How long is the flight from Washington, D.C. Dulles Intl Airport to Rosario?

Copa Airlines and LATAM Airlines can get you from Washington, D.C. Dulles Intl Airport to Rosario in just under 30h 45m. Your travel time can differ by up to 21h 56m. The distance between Washington, D.C. Dulles Intl Airport and Rosario is about 5075 mi. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in Rosario ranges from 1.2 - 5.9 inches per month. March is typically the wettest month, when rainfall can reach 5.9 in. July is typically the driest time to visit Rosario when rainfall is around 1.2 in.

If weather is an important factor for your trip to Rosario, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 50.0 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Rosario as you normally would.

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

Rosario Fisherton (ROS), located 6.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Rosario. 0 airlines have flights to Fisherton from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Rosario Fisherton should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

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

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

How can I find direct flights from Dulles Intl to Rosario?

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

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

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

$342+ Flights from Washington, D.C. Dulles Intl Airport to Rosario

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Cheap flight deals from Dulles Intl to Rosario

Best flights from Dulles Intl to Rosario
Discover carefully curated flight deals from Dulles Intl to Rosario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Sun 3/224:35 pmIAD - ROS

1 stop30h 45mCopa Airlines

Sat 4/41:26 amROS - IAD

1 stop27h 56mCopa Airlines

Deal found 12/10

$1,413

Sun 3/227:59 pmIAD - ROS

2 stops52h 41mLATAM Airlines

Sun 4/57:30 amROS - IAD

2 stops17h 56mLATAM Airlines

Deal found 12/10

$4,547

One-way flights from Dulles Intl to Rosario
Search for one-way flight options from Dulles Intl to Rosario. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Tue 1/133:00 pmIAD - ROS

2 stops39h 30mMultiple Airlines

Deal found 12/10

$342

Sun 1/410:51 amIAD - ROS

3 stops43h 39mMultiple Airlines

Deal found 12/10

$385

Tue 1/138:25 amIAD - ROS

1 stop13h 55mCopa Airlines

Deal found 12/10

$466

Sat 1/31:12 amIAD - ROS

1 stop21h 08mCopa Airlines

Deal found 12/10

$516

Find flight deals from Dulles Intl to Rosario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,413 (AranGrant)
One-way from	$342 (eDestinos)

Provider with most accurate pricing for Washington, D.C. (WAS)-Rosario Fisherton flight deals.

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From Washington, D.C. Dulles Intl to Rosario Fisherton

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 3/22

4:35 pm-12:20 am

1 stop30h 45m

Rosario Fisherton

Sat 4/4

1:26 am-4:22 am

1 stop27h 56m

$1,413

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 3/22

7:59 pm-1:40 am

2 stops52h 41m

Rosario Fisherton

Sun 4/5

7:30 am-12:26 am

2 stops17h 56m

$4,547

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Tue 1/13

3:00 pm-8:30 am

2 stops39h 30m

$342

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 1/4

10:51 am-8:30 am

3 stops43h 39m

$385

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Tue 1/13

8:25 am-12:20 am

1 stop13h 55m

$466

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sat 1/3

1:12 am-12:20 am

1 stop21h 08m

$516

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Best time to book a flight from Dulles Intl to Rosario

Have a flexible travel schedule? Discover the best time to fly to Rosario 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.

Related info for your journey

What airport do you fly into for flights to Rosario from Washington, D.C. Dulles Intl?
Rosario Fisherton (ROS), located 6.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Rosario. 0 airlines have flights to Fisherton from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Rosario Fisherton should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.
How long is the flight from Washington, D.C. Dulles Intl Airport to Rosario?
Copa Airlines and LATAM Airlines can get you from Washington, D.C. Dulles Intl Airport to Rosario in just under 30h 45m. Your travel time can differ by up to 21h 56m. The distance between Washington, D.C. Dulles Intl Airport and Rosario is about 5075 mi. Both multi-stop and nonstop flights can be found to your destination and back.
Can I find deals for flights from Dulles Intl to Rosario that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Rosario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Rosario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Rosario.
Can I find deals for business class flights from Dulles Intl to Rosario?
Yes. Cheapflights offers flight deals from Dulles Intl to Rosario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$342+ Cheap flights from Dulles Intl (IAD) to Rosario (ROS)

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Rosario with Cheapflights

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Cheap flight deals from Dulles Intl to Rosario

Best flights from Dulles Intl to RosarioDiscover carefully curated flight deals from Dulles Intl to Rosario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Discover carefully curated flight deals from Dulles Intl to Rosario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

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Best time to book a flight from Dulles Intl to Rosario

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Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Rosario. 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 Rosario from Washington, D.C. Dulles Intl?

How long is the flight from Washington, D.C. Dulles Intl Airport to Rosario?

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

How can I find direct flights from Dulles Intl to Rosario?

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

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Best flights from Dulles Intl to Rosario
Discover carefully curated flight deals from Dulles Intl to Rosario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.