Cheap flights from Chicago O'Hare Intl Airport to Istanbul from $299

In general, November is the cheapest month to fly from Chicago O'Hare Intl Airport 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 November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $873.

The cheapest day to depart from Chicago O'Hare Intl Airport to Istanbul is on a Wednesday when prices can be found for as low as $895. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Istanbul on Friday is $976.

Our most recent data shows that the best time of day to fly to Istanbul is in the morning. Flights from Chicago O'Hare Intl Airport to Istanbul during this time can be as low as $916. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $941 on average. Flights to Istanbul from Chicago O'Hare Intl Airport 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 O'Hare Intl - Istanbul flight prices

You are more likely to see cheaper flights to Istanbul from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Istanbul for around $1,010 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Istanbul from Chicago O'Hare Intl Airport for as low as $805 on momondo.

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

KLM, Air Serbia, and Delta are the most popular carriers operating from Chicago O'Hare Intl to Istanbul

Turkish Airlines, Lufthansa and LOT are the top three most popular airlines that fly to Istanbul from Chicago O'Hare Intl Airport according to our data. Turkish Airlines is the first choice among our users, with 87% of people opting to fly with this airline when traveling to Istanbul. Keep in mind that there are 13 different airlines that fly to Istanbul on a routine basis, so you have a few additional options to choose from.

Historically, on average around 23% 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 178 minutes.

Generally, flights departing in the morning 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. Monday 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.

As of March 2026, there are 10 flights per day flying from Chicago O'Hare Intl Airport to Istanbul. The most common time of day flights depart is 12:00PM, with 50% of flights taking off in the afternoon.

As of March 2026, there are 70 flights per week flying from Chicago O'Hare Intl Airport to Istanbul. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.