What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to San Sebastian round-trip?

Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to San Sebastian round-trip from $732. Other airlines that can offer you cheap pricing are American Airlines, from $761, and Avianca, from $1,810.

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to San Sebastian one-way?

$533 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on American Airlines and British Airways, with prices starting from $689 and $1,024, respectively.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to San Sebastian?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to San Sebastian flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to San Sebastian?

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 55% when planning your travel around this day of the week.

What is the cheapest time of day to fly from IAD to EAS?

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to San Sebastian is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 23% on airfare.

What airport do you fly into for flights to San Sebastian from Washington, D.C. Dulles Intl?

Located just 9.7 mi from the city center, San Sebastián is the airport most travelers will use when flying to San Sebastian from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to San Sebastián (EAS) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 1 airline.

Can I find deals for flights from Dulles Intl to San Sebastian that include hotel bookings?

Yes. In addition to deals on Dulles Intl to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to San Sebastian?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to San Sebastian.

Can I find deals for business class flights from Dulles Intl to San Sebastian?

Yes. Cheapflights offers flight deals from Dulles Intl to San Sebastian by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$390+ Flights from Washington, D.C. Dulles Intl Airport to San Sebastian

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Cheap flight deals from Dulles Intl to San Sebastian

Round-trip from	$732 (Iberia)
One-way from	$533 (Iberia)

From Washington, D.C. Dulles Intl to San Sebastián

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One-way flight from Washington, D.C. Dulles Intl to San Sebastián

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Find flight deals from Dulles Intl to San Sebastian

Cheapest flights from Dulles Intl to San Sebastian
Explore the most affordable flight options available from Dulles Intl to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

Wed 10/14:35 pmIAD - EAS

1 stop10h 05mIberia

Thu 10/99:20 amEAS - IAD

1 stop11h 40mIberia

Deal found 6/18

$561

Wed 9/244:35 pmIAD - EAS

1 stop10h 05mAmerican Airlines

Sun 9/281:40 pmEAS - IAD

1 stop31h 20mAmerican Airlines

Deal found 6/18

$627

Mon 8/119:45 amIAD - EAS

2 stops21h 10mMultiple Airlines

Thu 8/219:05 amEAS - IAD

2 stops17h 56mMultiple Airlines

Deal found 6/16

$768

Sun 8/173:25 pmIAD - EAS

2 stops23h 25mAvianca

Fri 8/229:20 amEAS - IAD

2 stops34h 40mAvianca

Deal found 6/18

$1,810

Best flights from Dulles Intl to San Sebastian
Discover carefully curated flight deals from Dulles Intl to San Sebastian that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2025.

Sun 7/274:35 pmIAD - EAS

1 stop10h 05mIberia

Mon 8/49:20 amEAS - IAD

1 stop11h 40mIberia

Deal found 6/15

$732

Thu 9/412:04 pmIAD - EAS

2 stops14h 36mAmerican Airlines

Tue 9/99:20 amEAS - IAD

1 stop11h 40mAmerican Airlines

Deal found 6/18

$761

Mon 8/119:45 amIAD - EAS

2 stops21h 10mMultiple Airlines

Thu 8/219:05 amEAS - IAD

2 stops17h 56mMultiple Airlines

Deal found 6/16

$768

Sun 8/173:25 pmIAD - EAS

2 stops23h 25mAvianca

Fri 8/229:20 amEAS - IAD

2 stops34h 40mAvianca

Deal found 6/18

$1,810

Last-minute flights from Dulles Intl to San Sebastian
Discover last-minute flight deals from Dulles Intl to San Sebastian. Data last updated June 18, 2025 and is based on user searches.

Wed 7/28:45 pmIAD - EAS

3 stops29h 45mMultiple Airlines

Sun 7/68:35 amEAS - IAD

2 stops33h 10mMultiple Airlines

Deal found 6/17

$1,478

Sun 7/274:35 pmIAD - EAS

1 stop10h 05mIberia

Mon 8/49:20 amEAS - IAD

1 stop11h 40mIberia

Deal found 6/15

$732

One-way flights from Dulles Intl to San Sebastian
Search for one-way flight options from Dulles Intl to San Sebastian. Find affordable one-way fares based on user searches. Data last updated June 18, 2025.

