Cheap flights from Paris to Chicago from $421

The month of February is, on average, the cheapest month to fly to Chicago from Paris, with most prices found around $621. If you’re not able to fly to Chicago in February, then January is your next best option. Flight prices from Paris to Chicago during January average around $653.

The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as $774. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Paris to Chicago for around $1,066.

Our most recent data shows that the best time of day to fly to Chicago is at noon. Flights from Paris to Chicago during this time can be as low as $864. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $907.

Fly from Paris Charles de Gaulle to Chicago O'Hare Intl for the best Paris - Chicago flight prices

You are more likely to see cheaper flights to Chicago from Paris when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $819 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Paris for as low as $724 on momondo.

There are 2 cabin classes available to choose from on Paris to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Finnair, British Airways, and Avianca are the most popular carriers operating from Paris to Chicago

United Airlines, Lufthansa and Air France are the top three most popular airlines that fly to Chicago from Paris according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 3 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between Paris and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 176 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening 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. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, Air France have had the least number of delays on this route over the last 12 months; with about 20% of their flights experiencing any sort of delay.

Reykjavik (KEF) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Lisbon (LIS) offer the lowest average round-trip price of $447.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 11h 15m.

Reykjavik (KEF) has the shortest average layover time for this route: 0h 48m.

As of August 2026, there are 17 flights per day flying from Paris to Chicago. The most common time of day flights depart is 2:00PM, with 66% of flights taking off in the afternoon.

As of August 2026, there are 125 flights per week flying from Paris to Chicago. The most common day of the week flights depart is Fri, with 15% of flights taking off on this day.