How long does it take to fly to San Sebastian?

On average, it takes 13h 52m to fly from Washington, D.C. to San Sebastian if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Bilbao (the most popular airport in San Sebastian). If you’re flying out of Baltimore and into Bilbao, then the flight time is around 18h 35m.

What airlines fly to San Sebastian?

Iberia, United Airlines and Lufthansa are the top three most popular airlines that fly to San Sebastian from Washington, D.C. according to our data. Iberia is the first choice among our users, with 34% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 5 different airlines that fly to San Sebastian on a routine basis, so you have a few additional options to choose from.

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?

There is 1 operator available for flights from Washington, D.C. to San Sebastián Airport as of October 2025.

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.

$565 Cheap Flights from Washington, D.C. to San Sebastian in 2025/26

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Cheap round-trip flights

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6:00 pm - 8:50 pmIAD-EAS

20h 50m1 stop

9:30 pm - 4:30 pmEAS-IAD

25h 00m1 stop

$572Iberia

Find Deal

Sun, Feb 8 - Mon, Feb 16

6:00 pm - 8:50 pmIAD-EAS

20h 50m1 stop

9:30 pm - 3:35 pmEAS-IAD

24h 05m2 stops

$583Iberia

Find Deal

Sun, Feb 8 - Mon, Feb 16

1:08 pm - 8:40 amIAD-EAS

13h 32m2 stops

9:30 pm - 3:35 pmEAS-IAD

24h 05m2 stops

$587American Airlines

Find Deal

Sun, Feb 8 - Mon, Feb 16

5:30 pm - 8:50 pmDCA-EAS

21h 20m2 stops

9:30 pm - 6:58 pmEAS-DCA

27h 28m2 stops

$876Iberia

Find Deal

Sun, Feb 8 - Mon, Feb 16

1:03 pm - 8:40 amDCA-EAS

13h 37m2 stops

9:30 pm - 8:13 pmEAS-DCA

28h 43m2 stops

$892American Airlines

Find Deal

Sat, Dec 13 - Sat, Dec 20

9:00 am - 1:30 pmIAD-EAS

22h 30m3 stops

2:05 pm - 2:35 pmEAS-IAD

30h 30m2 stops

$902Multiple Airlines

Find Deal

Sun, Feb 8 - Mon, Feb 16

9:45 pm - 8:40 amIAD-EAS

28h 55m2 stops

9:30 pm - 3:35 pmEAS-IAD

24h 05m2 stops

$933Iberia

Find Deal

Sat, Dec 13 - Sat, Dec 20

5:05 pm - 8:50 pmIAD-EAS

21h 45m2 stops

9:30 pm - 3:35 pmEAS-IAD

24h 05m2 stops

$936Iberia

Find Deal

Fri, Nov 14 - Tue, Nov 18

5:05 pm - 8:50 pmIAD-EAS

21h 45m2 stops

9:30 pm - 3:35 pmEAS-IAD

24h 05m2 stops

$937Iberia

Find Deal

Fri, Nov 14 - Tue, Nov 18

6:00 pm - 8:50 pmIAD-EAS

20h 50m1 stop

1:40 pm - 11:07 pmEAS-IAD

39h 27m2 stops

$1,275American Airlines

Find Deal

Fri, Nov 14 - Tue, Nov 18

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

Our best Iberia deals on Washington, D.C. to San Sebastian flight tickets

Iberia

Feb 8

IAD6:00 pmWashington, D.C. Dulles Intl

20h 50m

1 stop

EAS8:50 pmSan Sebastián

Feb 16

EAS9:30 pmSan Sebastián

25h 00m

1 stop

IAD4:30 pmWashington, D.C. Dulles Intl

$572

Find similar

Iberia

Feb 8

IAD6:00 pmWashington, D.C. Dulles Intl

20h 50m

1 stop

EAS8:50 pmSan Sebastián

Feb 16

EAS9:30 pmSan Sebastián

24h 05m

2 stops

IAD3:35 pmWashington, D.C. Dulles Intl

$583

Find similar

Iberia

Feb 8

DCA5:30 pmWashington, D.C. Reagan-National

21h 20m

2 stops

EAS8:50 pmSan Sebastián

Feb 16

EAS9:30 pmSan Sebastián

27h 28m

2 stops

DCA6:58 pmWashington, D.C. Reagan-National

$876

Find similar

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

Feb 8

IAD1:08 pmWashington, D.C. Dulles Intl

13h 32m

2 stops

EAS8:40 amSan Sebastián

Feb 16

EAS9:30 pmSan Sebastián

24h 05m

2 stops

IAD3:35 pmWashington, D.C. Dulles Intl

$587

Find similar

American Airlines

Dec 13

DCA1:03 pmWashington, D.C. Reagan-National

13h 37m

2 stops

EAS8:40 amSan Sebastián

Dec 20

EAS9:30 pmSan Sebastián

28h 43m

2 stops

DCA8:13 pmWashington, D.C. Reagan-National

$892

Find similar

American Airlines

Nov 14

IAD6:00 pmWashington, D.C. Dulles Intl

20h 50m

1 stop

EAS8:50 pmSan Sebastián

Nov 18

EAS1:40 pmSan Sebastián

39h 27m

2 stops

IAD11:07 pmWashington, D.C. Dulles Intl

$1,275

Find similar

momondo Fare Finder

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

Sun 2/8

