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$316+ Cheap flights from Illinois to Istanbul

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Illinois to Istanbul

Keep the following information in mind while searching for Illinois to Istanbul flight deals. Data was last updated September 16, 2025.

Round-trip from

$577
(Lufthansa)

One-way from

$316
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$951
From Illinois to Istanbul
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One-way flight from Illinois to Istanbul
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Highest demand for flights based on searches. 14% potential increase in price ($178 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Illinois to Istanbul

Cheapest flights from Illinois to Istanbul
Explore the most affordable flight options available from Illinois to Istanbul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Lufthansa deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:50 pmSTL - IST
1 stop21h 55mLufthansa
Wed 11/196:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 9/15$577
This Lufthansa deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:50 pmSTL - IST
1 stop21h 55mLufthansa
Tue 11/186:30 amIST - STL
2 stops20h 09mLufthansa
Deal found 9/15$613
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/193:50 pmSTL - IST
1 stop21h 55mLufthansa
Wed 12/36:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 9/14$616
This Lufthansa deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:50 pmSTL - IST
1 stop21h 55mLufthansa
Thu 11/207:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 9/15$622
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:50 pmSTL - IST
1 stop21h 55mUnited Airlines
Fri 11/216:30 amIST - STL
1 stop16h 25mUnited Airlines
Deal found 9/15$625
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:43 pmSTL - IST
2 stops19h 02mUnited Airlines
Wed 11/196:30 amIST - STL
1 stop16h 25mUnited Airlines
Deal found 9/15$629
This Lufthansa deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/163:50 pmSTL - IST
1 stop17h 15mLufthansa
Tue 12/27:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 9/16$630
This KLM deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/55:15 pmSTL - SAW
2 stops19h 05mKLM
Wed 11/199:00 amSAW - STL
2 stops21h 58mKLM
Deal found 9/15$684
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/309:55 pmORD - IST
2 stops31h 05mLOT
Sun 12/712:10 pmIST - ORD
2 stops16h 50mLOT
Deal found 9/14$752
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/138:40 amORD - SAW
2 stops29h 10mMultiple Airlines
Mon 10/205:55 pmSAW - ORD
2 stops30h 00mMultiple Airlines
Deal found 9/14$753
This CrystalTravel deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1710:35 pmORD - IST
1 stop15h 10mLufthansa
Wed 12/246:30 amIST - ORD
1 stop22h 35mLufthansa
Deal found 9/14$754
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1210:40 amORD - IST
2 stops20h 20mMultiple Airlines
Tue 10/211:40 amIST - ORD
2 stops22h 15mMultiple Airlines
Deal found 9/14$755

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Istanbul 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 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Illinois to Istanbul that are best for you.

Fly from

Illinois

Fly to

Istanbul

Route

Depart

Return

Price

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/5

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Tue 11/18

6:30 am-5:39 pm

2 stops20h 09m

$613

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 11/16

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Wed 12/3

6:30 am-1:55 pm

1 stop16h 25m

$625

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/5

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Fri 11/21

6:30 am-1:55 pm

1 stop16h 25m

$625

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/19

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Wed 12/3

6:30 am-1:55 pm

1 stop16h 25m

$625

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 11/18

12:31 pm-5:45 pm

2 stops20h 14m

Istanbul

Wed 12/3

6:30 am-1:55 pm

1 stop16h 25m

$626

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 11/17

12:31 pm-5:55 pm

2 stops20h 24m

Istanbul

Wed 12/3

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 11/4

1:35 pm-5:45 pm

2 stops19h 10m

Istanbul

Wed 11/19

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 11/4

1:35 pm-5:45 pm

2 stops19h 10m

Istanbul

Fri 11/21

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 11/5

5:15 pm-9:20 pm

2 stops19h 05m

Istanbul Sabiha Gokcen

Thu 11/20

12:55 pm-11:40 pm

2 stops19h 45m

$684

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 11/5

5:15 pm-9:20 pm

2 stops19h 05m

Istanbul Sabiha Gokcen

Wed 11/19

9:00 am-9:58 pm

2 stops21h 58m

$684

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Istanbul

Have a flexible travel schedule? Discover the best time to fly to Istanbul from Illinois with our price prediction graph.
Estimated round-trip 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 Illinois to Istanbul

What is the cheapest month to book a flight from Illinois to Istanbul?

