Cheap flights from Chicago to Istanbul from $303

In general, March is the cheapest month to fly from Chicago to Istanbul. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $846. If you aren’t able to travel to Istanbul during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $865.

The cheapest day to depart from Chicago to Istanbul is on a Monday when prices can be found for as low as $918. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Istanbul on Saturday is $987.

Our most recent data shows that the best time of day to fly to Istanbul is in the morning. Flights from Chicago to Istanbul during this time can be as low as $925. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $981 on average. Flights to Istanbul from Chicago in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Istanbul from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Istanbul for around $1,062 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Istanbul from Chicago for as low as $881 on momondo.

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

United Airlines, KLM, and British Airways are the most popular carriers operating from Chicago to Istanbul

Turkish Airlines, Lufthansa and KLM are the top three most popular airlines that fly to Istanbul from Chicago according to our data. Turkish Airlines is the first choice among our users, with 76% of people opting to fly with this airline when traveling to Istanbul. Keep in mind that there are 14 different airlines that fly to Istanbul on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between Chicago and Istanbul have experienced a delay on any given week. The average delay length over the past 12 months has been 188 minutes.

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

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Turkish Airlines have had the least number of delays on this route over the last 12 months; with about 22% of their flights experiencing any sort of delay.

4 flights are operational daily from Chicago to Istanbul as of October 2026. The most popular departure time for this route is 9:00PM, with 66% of flights per day taking off in the evening.

The number of flights available between Chicago and Istanbul is 31 per week as of October 2026. The most frequent departure day is Wed, with 26% of weekly flights leaving on this day.