Cheap flights from Copenhagen to Illinois from $354

The cheapest month to fly to Illinois from Copenhagen is in May. Flight prices, which tend to average around $333, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of May, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $360.

The cheapest day to depart from Copenhagen to Illinois is on a Wednesday when prices can be found for as low as $706. Flights from Copenhagen to Illinois on a Tuesday will generally be more expensive and average around $1,161. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Fly from Kastrup Copenhagen to Chicago O'Hare Intl for the best Kastrup Copenhagen - Illinois flight prices

You are more likely to see cheaper flights to Illinois from Copenhagen when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $703 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Copenhagen for as low as $590 on momondo.

There are 3 cabin classes available to choose from on Copenhagen to Illinois 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 30% on your flight if you consider stops on a Copenhagen to Illinois flight.

As of July 2026, 3 flights take off from Copenhagen and land in Illinois each day. The most common flight departure time for this route is 1:00PM, with 100% of daily flights taking off in the afternoon.

As of July 2026, 21 flights take off from Copenhagen and land in Illinois each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.