$511 Find Cheap Flights from Slovenia to Illinois

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Illinois, as well as popular online travel agencies
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KAYAK's insights & trends for flights to Illinois

Get data-powered insights and trends for flights to Illinois to help you find the cheapest flights, the best time to fly and much more.

How long is the flight to Illinois?

An average nonstop flight from Slovenia to Illinois takes 14h 07m, covering a distance of 4704 miles. The shortest route is Ljubljana (LJU) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 12h 05m.

What is the most popular destination in Illinois?

Based on KAYAK flight searches, the most popular destination is Chicago (100% of total searches to Illinois).


Good to know

Low seasonSeptember
High seasonJune
Cheapest flight$511
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from Ljubljana to Chicago

FAQs for booking flights from Slovenia to Illinois

  • How does KAYAK find such low prices on flights from Slovenia to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Slovenia to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Slovenia to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Slovenia to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Slovenia to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Slovenia to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Slovenia to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Slovenia to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Illinois?

    Based on KAYAK data, the cheapest day to fly to Illinois is Saturday where round-trip tickets can be as cheap as $660. On the other hand, the most expensive day to fly is Thursday, where round-trip prices are $1,402 on average.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $693 on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $841.

Reviews of the top 3 airlines serving from Slovenia to Illinois

 
See real verified KAYAK customer reviews for airlines flying to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Slovenia to Illinois. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Slovenia to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
SWISSOverall score based on 1632 reviews
8.2Crew
6.7Entertainment
7.4Comfort
7.0Food
7.6Boarding
Airline reviews

The crew was very friendly and nice! Very smooth flight.

10.0 ExcellentAnonymous, Jun 2025ZRH - JFK
Read more SWISS reviews

The crew was very friendly and nice! Very smooth flight.

The whole experience was positive. Crew very friendly and helpful. Very greedy with pre-seat allocation. Web site too complicated

The meal was wonderful and strawberry ice cream was a plus.

Absolutely amazing! Best airline i have flown with, huge difference to United!

All the flight to USA were arranged to E terminal whereas from Dubrovnik arriving on Zurich is on A80, have to walk all the way from A to E, even need transfer bus , for short transfer time like in an hour, we have to work fast, as soon as arrived at E, it is about time to boarding, pretty tight schedule, I hope Zurich airport can make some rearrangement so that transfer people do not have to walk long way. For short transfer time people, such as 50 min, this is even impossible if still like this.

...as stated previously, red tape should be shorted by Swiss in terms of generating refunds...

When I needed to get my bag off of the plane so that I could take a train because the connection was 4 hours later, they took 2 hours to take my bag off making me take the train and miss my flight simultaneously. The seat size on the plane is too small for an average aged woman let alone a middle-aged man. It's unacceptable and I will not fly Boeing again.

The staff were nice people, the food was very cheap, one of the meal was a sandwich or nothing, I couldn't buy any food, mind expensive duty free WAS available right away. 🤒

PLEASE DONT TAKE FORCEFULLY(SIZE APPROPRIATE) CARRY ONS FROM PASSENGERS WHO FOR SOME REASON NEED TO KEEP IT

I slept the whole flight so I can't tell you about the food and there was no entertainment offered. Crew was very nice, seats were comfortable in business, and boarding was easy.

The check in process at Istanbul airport caused my family a great deal of stress and disappointment due to the following factors: 1) WE HAD TO PAY US$330 for check on bags, despite holding Economy tickets that Turkish airlines website clearly states that flights from Istanbul to Miami had a 2 checked bags allowance. 2) Airport staff not only lacked empathy for senior travelers (75 yrs old and 71 yrs old), but were also rude as well. The supervisor at check it offered "if you don't pay for the bags, you can just remain and sleep at the airport for however long you wish. What a terrible way to treat customers !!! 3) We were bumped from agent to agent to agent FIVE times, showing everyone the communication we received telling us we had the 2 bags entitlement. Two elderly people lugging 4 suitcase around and around the Turkish terminal. Again, what a sad way to treat customers !!! 4) We need a case opened to get a refund for the amount we paid. Something is amiss, screams unethical, and sounds unscrupulous......At First , we were told we must pay for 4 bags. All of a sudden, it became 2 bags, and finally all 4 bags were checked on with payments demanded for 2. Why did it vary from agent to agent???? 5) OVERALL, A TERRIBLE AND SUSPICIOUSLLY UNSCRUPULOUS EXPERIENCE FLYING WITH TURKISH AIRLINES. WE ARE TERRIBLY DISAPPOINTED AND SAD THAT OUR VISIT TO A BEAUTIFUL CITY ENDED IN SUCH A HORRIBLE EXPERIENCE

