Cheap flights from Illinois to Frankfurt am Main from $321

In general, February is the cheapest month to fly from Illinois to Frankfurt am Main Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $557. If you aren’t able to travel to Frankfurt am Main Airport during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $620.

On average, the least expensive day to fly to Frankfurt am Main Airport from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $951. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Illinois to Frankfurt am Main Airport on a Saturday will generally be more expensive and average around $1,052. 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 Illinois to Frankfurt am Main Airport in the evening for as low as $979. 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 $1,048.

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

You are more likely to see cheaper flights to Frankfurt am Main Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Frankfurt am Main Airport for around $912 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 Illinois for as low as $834 on momondo.

There are 4 cabin classes available to choose from on Illinois 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.

Air Serbia, Delta, and KLM are the most popular carriers operating from Illinois to Frankfurt am Main

Lufthansa, Scandinavian Airlines and United Airlines are the top three most popular airlines that fly to Frankfurt am Main Airport from Illinois according to our data. Lufthansa is the first choice among our users, with 27% 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.

The number of flights available between Illinois and Frankfurt am Main Airport is 14 per day as of September 2026. The most frequent departure time is 4:00PM, with 56% of daily flights leaving in the afternoon.

As of September 2026, there are 101 flights per week flying from Illinois to Frankfurt am Main Airport. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.