What is the cheapest airline to fly from Washington, D.C. to Rosario round-trip?

Flying on American Airlines is currently your cheapest option to Rosario, with prices starting at $1,438.

What is the cheapest day to fly from Washington, D.C. to Rosario?

Travelers seeking maximum savings on their Washington, D.C. to Rosario flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from Washington, D.C. to Rosario?

The most popular route from Washington, D.C. to Rosario is Washington, D.C. Dulles Intl - Rosario Fisherton. You may also consider Washington, D.C. Reagan-National - Rosario Fisherton or Baltimore/Washington - Rosario Fisherton.

What is the cheapest day to fly round-trip from Washington, D.C. to Rosario?

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 57% when planning your travel around this day of the week.

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

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Rosario in the morning. If you’re flexible enough to do this you can expect to save up to 2% on your trip compared to booking a flight at noon.

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

Rosario Fisherton (ROS) is the airport you will fly into if you book a flight from Washington, D.C. to Rosario. You should not have trouble finding flights to Fisherton from Washington, D.C.; the airport handles an average of 0 inbound flights from Washington, D.C. per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Rosario airport from Washington, D.C.. It is only a 6.6 mi journey from Fisherton (ROS) to Rosario’s city center.

Can I find deals for flights from Washington, D.C. to Rosario that include hotel bookings?

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

How can I find direct flights from Washington, D.C. to Rosario?

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

Can I find deals for business class flights from Washington, D.C. to Rosario?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$1,347+ Flights from Washington, D.C. to Rosario

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Cheap flight deals from Washington, D.C. to Rosario

Round-trip from	$1,438 (American Airlines)

From Washington, D.C. (WAS) to Rosario Fisherton

Search Deals

Find flight deals from Washington, D.C. to Rosario

Cheapest flights from Washington, D.C. to Rosario
Explore the most affordable flight options available from Washington, D.C. to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Sun 6/1510:05 pmIAD - ROS

2 stops54h 54mMultiple Airlines

Sun 6/227:30 amROS - IAD

2 stops18h 02mMultiple Airlines

Deal found 6/10

$1,347

Sat 6/142:21 amIAD - ROS

1 stop20h 52mCopa Airlines

Sat 6/211:21 amROS - IAD

1 stop14h 43mCopa Airlines

Deal found 6/10

$1,381

Sun 6/157:49 pmBWI - ROS

3 stops53h 16mAmerican Airlines

Sat 6/213:00 amROS - BWI

2 stops40h 26mAmerican Airlines

Deal found 6/10

$1,438

Fri 12/1912:30 pmIAD - ROS

2 stops39h 40mLATAM Airlines

Fri 1/27:30 amROS - IAD

2 stops35h 16mLATAM Airlines

Deal found 6/11

$1,500

Sun 6/156:50 amBWI - ROS

3 stops23h 55mMultiple Airlines

Sun 6/227:30 amROS - BWI

3 stops40h 27mMultiple Airlines

Deal found 6/10

$1,711

Fri 12/1911:30 amIAD - ROS

2 stops36h 35mAmerican Airlines

Thu 1/12:55 amROS - IAD

2 stops39h 18mAmerican Airlines

Deal found 6/10

$3,320

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

Sun 6/157:49 pmBWI - ROS

3 stops53h 16mAmerican Airlines

Sat 6/213:00 amROS - BWI

2 stops40h 26mAmerican Airlines

Deal found 6/10

$1,438

Sun 6/156:50 amBWI - ROS

3 stops23h 55mMultiple Airlines

Sun 6/227:30 amROS - BWI

3 stops40h 27mMultiple Airlines

Deal found 6/10

$1,711

Last-minute flights from Washington, D.C. to Rosario
Discover last-minute flight deals from Washington, D.C. to Rosario. Data last updated June 12, 2025 and is based on user searches.

Sat 6/142:21 amIAD - ROS

1 stop20h 52mCopa Airlines

Sat 6/211:21 amROS - IAD

1 stop14h 43mCopa Airlines

Deal found 6/10

$1,381

Sun 6/1510:05 pmIAD - ROS

2 stops54h 54mMultiple Airlines

Sun 6/227:30 amROS - IAD

2 stops18h 02mMultiple Airlines

Deal found 6/10

$1,347

Sun 6/157:49 pmBWI - ROS

3 stops53h 16mAmerican Airlines

Sat 6/213:00 amROS - BWI

2 stops40h 26mAmerican Airlines

Deal found 6/10

$1,438

Sun 6/156:50 amBWI - ROS

3 stops23h 55mMultiple Airlines

Sun 6/227:30 amROS - BWI

3 stops40h 27mMultiple Airlines

Deal found 6/10

$1,711

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Sun 6/15

7:49 pm-2:05 am

3 stops53h 16m

Rosario Fisherton

Sat 6/21

3:00 am-6:26 pm

2 stops40h 26m

$1,438

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Sun 6/15

6:50 am-7:45 am

3 stops23h 55m

Rosario Fisherton

Sun 6/22

7:30 am-10:57 pm

3 stops40h 27m

$1,711

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Washington, D.C. to Rosario

Have a flexible travel schedule? Discover the best time to fly to Rosario from Washington, D.C. 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, D.C. to Rosario

Rainfall in Rosario by month

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.

Temperature in Rosario by month

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).

Reviews of airlines servicing Rosario

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.

Related info for your journey

What airport do you fly into for flights to Rosario from Washington, D.C.?
Rosario Fisherton (ROS) is the airport you will fly into if you book a flight from Washington, D.C. to Rosario. You should not have trouble finding flights to Fisherton from Washington, D.C.; the airport handles an average of 0 inbound flights from Washington, D.C. per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Rosario airport from Washington, D.C.. It is only a 6.6 mi journey from Fisherton (ROS) to Rosario’s city center.
What is the cheapest airline to fly from Washington, D.C. to Rosario round-trip?
Flying on American Airlines is currently your cheapest option to Rosario, with prices starting at $1,438.
What are the most popular routes from Washington, D.C. to Rosario?
The most popular route from Washington, D.C. to Rosario is Washington, D.C. Dulles Intl - Rosario Fisherton. You may also consider Washington, D.C. Reagan-National - Rosario Fisherton or Baltimore/Washington - Rosario Fisherton.
Can I find deals for flights from Washington, D.C. to Rosario that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Rosario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Rosario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Rosario.
Can I find deals for business class flights from Washington, D.C. to Rosario?
Yes. Cheapflights offers flight deals from Washington, D.C. 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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$1,347+ Cheap flights from Washington, D.C. (WAS) 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. 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, D.C. to Rosario

Round-trip from

Find flight deals from Washington, D.C. to Rosario

Cheapest flights from Washington, D.C. to RosarioExplore the most affordable flight options available from Washington, D.C. to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Washington, D.C. to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Washington, D.C. to Rosario

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Rosario

Rainfall in Rosario by month

Plan your trip to Rosario by taking into account the average rainfall totals by month.

Temperature in Rosario by month

Plan your trip to Rosario by taking into account the average temperature totals by month.

Reviews of airlines servicing Rosario

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

What is the cheapest airline to fly from Washington, D.C. to Rosario round-trip?

What are the most popular routes from Washington, D.C. to Rosario?

Can I find deals for flights from Washington, D.C. to Rosario that include hotel bookings?

How can I find direct flights from Washington, D.C. to Rosario?

Can I find deals for business class flights from Washington, D.C. 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, D.C. to Rosario

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Cheapest flights from Washington, D.C. to Rosario
Explore the most affordable flight options available from Washington, D.C. to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.