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Cheap flights from Washington, D.C. Dulles Intl Airport to San Sebastian from $371

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 4/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:20 pm - 8:20 am
IAD
-
EAS
30h 00m
3 stops
Multiple Airlines Logo
5:55 pm - 5:00 pm
EAS
-
IAD
29h 05m
3 stops
$874Multiple Airlines
Sa, Apr 25 - Sa, Mai 2
Iberia Logo
5:00 pm - 1:00 pm
IAD
-
EAS
14h 00m
1 stop
Iberia Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$883Iberia
Mo, Mai 4 - Mo, Mai 11
Multiple Airlines Logo
6:25 am - 8:40 am
IAD
-
EAS
20h 15m
2 stops
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$887Multiple Airlines
Mo, Mai 4 - Mo, Mai 11
Iberia Logo
5:59 pm - 8:50 pm
IAD
-
EAS
20h 51m
2 stops
Iberia Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$911Iberia
Mo, Mai 4 - Mo, Mai 11
Multiple Airlines Logo
5:00 pm - 1:00 pm
IAD
-
EAS
14h 00m
1 stop
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$933Multiple Airlines
Mo, Mai 4 - Mo, Mai 11
Multiple Airlines Logo
5:00 pm - 8:20 am
IAD
-
EAS
33h 20m
2 stops
Multiple Airlines Logo
5:55 pm - 3:30 pm
EAS
-
IAD
27h 35m
2 stops
$936Multiple Airlines
Sa, Apr 25 - Sa, Mai 2
Multiple Airlines Logo
6:25 am - 8:40 am
IAD
-
EAS
20h 15m
2 stops
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$937Multiple Airlines
Mo, Mai 4 - Mo, Mai 11
Iberia Logo
5:59 pm - 8:40 am
IAD
-
EAS
56h 41m
2 stops
Iberia Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$960Iberia
Sa, Apr 25 - Sa, Mai 2
Multiple Airlines Logo
10:35 pm - 8:20 am
IAD
-
EAS
27h 45m
2 stops
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$990Multiple Airlines
Sa, Apr 25 - Sa, Mai 2
Multiple Airlines Logo
9:19 am - 8:40 am
IAD
-
EAS
17h 21m
2 stops
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
IAD
24h 00m
1 stop
$1,000Multiple Airlines
Do, Apr 23 - Do, Apr 30

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
May 4
IAD5:00 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
EAS1:00 pmSan Sebastián
May 11
EAS9:30 pmSan Sebastián
24h 00m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$883
Iberia
May 4
IAD5:59 pmWashington, D.C. Dulles Intl
20h 51m
2 stops
EAS8:50 pmSan Sebastián
May 11
EAS9:30 pmSan Sebastián
24h 00m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$911
Iberia
Apr 25
IAD5:59 pmWashington, D.C. Dulles Intl
56h 41m
2 stops
EAS8:40 amSan Sebastián
May 2
EAS9:30 pmSan Sebastián
24h 00m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$960

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
Apr 6
IAD9:19 amWashington, D.C. Dulles Intl
17h 21m
2 stops
EAS8:40 amSan Sebastián
Apr 26
EAS1:40 pmSan Sebastián
31h 50m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$1,217
American Airlines
May 24
IAD5:00 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
EAS1:00 pmSan Sebastián
Jun 3
EAS9:20 amSan Sebastián
12h 10m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$1,317
American Airlines
May 24
IAD9:20 amWashington, D.C. Dulles Intl
17h 20m
2 stops
EAS8:40 amSan Sebastián
Jun 3
EAS9:20 amSan Sebastián
12h 10m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$1,321

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 März 13, 2026.
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

Cheapest round-trip

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sa 4/25

8:20 pm-8:20 am

3 stops30h 00m

San Sebastián

Sa 5/2

5:55 pm-5:00 pm

3 stops29h 05m

$874
Quickest round-trip

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mo 5/4

5:00 pm-1:00 pm

1 stop14h 00m

San Sebastián

Mo 5/11

9:30 pm-3:30 pm

1 stop24h 00m

$883

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mo 5/4

6:25 am-8:40 am

2 stops20h 15m

San Sebastián

Mo 5/11

9:30 pm-3:30 pm

1 stop24h 00m

$887

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mo 5/4

5:59 pm-8:50 pm

2 stops20h 51m

San Sebastián

Mo 5/11

9:30 pm-3:30 pm

1 stop24h 00m

$911

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mo 5/4

5:00 pm-1:00 pm

1 stop14h 00m

San Sebastián

Mo 5/11

9:30 pm-3:30 pm

1 stop24h 00m

$933

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sa 4/25

5:00 pm-8:20 am

2 stops33h 20m

San Sebastián

Sa 5/2

5:55 pm-3:30 pm

2 stops27h 35m

$936

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mo 5/4

6:25 am-8:40 am

2 stops20h 15m

San Sebastián

Mo 5/11

9:30 pm-3:30 pm

1 stop24h 00m

$937

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sa 4/25

5:59 pm-8:40 am

2 stops56h 41m

San Sebastián

Sa 5/2

9:30 pm-3:30 pm

1 stop24h 00m

$960

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sa 4/25

10:35 pm-8:20 am

2 stops27h 45m

San Sebastián

Sa 5/2

9:30 pm-3:30 pm

1 stop24h 00m

$990

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Do 4/23

9:19 am-8:40 am

2 stops17h 21m

San Sebastián

Do 4/30

9:30 pm-3:30 pm

1 stop24h 00m

$1,000

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 airlines fly to San Sebastian?

United Airlines, Iberia and Lufthansa are the top three most popular airlines that fly to San Sebastian from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 4 different airlines that fly to San Sebastian on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time

13h 24m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to San Sebastian takes 13h 24m
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.
Search flight deals

  • 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 13h 24m.

  • 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
3,134 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?

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?

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