Cheap flights from Warsaw to Illinois from $400

The cheapest month to fly to Illinois from Warsaw is in February. Flight prices, which tend to average around $626, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $670.

The cheapest day to depart from Warsaw to Illinois is on a Thursday when prices can be found for as low as $732. Flights from Warsaw to Illinois on a Monday will generally be more expensive and average around $870. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Warsaw to Illinois during this time can be as low as $628. Flights in the morning are often more expensive with an average ticket price of $818.

Fly from Warsaw Frederic Chopin to Chicago O'Hare Intl for the best Warsaw - Illinois flight prices

You are more likely to see cheaper flights to Illinois from Warsaw when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $739 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Warsaw for as low as $685 on momondo.

There are 3 cabin classes available to choose from on Warsaw to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of November 2026, 1 flights take off from Warsaw and land in Illinois each day. The most common flight departure time for this route is 4:00PM, with 100% of daily flights taking off in the afternoon.

12 flights are operational weekly from Warsaw to Illinois as of November 2026. The most popular departure day for this route is Tue, with 17% of flights per week taking off on this day.