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 WA to ROS?

When flying from State of Washington 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 Washington?

Rosario Fisherton (ROS) is the airport you will fly into if you book a flight from Washington 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 Washington to Rosario that include hotel bookings?

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

How can I find direct flights from Washington to Rosario?

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

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

Yes. Cheapflights offers flight deals from Washington 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.

$1,413+ Flights from Washington to Rosario

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Washington to Rosario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Rosario

Round-trip from	$1,413 (LATAM Airlines)

From Washington to Rosario Fisherton

Search Deals

Find flight deals from Washington to Rosario

Cheapest flights from Washington to Rosario
Explore the most affordable flight options available from Washington to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Tue 10/216:30 amPDX - ROS

2 stops19h 35mLATAM Airlines

Fri 10/247:30 amROS - PDX

2 stops19h 52mLATAM Airlines

Deal found 6/29

$1,413

Best flights from Washington to Rosario
Discover carefully curated flight deals from Washington to Rosario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2025.

Tue 10/216:30 amPDX - ROS

2 stops19h 35mLATAM Airlines

Fri 10/247:30 amROS - PDX

2 stops19h 52mLATAM Airlines

Deal found 6/29

$1,413

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PortlandRosario

PDX - ROS

PDXROS

Portland

Tue 10/21

6:30 am-6:05 am

2 stops19h 35m

Rosario Fisherton

Fri 10/24

7:30 am-11:22 pm

2 stops19h 52m

$1,413

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Best time to book a flight from Washington to Rosario

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

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

Reviews of airlines servicing Rosario

Get a feel of what it's like to fly with LATAM Airlines from Washington to Rosario by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

LATAM Airlines

7.5

Good

1,801 reviews

Reviews

1 / 20

4.0

Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing

LATAM Airlines

7.5

Good

1,801 reviews

LATAM Airlines

7.5

Good

1,801 reviews

Reviews

1 / 20

4.0

Okay

Murilo,Jun 2025

SFO - LAX

Related info for your journey

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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington to Rosario

Miami to Ministro Pistarini flights

John F Kennedy Intl to Ministro Pistarini flights

Miami to Jorge Newbery flights

John F Kennedy Intl to Jorge Newbery flights

Newark to Ministro Pistarini flights

LaGuardia to Ministro Pistarini flights

San Francisco to Ministro Pistarini flights

Hobby to Ministro Pistarini flights

Los Angeles to Ministro Pistarini flights

Dulles Intl to Ministro Pistarini flights

George Bush Intcntl to Ministro Pistarini flights

Los Angeles to Jorge Newbery flights

Dallas/Fort Worth to Ministro Pistarini flights

Atlanta to Ministro Pistarini flights

Reagan-National to Ministro Pistarini flights

O'Hare Intl to Ministro Pistarini flights

San Francisco to Jorge Newbery flights

Dulles Intl to Jorge Newbery flights

Baltimore to Ministro Pistarini flights

Boston to Ministro Pistarini flights

Newark to Jorge Newbery flights

Orlando to Ministro Pistarini flights

Orlando to Jorge Newbery flights

Boston to Jorge Newbery flights

Fort Lauderdale to Ministro Pistarini flights

Dallas/Fort Worth to Jorge Newbery flights

Seattle to Ministro Pistarini flights

Hobby to Jorge Newbery flights

Seattle to Jorge Newbery flights

Denver to Ministro Pistarini flights

Atlanta to Jorge Newbery flights

Miami to Mendoza flights

George Bush Intcntl to Jorge Newbery flights

Midway to Ministro Pistarini flights

Ontario to Ministro Pistarini flights

Austin to Ministro Pistarini flights

Detroit to Ministro Pistarini flights

Denver to Jorge Newbery flights

Fort Lauderdale to Jorge Newbery flights

Love Field to Ministro Pistarini flights

Raleigh to Ministro Pistarini flights

Minneapolis to Ministro Pistarini flights

Tampa to Ministro Pistarini flights

San Diego to Ministro Pistarini flights

Austin to Jorge Newbery flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$1,413+ Cheap flights from Washington 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington to Rosario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Washington to Rosario

Keep the following information in mind while searching for Washington to Rosario flight deals. Data was last updated July 1, 2025.

Round-trip from

Find flight deals from Washington to Rosario

Cheapest flights from Washington to RosarioExplore the most affordable flight options available from Washington to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Explore the most affordable flight options available from Washington to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Washington to Rosario

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

Cheapflights Insights

Everything you need to know about your flight from Washington to Rosario

Reviews of airlines servicing Rosario

Get a feel of what it's like to fly with LATAM Airlines from Washington to Rosario by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington 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?

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

How can I find direct flights from Washington to Rosario?

Can I find deals for business class flights from Washington 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 Washington to Rosario

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Washington to Rosario
Explore the most affordable flight options available from Washington to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.