Cheap flights from Illinois to Warsaw from $426

The cheapest month to fly to Warsaw from Illinois is in February. Flight prices, which tend to average around $570, are often lower during this time because this is during the off-season. If you are unable to visit Warsaw during the month of February, then departing from Illinois during the month January is also very affordable. Most momondo users find prices during this month for around $596.

The cheapest day to depart from Illinois to Warsaw is on a Wednesday when prices can be found for as low as $789. Flights from Illinois to Warsaw on a Saturday will generally be more expensive and average around $1,002. 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 Warsaw is at noon. Flights from Illinois to Warsaw during this time can be as low as $755. In the afternoon is when there is more demand to fly to Warsaw, so prices are often more expensive at around $989 per ticket.

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

You are more likely to see cheaper flights to Warsaw from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Warsaw for around $746 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Warsaw from Illinois for as low as $652 on momondo.

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

Lufthansa, SWISS, and United Airlines are the most popular carriers operating from Illinois to Warsaw

LOT, Scandinavian Airlines and Lufthansa are the top three most popular airlines that fly to Warsaw from Illinois according to our data. LOT is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Warsaw. Keep in mind that there are 13 different airlines that fly to Warsaw on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 1 flights per day flying from Illinois to Warsaw. The most common time of day flights depart is 9:00PM, with 81% of flights taking off in the evening.

The number of flights available between Illinois and Warsaw is 8 per week as of August 2026. The most frequent departure day is Wed, with 25% of weekly flights leaving on this day.