I recently flew with Turkish Airlines, and I can confidently say it was one of the best travel experiences I’ve ever had. From the moment I boarded, the crew was incredibly attentive, warm, and professional. They went above and beyond to ensure everyone was comfortable and well taken care of throughout the flight. The highlight, however, was the food! I’ve flown with many airlines, but Turkish Airlines sets the bar incredibly high when it comes to in-flight dining. Every meal was fresh, flavorful, and beautifully presented. The variety of dishes, even on a long-haul flight, was impressive. It felt like dining at a high-end restaurant at 35,000 feet! The seats were comfortable, the entertainment options were great, and the overall atmosphere made the journey enjoyable. Turkish Airlines truly excels in combining luxury and hospitality. I wouldn’t hesitate to fly with them again—highly recommend!

One of the best flights I have been on in a while.

Here's a sample answer: "Honestly, I was really impressed with Turkish Airlines, but if I had to suggest one area for improvement, it would be: - *More efficient boarding process*: I noticed that boarding took a bit longer than expected, which might be frustrating for passengers with tight connections.

Not worth pay business class and get service economy class

In this long haul flight, flight attendants never stopped moving and giving excellent service. Very impressive. Very comfortable seats and excellent food

In sharp contrast to the modern glitzy airport, boarding facilities were primitive. Passengers had to board buses and walk up steep stairs in bitter cold with carry-on baggages. I found no reason why aerobridge was not provided.

Service and food were decent, seats are a bit too narrow. Leg room is normal. Bathroom should be cleaned more frequently. WiFi is cumbersome and should be simplified.

they have cancell the flight with no reasons, My parents were in the cold weather in the airport for 24 hours they did not give any hotel and food. I hate Turkish Airline, this is our last time that we ha ve chosen Turkish Airline.

Same as before boarding process and lack of crew experience in the process

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

The crew was the best I’ve ever encountered. Business class was spacious, immaculate, and very modern.

I wish seats were not reclinable. It's so claustrophobic when the person in front of you spends most of a nine hour flight leaned all the way back. The crew was really nice though and the dinner (red Thai curry) was pretty compelling.

Our flights were severely delayed, then canceled and we had to fly out next day with no sleep accommodation help. This led to our baggage being lost and the service reps after baggage couldn’t be bothered to help. They kept sending us to different counters when we were at the right counter to begin with. The only saving grace was the angel woman supervisor with blond hair who helped us put in a missing baggage claim.

The boarding system was all bogus - employees at the boarding gate were not sound like proffesional or may be possibly rational

I got an email in the morning of the flight 1/7, from Kayak, that I was rebooked from UA 906 to LH 430. Nobody at Lufthansa ot United knew about this. I went to both counters. at the airport. Also, Cheap Flights, who I booked the ticket through, did not know. I ended up staying on the United flight. But this was very disturbing, since I got a very late notice that I was rebooked to an earlier flight, I hurried to the airport to find out after a lot of inquiring that this was a mistake. Not a good Kayak experience.

After living in Europe for five years and flying with Lufthansa and KLM airlines, I’ve realized that United Airlines is now a budget carrier. The flight attendant are not friendly. The seats are not comfortable. And everything comes at a cost. I will be flying with KLM and Skyteam like Delta to the US going forward no doubt. United Airlines is not what it once was:

Delayed take off but I think they waited for passengers.

I had to fly United where the flight crew was atrocious

Flight was delayed for no reason and I missed my connection. This added another day of travel and I missed an event I was traveling home for.