Currently, October is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $910). Flying from Illinois to Istanbul in June is currently the most expensive (average of $1,358). 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 IL to IST?

Find hourly flight availability from Illinois to Istanbul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Istanbul as you normally would.

Weekly flight availability from Illinois to Istanbul

Explore weekly flight availability from Illinois to Istanbul. 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 September 16, 2025.

The most flights from USIL to TR5 are scheduled on a Monday (13 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost to fly round-trip from Illinois to Istanbul?

Related info for your journey

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

  • How long is the flight from Illinois to Istanbul?

    For as low as $684, Lufthansa can have you in Istanbul from Illinois in 19h 05m. The distance between Illinois and Istanbul is about 5746 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Illinois to Istanbul?

    Most travelers choose Chicago O'Hare Intl - Istanbul, Chicago O'Hare Intl - Istanbul Sabiha Gokcen or Lambert-St Louis - Istanbul when deciding on the best route from Illinois to Istanbul.

  • What are the most reliable airlines from Illinois to Istanbul?

    Consider Pakistan International Airlines (75%), MIAT Mongolian (75%) or IndiGo (68%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Istanbul.

  • What are the cheapest flights from Illinois to Istanbul?

    Looking at all options, your cheapest flight can be booked for $311. While the most popular route (Chicago O'Hare Intl - Istanbul) can be booked for $647 on average, our data indicates $1,518 when flying from Illinois to Istanbul.

  • Can I find deals for flights from Illinois to Istanbul that include hotel bookings?

    Yes. In addition to deals on Illinois to Istanbul flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Istanbul?

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

  • Can I find deals for business class flights from Illinois to Istanbul?

    Yes. Cheapflights offers flight deals from Illinois to Istanbul 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 Illinois to Istanbul?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $910). Flying from Illinois to Istanbul in June is currently the most expensive (average of $1,358). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Istanbul

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Istanbul flights
Dulles Intl to Istanbul flights
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John F Kennedy Intl to Sabiha Gokcen flights
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Dulles Intl to Sabiha Gokcen flights
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Dallas/Fort Worth to Sabiha Gokcen flights
O'Hare Intl to Sabiha Gokcen flights
LaGuardia to Sabiha Gokcen flights
Miami to Sabiha Gokcen flights
San Francisco to Sabiha Gokcen flights
Ontario to Istanbul flights
Boston to Sabiha Gokcen flights
Hobby to Sabiha Gokcen flights
Orlando to Istanbul flights
Denver to Istanbul flights
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Love Field to Istanbul flights
Santa Ana to Istanbul flights
Atlanta to Sabiha Gokcen flights
Reagan-National to Sabiha Gokcen flights
Minneapolis to Istanbul flights
San Jose to Istanbul flights
Burbank to Istanbul flights
Detroit to Sabiha Gokcen flights
Tampa to Istanbul flights
Raleigh to Istanbul flights
Indianapolis to Istanbul flights
Denver to Sabiha Gokcen flights
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Burbank to Sabiha Gokcen flights

Top 10 airlines flying from Illinois to Istanbul

Discover the top 10 airlines that operate flights from Illinois to Istanbul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air SerbiaCheapest$382Average$1,026FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$517Average$759FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$633Average$1,015FlexibilityNo cancel feeOn-time77%
DeltaCheapest$653Average$1,103FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$660Average$867FlexibilityNo cancel feeOn-time70%
LOTCheapest$683Average$985FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$700Average$934FlexibilityNo cancel feeOn-time71%
Etihad AirwaysCheapest$721Average$857FlexibilityNo cancel feeOn-time75%
KLMCheapest$753Average$930FlexibilityNo cancel feeOn-time75%
Royal JordanianCheapest$769Average$828FlexibilityNo cancel feeOn-time61%

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