Cheap flights from Istanbul to Chicago from £351

The cheapest month to fly to Chicago from Istanbul is in August. Flight prices, which tend to average around £223, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Chicago from Istanbul during July instead. Flights to Chicago in July, while not as cheap as those in August, still average around £278.

The cheapest day to depart on your flight to Chicago is on a Sunday when prices can be found for as low as £480. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Wednesday, with ticket prices averaging around £692.

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

You are more likely to see cheaper flights to Chicago from Istanbul when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around £573 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Istanbul for as low as £490 on momondo.

Historically, on average around 16% of flights between Istanbul and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 200 minutes.

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

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, Turkish Airlines have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

As of May 2026, there are 9 flights per day flying from Istanbul to Chicago. The most common time of day flights depart is 14:00, with 55% of flights taking off in the afternoon.

As of May 2026, there are 63 flights per week flying from Istanbul to Chicago. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.