Cheap flights from Frankfurt am Main Airport to Chicago from $428

The month of February is, on average, the cheapest month to fly to Chicago from Frankfurt am Main Airport, with most prices found around $715. If you’re not able to fly to Chicago in February, then March is your next best option. Flight prices from Frankfurt am Main Airport to Chicago during March average around $748.

The cheapest day to depart on your flight to Chicago is on a Tuesday when prices can be found for as low as $845. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Frankfurt am Main Airport to Chicago for around $959.

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Frankfurt am Main Airport to Chicago during this time can be as low as $882. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $888.

Fly from Frankfurt am Main to Chicago O'Hare Intl for the best Frankfurt am Main - Chicago flight prices

You are more likely to see cheaper flights to Chicago from Frankfurt am Main Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $846 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Frankfurt am Main Airport for as low as $699 on momondo.

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

Historically, on average around 16% of flights between Frankfurt am Main and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

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

Sunday 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, United Airlines have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

Copenhagen (CPH) was the most common stop: 59% of momondo users choosing 1-stop flights on this route connected there.

Flights via Lisbon (LIS) offer the lowest average round-trip price of $538.

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

Frankfurt am Main (FRA) has the shortest average layover time for this route: 1h 32m.

13 flights are operational daily from Frankfurt am Main Airport to Chicago as of September 2026. The most popular departure time for this route is 10:00AM, with 53% of flights per day taking off at noon.

The number of flights available between Frankfurt am Main Airport and Chicago is 91 per week as of September 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.