HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$752+ 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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — ORD
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Klagenfurt to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 18, 2025.

Round-trip from

$752
(Gotogate)
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 June 18, 2025.

This Gotogate deal was found by Cheapflights users on 6/17. 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.
Thu 7/35:45 amKLU - ORD
2 stops35h 07mAir Canada
Mon 7/78:25 pmORD - KLU
2 stops34h 35mAir Canada
Deal found 6/17$752
This Austrian Airlines deal was found by Cheapflights users on 6/17. 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.
Thu 7/33:00 pmKLU - ORD
1 stop29h 20mAustrian Airlines
Mon 7/73:55 pmORD - KLU
2 stops24h 30mAustrian Airlines
Deal found 6/17$793
This Flysmarter deal was found by Cheapflights users on 6/18. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/55:45 amKLU - ORD
1 stop14h 35mMultiple Airlines
Fri 7/116:25 pmORD - KLU
2 stops12h 35mMultiple Airlines
Deal found 6/18$813
This Flysmarter deal was found by Cheapflights users on 6/18. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/55:45 amKLU - ORD
2 stops15h 15mLufthansa
Fri 7/116:25 pmORD - KLU
2 stops12h 35mLufthansa
Deal found 6/18$887

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 June 18, 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

Thu 7/3

5:45 am-9:52 am

2 stops35h 07m

Chicago O'Hare Intl

Mon 7/7

8:25 pm-2:00 pm

2 stops34h 35m

$752

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Thu 7/3

3:00 pm-1:20 pm

1 stop29h 20m

Chicago O'Hare Intl

Mon 7/7

3:55 pm-11:25 pm

2 stops24h 30m

$793

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Sat 7/5

5:45 am-1:20 pm

1 stop14h 35m

Chicago O'Hare Intl

Fri 7/11

6:25 pm-2:00 pm

2 stops12h 35m

$813

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Sat 7/5

5:45 am-2:00 pm

2 stops15h 15m

Chicago O'Hare Intl

Fri 7/11

6:25 pm-2:00 pm

2 stops12h 35m

$887

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 June 18, 2025.
Austrian Airlines
7.6
Good
804 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
804 reviews
Austrian Airlines
7.6
Good
804 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Air Canada
7.1
Good
9,572 reviews
Austrian Airlines
7.6
Good
804 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Lufthansa
6.8
Okay
7,158 reviews
Austrian Airlines
7.6
Good
804 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

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.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Klagenfurt to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Vienna to Newark flights
Vienna to John F Kennedy Intl flights
Vienna to LaGuardia flights
Vienna to Los Angeles flights
Vienna to Miami flights
Vienna to Dulles Intl flights
Vienna to O'Hare Intl flights
Vienna to Boston flights
Vienna to Baltimore flights
Vienna to Reagan-National flights
Vienna to Las Vegas flights
Vienna to San Francisco flights
Vienna to Fort Lauderdale flights
Vienna to Honolulu flights
Vienna to Seattle flights
Vienna to Orlando flights
Vienna to Atlanta flights
Vienna to Albuquerque flights
Vienna to Hobby flights
Vienna to Tampa flights
Graz to Newark flights
Graz to John F Kennedy Intl flights
Vienna to Denver flights
Vienna to Sky Harbor Intl flights
Vienna to Dallas/Fort Worth flights
Vienna to George Bush Intcntl flights
Vienna to Portland flights
Vienna to West Palm Beach flights
Salzburg to John F Kennedy Intl flights
Vienna to Kailua-Kona flights
Vienna to Detroit flights
Vienna to Salt Lake City flights
Vienna to Stewart flights
Salzburg to Newark flights
Vienna to Charlotte flights
Vienna to Philadelphia flights
Vienna to Austin flights
Vienna to Love Field flights
Vienna to Nashville flights
Vienna to San Diego flights
Vienna to Cincinnati flights
Vienna to Kahului flights
Graz to Miami flights
Vienna to Santa Ana flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.