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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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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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 October 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/166:43 pmSTL - IST
2 stops19h 02mLufthansa
Tue 12/27:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 10/18$525
This United deal was found by Cheapflights users on 10/18. 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.
Mon 11/173:14 pmSTL - IST
2 stops22h 31mMultiple Airlines
Mon 11/247:45 pmIST - STL
2 stops52h 44mMultiple Airlines
Deal found 10/18$561
This United Airlines deal was found by Cheapflights users on 10/18. 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.
Tue 12/212:55 pmSTL - IST
2 stops24h 50mUnited Airlines
Tue 12/96:30 amIST - STL
2 stops24h 28mUnited Airlines
Deal found 10/18$575
This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/254:05 pmSTL - IST
2 stops19h 05mMultiple Airlines
Tue 12/27:00 pmIST - STL
1 stop27h 55mMultiple Airlines
Deal found 10/20$576
This Delta deal was found by Cheapflights users on 10/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:35 amSTL - IST
2 stops33h 15mDelta
Tue 12/25:55 pmIST - STL
2 stops47h 29mDelta
Deal found 10/18$581
This Delta deal was found by Cheapflights users on 10/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/181:20 pmSTL - IST
2 stops29h 30mDelta
Wed 12/34:50 amIST - STL
2 stops25h 12mDelta
Deal found 10/18$587
This Delta deal was found by Cheapflights users on 10/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:35 amSTL - IST
2 stops33h 15mDelta
Wed 12/34:50 amIST - STL
2 stops20h 16mDelta
Deal found 10/18$593
This Delta deal was found by Cheapflights users on 10/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:45 amSTL - IST
2 stops32h 05mDelta
Wed 12/34:50 amIST - STL
2 stops27h 50mDelta
Deal found 10/18$600
This Air France deal was found by Cheapflights users on 10/17. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/234:25 pmORD - IST
1 stop15h 30mKLM
Sun 11/304:50 amIST - ORD
2 stops20h 34mKLM
Deal found 10/17$763
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Wed 11/126:30 pmORD - IST
2 stops16h 35mMultiple Airlines
Sun 11/167:20 pmIST - ORD
3 stops31h 00mMultiple Airlines
Deal found 10/19$764
This KLM deal was found by Cheapflights users on 10/19. 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.
Tue 11/256:15 pmORD - SAW
2 stops18h 05mKLM
Thu 12/119:00 amSAW - ORD
2 stops18h 27mKLM
Deal found 10/19$764
This Air France deal was found by Cheapflights users on 10/17. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/163:47 pmORD - IST
2 stops16h 08mKLM
Sat 11/225:55 pmIST - ORD
1 stop29h 25mKLM
Deal found 10/17$765

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 October 20, 2025.

Round-trip from

$525
(Kiwi.com)

One-way from

$316
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$948
From Illinois to Istanbul
Search Deals
One-way flight from Illinois to Istanbul
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($176 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 October 20, 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

Tue 11/18

7:00 am-10:45 pm

2 stops30h 45m

Istanbul

Tue 11/25

7:45 pm-3:29 pm

2 stops52h 44m

$561

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sat 1/17

11:20 am-6:05 pm

2 stops21h 45m

Istanbul

Fri 1/30

6:30 am-1:55 pm

1 stop16h 25m

$566

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 1/14

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Mon 2/2

6:30 am-11:59 pm

2 stops26h 29m

$568

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 1/16

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Tue 2/3

6:30 am-2:30 pm

2 stops17h 00m

$571

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 1/16

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Thu 1/29

6:30 am-10:58 pm

2 stops25h 28m

$571

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Thu 1/15

11:22 am-6:05 pm

2 stops21h 43m

Istanbul

Sat 1/31

6:30 am-11:59 pm

2 stops26h 29m

$575

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 1/11

6:40 pm-10:45 pm

2 stops19h 05m

Istanbul

Thu 1/29

6:30 am-10:58 pm

2 stops25h 28m

$575

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 1/14

11:22 am-6:05 pm

2 stops21h 43m

Istanbul

Fri 1/30

6:30 am-10:58 pm

2 stops25h 28m

$575

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 2/11

12:01 pm-5:25 pm

2 stops20h 24m

Istanbul

Tue 2/17

7:35 am-9:44 pm

2 stops23h 09m

$577

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 11/18

5:14 pm-3:50 am

2 stops25h 36m

Istanbul

Tue 12/2

5:55 pm-6:37 pm

2 stops33h 42m

$580

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

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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, November is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $386). Flying from Illinois to Istanbul in June is currently the most expensive (average of $854). 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 October 20, 2025.

When flying from Illinois to Istanbul, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 33% versus a flight in the afternoon.

What is the cheapest day to fly from Illinois to Istanbul?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Istanbul. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Istanbul flight should consider departing on Sunday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 20, 2025.

The most flights from USIL to TR5 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).

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 $567, United Airlines can have you in Istanbul from Illinois in 17h 15m. The distance between Illinois and Istanbul is about 5707 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 Chicago Midway - 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 (69%), MIAT Mongolian (69%) 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 $355. While the most popular route (Chicago O'Hare Intl - Istanbul) can be booked for $425 on average, our data indicates $1,558 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, November is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $386). Flying from Illinois to Istanbul in June is currently the most expensive (average of $854). 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

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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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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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air SerbiaCheapest$382Average$1,122FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$480Average$740FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$644Average$1,010FlexibilityNo cancel feeOn-time77%
LOTCheapest$683Average$977FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$708Average$930FlexibilityNo cancel feeOn-time70%
KLMCheapest$720Average$775FlexibilityNo cancel feeOn-time75%
Etihad AirwaysCheapest$721Average$852FlexibilityNo cancel feeOn-time75%
Royal JordanianCheapest$742Average$828FlexibilityNo cancel feeOn-time61%
DeltaCheapest$772Average$1,073FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$780Average$1,142FlexibilityNo cancel feeOn-time76%

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