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Illinois

$477+ Cheap flights from Slovenia to Illinois

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
LJU — ORD
Aug 18 — Aug 251
Mon 8/18
Mon 8/25
1 adult, Economy
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Cheap flight deals from Slovenia to Illinois

Keep the following information in mind while searching for Slovenia to Illinois flight deals. Data was last updated August 13, 2025.

Round-trip from

$645
(SWISS)

One-way from

$477
(Trip.com)

Popular in

December

Cheapest in

November

Average price

$941
From Slovenia to Illinois
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One-way flight from Slovenia to Illinois
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Highest demand for flights based on searches. 2% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Slovenia to Illinois

Cheapest flights from Slovenia to Illinois
Explore the most affordable flight options available from Slovenia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2025.

This SWISS deal was found by Cheapflights users on 8/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:25 pmLJU - ORD
1 stop27h 30mSWISS
Fri 10/317:50 pmORD - LJU
1 stop12h 10mSWISS
Deal found 8/11$645
This SWISS deal was found by Cheapflights users on 8/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:20 pmLJU - ORD
1 stop27h 35mSWISS
Mon 9/87:05 pmORD - LJU
1 stop32h 00mSWISS
Deal found 8/11$646
This Lufthansa deal was found by Cheapflights users on 8/12. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/210:50 amLJU - ORD
1 stop12h 05mMultiple Airlines
Tue 9/93:05 pmORD - LJU
1 stop11h 20mMultiple Airlines
Deal found 8/12$650
This Lufthansa deal was found by Cheapflights users on 8/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/21:55 pmLJU - ORD
1 stop13h 00mMultiple Airlines
Sun 11/26:50 pmORD - LJU
1 stop20h 35mMultiple Airlines
Deal found 8/11$652
This Lufthansa deal was found by Cheapflights users on 8/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/41:50 pmLJU - ORD
1 stop13h 05mMultiple Airlines
Mon 11/36:50 pmORD - LJU
1 stop12h 15mMultiple Airlines
Deal found 8/11$666
This SWISS deal was found by Cheapflights users on 8/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:20 pmLJU - ORD
1 stop27h 35mSWISS
Sun 9/287:05 pmORD - LJU
1 stop16h 30mSWISS
Deal found 8/11$674
This SWISS deal was found by Cheapflights users on 8/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:20 pmLJU - ORD
2 stops23h 45mSWISS
Tue 11/46:50 pmORD - LJU
1 stop12h 15mSWISS
Deal found 8/11$675
This Lufthansa deal was found by Cheapflights users on 8/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/31:55 pmLJU - ORD
1 stop13h 00mMultiple Airlines
Sun 11/26:50 pmORD - LJU
1 stop12h 30mMultiple Airlines
Deal found 8/11$676
This SWISS deal was found by Cheapflights users on 8/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:25 pmLJU - ORD
1 stop27h 30mSWISS
Sat 11/17:50 pmORD - LJU
1 stop20h 40mSWISS
Deal found 8/11$678
This Delta deal was found by Cheapflights users on 8/12. 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 9/212:35 pmLJU - ORD
2 stops16h 21mDelta
Tue 9/910:15 amORD - LJU
2 stops18h 20mDelta
Deal found 8/12$681
This KLM deal was found by Cheapflights users on 8/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:05 amLJU - ORD
1 stop12h 05mKLM
Sat 11/15:25 pmORD - LJU
1 stop12h 55mKLM
Deal found 8/11$682
This Air Serbia deal was found by Cheapflights users on 8/11. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/42:55 pmLJU - ORD
1 stop13h 05mAir Serbia
Sat 11/15:30 pmORD - LJU
1 stop20h 25mAir Serbia
Deal found 8/11$685

Cheapflights Fare Finder

 
Customize your flight search to find flights from Slovenia to Illinois 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 August 13, 2025.
Use the filters below to find and compare flights from Slovenia to Illinois that are best for you.

