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$292+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
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 February 21, 2026.

This United Airlines deal was found by Cheapflights users on 2/18. 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.
Wed 4/158:15 pm
STL
-
IST
2 stops17h 10m
United Airlines
Wed 4/225:40 am
IST
-
STL
1 stop15h 45m
United Airlines
Deal found 2/18$568
This Justfly.com deal was found by Cheapflights users on 2/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:35 pm
STL
-
IST
2 stops34h 25m
Lufthansa
Mon 5/43:45 am
IST
-
STL
2 stops28h 12m
Lufthansa
Deal found 2/17$571
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Sun 4/128:15 pm
STL
-
IST
2 stops17h 20m
United Airlines
Tue 4/281:55 pm
IST
-
STL
2 stops26h 30m
United Airlines
Deal found 2/18$579
This Mytrip deal was found by Cheapflights users on 2/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:05 pm
STL
-
IST
2 stops36h 55m
Multiple Airlines
Tue 5/55:50 pm
IST
-
STL
1 stop27h 35m
Multiple Airlines
Deal found 2/17$585
This Justfly.com deal was found by Cheapflights users on 2/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:30 pm
STL
-
IST
1 stop21h 55m
Lufthansa
Mon 4/205:55 pm
IST
-
STL
2 stops38h 02m
Lufthansa
Deal found 2/17$587
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Sun 3/224:50 pm
STL
-
IST
1 stop21h 55m
United Airlines
Wed 4/15:40 am
IST
-
STL
1 stop15h 45m
United Airlines
Deal found 2/18$589
This Delta deal was found by Cheapflights users on 2/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:39 pm
STL
-
IST
2 stops29h 51m
Delta
Mon 4/205:20 pm
IST
-
STL
2 stops31h 30m
Delta
Deal found 2/17$590
This FlightHub deal was found by Cheapflights users on 2/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:35 pm
STL
-
IST
2 stops42h 50m
Lufthansa
Mon 4/275:55 pm
IST
-
STL
2 stops35h 13m
Lufthansa
Deal found 2/17$592
This United Airlines deal was found by Cheapflights users on 2/18. 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 3/243:30 pm
STL
-
IST
2 stops23h 15m
United Airlines
Wed 4/15:40 am
IST
-
STL
1 stop15h 45m
United Airlines
Deal found 2/18$593
This KAYAK deal was found by Cheapflights users on 2/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/224:50 pm
STL
-
IST
1 stop21h 55m
Lufthansa
Fri 4/35:40 am
IST
-
STL
1 stop15h 45m
Lufthansa
Deal found 2/18$594
This KAYAK deal was found by Cheapflights users on 2/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/237:00 pm
STL
-
IST
2 stops19h 45m
Lufthansa
Wed 4/15:40 am
IST
-
STL
1 stop15h 45m
Lufthansa
Deal found 2/18$598
This Mytrip deal was found by Cheapflights users on 2/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:25 pm
ORD
-
IST
3 stops35h 30m
Multiple Airlines
Mon 5/113:25 pm
IST
-
ORD
3 stops34h 50m
Multiple Airlines
Deal found 2/17$694

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 February 21, 2026.

Round-trip from

$568
(United Airlines)

One-way from

$292
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$793

Good round-trip deal

$683 or less

Good one-way deal

$507 or less
From Illinois to Istanbul
Search Deals
One-way flight from Illinois to Istanbul
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($190 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Istanbul.
Search Deals
Price to beat on a one-way flight from Illinois to Istanbul.
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 February 21, 2026.
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 4/15

8:15 pm-9:25 pm

2 stops17h 10m

Istanbul

Wed 4/22

5:40 am-1:25 pm

1 stop15h 45m

$568

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 4/12

8:15 pm-9:35 pm

2 stops17h 20m

Istanbul

Tue 4/28

1:55 pm-8:25 am

2 stops26h 30m

$579

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 3/22

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Wed 4/1

5:40 am-1:25 pm

1 stop15h 45m

$589

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 4/8

1:39 pm-3:30 am

2 stops29h 51m

Istanbul

Mon 4/20

5:20 pm-4:50 pm

2 stops31h 30m

$590

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 3/22

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Thu 4/2

5:40 am-10:56 pm

2 stops25h 16m

$599

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 4/12

8:15 pm-9:35 pm

2 stops17h 20m

Istanbul

Tue 4/28

5:50 pm-1:25 pm

1 stop27h 35m

$603

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 3/24

3:30 pm-10:45 pm

2 stops23h 15m

Istanbul

Tue 4/7

5:40 am-10:28 pm

2 stops24h 48m

$604

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 3/23

7:00 pm-10:45 pm

2 stops19h 45m

Istanbul

Tue 3/31

3:45 am-9:08 pm

2 stops25h 23m

$608

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 3/24

3:30 pm-10:45 pm

2 stops23h 15m

Istanbul

Thu 4/2

1:55 pm-1:25 pm

1 stop31h 30m

$614

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 3/23

1:39 pm-3:50 am

2 stops30h 11m

Istanbul

Tue 4/7

6:00 am-4:32 pm

2 stops18h 32m

$615

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 58 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, April is the cheapest month in which you can book a flight from Illinois to Istanbul Airport (average of $425). Flying from Illinois to Istanbul Airport in June is currently the most expensive (average of $840). 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 February 21, 2026.

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 February 21, 2026.

The most flights from USIL to IST are scheduled on a Wednesday (10 on average). You will have fewer flight options on Monday, 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 Airport?

    A quick flight from Illinois to Istanbul Airport can take about 17h 10m. United Airlines provides one of the quickest options available for as low as $568. The distance from Illinois to Istanbul Airport is about 5707 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Illinois to Istanbul Airport one-way?

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $319. Air Serbia flights start at $443 while deals on Royal Jordanian start at $447 one-way.

  • 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: Uzbekistan Airways (53%), Pakistan International Airlines (53%), MIAT Mongolian (53%).

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

    Looking at all options, your cheapest flight can be booked for $398. While the most popular route (Chicago O'Hare Intl - Istanbul) can be booked for $626 on average, our data indicates $1,812 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, April is the cheapest month in which you can book a flight from Illinois to Istanbul Airport (average of $425). Flying from Illinois to Istanbul Airport in June is currently the most expensive (average of $840). 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?

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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 February 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Royal JordanianCheapest$127Average$782FlexibilityNo cancel feeOn-time61%
IcelandairCheapest$421Average$655FlexibilityNo cancel feeOn-time76%
Air SerbiaCheapest$439Average$858FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$521Average$616FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$524Average$989FlexibilityNo cancel feeOn-time71%
DeltaCheapest$586Average$1,095FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$610Average$988FlexibilityNo cancel feeOn-time77%
KLMCheapest$719Average$775FlexibilityNo cancel feeOn-time75%
LOTCheapest$755Average$1,051FlexibilityNo cancel feeOn-time81%
Etihad AirwaysCheapest$757Average$852FlexibilityNo cancel feeOn-time75%

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