Departing on a Sunday is a good option for securing a great price. You can expect to save up to 99% when planning your travel around this day of the week.
Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to Warsaw-Modlin Mazovia Airport. Flights to Warsaw-Modlin Mazovia Airport from Chicago-O'Hare Intl in February are about $919 on average during February, but can be found for as low as $520.
A simple way to save on the total cost of your ticket is to fly from Chicago-O'Hare Intl to Warsaw-Modlin Mazovia Airport in the morning. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight at noon.