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Cheap flights from Istanbul Airport to Chicago O'Hare Intl Airport from £393

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
IST — ORD
19 Aug — 26 Aug1
1 adult

Cheapflights Tip: The best prices from Istanbul to Chicago O'Hare Intl are usually found in February or November, booked 12 days in advance, depart on a Monday or Saturday and return on a Sunday

Cheap flight deals from Istanbul to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Istanbul (IST) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 14 August 2025.

Round-trip from

£393

Popular in

August

Cheapest in

February

Average price

£709
KLM
  • KLM
  • 11/9-28/9
  • 2 total stops
  • 41h 05m total
  • Istanbul to Chicago
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Highest demand for flights based on searches. 11% potential increase in price (£51 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Istanbul to O'Hare Intl

Cheapest flights from Istanbul to O'Hare Intl
Explore the most affordable flight options available from Istanbul to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2025.

Thu 11/917:05IST - ORD
1 stop29h 05mKLM
Fri 26/916:15ORD - IST
1 stop25h 05mKLM
Deal found 14/8£393
Thu 18/906:10IST - ORD
1 stop16h 00mKLM
Fri 3/1016:15ORD - IST
1 stop25h 05mKLM
Deal found 13/8£394
Tue 9/906:10IST - ORD
1 stop16h 00mKLM
Mon 15/916:40ORD - IST
1 stop24h 40mKLM
Deal found 14/8£395
Sun 2/1117:55IST - ORD
1 stop29h 25mKLM
Wed 19/1114:10ORD - IST
2 stops17h 45mKLM
Deal found 13/8£396
Thu 30/1017:55IST - ORD
1 stop29h 25mKLM
Wed 12/1116:25ORD - IST
1 stop15h 30mKLM
Deal found 11/8£397
Sun 21/1217:55IST - ORD
1 stop29h 25mKLM
Sat 24/113:35ORD - IST
2 stops18h 20mKLM
Deal found 14/8£400
Fri 31/1017:55IST - ORD
1 stop29h 25mKLM
Fri 14/1116:25ORD - IST
1 stop15h 30mKLM
Deal found 13/8£400
Sun 21/1217:55IST - ORD
1 stop29h 25mKLM
Tue 6/113:30ORD - IST
2 stops18h 25mKLM
Deal found 13/8£403
Wed 12/1104:50IST - ORD
1 stop19h 20mKLM
Wed 10/1216:25ORD - IST
1 stop15h 30mKLM
Deal found 13/8£404
Thu 30/1017:55IST - ORD
1 stop29h 25mKLM
Fri 14/1116:25ORD - IST
1 stop15h 30mKLM
Deal found 11/8£405
Thu 30/1017:55IST - ORD
1 stop29h 25mMultiple Airlines
Thu 13/1117:20ORD - IST
1 stop25h 30mMultiple Airlines
Deal found 13/8£406

Cheapflights Fare Finder

 
Customise your flight search to find flights from Istanbul to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 August 2025.
Use the filters below to find and compare flights from Istanbul Airport to Chicago O'Hare Intl Airport that are best for you.

Fly from

Istanbul

Fly to

O'Hare Intl

Route

Depart

Return

Price

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Thu 11/9

17:05-14:10

1 stop29h 05m

Chicago O'Hare Intl

Fri 26/9

16:15-01:20

1 stop25h 05m

£393

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Fri 26/9

06:10-14:10

1 stop16h 00m

Chicago O'Hare Intl

Fri 3/10

16:15-01:20

1 stop25h 05m

£393

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Thu 29/1

17:55-14:20

1 stop29h 25m

Chicago O'Hare Intl

Wed 25/2

16:25-16:55

1 stop15h 30m

£393

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Fri 12/9

06:10-14:10

1 stop16h 00m

Chicago O'Hare Intl

Sun 28/9

16:15-01:20

1 stop25h 05m

£393

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Fri 12/9

06:10-14:10

1 stop16h 00m

Chicago O'Hare Intl

Fri 26/9

16:15-01:20

1 stop25h 05m

£393

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Thu 25/9

17:05-14:10

1 stop29h 05m

Chicago O'Hare Intl

Fri 24/10

16:15-01:20

1 stop25h 05m

£393

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Mon 13/10

06:30-09:40

Nonstop11h 10m

£451

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Wed 10/9

07:00-19:40

1 stop20h 40m

£454

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Wed 10/9

06:30-09:40

Nonstop11h 10m

£454

IstanbulChicago

IST - ORD

ISTORD

Istanbul

Mon 8/9

06:30-09:40

Nonstop11h 10m

£454

Flights are sorted by cheapest return flights first.

Deals found on 12/8

Showing 1-10 of 15 results
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Best time to book a flight from Istanbul to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Istanbul with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Istanbul Airport to Chicago O'Hare Intl Airport

How far ahead should I book a flight from Istanbul Airport to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a return flight from Istanbul to O'Hare Intl. Price data was last updated on 8 August 2025.

The best time to book flights from Istanbul Airport to Chicago O'Hare Intl Airport is 12 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Istanbul Airport to Chicago O'Hare Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Istanbul Airport to Chicago O'Hare Intl Airport (average of £595). Flying from Istanbul Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IST to ORD?

Find hourly flight availability from Istanbul to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 August 2025.

A simple way to save on the total cost of your ticket is to fly from Istanbul Airport to Chicago O'Hare Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight at midday.

Weekly flight availability from Istanbul Airport to Chicago O'Hare Intl Airport

Explore weekly flight availability from Istanbul to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 14 August 2025.

The most flights from IST to ORD are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost for a return flight from Istanbul Airport to Chicago O'Hare Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Istanbul to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the most reliable airlines from Istanbul Airport to Chicago O'Hare Intl Airport?

    Before booking your flight to Chicago O'Hare Intl Airport from Istanbul Airport, check out the most reliable airlines to get you to your destination on time: Turkish Airlines (80%), IndiGo (69%), Uzbekistan Airways( 69%).

  • Can I find deals for flights from Istanbul to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Istanbul to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Istanbul to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Istanbul to O'Hare Intl.

  • Can I find deals for business class flights from Istanbul to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Istanbul to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Istanbul Airport to Chicago O'Hare Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Istanbul Airport to Chicago O'Hare Intl Airport (average of £595). Flying from Istanbul Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Downers Grove
Elk Grove Village
Rosemont

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Can Cheapflights notify me if prices for flights from Istanbul to O'Hare Intl become cheaper?

Not ready to book yet? You can track prices for flights from Istanbul to O'Hare Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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