The cheapest times to fly from ROS to ORD are

  • January 15th to March 25th
  • April 9th to June 3rd
  • October 15th to November 18th (except the week of October 22nd)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ROS to ORD is early February. Prices can be as high as $2431 for Saturday flights during early January, or as low as $872 for Tuesday flights around early February.


When to Fly to Chicago

Flying from Rosario (ROS) to Chicago, IL (ORD) will usually cost between $935 to $1834 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early February with an average ticket price of $970. Due to high demand the most expensive time to fly is early January, with an average price of $1938. Planning your trip to low-cost times can easily save you $967 on economy flights and even more on first-class flights. Generally, any price below $1142 can be considered a good price for a round-trip ROS to ORD flight.

See below for a graph of average weekly prices for the ROS to ORD route. All prices are for round-trip tickets in USD.

ROS to ORD Flight Prices

Compared to other flights, the ROS to ORD flight is slightly more expensive than the average and costs slightly more than the average flight leaving from Rosario. The average price per mile (for a direct flight) is $0.13, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $132 (10%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1211. Return trip prices are from the ORD to ROS flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ROS to ORD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 48 minutes may not be realistic.


Flight Hacking ROS to ORD

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ROS to ORD — but Champion Traveler does!

Hack #1: Santiago (ROS > SCL > ORD)

  • Price for both tickets: $792
  • Average savings: $350 (30.65%)

See ROS to LIM flights

Hack #2: Lima (ROS > LIM > ORD)

  • Price for both tickets: $886
  • Average savings: $257 (22.46%)

See ROS to SCL flights

Hack #3: Miami, FL (ROS > MIA > ORD)

  • Price for both tickets: $957
  • Average savings: $185 (16.2%)

See ROS to MIA flights


Flight Questions Answered

Still have questions about flying from ROS to ORD? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Aerolineas Argentinas, Aeromexico, American, COPA, Delta, LATAM, United, and potentially more during busy seasons.

How far away is it from Chicago O’Hare International Airport to Rosario Airport?

The distance between the two airports is roughly 5452 miles or 8774 kilometers.

How long does it take to fly from ROS to ORD?

The real-world flight time for a nonstop ROS to ORD flight is about 10 hour 48 minutes.

How many flights go between Rosario and Chicago, IL?

It depends on the day of the week and the date, but a typical day might have around 16 available flights from ROS to ORD.


Airport Location Info


Departing Airport

Origination code ROS
Origination airport name Rosario Airport
City Rosario
Country Argentina
Latitude -32.9
Longitude -60.8

Return Airport

Destination code ORD
Destination airport name Chicago O’Hare International Airport
City Chicago, IL
Country the United States
Latitude 42
Longitude -87.9


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.