Cheap flights from Rome Fiumicino Airport to Chicago from $500

The month of November is, on average, the cheapest month to fly to Chicago from Rome Fiumicino Airport, with most prices found around $443. If you’re not able to fly to Chicago in November, then September is your next best option. Flight prices from Rome Fiumicino Airport to Chicago during September average around $475.

The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as $752. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Rome Fiumicino Airport to Chicago for around $965.

Fly from Rome Fiumicino to Chicago O'Hare Intl for the best Rome Fiumicino - Chicago flight prices

You are more likely to see cheaper flights to Chicago from Rome Fiumicino Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $789 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Rome Fiumicino Airport for as low as $596 on momondo.

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

You could potentially save up to 7% on your flight if you consider stops on a Rome Fiumicino Airport to Chicago flight.

Aer Lingus, British Airways, and Delta are the most popular carriers operating from Rome Fiumicino to Chicago

United Airlines, American Airlines and ITA Airways are the top three most popular airlines that fly to Chicago from Rome Fiumicino Airport according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 4 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 Rome and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 173 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights in the early afternoon 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, Ethiopian Air have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

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

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $475.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 12h 30m.

Reykjavik (KEF) has the shortest average layover time for this route: 1h 05m.

12 flights are operational daily from Rome Fiumicino Airport to Chicago as of July 2026. The most popular departure time for this route is 9:00AM, with 91% of flights per day taking off at noon.

The number of flights available between Rome Fiumicino Airport and Chicago is 86 per week as of July 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.