Cheap flights from Chicago to Frankfurt am Main from $320

In general, September is the cheapest month to fly from Chicago to Frankfurt am Main Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $137. If you aren’t able to travel to Frankfurt am Main Airport during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $392.

On average, the least expensive day to fly to Frankfurt am Main Airport from Chicago is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $907. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Chicago to Frankfurt am Main Airport on a Saturday will generally be more expensive and average around $1,031. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

According to our data, the cheapest time of day to fly to Frankfurt am Main Airport is in the evening. momondo users have found flights departing from Chicago to Frankfurt am Main Airport in the evening for as low as $928. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Frankfurt am Main Airport is at noon when prices are around $994.

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

You are more likely to see cheaper flights to Frankfurt am Main Airport from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Frankfurt am Main Airport for around $878 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Frankfurt am Main Airport from Chicago for as low as $808 on momondo.

There are 4 cabin classes available to choose from on Chicago to Frankfurt am Main Airport 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 17% on your flight if you consider stops on a Chicago to Frankfurt am Main Airport flight.

As of June 2026, prices for Chicago to Frankfurt am Main Airport flights are approximately 38% cheaper when compared to flights at the same time last year.

British Airways and Finnair are the most popular carriers operating from Chicago to Frankfurt am Main

Lufthansa, United Airlines and Scandinavian Airlines are the top three most popular airlines that fly to Frankfurt am Main Airport from Chicago according to our data. Lufthansa is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Frankfurt am Main Airport. Keep in mind that there are 8 different airlines that fly to Frankfurt am Main Airport on a routine basis, so you have a few additional options to choose from.

Dublin (DUB) was the most common stop: 26% of momondo users choosing 1-stop flights on this route connected there.

Flights via Lisbon (LIS) offer the lowest average round-trip price of $436.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 10h 35m.

Reykjavik (KEF) has the shortest average layover time for this route: 1h 08m.

As of June 2026, there are 13 flights per day flying from Chicago to Frankfurt am Main Airport. The most common time of day flights depart is 4:00PM, with 54% of flights taking off in the afternoon.

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