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Slovenia

$557+ Cheap flights from Illinois to Slovenia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LJU
Dec 30 — Jan 61
Tue 12/30
Tue 1/6
1 adult, Economy
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Cheap flight deals from Illinois to Slovenia

Keep the following information in mind while searching for Illinois to Slovenia flight deals. Data was last updated November 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$530
(FlightHub)

One-way from

$491
(Kiwi.com)

Popular in

June

Cheapest in

March
Provider with most accurate pricing for Chicago (CHI)-Ljubljana Joze Pucnik flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Ljubljana Joze Pucnik flights.
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From Illinois to Slovenia
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One-way flight from Illinois to Slovenia
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Highest demand for flights based on searches. 29% potential increase in price ($398 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($61 potential savings vs. average RT price).
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Find flight deals from Illinois to Slovenia

Cheapest flights from Illinois to Slovenia
Explore the most affordable flight options available from Illinois to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 30, 2025.

This Expedia deal was found by Cheapflights users on 11/29. 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.
Fri 12/126:10 pmORD - LJU
2 stops20h 40mMultiple Airlines
Mon 12/153:10 pmLJU - ORD
1 stop32h 10mMultiple Airlines
Deal found 11/29$819
This Expedia deal was found by Cheapflights users on 11/29. 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.
Fri 12/126:10 pmORD - LJU
2 stops20h 40mLufthansa
Mon 12/158:10 pmLJU - ORD
2 stops24h 00mLufthansa
Deal found 11/29$827
This KAYAK deal was found by Cheapflights users on 11/30. 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 12/163:45 pmORD - LJU
2 stops38h 50mSWISS
Mon 1/123:10 pmLJU - ORD
1 stop32h 10mSWISS
Deal found 11/30$935
This Gurufare deal was found by Cheapflights users on 11/28. 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.
Tue 12/166:35 pmORD - LJU
2 stops36h 00mMultiple Airlines
Tue 1/131:20 pmLJU - ORD
1 stop12h 05mMultiple Airlines
Deal found 11/28$941
This KAYAK deal was found by Cheapflights users on 11/30. 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 12/163:45 pmORD - LJU
2 stops38h 50mSWISS
Tue 1/132:55 pmLJU - ORD
2 stops30h 15mSWISS
Deal found 11/30$955
This Cheapflightsfares deal was found by Cheapflights users on 11/28. 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.
Thu 12/259:50 pmORD - LJU
2 stops29h 00mLufthansa
Wed 12/3110:35 amLJU - ORD
2 stops17h 44mLufthansa
Deal found 11/28$1,079
This Ovago deal was found by Cheapflights users on 11/28. 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 12/173:20 pmORD - LJU
1 stop11h 35mMultiple Airlines
Mon 1/123:10 pmLJU - ORD
1 stop32h 10mMultiple Airlines
Deal found 11/28$1,123
This Cheapflightsfares deal was found by Cheapflights users on 11/30. 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.
Wed 12/174:10 pmORD - LJU
2 stops13h 30mLufthansa
Mon 1/129:45 amLJU - ORD
2 stops34h 00mLufthansa
Deal found 11/30$1,138
This Delta deal was found by Cheapflights users on 11/28. 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 12/235:05 pmMDW - LJU
2 stops35h 35mDelta
Wed 12/3112:50 pmLJU - MDW
2 stops27h 15mDelta
Deal found 11/28$1,255
This Delta deal was found by Cheapflights users on 11/28. 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 12/235:05 pmMDW - LJU
2 stops35h 35mDelta
Mon 12/2912:50 pmLJU - MDW
2 stops40h 32mDelta
Deal found 11/28$1,317
This Delta deal was found by Cheapflights users on 11/28. 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 12/235:05 pmMDW - LJU
2 stops35h 35mDelta
Tue 12/3012:50 pmLJU - MDW
2 stops53h 16mDelta
Deal found 11/28$1,325
This Air France deal was found by Cheapflights users on 11/29. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/121:14 pmMDW - LJU
2 stops15h 26mAir France
Mon 12/1512:25 pmLJU - MDW
2 stops18h 22mAir France
Deal found 11/29$1,361

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Slovenia 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 30, 2025.
Use the filters below to find and compare flights from Illinois to Slovenia that are best for you.

