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$473+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap 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 December 4, 2025.

This CheapOair deal was found by Cheapflights users on 12/2. 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 12/236:35 pmSTL - IST
2 stops58h 20mBritish Airways
Tue 1/202:55 pmIST - STL
2 stops36h 19mBritish Airways
Deal found 12/2$618
This Icelandair deal was found by Cheapflights users on 12/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:30 pmORD - IST
1 stop20h 05mIcelandair
Fri 2/612:05 pmIST - ORD
1 stop14h 15mIcelandair
Deal found 12/2$651
This KLM deal was found by Cheapflights users on 12/2. 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 12/314:25 pmORD - IST
1 stop15h 30mKLM
Mon 2/24:50 amIST - ORD
1 stop19h 20mKLM
Deal found 12/2$671
This KLM deal was found by Cheapflights users on 12/2. 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 12/314:25 pmORD - SAW
1 stop16h 00mKLM
Tue 2/312:55 pmSAW - ORD
1 stop34h 25mKLM
Deal found 12/2$673
This KLM deal was found by Cheapflights users on 12/2. 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 12/95:20 pmORD - IST
1 stop25h 30mKLM
Mon 12/154:50 amIST - ORD
1 stop19h 20mKLM
Deal found 12/2$675
This KLM deal was found by Cheapflights users on 12/2. 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 12/314:25 pmORD - SAW
1 stop19h 55mKLM
Wed 2/412:55 pmSAW - ORD
2 stops20h 01mKLM
Deal found 12/2$683
This Icelandair deal was found by Cheapflights users on 12/4. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:30 pmORD - IST
1 stop20h 05mIcelandair
Fri 3/612:05 pmIST - ORD
1 stop14h 15mIcelandair
Deal found 12/4$690
This KLM deal was found by Cheapflights users on 12/3. 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 12/314:25 pmORD - SAW
1 stop19h 55mKLM
Mon 2/99:00 amSAW - ORD
1 stop14h 20mKLM
Deal found 12/3$696
This Booking.com deal was found by Cheapflights users on 12/2. 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.
Tue 12/236:35 pmSTL - IST
2 stops58h 20mBritish Airways
Sun 1/119:20 pmIST - STL
2 stops34h 24mBritish Airways
Deal found 12/2$704
This Air France deal was found by Cheapflights users on 12/3. 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.
Wed 12/311:35 pmORD - IST
2 stops18h 20mMultiple Airlines
Sun 2/84:50 amIST - ORD
1 stop19h 20mMultiple Airlines
Deal found 12/3$705
This Mytrip deal was found by Cheapflights users on 12/2. 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.
Tue 12/97:05 amORD - IST
2 stops27h 45mMultiple Airlines
Tue 12/168:10 amIST - ORD
2 stops21h 00mMultiple Airlines
Deal found 12/2$721
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 12/77:20 pmORD - SAW
1 stop15h 40mMultiple Airlines
Thu 12/119:05 amSAW - ORD
1 stop16h 40mMultiple Airlines
Deal found 12/3$725

Find flight deals from Illinois to Istanbul

Keep the following information in mind while searching for Illinois to Istanbul flight deals. Data was last updated December 4, 2025.

Round-trip from

$528
(oojo)

One-way from

$473
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,163
From Illinois to Istanbul
Search Deals
One-way flight from Illinois to Istanbul
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($167 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 December 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 December 4, 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

Mon 1/12

9:45 am-3:50 am

2 stops33h 05m

Istanbul

Mon 2/2

4:50 am-9:34 am

2 stops37h 44m

$548

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 1/12

1:18 pm-3:50 am

2 stops29h 32m

Istanbul

Tue 2/3

4:50 am-8:37 pm

2 stops24h 47m

$549

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 1/12

1:18 pm-3:50 am

2 stops29h 32m

Istanbul

Wed 1/28

4:50 am-4:37 pm

2 stops20h 47m

$549

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 1/12

1:18 pm-3:50 am

2 stops29h 32m

Istanbul

Thu 1/29

4:50 am-8:43 pm

2 stops24h 53m

$549

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 1/14

7:10 am-3:50 am

2 stops35h 40m

Istanbul

Tue 2/3

4:50 am-4:42 pm

2 stops20h 52m

$557

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 1/14

9:59 am-3:50 am

2 stops32h 51m

Istanbul

Thu 1/29

4:50 am-5:50 pm

2 stops22h 00m

$557

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 1/14

7:10 am-3:50 am

2 stops35h 40m

Istanbul

Wed 1/28

4:50 am-11:37 pm

2 stops27h 47m

$557

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 1/16

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Fri 1/30

6:30 am-1:55 pm

1 stop16h 25m

$559

MolineIstanbul

MLI - IST

MLIIST

Moline Quad-City

Fri 1/23

6:30 am-10:45 pm

2 stops31h 15m

Istanbul

Tue 1/27

6:30 am-3:09 pm

2 stops17h 39m

$573

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Tue 1/13

12:00 pm-5:25 pm

2 stops20h 25m

Istanbul Sabiha Gokcen

Sun 2/1

9:00 am-8:37 pm

2 stops20h 37m

$596

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

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, February is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $418). Flying from Illinois to Istanbul in June is currently the most expensive (average of $852). 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 December 4, 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 December 4, 2025.

The most flights from USIL to TR5 are scheduled on a Monday (10 on average). You will have fewer flight options on Monday, 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 $596, Delta can have you in Istanbul from Illinois in 20h 25m. 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 cheapest airlines to fly from Illinois to Istanbul one-way?

    The cheapest airlines for a one-way flight from Illinois to Istanbul are Turkish Airlines ($321), Air Serbia ($443), and Royal Jordanian ($447).

  • 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 Turkish Airlines (65%), IndiGo (65%) or Uzbekistan Airways (65%) 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 $426. While the most popular route (Chicago O'Hare Intl - Istanbul) can be booked for $587 on average, our data indicates $1,616 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, February is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $418). Flying from Illinois to Istanbul in June is currently the most expensive (average of $852). 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.
John F Kennedy Intl to Istanbul flights
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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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air SerbiaCheapest$394Average$930FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$421Average$663FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$670Average$1,000FlexibilityNo cancel feeOn-time77%
LOTCheapest$708Average$1,051FlexibilityNo cancel feeOn-time81%
KLMCheapest$719Average$775FlexibilityNo cancel feeOn-time75%
Royal JordanianCheapest$742Average$794FlexibilityNo cancel feeOn-time61%
Etihad AirwaysCheapest$757Average$865FlexibilityNo cancel feeOn-time75%
DeltaCheapest$774Average$1,110FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$779Average$1,148FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$791Average$1,114FlexibilityNo cancel feeOn-time69%

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