6:00 pm-8:50 pm

1 stop20h 50m

San Sebastián

Mon 2/16

9:30 pm-4:30 pm

1 stop25h 00m

$572

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

6:00 pm-8:50 pm

1 stop20h 50m

San Sebastián

Mon 2/16

9:30 pm-3:35 pm

2 stops24h 05m

$583

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

1:08 pm-8:40 am

2 stops13h 32m

San Sebastián

Mon 2/16

9:30 pm-3:35 pm

2 stops24h 05m

$587

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Sun 2/8

5:30 pm-8:50 pm

2 stops21h 20m

San Sebastián

Mon 2/16

9:30 pm-6:58 pm

2 stops27h 28m

$876

Washington, D.C.San Sebastian

DCA - EAS

DCAEAS

Washington, D.C. Reagan-National

Sat 12/13

1:03 pm-8:40 am

2 stops13h 37m

San Sebastián

Sat 12/20

9:30 pm-8:13 pm

2 stops28h 43m

$892

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 2/8

9:00 am-1:30 pm

3 stops22h 30m

San Sebastián

Mon 2/16

2:05 pm-2:35 pm

2 stops30h 30m

$902

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sat 12/13

9:45 pm-8:40 am

2 stops28h 55m

San Sebastián

Sat 12/20

9:30 pm-3:35 pm

2 stops24h 05m

$933

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/14

5:05 pm-8:50 pm

2 stops21h 45m

San Sebastián

Tue 11/18

9:30 pm-3:35 pm

2 stops24h 05m

$936

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/14

5:05 pm-8:50 pm

2 stops21h 45m

San Sebastián

Tue 11/18

9:30 pm-3:35 pm

2 stops24h 05m

$937

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/14

6:00 pm-8:50 pm

1 stop20h 50m

San Sebastián

Tue 11/18

1:40 pm-11:07 pm

2 stops39h 27m

$1,275

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

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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

Direct flights	None

There are no direct flights from Washington, D.C. to San Sebastian. There are no popular flight routes from Washington, D.C. to San Sebastian.

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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. 12h 56m 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?
There is 1 operator available for flights from Washington, D.C. to San Sebastián Airport as of October 2025.
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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to San Sebastian is Iberia (52% of total bookings). The next most popular airline is American Airlines (48%).

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
Iberia	PriceFrom $561	Free Cancellation	Rating 7.0 3,003 reviews		Search Iberia flights

Irun

Hondarribia

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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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Cheap flights from Washington, D.C. to San Sebastian from $572

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

Our best Iberia deals on Washington, D.C. to San Sebastian flight tickets

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

Our best American Airlines deals on Washington, D.C. to San Sebastian flight tickets

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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?

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

What airlines fly to San Sebastian?

How long does it take to fly to San Sebastian?

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

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

Direct flights

How far is Washington, D.C. to San Sebastián by plane?

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

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?

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

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

Traveling to a place near San Sebastian?

Why use momondo?

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

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

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

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

An easier way to manage your San Sebastian trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Spain

Airports servicing Basque Country