Fly from

Illinois

Fly to

Slovenia

Route

Depart

Return

Price

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Tue 4/28

7:50 pm-7:30 pm

1 stop16h 40m

Ljubljana Joze Pucnik

Tue 5/12

8:25 pm-9:40 am

1 stop20h 15m

$557

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Fri 2/27

8:20 pm-8:25 am

1 stop29h 05m

Ljubljana Joze Pucnik

Mon 3/2

9:20 am-10:05 am

1 stop31h 45m

$605

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Sun 4/12

11:25 am-7:30 pm

1 stop25h 05m

Ljubljana Joze Pucnik

Sun 4/19

9:40 am-9:40 am

1 stop31h 00m

$663

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Wed 1/28

8:20 pm-6:40 pm

1 stop15h 20m

Ljubljana Joze Pucnik

Sun 2/1

7:35 pm-6:25 pm

1 stop29h 50m

$683

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Sun 4/12

9:40 am-2:15 pm

2 stops21h 35m

Ljubljana Joze Pucnik

Sun 4/19

9:25 pm-7:35 pm

2 stops29h 10m

$697

ChicagoLjubljana

MDW - LJU

MDWLJU

Chicago Midway

Tue 4/7

1:09 pm-11:35 am

2 stops15h 26m

Ljubljana Joze Pucnik

Tue 4/14

6:00 am-4:25 pm

2 stops17h 25m

$726

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Mon 5/11

5:10 pm-5:15 pm

2 stops41h 05m

Ljubljana Joze Pucnik

Tue 5/19

5:00 pm-3:55 pm

1 stop29h 55m

$726

ChicagoLjubljana

MDW - LJU

MDWLJU

Chicago Midway

Tue 3/3

1:49 pm-11:40 am

2 stops14h 51m

Ljubljana Joze Pucnik

Tue 3/10

12:50 pm-9:55 am

2 stops27h 05m

$728

ChicagoLjubljana

MDW - LJU

MDWLJU

Chicago Midway

Mon 2/23

1:28 pm-12:20 pm

2 stops15h 52m

Ljubljana Joze Pucnik

Fri 2/27

12:25 pm-10:42 pm

2 stops17h 17m

$739

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Sat 2/7

9:09 pm-9:40 am

2 stops29h 31m

Ljubljana Joze Pucnik

Wed 2/18

10:00 am-6:25 pm

1 stop15h 25m

$756

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/29

Showing 1-10 of 20 results
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Best time to book a flight from Illinois to Slovenia

Have a flexible travel schedule? Discover the best time to fly to Slovenia 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 Slovenia

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Slovenia (average of $533). Flying from Illinois to Slovenia in June is currently the most expensive (average of $1,113). 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 SI?

Find hourly flight availability from Illinois to Slovenia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 30, 2025.

One of the essential ways to save on airfare from Illinois to Slovenia is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 29% on airfare.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Slovenia. 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 Slovenia?

    Airlines like Turkish Airlines and Delta fly from Illinois to Slovenia in about 14h 51m. The time it takes to get you to your destination can typically vary by up to 8h 59m. Illinois and Slovenia are separated by a distance of 4706 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Illinois to Slovenia that include hotel bookings?

    Yes. In addition to deals on Illinois to Slovenia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Slovenia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Slovenia.

  • Can I find deals for business class flights from Illinois to Slovenia?

    Yes. Cheapflights offers flight deals from Illinois to Slovenia 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 Slovenia?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Slovenia (average of $533). Flying from Illinois to Slovenia in June is currently the most expensive (average of $1,113). 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

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Alternative routes for Illinois to Slovenia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Illinois to Slovenia

Discover the top 5 airlines that operate flights from Illinois to Slovenia. 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$580Average$727FlexibilityNo cancel feeOn-time77%
KLMCheapest$583Average$801FlexibilityNo cancel feeOn-time75%
SWISSCheapest$716Average$883FlexibilityNo cancel feeOn-time79%
Air SerbiaCheapest$746Average$887FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$849Average$1,061FlexibilityNo cancel feeOn-time76%

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