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$319+ Cheap flights from Illinois to Istanbul (IST)

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 11, 2025.

Round-trip from

$592
(Booking.com)

One-way from

$319
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$948

Good round-trip deal

$673 or less

Good one-way deal

$370 or less
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 ($179 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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Price to beat on a round-trip flight from Illinois to Istanbul.
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Price to beat on a one-way flight from Illinois to Istanbul.
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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 11, 2025.

This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:50 pmSTL - IST
1 stop17h 15mLufthansa
Wed 11/196:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 9/10$592
This Lufthansa deal was found by Cheapflights users on 9/10. 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 11/193:50 pmSTL - IST
1 stop17h 15mLufthansa
Wed 12/36:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 9/10$611
This Lufthansa deal was found by Cheapflights users on 9/10. 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.
Tue 11/181:10 pmSTL - IST
2 stops24h 35mLufthansa
Wed 12/36:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 9/10$629
This Lufthansa deal was found by Cheapflights users on 9/10. 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 11/193:50 pmSTL - IST
1 stop17h 15mLufthansa
Tue 12/27:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 9/10$630
This United deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/812:25 pmSTL - IST
2 stops24h 55mMultiple Airlines
Wed 11/58:00 pmIST - STL
2 stops52h 29mMultiple Airlines
Deal found 9/10$636
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/164:05 pmSTL - IST
2 stops40h 50mAir Canada
Thu 12/48:00 pmIST - STL
2 stops52h 29mAir Canada
Deal found 9/10$638
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/194:05 pmSTL - IST
2 stops21h 15mAir Canada
Wed 12/38:50 amIST - STL
3 stops22h 55mAir Canada
Deal found 9/10$648
This Lufthansa deal was found by Cheapflights users on 9/10. 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.
Tue 11/1812:31 pmSTL - IST
2 stops20h 14mLufthansa
Thu 12/47:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 9/10$649
This Travelocity deal was found by Cheapflights users on 9/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2312:25 pmSTL - IST
2 stops16h 40mMultiple Airlines
Thu 11/61:55 pmIST - STL
2 stops34h 34mMultiple Airlines
Deal found 9/11$686
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/164:05 pmSTL - IST
2 stops40h 50mAir Canada
Sat 12/63:10 pmIST - STL
2 stops33h 19mAir Canada
Deal found 9/10$688
This Orbitz deal was found by Cheapflights users on 9/11. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2312:25 pmSTL - IST
2 stops16h 40mLufthansa
Thu 11/67:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 9/11$699
This FlightHub deal was found by Cheapflights users on 9/10. 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.
Thu 10/3010:55 pmORD - IST
2 stops28h 25mLOT
Thu 11/2012:10 pmIST - ORD
2 stops16h 50mLOT
Deal found 9/10$752

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 11, 2025.
Use the filters below to find and compare flights from Illinois to Istanbul Airport that are best for you.

Fly from

Illinois

Fly to

Istanbul

Route

Depart

Return

Price

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 10/29

6:43 pm-10:45 pm

2 stops20h 02m

Istanbul

Wed 11/19

6:30 am-1:55 pm

1 stop16h 25m

$600

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/19

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Wed 12/3

6:30 am-1:55 pm

1 stop16h 25m

$611

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/19

11:49 am-10:45 pm

2 stops25h 56m

Istanbul

Wed 12/3

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 11/18

1:10 pm-10:45 pm

2 stops24h 35m

Istanbul

Wed 12/3

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/19

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Thu 12/4

7:00 pm-1:55 pm

1 stop27h 55m

$630

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 10/8

12:25 pm-9:20 pm

2 stops24h 55m

Istanbul

Wed 11/5

8:00 pm-3:29 pm

2 stops52h 29m

$636

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 11/17

4:05 pm-5:45 pm

2 stops40h 40m

Istanbul

Tue 12/2

9:25 pm-3:29 pm

2 stops51h 04m

$638

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 11/18

4:30 pm-3:50 am

2 stops26h 20m

Istanbul

Mon 12/1

4:50 am-4:35 pm

2 stops20h 45m

$638

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/19

4:05 pm-10:20 pm

2 stops21h 15m

Istanbul

Mon 12/1

8:00 pm-3:29 pm

2 stops52h 29m

$638

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 11/18

11:49 am-5:45 pm

2 stops20h 56m

Istanbul

Tue 12/2

7:00 pm-1:55 pm

1 stop27h 55m

$649

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 57 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 Airport

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Istanbul Airport (average of $916). Flying from Illinois to Istanbul Airport in June is currently the most expensive (average of $1,359). 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 11, 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 Airport as you normally would.

Weekly flight availability from Illinois to Istanbul Airport

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 11, 2025.

The most flights from USIL to IST 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 to fly round-trip from Illinois to Istanbul Airport?

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 Airport?

    A quick flight from Illinois to Istanbul Airport can take about 15h 30m. Lufthansa provides one of the quickest options available for as low as $754. The distance from Illinois to Istanbul Airport is about 5455 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    While some choose either Chicago Midway - Istanbul or Lambert-St Louis - Istanbul, Chicago O'Hare Intl - Istanbul is the most popular route from Illinois to Istanbul Airport.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Istanbul Airport on time: Pakistan International Airlines (71%), MIAT Mongolian (71%), Turkish Airlines (60%).

  • What are the cheapest flights from Illinois to Istanbul Airport?

    Looking at all options, your cheapest flight can be booked for $301. While the most popular route (Chicago O'Hare Intl - Istanbul) can be booked for $640 on average, our data indicates $1,477 when flying from Illinois to Istanbul Airport.

  • 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 Airport?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Istanbul Airport (average of $916). Flying from Illinois to Istanbul Airport in June is currently the most expensive (average of $1,359). 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

Traveling to a place near Istanbul Airport?

Book flights to Istanbul Airport if you plan to visit one of these locations
Yalova

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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.
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Midway to Istanbul 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air SerbiaCheapest$382Average$1,026FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$517Average$776FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$627Average$1,059FlexibilityNo cancel feeOn-time77%
DeltaCheapest$657Average$1,102FlexibilityNo cancel feeOn-timeN/A
LOTCheapest$683Average$984FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$698Average$867FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$700Average$938FlexibilityNo cancel feeOn-time71%
Etihad AirwaysCheapest$721Average$861FlexibilityNo cancel feeOn-time75%
KLMCheapest$753Average$990FlexibilityNo cancel feeOn-time75%
Royal JordanianCheapest$769Average$839FlexibilityNo cancel feeOn-time61%

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