cheapest time of day to depart on your flight to San Sebastian?

Flying to San Sebastian from Washington, D.C. in the evening is the least expensive time of day to depart. momondo users have found prices as low as $957 when looking at flights departing in the evening. Flights to San Sebastian are more costly in the afternoon, with an average ticket price of $1,087. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Washington, D.C. to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to San Sebastian according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to San Sebastian (WAS to EAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to San Sebastian

Best Price Found

$363

Fastest flight time

10h 05m

Direct flights

None

Airports in San Sebastian

1 airport
The best one-way flight to San Sebastian from Washington, D.C. in the past 72 hours is $363. The best round-trip flight deal from Washington, D.C. to San Sebastian found on momondo in the last 72 hours is $571.
The fastest flight from Washington, D.C. to San Sebastian takes 10h 05m
There are no direct flights from Washington, D.C. to San Sebastian. Popular non-direct routes for this connection are Washington, D.C. Dulles Intl Airport - San Sebastián Airport, Baltimore/Washington Airport - San Sebastián Airport and Washington, D.C. Reagan-National Airport - San Sebastián Airport.
There is 1 airport near San Sebastian: San Sebastián (EAS)
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  • How far is Washington, D.C. to San Sebastián by plane?

    The straight-line distance from Washington, D.C. to San Sebastián is 3781.9 mi. 10h 05m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to San Sebastián Airport?

    Prices for flights from Washington, D.C. to San Sebastián Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to San Sebastián Airport?

  • How old do you have to be to fly from Washington, D.C. to San Sebastián Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to San Sebastián Airport.

  • What documentation or ID do you need to fly to San Sebastián Airport?

    The travel and health documents you'll need for your trip to San Sebastián Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Sebastián Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. to San Sebastian?

Best airlines flying from Washington, D.C. to San Sebastian

Compare and see reviews for airlines that fly from Washington, D.C. to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $561Free CancellationRating
7.0
2,859 reviews
Search Iberia flights

Traveling to a place near San Sebastian?

Book flights to San Sebastian if you plan to visit one of these locations
Irun
Hondarribia

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to San Sebastian?

Finding the right flight to San Sebastian from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Sebastian quick and easy, saving you time and money.

Can I find flights from Washington, D.C. to San Sebastian with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to San Sebastian flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to San Sebastian?

momondo provides multiple filters to help you find the best flight to San Sebastian from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to San Sebastian right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Sebastian from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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