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$275+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
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 4, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/91:00 pmMLI - IST
2 stops24h 45mLufthansa
Thu 12/256:30 amIST - MLI
2 stops19h 24mLufthansa
Deal found 11/3$564
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:55 pmSTL - IST
2 stops24h 50mLufthansa
Tue 12/166:30 amIST - STL
2 stops24h 10mLufthansa
Deal found 11/2$564
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:24 pmSTL - IST
2 stops20h 21mUnited Airlines
Mon 12/86:30 amIST - STL
2 stops25h 15mUnited Airlines
Deal found 11/3$574
This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:05 pmSTL - IST
2 stops24h 45mDelta
Mon 12/84:50 amIST - STL
2 stops22h 43mDelta
Deal found 11/2$587
This Delta deal was found by Cheapflights users on 11/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:08 pmMLI - IST
2 stops25h 42mDelta
Wed 12/244:50 amIST - MLI
2 stops26h 40mDelta
Deal found 11/3$612
This Booking.com deal was found by Cheapflights users on 11/2. 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 12/212:55 pmSTL - IST
2 stops24h 50mLufthansa
Tue 12/97:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 11/2$659
This Air Canada deal was found by Cheapflights users on 11/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:05 pmSTL - IST
2 stops45h 40mMultiple Airlines
Tue 12/98:45 amIST - STL
3 stops39h 44mMultiple Airlines
Deal found 11/2$662
This KLM deal was found by Cheapflights users on 11/3. 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.
Mon 12/12:36 pmSTL - IST
2 stops17h 19mKLM
Sun 12/74:50 amIST - STL
2 stops20h 45mKLM
Deal found 11/3$668
This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/16:30 pmORD - IST
2 stops20h 15mMultiple Airlines
Mon 12/88:55 amIST - ORD
2 stops17h 25mMultiple Airlines
Deal found 11/3$696
This Mytrip deal was found by Cheapflights users on 11/2. 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.
Sun 11/238:00 amORD - IST
3 stops28h 00mMultiple Airlines
Sun 12/76:30 amIST - ORD
2 stops22h 35mMultiple Airlines
Deal found 11/2$705
This Gurufare deal was found by Cheapflights users on 11/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:15 amSTL - IST
2 stops34h 55mBritish Airways
Mon 12/223:15 pmIST - STL
2 stops37h 15mBritish Airways
Deal found 11/2$707
This Mytrip deal was found by Cheapflights users on 11/2. 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 12/26:30 pmORD - IST
2 stops17h 20mMultiple Airlines
Tue 12/98:15 amIST - ORD
2 stops18h 05mMultiple Airlines
Deal found 11/2$715

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 4, 2025.

Round-trip from

$551
(Cheapflightsfares)

One-way from

$275
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$908

Good round-trip deal

$663 or less

Good one-way deal

$449 or less
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 ($179 potential increase over avg. RT price).
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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
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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.
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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 November 4, 2025.
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

Fri 1/16

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Sun 1/25

6:30 am-1:55 pm

1 stop16h 25m

$551

MolineIstanbul

MLI - IST

MLIIST

Moline Quad-City

Tue 12/9

1:00 pm-10:45 pm

2 stops24h 45m

Istanbul

Thu 12/25

6:30 am-4:54 pm

2 stops19h 24m

$564

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 12/2

12:55 pm-10:45 pm

2 stops24h 50m

Istanbul

Tue 12/9

6:30 am-11:42 pm

2 stops26h 12m

$564

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 2/11

11:22 am-6:05 pm

2 stops21h 43m

Istanbul

Tue 2/17

6:30 am-12:05 am

2 stops26h 35m

$564

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 1/18

3:11 pm-10:45 pm

2 stops22h 34m

Istanbul

Mon 2/16

6:30 am-3:29 pm

2 stops41h 59m

$571

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 1/16

4:05 pm-6:05 pm

2 stops41h 00m

Istanbul

Sun 1/25

6:30 am-3:29 pm

2 stops41h 59m

$573

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 12/1

5:24 pm-10:45 pm

2 stops20h 21m

Istanbul

Mon 12/8

6:30 am-10:45 pm

2 stops25h 15m

$574

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 2/1

11:05 am-5:25 pm

2 stops21h 20m

Istanbul

Sun 2/8

8:20 am-6:14 pm

2 stops18h 54m

$575

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 12/2

6:05 pm-3:50 am

2 stops24h 45m

Istanbul

Mon 12/15

4:50 am-4:35 pm

2 stops20h 45m

$587

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 2/1

5:56 pm-3:50 am

2 stops24h 54m

Istanbul

Sat 2/7

4:50 am-11:25 pm

2 stops27h 35m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

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 Airport

What is the cheapest month to book a flight from Illinois to Istanbul Airport?

Currently, November is the cheapest month in which you can book a flight from Illinois to Istanbul Airport (average of $401). Flying from Illinois to Istanbul Airport in June is currently the most expensive (average of $854). 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 4, 2025.

When flying from Illinois to Istanbul Airport, 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 34% versus a flight in the afternoon.

What is the cheapest day to fly from Illinois to Istanbul Airport?

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 Airport 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 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 November 4, 2025.

The most flights from USIL to IST are scheduled on a Sunday (12 on average). You will have fewer flight options on Friday, 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 Airport?

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 21h 55m. Lufthansa provides one of the quickest options available for as low as $551. 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 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: Pakistan International Airlines (68%), MIAT Mongolian (68%), IndiGo (67%).

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

    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 $603 on average, our data indicates $1,582 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, November is the cheapest month in which you can book a flight from Illinois to Istanbul Airport (average of $401). Flying from Illinois to Istanbul Airport in June is currently the most expensive (average of $854). 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air SerbiaCheapest$382Average$1,105FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$446Average$703FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$659Average$1,033FlexibilityNo 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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