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$444+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
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 November 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/91:00 pmSTL - IST
2 stops24h 45mLufthansa
Wed 12/246:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 11/11$554
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/99:00 amSTL - IST
2 stops23h 45mUnited Airlines
Wed 12/246:30 amIST - STL
1 stop16h 25mUnited Airlines
Deal found 11/11$564
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/99:00 amSTL - IST
2 stops23h 45mUnited Airlines
Thu 12/256:30 amIST - STL
2 stops21h 48mUnited Airlines
Deal found 11/11$574
This Lufthansa deal was found by Cheapflights users on 11/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/91:00 pmSTL - IST
2 stops24h 45mLufthansa
Tue 12/237:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 11/11$583
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:05 pmSTL - IST
2 stops24h 45mDelta
Tue 12/234:50 amIST - STL
2 stops21h 10mDelta
Deal found 11/11$586
This Ovago deal was found by Cheapflights users on 11/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/101:43 pmSTL - IST
2 stops18h 42mBritish Airways
Wed 12/242:45 pmIST - STL
2 stops41h 11mBritish Airways
Deal found 11/11$602
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:05 pmSTL - IST
2 stops24h 45mDelta
Wed 12/244:50 amIST - STL
2 stops26h 26mDelta
Deal found 11/11$611
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/225:30 pmORD - IST
1 stop13h 25mAir Serbia
Fri 12/125:20 amIST - ORD
1 stop18h 40mAir Serbia
Deal found 11/10$689
This Mytrip deal was found by Cheapflights users on 11/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:50 pmORD - SAW
2 stops19h 35mMultiple Airlines
Wed 12/179:50 amSAW - ORD
2 stops19h 20mMultiple Airlines
Deal found 11/11$689
This Mytrip deal was found by Cheapflights users on 11/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/177:05 amORD - IST
2 stops26h 20mMultiple Airlines
Mon 11/247:20 pmIST - ORD
3 stops28h 35mMultiple Airlines
Deal found 11/11$691
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/287:40 pmORD - SAW
1 stop14h 35mMultiple Airlines
Fri 12/59:15 amSAW - ORD
1 stop17h 40mMultiple Airlines
Deal found 11/11$691
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/17:40 pmORD - SAW
1 stop14h 35mMultiple Airlines
Mon 12/89:15 amSAW - ORD
1 stop17h 40mMultiple Airlines
Deal found 11/11$692

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 November 12, 2025.

Round-trip from

$551
(Cheapflightsfares)

One-way from

$444
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$928
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 ($178 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 12, 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

Sun 1/18

1:15 pm-10:45 pm

2 stops24h 30m

Istanbul

Mon 2/16

6:30 am-12:05 am

2 stops26h 35m

$564

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 1/16

6:44 pm-12:35 am

2 stops20h 51m

Istanbul

Sun 1/25

8:20 am-10:59 pm

2 stops23h 39m

$575

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 1/14

9:59 am-3:50 am

2 stops32h 51m

Istanbul

Sat 1/31

4:50 am-11:39 pm

2 stops27h 49m

$586

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 12/9

6:05 pm-3:50 am

2 stops24h 45m

Istanbul

Tue 12/23

4:50 am-5:00 pm

2 stops21h 10m

$586

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 12/9

6:05 pm-3:50 am

2 stops24h 45m

Istanbul

Wed 12/24

4:50 am-10:16 pm

2 stops26h 26m

$611

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 1/16

6:55 pm-3:50 am

2 stops23h 55m

Istanbul

Sat 1/24

4:50 am-8:45 pm

2 stops24h 55m

$661

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 1/18

12:00 pm-4:55 pm

2 stops19h 55m

Istanbul

Sun 2/15

4:50 am-8:41 pm

2 stops24h 51m

$668

ChicagoIstanbul

ORD - SAW

ORDSAW

Chicago O'Hare Intl

Fri 11/28

4:25 pm-9:20 pm

1 stop19h 55m

Istanbul Sabiha Gokcen

Mon 12/8

9:00 am-2:20 pm

1 stop14h 20m

$719

ChicagoIstanbul

ORD - SAW

ORDSAW

Chicago O'Hare Intl

Fri 2/6

4:25 pm-5:25 pm

1 stop16h 00m

Istanbul Sabiha Gokcen

Wed 2/11

9:00 am-2:20 pm

1 stop14h 20m

$719

ChicagoIstanbul

ORD - SAW

ORDSAW

Chicago O'Hare Intl

Sat 1/24

4:25 pm-9:20 pm

1 stop19h 55m

Istanbul Sabiha Gokcen

Mon 2/2

9:00 am-2:20 pm

1 stop14h 20m

$719

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

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 November 12, 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 November 12, 2025.

The most flights from USIL to TR5 are scheduled on a Monday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 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 $575, Lufthansa can have you in Istanbul from Illinois in 20h 51m. 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 (68%), MIAT Mongolian (68%) or IndiGo (67%) 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 $368. While the most popular route (Chicago O'Hare Intl - Istanbul) can be booked for $588 on average, our data indicates $1,582 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
Dulles Intl to Istanbul flights
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Dallas/Fort Worth to Sabiha Gokcen flights
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George Bush Intcntl to Sabiha Gokcen flights
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Charlotte 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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air SerbiaCheapest$382Average$1,105FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$446Average$703FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$659Average$1,006FlexibilityNo cancel feeOn-time77%
LOTCheapest$683Average$995FlexibilityNo cancel feeOn-time81%
KLMCheapest$719Average$775FlexibilityNo cancel feeOn-time75%
Etihad AirwaysCheapest$721Average$852FlexibilityNo cancel feeOn-time75%
Royal JordanianCheapest$742Average$797FlexibilityNo cancel feeOn-time61%
LufthansaCheapest$780Average$1,153FlexibilityNo cancel feeOn-time76%
DeltaCheapest$781Average$1,101FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$785Average$1,217FlexibilityNo cancel feeOn-time67%

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