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$697+ Cheap flights from Klagenfurt (KLU) to Illinois

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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — ORD
Sep 10 — Sep 171
Wed 9/10
Wed 9/17
1 adult, Economy
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Cheap flight deals from Klagenfurt to Illinois

Keep the following information in mind while searching for Klagenfurt to Illinois flight deals. Data was last updated September 5, 2025.

Round-trip from

$697
(Austrian Airlines)
From Klagenfurt to Illinois
Search Deals

Find flight deals from Klagenfurt to Illinois

Cheapest flights from Klagenfurt to Illinois
Explore the most affordable flight options available from Klagenfurt to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2025.

This Austrian Airlines deal was found by Cheapflights users on 9/3. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/185:45 amKLU - ORD
1 stop14h 35mAustrian Airlines
Sat 10/2512:55 pmORD - KLU
2 stops19h 00mAustrian Airlines
Deal found 9/3$697
This Flightnetwork deal was found by Cheapflights users on 9/3. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/183:00 pmKLU - ORD
2 stops30h 55mMultiple Airlines
Sat 10/2510:40 amORD - KLU
2 stops21h 15mMultiple Airlines
Deal found 9/3$739
This Gotogate deal was found by Cheapflights users on 9/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:45 amKLU - ORD
2 stops18h 48mMultiple Airlines
Tue 9/2310:30 pmORD - KLU
2 stops17h 55mMultiple Airlines
Deal found 9/3$826
This Kissandfly.com deal was found by Cheapflights users on 9/3. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/193:00 pmKLU - ORD
2 stops23h 38mAustrian Airlines
Tue 9/234:20 pmORD - KLU
1 stop24h 05mAustrian Airlines
Deal found 9/3$838

Cheapflights Fare Finder

 
Customize your flight search to find flights from Klagenfurt 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 September 5, 2025.
Use the filters below to find and compare flights from Klagenfurt to Illinois that are best for you.

Fly from

Klagenfurt

Fly to

Illinois

Route

Depart

Return

Price

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Sat 10/18

5:45 am-1:20 pm

1 stop14h 35m

Chicago O'Hare Intl

Sat 10/25

4:20 pm-2:55 pm

1 stop15h 35m

$697

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Sat 10/18

3:00 pm-2:55 pm

2 stops30h 55m

Chicago O'Hare Intl

Sat 10/25

10:40 am-2:55 pm

2 stops21h 15m

$739

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Fri 9/19

5:45 am-5:33 pm

2 stops18h 48m

Chicago O'Hare Intl

Tue 9/23

10:30 pm-11:25 pm

2 stops17h 55m

$826

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Fri 9/19

3:00 pm-7:38 am

2 stops23h 38m

Chicago O'Hare Intl

Tue 9/23

4:20 pm-11:25 pm

1 stop24h 05m

$838

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Best time to book a flight from Klagenfurt to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Klagenfurt 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 Klagenfurt to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • What airport do you fly from for flights from Klagenfurt to Illinois?

    Located just 2.0 mi from the city center, Klagenfurt (KLU) is the airport most travelers will use when flying to Illinois from Klagenfurt.

  • How long is the flight from Klagenfurt to Illinois?

    A quick flight from Klagenfurt to Illinois can take about 14h 35m. Austrian Airlines provides one of the quickest options available for as low as $697. Klagenfurt and Illinois are separated by a distance of 4679 mi.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Klagenfurt to Illinois (average of $245). Flying from Klagenfurt 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.

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