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Cheap flights from Washington, D.C. Dulles Intl Airport to San Sebastian from $315

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 10/1. 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

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.
Iberia Logo
5:00 pm - 1:00 pm
IAD
-
EAS
14h 00m
1 stop
Iberia Logo
9:20 am - 5:20 pm
EAS
-
IAD
13h 00m
1 stop
$824Iberia
Wed, Oct 21 - Fri, Oct 30
Multiple Airlines Logo
5:40 pm - 5:20 pm
IAD
-
EAS
17h 40m
2 stops
Multiple Airlines Logo
5:55 pm - 8:35 pm
EAS
-
IAD
32h 40m
2 stops
$827Multiple Airlines
Mon, Aug 17 - Tue, Sep 1
American Airlines Logo
6:15 am - 8:40 am
IAD
-
EAS
20h 25m
2 stops
American Airlines Logo
9:20 am - 5:20 pm
EAS
-
IAD
13h 00m
1 stop
$830American Airlines
Wed, Oct 21 - Fri, Oct 30
Multiple Airlines Logo
8:30 pm - 8:20 am
IAD
-
EAS
29h 50m
3 stops
Multiple Airlines Logo
5:55 pm - 3:10 pm
EAS
-
IAD
27h 15m
2 stops
$853Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Multiple Airlines Logo
8:30 pm - 8:20 am
IAD
-
EAS
29h 50m
3 stops
Multiple Airlines Logo
5:55 pm - 3:10 pm
EAS
-
IAD
27h 15m
2 stops
$864Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Multiple Airlines Logo
10:35 pm - 8:50 pm
IAD
-
EAS
16h 15m
2 stops
Multiple Airlines Logo
9:20 am - 6:50 pm
EAS
-
IAD
15h 30m
1 stop
$870Multiple Airlines
Mon, Aug 17 - Tue, Sep 1
Multiple Airlines Logo
1:23 pm - 8:40 am
IAD
-
EAS
13h 17m
2 stops
Multiple Airlines Logo
9:30 pm - 8:55 pm
EAS
-
IAD
28h 25m
2 stops
$897Multiple Airlines
Wed, Oct 21 - Fri, Oct 30
Multiple Airlines Logo
6:50 pm - 1:00 pm
IAD
-
EAS
13h 10m
1 stop
Multiple Airlines Logo
9:20 am - 4:20 pm
EAS
-
IAD
13h 00m
1 stop
$904Multiple Airlines
Thu, Oct 29 - Wed, Nov 4
Multiple Airlines Logo
5:00 pm - 8:40 am
IAD
-
EAS
33h 40m
1 stop
Multiple Airlines Logo
9:30 pm - 3:10 pm
EAS
-
IAD
23h 40m
2 stops
$907Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
American Airlines Logo
1:23 pm - 8:40 am
IAD
-
EAS
14h 17m
2 stops
American Airlines Logo
9:20 am - 4:20 pm
EAS
-
IAD
13h 00m
1 stop
$910American Airlines
Thu, Oct 29 - Wed, Nov 4

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

Our best British Airways deals on Washington, D.C. Dulles Intl Airport to San Sebastian flight tickets
British Airways
Aug 17
IAD5:00 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
EAS1:00 pmSan Sebastián
Aug 24
EAS9:30 pmSan Sebastián
29h 26m
2 stops
IAD8:56 pmWashington, D.C. Dulles Intl
$936
British Airways
Aug 24
IAD5:00 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
EAS1:00 pmSan Sebastián
Aug 31
EAS9:30 pmSan Sebastián
27h 20m
1 stop
IAD6:50 pmWashington, D.C. Dulles Intl
$949
British Airways
Sep 19
IAD5:00 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
EAS1:00 pmSan Sebastián
Sep 28
EAS9:30 pmSan Sebastián
27h 20m
1 stop
IAD6:50 pmWashington, D.C. Dulles Intl
$974

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 21
IAD6:15 amWashington, D.C. Dulles Intl
20h 25m
2 stops
EAS8:40 amSan Sebastián
Oct 30
EAS9:20 amSan Sebastián
13h 00m
1 stop
IAD5:20 pmWashington, D.C. Dulles Intl
$830
American Airlines
Oct 29
IAD1:23 pmWashington, D.C. Dulles Intl
14h 17m
2 stops
EAS8:40 amSan Sebastián
Nov 4
EAS9:20 amSan Sebastián
13h 00m
1 stop
IAD4:20 pmWashington, D.C. Dulles Intl
$910
American Airlines
Aug 19
IAD5:00 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
EAS1:00 pmSan Sebastián
Aug 26
EAS9:20 amSan Sebastián
12h 10m
1 stop
IAD3:30 pmWashington, D.C. Dulles Intl
$915

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 July 16, 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

Wed 10/21

5:00 pm-1:00 pm

1 stop14h 00m

San Sebastián

Fri 10/30

9:20 am-5:20 pm

1 stop13h 00m

$824

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 8/17

5:40 pm-5:20 pm

2 stops17h 40m

San Sebastián

Tue 9/1

5:55 pm-8:35 pm

2 stops32h 40m

$827

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 10/21

6:15 am-8:40 am

2 stops20h 25m

San Sebastián

Fri 10/30

9:20 am-5:20 pm

1 stop13h 00m

$830

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 8/24

8:30 pm-8:20 am

3 stops29h 50m

San Sebastián

Mon 8/31

5:55 pm-3:10 pm

2 stops27h 15m

$853

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 8/24

8:30 pm-8:20 am

3 stops29h 50m

San Sebastián

Mon 8/31

5:55 pm-3:10 pm

2 stops27h 15m

$864

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 8/17

10:35 pm-8:50 pm

2 stops16h 15m

San Sebastián

Tue 9/1

9:20 am-6:50 pm

1 stop15h 30m

$870

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 10/21

1:23 pm-8:40 am

2 stops13h 17m

San Sebastián

Fri 10/30

9:30 pm-8:55 pm

2 stops28h 25m

$897
Quickest round-trip

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 10/29

6:50 pm-1:00 pm

1 stop13h 10m

San Sebastián

Wed 11/4

9:20 am-4:20 pm

1 stop13h 00m

$904

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 8/24

5:00 pm-8:40 am

1 stop33h 40m

San Sebastián

Mon 8/31

9:30 pm-3:10 pm

2 stops23h 40m

$907

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Thu 10/29

1:23 pm-8:40 am

2 stops14h 17m

San Sebastián

Wed 11/4

9:20 am-4:20 pm

1 stop13h 00m

$910

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

Can stopping save me money on Washington, D.C. Dulles Intl Airport to San Sebastian flights?

You could potentially save up to 49% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to San Sebastian flight.

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

16h 25m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to San Sebastian takes 16h 25m
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

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to San Sebastian

  • 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 16h 25m.

  • 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 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.

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?

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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