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Cheap flights from Washington, D.C. Dulles Intl Airport to San Sebastian from $506

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. Dulles Intl Airport to San Sebastian departing on 2/28. 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. Dulles Intl Airport to San Sebastian

Cheap round-trip flights

American Airlines Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
American Airlines Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$570American Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 22
American Airlines Logo
1:09 pm - 8:40 amIAD-EAS
13h 31m2 stops
American Airlines Logo
9:20 am - 3:00 pmEAS-IAD
11h 40m1 stop
$574American Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 22
Iberia Logo
7:00 pm - 8:50 pmIAD-EAS
20h 50m1 stop
Iberia Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$632Iberia
Find Deal
Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
2:18 pm - 8:40 amIAD-EAS
13h 22m2 stops
American Airlines Logo
9:20 am - 4:30 pmEAS-IAD
13h 10m1 stop
$647American Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Iberia Logo
4:35 pm - 8:40 amIAD-EAS
10h 05m1 stop
Iberia Logo
9:30 pm - 4:35 pmEAS-IAD
24h 05m2 stops
$680Iberia
Find Deal
Wed, Oct 22 - Mon, Oct 27
Logo
2:18 pm - 8:40 amIAD-EAS
13h 22m2 stops
Logo
9:30 pm - 11:07 pmEAS-IAD
31h 37m2 stops
$696
Find Deal
Thu, Oct 30 - Thu, Nov 6
Logo
9:45 am - 5:20 pmIAD-EAS
25h 35m2 stops
Logo
2:05 pm - 5:40 pmEAS-IAD
32h 35m2 stops
$740
Find Deal
Wed, Oct 22 - Mon, Oct 27
Logo
4:35 pm - 8:50 pmIAD-EAS
22h 15m1 stop
Logo
9:30 pm - 3:00 pmEAS-IAD
23h 30m1 stop
$743
Find Deal
Mon, Oct 6 - Wed, Oct 22
Iberia Logo
6:20 pm - 8:50 pmIAD-EAS
20h 30m2 stops
Iberia Logo
9:30 pm - 3:35 pmEAS-IAD
24h 05m2 stops
$822Iberia
Find Deal
Fri, Nov 7 - Tue, Nov 11
Iberia Logo
5:05 pm - 8:50 pmIAD-EAS
21h 45m2 stops
Iberia Logo
9:30 pm - 3:35 pmEAS-IAD
24h 05m2 stops
$823Iberia
Find Deal
Fri, Nov 7 - Tue, Nov 11

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to San Sebastian flight tickets
American Airlines
Oct 6
IAD4:35 pmWashington, D.C. Dulles Intl
10h 05m
1 stop
EAS8:40 amSan Sebastián
Oct 22
EAS9:20 amSan Sebastián
11h 40m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
$570
Find similar
American Airlines
Oct 6
IAD1:09 pmWashington, D.C. Dulles Intl
13h 31m
2 stops
EAS8:40 amSan Sebastián
Oct 22
EAS9:20 amSan Sebastián
11h 40m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
$574
Find similar
American Airlines
Oct 30
IAD2:18 pmWashington, D.C. Dulles Intl
13h 22m
2 stops
EAS8:40 amSan Sebastián
Nov 6
EAS9:20 amSan Sebastián
13h 10m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
$647
Find similar

Iberia flights from Washington, D.C. Dulles Intl Airport to San Sebastian

Our best Iberia deals on Washington, D.C. Dulles Intl Airport to San Sebastian flight tickets
Iberia
Oct 30
IAD7:00 pmWashington, D.C. Dulles Intl
20h 50m
1 stop
EAS8:50 pmSan Sebastián
Nov 6
EAS9:20 amSan Sebastián
13h 10m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
$632
Find similar
Iberia
Oct 22
IAD4:35 pmWashington, D.C. Dulles Intl
10h 05m
1 stop
EAS8:40 amSan Sebastián
Oct 27
EAS9:30 pmSan Sebastián
24h 05m
2 stops
IAD4:35 pmWashington, D.C. Dulles Intl
$680
Find similar
Iberia
Nov 7
IAD6:20 pmWashington, D.C. Dulles Intl
20h 30m
2 stops
EAS8:50 pmSan Sebastián
Nov 11
EAS9:30 pmSan Sebastián
24h 05m
2 stops
IAD3:35 pmWashington, D.C. Dulles Intl
$822
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 September 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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 10/6

4:35 pm-8:40 am

1 stop10h 05m

San Sebastián

Wed 10/22

9:20 am-3:00 pm

1 stop11h 40m

$570

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 10/6

1:09 pm-8:40 am

2 stops13h 31m

San Sebastián

Wed 10/22

9:20 am-3:00 pm

1 stop11h 40m

$574

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 10/30

7:00 pm-8:50 pm

1 stop20h 50m

San Sebastián

Thu 11/6

9:20 am-4:30 pm

1 stop13h 10m

$632

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 10/30

2:18 pm-8:40 am

2 stops13h 22m

San Sebastián

Thu 11/6

9:20 am-4:30 pm

1 stop13h 10m

$647

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 10/22

4:35 pm-8:40 am

1 stop10h 05m

San Sebastián

Mon 10/27

9:30 pm-4:35 pm

2 stops24h 05m

$680

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 10/30

2:18 pm-8:40 am

2 stops13h 22m

San Sebastián

Thu 11/6

9:30 pm-11:07 pm

2 stops31h 37m

$696

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 10/22

9:45 am-5:20 pm

2 stops25h 35m

San Sebastián

Mon 10/27

2:05 pm-5:40 pm

2 stops32h 35m

$740

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 10/6

4:35 pm-8:50 pm

1 stop22h 15m

San Sebastián

Wed 10/22

9:30 pm-3:00 pm

1 stop23h 30m

$743

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/7

6:20 pm-8:50 pm

2 stops20h 30m

San Sebastián

Tue 11/11

9:30 pm-3:35 pm

2 stops24h 05m

$822

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 11/7

5:05 pm-8:50 pm

2 stops21h 45m

San Sebastián

Tue 11/11

9:30 pm-3:35 pm

2 stops24h 05m

$823

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to San Sebastian (IAD to EAS) flight deals and tips

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

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to San Sebastian. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to San Sebastian.
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  • How far is Washington, D.C. Dulles Intl to San Sebastián by plane?

    Washington, D.C. Dulles Intl and San Sebastián are 3799.5 mi apart from one another. A reasonable flight in good conditions will take 10h 05m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to San Sebastián Airport are refreshed on a daily basis.

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

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

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $561Free CancellationRating
7.0
2,928 reviews
Search Iberia flights

Traveling to a place near San Sebastian?

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Hondarribia

Why use momondo?

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

It is quick and easy to find Washington, D.C. to San Sebastian flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Sebastian that suits you.

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?

Once all potential Washington, D.C. to San Sebastian flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to San Sebastian from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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