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 DC to ROS?

When flying from District of Columbia to Rosario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Rosario from District of Columbia?

Rosario Fisherton (ROS) is the airport you will fly into if you book a flight from District of Columbia to Rosario. It is only a 6.6 mi journey from Fisherton (ROS) to Rosario’s city center.

Can I find deals for flights from District of Columbia to Rosario that include hotel bookings?

Yes. In addition to deals on District of Columbia to Rosario flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from District of Columbia to Rosario?

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

Can I find deals for business class flights from District of Columbia to Rosario?

Yes. Cheapflights offers flight deals from District of Columbia 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.

$2,300+ Flights from District of Columbia to Rosario

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Find flight deals from District of Columbia to Rosario

Cheapest flights from District of Columbia to Rosario
Explore the most affordable flight options available from District of Columbia to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Fri 12/196:10 amIAD - ROS

2 stops34h 35mMultiple Airlines

Thu 1/18:20 amROS - IAD

2 stops22h 30mMultiple Airlines

Deal found 7/30

$2,300

Fri 12/195:25 pmIAD - ROS

2 stops34h 40mLATAM Airlines

Fri 1/27:50 amROS - IAD

2 stops18h 49mLATAM Airlines

Deal found 7/30

$2,346

Fri 12/198:22 amIAD - ROS

1 stop13h 59mCopa Airlines

Wed 12/311:34 amROS - IAD

1 stop14h 26mCopa Airlines

Deal found 7/30

$3,209

Best flights from District of Columbia to Rosario
Discover carefully curated flight deals from District of Columbia to Rosario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Fri 12/196:10 amIAD - ROS

2 stops34h 35mMultiple Airlines

Thu 1/18:20 amROS - IAD

2 stops22h 30mMultiple Airlines

Deal found 7/30

$2,300

Fri 12/195:25 pmIAD - ROS

2 stops34h 40mLATAM Airlines

Fri 1/27:50 amROS - IAD

2 stops18h 49mLATAM Airlines

Deal found 7/30

$2,346

Fri 12/198:22 amIAD - ROS

1 stop13h 59mCopa Airlines

Wed 12/311:34 amROS - IAD

1 stop14h 26mCopa Airlines

Deal found 7/31

$3,209

Cheapflights Fare Finder

Use the filters below to find and compare flights from District of Columbia 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

Fri 12/19

6:10 am-6:45 pm

2 stops34h 35m

Rosario Fisherton

Thu 1/1

8:20 am-4:50 am

2 stops22h 30m

$2,300

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Fri 12/19

5:25 pm-6:05 am

2 stops34h 40m

Rosario Fisherton

Fri 1/2

7:50 am-12:39 am

2 stops18h 49m

$2,346

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Fri 12/19

8:22 am-12:21 am

1 stop13h 59m

Rosario Fisherton

Wed 12/31

1:34 am-2:00 pm

1 stop14h 26m

$3,209

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from District of Columbia to Rosario

Have a flexible travel schedule? Discover the best time to fly to Rosario from District of Columbia 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.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Rosario

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to Rosario from District of Columbia?
Rosario Fisherton (ROS) is the airport you will fly into if you book a flight from District of Columbia to Rosario. It is only a 6.6 mi journey from Fisherton (ROS) to Rosario’s city center.
Can I find deals for flights from District of Columbia to Rosario that include hotel bookings?
Yes. In addition to deals on District of Columbia to Rosario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from District of Columbia to Rosario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to Rosario.
Can I find deals for business class flights from District of Columbia to Rosario?
Yes. Cheapflights offers flight deals from District of Columbia 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.

See more FAQs

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$2,300+ Cheap flights from District of Columbia to Rosario (ROS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from District of Columbia to Rosario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from District of Columbia to Rosario

Cheapest flights from District of Columbia to RosarioExplore the most affordable flight options available from District of Columbia to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Explore the most affordable flight options available from District of Columbia to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from District of Columbia to Rosario that are best for you.

Best time to book a flight from District of Columbia to Rosario

Have a flexible travel schedule? Discover the best time to fly to Rosario from District of Columbia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Rosario

Related info for your journey

Find useful and relevant information for your journey from District of Columbia 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 District of Columbia?

Can I find deals for flights from District of Columbia to Rosario that include hotel bookings?

How can I find direct flights from District of Columbia to Rosario?

Can I find deals for business class flights from District of Columbia to Rosario?

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 District of Columbia to Rosario

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Cheapest flights from District of Columbia to Rosario
Explore the most affordable flight options available from District of Columbia to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.