How to find the cheapest flight from
Chicago (CHI) to Rosario (ROS)
What is the cheapest day to fly round-trip from Chicago to Rosario?
Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 101% on your flight compared to booking on days when demand is much higher.
Related info for your journey
Useful info, stats and facts about Chicago to Rosario flights.
Destination information for Rosario
Things to know before you go. Useful info for your trip from Chicago to Rosario
Chicago Midway (MDW)