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Slovenia

$261+ Cheap flights from Illinois to Slovenia

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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LJU
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$543
(Delta)

One-way from

$261
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$897
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. 30% potential increase in price ($426 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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Average for round-trip flights in October 2025
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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 October 16, 2025.

This Delta deal was found by Cheapflights users on 10/13. 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.
Sun 11/165:20 pmORD - LJU
1 stop11h 20mDelta
Tue 12/212:50 pmLJU - ORD
1 stop32h 30mDelta
Deal found 10/13$540
This Delta deal was found by Cheapflights users on 10/13. 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 12/37:10 amORD - LJU
2 stops21h 30mDelta
Sun 12/712:45 pmLJU - ORD
1 stop32h 35mDelta
Deal found 10/13$543
This Air France deal was found by Cheapflights users on 10/14. 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.
Tue 11/112:35 pmORD - LJU
2 stops14h 45mAir France
Tue 11/1812:50 pmLJU - ORD
1 stop32h 30mAir France
Deal found 10/14$549
This Delta deal was found by Cheapflights users on 10/13. 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.
Thu 11/2710:35 amORD - LJU
2 stops18h 45mDelta
Thu 12/412:50 pmLJU - ORD
2 stops18h 12mDelta
Deal found 10/13$559
This Delta deal was found by Cheapflights users on 10/14. 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 11/111:47 pmMDW - LJU
2 stops15h 33mDelta
Tue 11/1812:50 pmLJU - MDW
2 stops17h 50mDelta
Deal found 10/14$559
This Delta deal was found by Cheapflights users on 10/15. 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 12/31:14 pmMDW - LJU
2 stops15h 26mDelta
Sun 12/712:25 pmLJU - MDW
2 stops31h 09mDelta
Deal found 10/15$564
This FlightHub deal was found by Cheapflights users on 10/14. 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 11/1111:50 amORD - LJU
1 stop23h 50mTurkish Airlines
Tue 11/189:20 amLJU - ORD
1 stop16h 05mTurkish Airlines
Deal found 10/14$567
This KLM deal was found by Cheapflights users on 10/13. 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.
Wed 12/310:49 amMDW - LJU
2 stops17h 51mKLM
Sun 12/712:45 pmLJU - MDW
2 stops34h 58mKLM
Deal found 10/13$605
This KLM deal was found by Cheapflights users on 10/14. 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.
Wed 10/151:08 pmMDW - LJU
2 stops15h 27mKLM
Wed 10/2212:20 pmLJU - MDW
2 stops16h 54mKLM
Deal found 10/14$889
This KLM deal was found by Cheapflights users on 10/14. 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 10/201:08 pmMDW - LJU
2 stops15h 27mKLM
Mon 10/2712:50 pmLJU - MDW
2 stops26h 50mKLM
Deal found 10/14$1,401
This Delta deal was found by Cheapflights users on 10/14. 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.
Sun 11/239:41 amMDW - LJU
2 stops18h 59mDelta
Sun 11/3012:45 pmLJU - MDW
2 stops17h 55mDelta
Deal found 10/14$2,257
This Delta deal was found by Cheapflights users on 10/15. 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.
Fri 10/1710:35 amMDW - LJU
2 stops18h 25mDelta
Sun 10/2612:45 pmLJU - MDW
2 stops26h 55mDelta
Deal found 10/15$2,557

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 October 16, 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

Sun 11/16

5:20 pm-11:40 am

1 stop11h 20m

Ljubljana Joze Pucnik

Tue 12/2

12:50 pm-2:20 pm

1 stop32h 30m

$540

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Wed 12/3

7:10 am-11:40 am

2 stops21h 30m

Ljubljana Joze Pucnik

Sun 12/7

12:45 pm-2:20 pm

1 stop32h 35m

$543

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Mon 2/9

4:25 pm-12:20 pm

1 stop12h 55m

Ljubljana Joze Pucnik

Thu 2/19

12:50 pm-2:20 pm

1 stop32h 30m

$544

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Mon 2/9

4:25 pm-12:20 pm

1 stop12h 55m

Ljubljana Joze Pucnik

Fri 2/20

12:50 pm-2:20 pm

1 stop32h 30m

$545

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Sat 2/7

7:30 am-11:40 am

2 stops21h 10m

Ljubljana Joze Pucnik

Wed 2/18

12:50 pm-11:54 pm

2 stops18h 04m

$553

ChicagoLjubljana

MDW - LJU

MDWLJU

Chicago Midway

Tue 11/11

1:47 pm-12:20 pm

2 stops15h 33m

Ljubljana Joze Pucnik

Tue 11/18

12:50 pm-11:40 pm

2 stops17h 50m

$559

ChicagoLjubljana

MDW - LJU

MDWLJU

Chicago Midway

Wed 12/3

1:14 pm-11:40 am

2 stops15h 26m

Ljubljana Joze Pucnik

Sun 12/7

12:25 pm-12:34 pm

2 stops31h 09m

$564

ChicagoLjubljana

MDW - LJU

MDWLJU

Chicago Midway

Wed 12/3

10:49 am-11:40 am

2 stops17h 51m

Ljubljana Joze Pucnik

Sun 12/7

12:45 pm-4:43 pm

2 stops34h 58m

$605

ChicagoLjubljana

MDW - LJU

MDWLJU

Chicago Midway

Tue 3/3

1:00 pm-11:40 am

2 stops15h 40m

Ljubljana Joze Pucnik

Tue 3/10

12:50 pm-9:56 am

2 stops27h 06m

$728

ChicagoLjubljana

MDW - LJU

MDWLJU

Chicago Midway

Tue 4/7

1:00 pm-11:35 am

2 stops15h 35m

Ljubljana Joze Pucnik

Tue 4/14

12:20 pm-9:45 pm

2 stops16h 25m

$733

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 21 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 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 October 16, 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 Delta, Air France, and KLM fly from Illinois to Slovenia in about 11h 20m. The time it takes to get you to your destination can typically vary by up to 1h 35m. Illinois and Slovenia are separated by a distance of 4703 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.

See more FAQs

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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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$531Average$711FlexibilityNo cancel feeOn-time77%
KLMCheapest$590Average$929FlexibilityNo cancel feeOn-time75%
Air SerbiaCheapest$746Average$852FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$820Average$883FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$849Average$1,037FlexibilityNo cancel feeOn-time76%

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