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$258+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
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 11, 2026.

This oojo deal was found by Cheapflights users on 2/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:59 am
STL
-
IST
2 stops29h 01m
British Airways
Tue 3/177:35 am
IST
-
STL
2 stops18h 23m
British Airways
Deal found 2/10$561
This Justfly.com deal was found by Cheapflights users on 2/7. 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 4/293:30 pm
STL
-
IST
1 stop13h 30m
Lufthansa
Mon 5/43:45 am
IST
-
STL
2 stops25h 23m
Lufthansa
Deal found 2/7$566
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Mon 4/2710:00 am
STL
-
IST
2 stops19h 00m
United Airlines
Tue 5/51:55 pm
IST
-
STL
2 stops30h 11m
United Airlines
Deal found 2/8$576
This Expedia deal was found by Cheapflights users on 2/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:05 pm
STL
-
IST
2 stops21h 20m
Multiple Airlines
Tue 5/55:50 pm
IST
-
STL
1 stop27h 35m
Multiple Airlines
Deal found 2/8$592
This Booking.com deal was found by Cheapflights users on 2/8. 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.
Wed 3/1811:28 am
STL
-
IST
2 stops27h 17m
Lufthansa
Wed 4/155:40 am
IST
-
STL
1 stop15h 45m
Lufthansa
Deal found 2/8$593
This United Airlines deal was found by Cheapflights users on 2/11. 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.
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 2/11$594
This Mytrip deal was found by Cheapflights users on 2/8. 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 3/189:37 am
STL
-
IST
2 stops30h 48m
British Airways
Wed 3/257:35 am
IST
-
STL
2 stops24h 09m
British Airways
Deal found 2/8$600
This KLM deal was found by Cheapflights users on 2/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:59 pm
STL
-
SAW
2 stops19h 21m
KLM
Tue 3/179:00 am
SAW
-
STL
2 stops19h 42m
KLM
Deal found 2/10$610
This Mytrip deal was found by Cheapflights users on 2/8. 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
-
SAW
2 stops19h 45m
Multiple Airlines
Tue 5/55:40 pm
SAW
-
STL
2 stops27h 45m
Multiple Airlines
Deal found 2/8$672
This KAYAK deal was found by Cheapflights users on 2/9. 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.
Tue 10/67:00 am
ORD
-
IST
2 stops36h 40m
Scandinavian Airlines
Sat 10/244:30 am
IST
-
ORD
2 stops25h 34m
Scandinavian Airlines
Deal found 2/9$696
This Mytrip deal was found by Cheapflights users on 2/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/812:50 pm
ORD
-
SAW
3 stops20h 00m
Multiple Airlines
Wed 4/1511:50 am
SAW
-
ORD
2 stops32h 45m
Multiple Airlines
Deal found 2/10$696
This Mytrip deal was found by Cheapflights users on 2/7. 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.
Sat 4/257:25 pm
ORD
-
IST
3 stops24h 15m
Multiple Airlines
Tue 5/54:40 pm
IST
-
ORD
1 stop29h 50m
Multiple Airlines
Deal found 2/7$697

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 11, 2026.

Round-trip from

$561
(oojo)

One-way from

$258
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$755
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 ($194 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 11, 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

Mon 4/27

10:00 am-1:00 pm

2 stops19h 00m

Istanbul

Tue 5/5

1:55 pm-12:06 pm

2 stops30h 11m

$576

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 4/29

3:30 pm-1:00 pm

1 stop13h 30m

Istanbul

Tue 5/5

1:55 pm-1:25 pm

1 stop31h 30m

$578

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 4/27

4:05 pm-9:25 pm

2 stops21h 20m

Istanbul

Tue 5/5

5:50 pm-1:25 pm

1 stop27h 35m

$592

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 3/18

11:28 am-10:45 pm

2 stops27h 17m

Istanbul

Wed 4/15

5:40 am-1:25 pm

1 stop15h 45m

$593

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 3/18

4:05 pm-10:45 pm

2 stops46h 40m

Istanbul

Wed 4/15

5:40 am-1:25 pm

1 stop15h 45m

$597

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Tue 3/10

5:59 pm-9:20 pm

2 stops19h 21m

Istanbul Sabiha Gokcen

Tue 3/17

9:00 am-8:42 pm

2 stops19h 42m

$610

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 3/18

4:05 pm-10:45 pm

2 stops46h 40m

Istanbul

Wed 4/15

4:30 am-3:24 pm

2 stops42h 54m

$610

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 4/24

3:30 pm-9:25 pm

1 stop21h 55m

Istanbul

Thu 4/30

3:45 am-9:08 pm

2 stops25h 23m

$617

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 4/24

7:45 am-9:25 pm

2 stops29h 40m

Istanbul

Fri 5/1

1:55 pm-9:08 pm

2 stops39h 13m

$634

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 4/27

4:05 pm-7:50 pm

2 stops19h 45m

Istanbul Sabiha Gokcen

Tue 5/5

5:40 pm-1:25 pm

2 stops27h 45m

$672

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

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, April is the cheapest month in which you can book a flight from Illinois to Istanbul (average of $422). Flying from Illinois to Istanbul in June is currently the most expensive (average of $843). 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 11, 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 11, 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).

How much does it cost to fly round-trip from Illinois to Istanbul?

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 $566, British Airways can have you in Istanbul from Illinois in 13h 30m. 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 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%), Turkish Airlines (53%) or Pakistan International Airlines (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 $381. While the most popular route (Chicago O'Hare Intl - Istanbul) can be booked for $660 on average, our data indicates $1,795 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 $422). Flying from Illinois to Istanbul in June is currently the most expensive (average of $843). 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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Royal JordanianCheapest$127Average$782FlexibilityNo cancel feeOn-time61%
Air SerbiaCheapest$382Average$858FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$421Average$655FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$524Average$989FlexibilityNo cancel feeOn-time71%
DeltaCheapest$586Average$1,148FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$602Average$976FlexibilityNo cancel feeOn-time77%
KLMCheapest$719Average$775FlexibilityNo cancel feeOn-time75%
LOTCheapest$757Average$1,058FlexibilityNo cancel feeOn-time81%
Etihad AirwaysCheapest$757Average$852FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$762Average$1,177FlexibilityNo cancel feeOn-time76%

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