Fly from

Slovenia

Fly to

Illinois

Route

Depart

Return

Price

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Wed 10/1

7:25 pm-3:55 pm

1 stop27h 30m

Chicago O'Hare Intl

Sat 10/11

7:05 pm-10:05 am

1 stop32h 00m

$645

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Thu 8/28

10:50 am-3:55 pm

1 stop12h 05m

Chicago O'Hare Intl

Tue 9/2

7:05 pm-10:05 am

1 stop32h 00m

$645

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Wed 10/1

7:25 pm-3:55 pm

1 stop27h 30m

Chicago O'Hare Intl

Fri 10/31

7:50 pm-2:00 pm

1 stop12h 10m

$645

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Wed 10/1

7:25 pm-3:55 pm

1 stop27h 30m

Chicago O'Hare Intl

Sun 11/2

6:50 pm-2:20 pm

1 stop12h 30m

$645

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Mon 9/1

7:20 pm-3:55 pm

1 stop27h 35m

Chicago O'Hare Intl

Mon 9/8

7:05 pm-10:05 am

1 stop32h 00m

$646

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Tue 9/2

10:50 am-3:55 pm

1 stop12h 05m

Chicago O'Hare Intl

Tue 9/9

3:05 pm-9:25 am

1 stop11h 20m

$650

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Thu 10/2

1:55 pm-7:55 pm

1 stop13h 00m

Chicago O'Hare Intl

Mon 11/3

6:50 pm-10:25 pm

1 stop20h 35m

$652

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Thu 10/2

1:55 pm-7:55 pm

1 stop13h 00m

Chicago O'Hare Intl

Fri 10/31

7:50 pm-2:00 pm

1 stop12h 10m

$652

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Thu 10/2

1:55 pm-7:55 pm

1 stop13h 00m

Chicago O'Hare Intl

Sun 11/2

6:50 pm-10:25 pm

1 stop20h 35m

$652

LjubljanaChicago

LJU - ORD

LJUORD

Ljubljana Joze Pucnik

Thu 10/2

1:55 pm-7:55 pm

1 stop13h 00m

Chicago O'Hare Intl

Tue 11/4

6:50 pm-10:25 pm

1 stop20h 35m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 32 results
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Best time to book a flight from Slovenia to Illinois

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

What is the cheapest time of day to fly from SI to IL?

Find hourly flight availability from Slovenia to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 13, 2025.

When flying from Slovenia to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated August 13, 2025.
Peruse reviews from past customers who have flown with SWISS, Turkish Airlines, and Lufthansa from Slovenia to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.6
Good
1,698 reviews

Overall

7.6

Crew

8.2

Entertainment

6.8

Comfort

7.4

Boarding

7.7

Food

7.1

Reviews

1 / 20
10.0
Excellent

William,Sep 2023

ORD - ZRH

SWISS knows what they're doing their business class is remarkable service is second to none.
SWISS
7.6
Good
1,698 reviews
SWISS
7.6
Good
1,698 reviews

Overall

7.6

Crew

8.2

Entertainment

6.8

Comfort

7.4

Boarding

7.7

Food

7.1

Reviews

1 / 20
10.0
Excellent

William,Sep 2023

ORD - ZRH

SWISS knows what they're doing their business class is remarkable service is second to none.
Turkish Airlines
7.3
Good
3,942 reviews
SWISS
7.6
Good
1,698 reviews

Overall

7.6

Crew

8.2

Entertainment

6.8

Comfort

7.4

Boarding

7.7

Food

7.1

Reviews

1 / 20
10.0
Excellent

William,Sep 2023

ORD - ZRH

SWISS knows what they're doing their business class is remarkable service is second to none.
Lufthansa
6.8
Okay
7,317 reviews
SWISS
7.6
Good
1,698 reviews

Overall

7.6

Crew

8.2

Entertainment

6.8

Comfort

7.4

Boarding

7.7

Food

7.1

Reviews

1 / 20
10.0
Excellent

William,Sep 2023

ORD - ZRH

SWISS knows what they're doing their business class is remarkable service is second to none.

Related info for your journey

Find useful and relevant information for your journey from Slovenia to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Slovenia to Illinois (average of $245). Flying from Slovenia to Illinois in March is currently the most expensive (average of $321). 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 Slovenia to Illinois

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

Discover the top airline that operate flights from Slovenia to Illinois. 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 August 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$634Average$758FlexibilityNo cancel feeOn-time76%

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