HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Istanbul

$292+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Mar 20 — Mar 271
Fri 3/20
Fri 3/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Istanbul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 18, 2026.

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 Justfly.com deal was found by Cheapflights users on 2/16. 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 11/43:50 pm
STL
-
IST
1 stop17h 15m
Lufthansa
Wed 11/256:30 am
IST
-
STL
1 stop16h 25m
Lufthansa
Deal found 2/16$577
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:45 am
STL
-
IST
2 stops29h 40m
United Airlines
Thu 4/305:40 am
IST
-
STL
2 stops25h 05m
United Airlines
Deal found 2/17$579
This Billigflug deal was found by Cheapflights users on 2/16. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:45 am
STL
-
IST
2 stops29h 50m
Multiple Airlines
Mon 4/273:45 am
IST
-
STL
2 stops25h 23m
Multiple Airlines
Deal found 2/16$581
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 flugladen.de deal was found by Cheapflights users on 2/16. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/123:30 pm
STL
-
IST
1 stop22h 05m
Lufthansa
Tue 4/281:55 pm
IST
-
STL
1 stop31h 30m
Lufthansa
Deal found 2/16$588
This Delta deal was found by Cheapflights users on 2/15. 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 3/185:59 pm
STL
-
IST
2 stops25h 51m
Delta
Tue 3/244:50 am
IST
-
STL
2 stops24h 16m
Delta
Deal found 2/15$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 2/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:00 am
STL
-
IST
2 stops32h 45m
United Airlines
Wed 4/155:40 am
IST
-
STL
1 stop15h 45m
United Airlines
Deal found 2/17$593
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:15 am
STL
-
IST
3 stops31h 00m
United Airlines
Mon 4/271:55 pm
IST
-
STL
2 stops40h 33m
United Airlines
Deal found 2/17$598
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:35 pm
STL
-
SAW
2 stops15h 30m
KLM
Tue 5/58:50 am
SAW
-
STL
2 stops37h 39m
KLM
Deal found 2/17$609

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 18, 2026.

Round-trip from

$571
(Justfly.com)

One-way from

$292
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$793
From Illinois to Istanbul
Search Deals
One-way flight from Illinois to Istanbul
Search Deals
Highest demand for flights based on searches. 16% 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

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 18, 2026.
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

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

Wed 3/18

5:59 pm-3:50 am

2 stops25h 51m

Istanbul

Tue 3/24

4:50 am-9:06 pm

2 stops24h 16m

$590

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 4/12

4:05 pm-9:35 pm

2 stops21h 30m

Istanbul

Tue 4/28

1:55 pm-1:25 pm

1 stop31h 30m

$594

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 3/18

6:00 am-10:45 pm

2 stops32h 45m

Istanbul

Wed 4/15

5:40 am-1:25 pm

1 stop15h 45m

$594

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Thu 3/19

6:00 am-10:45 pm

2 stops32h 45m

Istanbul

Tue 4/7

5:40 am-10:28 pm

2 stops24h 48m

$604

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 3/24

3:30 pm-10:45 pm

2 stops23h 15m

Istanbul

Wed 4/8

5:40 am-10:56 pm

2 stops25h 16m

$604

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 4/27

5:35 pm-5:05 pm

2 stops15h 30m

Istanbul Sabiha Gokcen

Tue 5/5

8:50 am-2:29 pm

2 stops37h 39m

$609

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 3/24

5:59 pm-3:50 am

2 stops25h 51m

Istanbul

Tue 4/7

6:00 am-4:32 pm

2 stops18h 32m

$615

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 3/18

5:59 pm-3:50 am

2 stops25h 51m

Istanbul

Wed 4/15

6:00 am-8:44 pm

2 stops22h 44m

$615

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 3/23

6:59 pm-3:50 am

2 stops24h 51m

Istanbul

Mon 4/6

5:20 pm-8:42 pm

2 stops35h 22m

$615

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

Showing 1-10 of 60 results
1
2
3
...
6

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, April is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $423). Flying from Illinois to Istanbul in June is currently the most expensive (average of $838). 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 18, 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 as you normally would.

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 February 18, 2026.

The most flights from USIL to TR5 are scheduled on a Monday (10 on average). You will have fewer flight options on Tuesday, 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 $609, Delta can have you in Istanbul from Illinois in 15h 30m. 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 ($319), 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 Uzbekistan Airways (53%), Pakistan International Airlines (53%) or MIAT Mongolian (53%) 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 $398. While the most popular route (Chicago O'Hare Intl - Istanbul) can be booked for $649 on average, our data indicates $1,812 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, April is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $423). Flying from Illinois to Istanbul in June is currently the most expensive (average of $838). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Los Angeles to Istanbul flights
O'Hare Intl to Istanbul flights
Seattle to Istanbul flights
John F Kennedy Intl to Sabiha Gokcen flights
San Francisco to Istanbul flights
Dallas/Fort Worth to Istanbul flights
Newark to Istanbul flights
Boston to Istanbul flights
LaGuardia to Istanbul flights
Miami to Istanbul flights
Hobby to Istanbul flights
Newark to Sabiha Gokcen flights
Detroit to Istanbul flights
Atlanta to Istanbul flights
Reagan-National to Istanbul flights
George Bush Intcntl to Istanbul flights
Baltimore to Istanbul flights
Dulles Intl to Sabiha Gokcen flights
Los Angeles to Sabiha Gokcen flights
Seattle to Sabiha Gokcen flights
LaGuardia to Sabiha Gokcen flights
Boston to Sabiha Gokcen flights
San Francisco to Sabiha Gokcen flights
O'Hare Intl to Sabiha Gokcen flights
Miami to Sabiha Gokcen flights
Dallas/Fort Worth to Sabiha Gokcen flights
Reagan-National to Sabiha Gokcen flights
Love Field to Istanbul flights
Orlando to Istanbul flights
Denver to Istanbul flights
Hobby to Sabiha Gokcen flights
Austin to Istanbul flights
Atlanta to Sabiha Gokcen flights
Ontario to Istanbul flights
Detroit to Sabiha Gokcen flights
George Bush Intcntl to Sabiha Gokcen flights
Baltimore to Sabiha Gokcen flights
San Jose to Istanbul flights
Raleigh to Istanbul flights
Oakland to Istanbul flights
Minneapolis to Istanbul flights
Midway to Istanbul flights
Fort Lauderdale to Istanbul flights
Austin to Sabiha Gokcen flights
Denver to Sabiha Gokcen flights
Santa Ana to Istanbul flights
Portland to Istanbul flights
Oakland to Sabiha Gokcen 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 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
Royal JordanianCheapest$127Average$782FlexibilityNo cancel feeOn-time61%
IcelandairCheapest$421Average$655FlexibilityNo cancel feeOn-time76%
Air SerbiaCheapest$422Average$858FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$521Average$598FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$524Average$989FlexibilityNo cancel feeOn-time71%
DeltaCheapest$586Average$1,111FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$604Average$975FlexibilityNo cancel feeOn-time77%
KLMCheapest$719Average$775FlexibilityNo cancel feeOn-time75%
LOTCheapest$757Average$1,053FlexibilityNo cancel feeOn-time81%
Etihad AirwaysCheapest$757Average$852FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights