HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Klagenfurt

$1,142+ Cheap flights from Illinois to Klagenfurt (KLU)

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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — KLU
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Klagenfurt 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 Illinois to Klagenfurt

Cheapest flights from Illinois to Klagenfurt
Explore the most affordable flight options available from Illinois to Klagenfurt. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Gotogate deal was found by Cheapflights users on 2/2. 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 3/197:15 am
ORD
-
KLU
2 stops24h 35m
Multiple Airlines
Thu 3/2611:10 am
KLU
-
ORD
1 stop33h 50m
Multiple Airlines
Deal found 2/2$1,142
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:35 pm
ORD
-
KLU
2 stops15h 25m
Lufthansa
Fri 9/115:45 am
KLU
-
ORD
2 stops14h 10m
Lufthansa
Deal found 2/2$1,205
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:20 pm
ORD
-
KLU
1 stop14h 40m
Austrian Airlines
Fri 9/115:45 am
KLU
-
ORD
1 stop14h 35m
Austrian Airlines
Deal found 2/2$1,214
This Orbitz deal was found by Cheapflights users on 2/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/119:50 am
ORD
-
KLU
2 stops21h 10m
Multiple Airlines
Mon 9/213:00 pm
KLU
-
ORD
1 stop29h 20m
Multiple Airlines
Deal found 2/2$1,228
This Air Canada deal was found by Cheapflights users on 2/2. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:15 pm
ORD
-
KLU
3 stops16h 45m
Air Canada
Mon 9/215:45 am
KLU
-
ORD
2 stops21h 27m
Air Canada
Deal found 2/2$1,238
This Air Canada deal was found by Cheapflights users on 2/2. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:15 pm
ORD
-
KLU
3 stops16h 45m
Air Canada
Fri 9/115:45 am
KLU
-
ORD
2 stops18h 13m
Air Canada
Deal found 2/2$1,258
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:20 pm
ORD
-
KLU
1 stop14h 40m
Austrian Airlines
Mon 9/215:45 am
KLU
-
ORD
1 stop14h 35m
Austrian Airlines
Deal found 2/2$1,270

Find flight deals from Illinois to Klagenfurt

Keep the following information in mind while searching for Illinois to Klagenfurt flight deals. Data was last updated February 3, 2026.

Round-trip from

$1,142
(Gotogate)
From Illinois to Klagenfurt
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Klagenfurt 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 February 3, 2026.
Use the filters below to find and compare flights from Illinois to Klagenfurt that are best for you.

Fly from

Illinois

Fly to

Klagenfurt

Route

Depart

Return

Price

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Thu 3/19

7:15 am-1:50 pm

2 stops24h 35m

Klagenfurt

Thu 3/26

11:10 am-3:00 pm

1 stop33h 50m

$1,142

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Thu 6/11

7:45 pm-2:00 pm

3 stops35h 15m

Klagenfurt

Fri 6/19

10:10 pm-9:15 pm

3 stops30h 05m

$1,623

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Thu 6/11

3:35 pm-2:00 pm

2 stops15h 25m

Klagenfurt

Fri 6/19

5:45 am-12:55 pm

2 stops14h 10m

$1,827

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Thu 6/11

4:20 pm-2:00 pm

1 stop14h 40m

Klagenfurt

Fri 6/19

5:45 am-1:20 pm

1 stop14h 35m

$1,851

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Best time to book a flight from Illinois to Klagenfurt

Have a flexible travel schedule? Discover the best time to fly to Klagenfurt 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 Klagenfurt
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 Illinois to Klagenfurt. 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 into for flights to Klagenfurt from Illinois?

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Klagenfurt 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

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 Illinois to Klagenfurt

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Vienna flights
Newark to Vienna flights
Dulles Intl to Vienna flights
O'Hare Intl to Vienna flights
LaGuardia to Vienna flights
Boston to Vienna flights
Los Angeles to Vienna flights
Reagan-National to Vienna flights
Baltimore to Vienna flights
Seattle to Vienna flights
San Francisco to Vienna flights
Dallas/Fort Worth to Vienna flights
Miami to Vienna flights
Minneapolis to Vienna flights
Atlanta to Vienna flights
Midway to Vienna flights
Detroit to Vienna flights
Portland to Vienna flights
San Jose to Vienna flights
Ontario to Vienna flights
Love Field to Vienna flights
Santa Ana to Vienna flights
Denver to Vienna flights
Fort Lauderdale to Vienna flights
Hobby to Vienna flights
Philadelphia to Vienna flights
Tampa to Vienna flights
John F Kennedy Intl to Innsbruck flights
Nashville to Vienna flights
Newark to Innsbruck flights
John F Kennedy Intl to Salzburg flights
Austin to Vienna flights
Cleveland to Vienna flights
Charlotte to Vienna flights
Orlando to Vienna flights
Reagan-National to Salzburg flights
George Bush Intcntl to Vienna flights
New Orleans to Vienna flights
Dallas/Fort Worth to Salzburg flights
Honolulu to Vienna flights
LaGuardia to Innsbruck flights
Sky Harbor Intl to Vienna flights
Raleigh to Vienna flights
Newark to Salzburg flights
Dulles Intl to Salzburg flights
San Diego to Vienna flights
Seattle to Salzburg flights
Newark to Graz flights
John F Kennedy Intl to Graz 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.
Site
©2026 Cheapflights