In terms of precipitation, rainfall in Klagenfurt ranges from 1.6 - 4.3 inches per month. June is typically the wettest month, when rainfall can reach 4.3 in. January is typically the driest time to visit Klagenfurt when rainfall is around 1.6 in.

If weather is an important factor for your trip to Klagenfurt, 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 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Klagenfurt as you normally would.

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.

$1,113+ Flights from Illinois to Klagenfurt

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Cheap flight deals from Illinois to Klagenfurt

Best flights from Illinois to Klagenfurt
Discover carefully curated flight deals from Illinois to Klagenfurt that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.

Sun 4/198:40 amORD - KLU

2 stops22h 20mMultiple Airlines

Mon 4/273:00 pmKLU - ORD

2 stops35h 50mMultiple Airlines

Deal found 12/15

$1,113

Sun 4/194:20 pmORD - KLU

1 stop14h 40mAustrian Airlines

Mon 4/273:00 pmKLU - ORD

1 stop29h 20mAustrian Airlines

Deal found 12/15

$1,189

Mon 4/272:00 pmORD - KLU

3 stops17h 00mMultiple Airlines

Mon 5/43:00 pmKLU - ORD

1 stop29h 20mMultiple Airlines

Deal found 12/15

$1,159

Mon 4/274:20 pmORD - KLU

1 stop24h 05mAustrian Airlines

Mon 5/43:00 pmKLU - ORD

1 stop29h 20mAustrian Airlines

Deal found 12/15

$1,189

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Klagenfurt that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Sun 4/19

8:40 am-2:00 pm

2 stops22h 20m

Klagenfurt

Mon 4/27

3:00 pm-7:50 pm

2 stops35h 50m

$1,113

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Mon 4/27

2:00 pm-2:00 pm

3 stops17h 00m

Klagenfurt

Mon 5/4

3:00 pm-1:20 pm

1 stop29h 20m

$1,159

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Sun 4/19

4:20 pm-2:00 pm

1 stop14h 40m

Klagenfurt

Mon 4/27

3:00 pm-1:20 pm

1 stop29h 20m

$1,189

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Mon 4/27

4:20 pm-11:25 pm

1 stop24h 05m

Klagenfurt

Mon 5/4

3:00 pm-1:20 pm

1 stop29h 20m

$1,189

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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

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Related info for your journey

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.

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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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Klagenfurt with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Illinois to Klagenfurt

Best flights from Illinois to Klagenfurt
Discover carefully curated flight deals from Illinois to Klagenfurt that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.

Discover carefully curated flight deals from Illinois to Klagenfurt that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Klagenfurt that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Klagenfurt

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?

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

How can I find direct flights from Illinois to Klagenfurt?

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

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.

Complete your trip

Complete your trip to Klagenfurt by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Illinois to Klagenfurt by cabin class

Find flights from Illinois to Klagenfurt, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Illinois and Klagenfurt flights

Browse other Illinois and Klagenfurt flight options. Last updated on December 16, 2025.

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Illinois to Klagenfurt flights

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$1,113+ 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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Klagenfurt with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Illinois to Klagenfurt

Best flights from Illinois to KlagenfurtDiscover carefully curated flight deals from Illinois to Klagenfurt that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.

Discover carefully curated flight deals from Illinois to Klagenfurt that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Klagenfurt that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Klagenfurt

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?

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

How can I find direct flights from Illinois to Klagenfurt?

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

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.

100% Free

Book with Flexibility

Travel Smart

Best flights from Illinois to Klagenfurt
Discover carefully curated flight deals from Illinois to Klagenfurt that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.