Book cheap flights from Slovenia to Illinois

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Illinois found on KAYAK in the last 72 hours.
9/16Tue
1 stopLufthansa
20h 35mLJU-ORD
9/28Sun
1 stopLufthansa
14h 45mORD-LJU
$692
9/16Tue
1 stopLufthansa
13h 35mLJU-ORD
10/2Thu
1 stopLufthansa
10h 35mORD-LJU
$694
9/17Wed
1 stopSWISS
24h 30mLJU-ORD
9/30Tue
1 stopSWISS
16h 30mORD-LJU
$699
9/17Wed
1 stop
32h 35mLJU-ORD
10/1Wed
1 stop
11h 25mORD-LJU
$706
9/17Wed
2 stopsDelta
16h 27mLJU-ORD
10/1Wed
1 stopDelta
11h 25mORD-LJU
$710
9/17Wed
2 stopsDelta
18h 18mLJU-ORD
10/1Wed
2 stopsDelta
17h 55mORD-LJU
$713
9/17Wed
1 stopSWISS
24h 30mLJU-ORD
9/29Mon
2 stopsSWISS
19h 35mORD-LJU
$721
9/20Sat
2 stops
18h 01mLJU-ORD
9/28Sun
2 stops
16h 12mORD-LJU
$760
6/30Mon
1 stopTurkish Airlines
28h 45mLJU-ORD
7/5Sat
1 stopTurkish Airlines
16h 25mORD-LJU
$1,177
6/29Sun
1 stopTurkish Airlines
28h 45mLJU-ORD
7/6Sun
1 stopTurkish Airlines
29h 40mORD-LJU
$1,210

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Illinois found on KAYAK in the last 72 hours.
9/28Sun
1 stopLOT
33h 35mLJU-ORD
$511
9/28Sun
1 stopLOT
33h 35mLJU-ORD
$515
9/28Sun
2 stopsLOT
29h 05mLJU-ORD
$521
9/28Sun
2 stopsLOT
29h 05mLJU-ORD
$532
7/12Sat
1 stopTurkish Airlines
20h 30mLJU-ORD
$538
7/12Sat
1 stopLOT
32h 50mLJU-ORD
$544
7/12Sat
1 stopTurkish Airlines
20h 30mLJU-ORD
$559
7/12Sat
2 stopsLOT
56h 50mLJU-ORD
$575
7/12Sat
2 stopsLOT
56h 50mLJU-ORD
$619
7/12Sat
2 stopsLOT
56h 50mLJU-ORD
$707

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Last minute flights to Illinois

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Illinois that are departing in the next 10 days.
6/23Mon
multi-stopLufthansa
23h 30mLJU-ORD
8/12Tue
multi-stopLufthansa
14h 05mORD-LJU
$830
6/23Mon
multi-stopLufthansa
23h 30mLJU-ORD
8/14Thu
multi-stopLufthansa
10h 35mORD-LJU
$832
6/21Sat
multi-stopSWISS
23h 50mLJU-ORD
8/11Mon
multi-stopSWISS
21h 15mORD-LJU
$844
6/21Sat
multi-stopSWISS
23h 50mLJU-ORD
8/16Sat
multi-stopSWISS
43h 30mORD-LJU
$866
6/21Sat
multi-stopSWISS
25h 15mLJU-ORD
8/14Thu
multi-stopSWISS
12h 45mORD-LJU
$912
6/21Sat
multi-stopDelta
27h 19mLJU-ORD
8/17Sun
multi-stopDelta
34h 36mORD-LJU
$941
6/23Mon
multi-stopBrussels Airlines
23h 50mLJU-ORD
8/13Wed
multi-stopBrussels Airlines
16h 50mORD-LJU
$947
6/21Sat
multi-stopLOT
56h 45mLJU-ORD
8/12Tue
multi-stopLOT
36h 25mORD-LJU
$963
6/22Sun
multi-stopLOT
33h 35mLJU-ORD
8/15Fri
multi-stopLOT
31h 55mORD-LJU
$987
6/23Mon
multi-stopDelta
18h 23mLJU-ORD
8/13Wed
multi-stopDelta
15h 10mORD-LJU
$1,075

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Everything you need to know for your flight to Illinois

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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