Cheap flights from Chicago to Warsaw from $427

The cheapest month to fly to Warsaw from Chicago 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 Chicago 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 Chicago to Warsaw is on a Wednesday when prices can be found for as low as $789. Flights from Chicago 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 Chicago 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 Chicago - Warsaw flight prices

You are more likely to see cheaper flights to Warsaw from Chicago 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 Chicago for as low as $652 on momondo.

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

Lufthansa, KLM, and Delta are the most popular carriers operating from Chicago to Warsaw

LOT, Scandinavian Airlines and Lufthansa are the top three most popular airlines that fly to Warsaw from Chicago 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.

Historically, on average around 23% of flights between Chicago and Warsaw have experienced a delay on any given week. The average delay length over the past 12 months has been 186 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, LOT have had the least number of delays on this route over the last 12 months; with about 23% of their flights experiencing any sort of delay.

The number of flights available between Chicago and Warsaw is 2 per day as of August 2026. The most frequent departure time is 9:00PM, with 81% of daily flights leaving in the evening.

As of August 2026, there are 14 flights per week flying from Chicago to Warsaw. The most common day of the week flights depart is Mon, with 21% of flights taking off on this day.