Wed 7/94:35 pmIAD - EAS

1 stop10h 05mIberia

Deal found 6/18

$533

Sun 7/1311:49 amIAD - EAS

2 stops27h 01mAmerican Airlines

Deal found 6/18

$689

Sun 7/67:25 pmIAD - EAS

2 stops36h 40mBritish Airways

Deal found 6/18

$1,024

Cheapflights Fare Finder

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

Wed 10/1

4:35 pm-8:40 am

1 stop10h 05m

San Sebastián

Thu 10/9

9:20 am-3:00 pm

1 stop11h 40m

$561

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

1:40 pm-3:00 pm

1 stop31h 20m

$627

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Mon 8/11

9:45 am-12:55 pm

2 stops21h 10m

San Sebastián

Thu 8/21

9:05 am-9:01 pm

2 stops17h 56m

$768

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 8/17

3:25 pm-8:50 pm

2 stops23h 25m

San Sebastián

Fri 8/22

9:20 am-2:00 pm

2 stops34h 40m

$1,810

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Fri 8/1

9:58 pm-8:10 am

3 stops52h 12m

$390

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Wed 7/9

4:35 pm-8:40 am

1 stop10h 05m

$533

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 7/13

11:49 am-8:50 pm

2 stops27h 01m

$689

Washington, D.C.San Sebastian

IAD - EAS

IADEAS

Washington, D.C. Dulles Intl

Sun 7/6

7:25 pm-2:05 pm

2 stops36h 40m

$1,024

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

Best time to book a flight from Dulles Intl to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Dulles Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing San Sebastian

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.

American Airlines

7.2

Good

10,000 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.

Iberia

7.0

Good

2,778 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.

Avianca

6.7

Okay

2,350 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.

British Airways

6.6

Okay

7,031 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.

Related info for your journey

What airport do you fly into for flights to San Sebastian from Washington, D.C. Dulles Intl?
Located just 9.7 mi from the city center, San Sebastián is the airport most travelers will use when flying to San Sebastian from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to San Sebastián (EAS) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 1 airline.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to San Sebastian round-trip?
Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to San Sebastian round-trip from $732. Other airlines that can offer you cheap pricing are American Airlines, from $761, and Avianca, from $1,810.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to San Sebastian one-way?
$533 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on American Airlines and British Airways, with prices starting from $689 and $1,024, respectively.
Can I find deals for flights from Dulles Intl to San Sebastian that include hotel bookings?
Yes. In addition to deals on Dulles Intl to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to San Sebastian?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to San Sebastian.
Can I find deals for business class flights from Dulles Intl to San Sebastian?
Yes. Cheapflights offers flight deals from Dulles Intl to San Sebastian by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to San Sebastian

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Reagan-National to San Sebastian flights

Baltimore to San Sebastian flights

Top airline flying from Dulles Intl to San Sebastian

Airline	Cheapest	Average	Flexibility	On-time
Iberia	Cheapest$617	Average$1,055	FlexibilityNo cancel fee	On-time77%

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$390+ Cheap flights from Dulles Intl (IAD) to San Sebastian (EAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to San Sebastian with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Dulles Intl to San Sebastian

Round-trip from

One-way from

Find flight deals from Dulles Intl to San Sebastian

Cheapest flights from Dulles Intl to San SebastianExplore the most affordable flight options available from Dulles Intl to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

Explore the most affordable flight options available from Dulles Intl to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Sebastian that are best for you.

Best time to book a flight from Dulles Intl to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Dulles Intl with our price prediction graph.

Reviews of airlines servicing San Sebastian

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to San Sebastian. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to San Sebastian from Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to San Sebastian round-trip?

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to San Sebastian one-way?

Can I find deals for flights from Dulles Intl to San Sebastian that include hotel bookings?

How can I find direct flights from Dulles Intl to San Sebastian?

Can I find deals for business class flights from Dulles Intl to San Sebastian?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to San Sebastian

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Dulles Intl to San Sebastian

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Cheapest flights from Dulles Intl to San Sebastian
Explore the most affordable flight options available from Dulles Intl to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.