When did momondo last update prices for flights from Klagenfurt Airport to Chicago?

Prices for flights from Klagenfurt Airport to Chicago refresh daily.

How old do you have to be to fly from Klagenfurt Airport to Chicago?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Klagenfurt Airport to Chicago.

What documentation or ID do you need to fly to Chicago?

The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$665 Cheap Flights from Klagenfurt to Chicago in 2025/26

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Find the cheapest flights from Klagenfurt to Chicago

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:50 pm - 12:10 pmKLU-ORD

27h 20m2 stops

7:00 pm - 11:25 pmORD-KLU

22h 25m2 stops

$665Lufthansa

Find Deal

Thu, Mar 12 - Sun, Mar 15

2:50 pm - 4:20 pmKLU-ORD

31h 30m2 stops

10:50 pm - 11:25 pmORD-KLU

18h 35m2 stops

$667Lufthansa

Find Deal

Thu, Mar 12 - Sun, Mar 15

2:50 pm - 3:00 pmKLU-ORD

30h 10m1 stop

5:55 pm - 11:25 pmORD-KLU

23h 30m2 stops

$670Austrian Airlines

Find Deal

Thu, Mar 12 - Sun, Mar 15

5:45 am - 4:20 pmKLU-ORD

16h 35m2 stops

10:50 pm - 1:55 pmORD-KLU

33h 05m2 stops

$791Lufthansa

Find Deal

Thu, Mar 12 - Sun, Mar 15

Lufthansa flights from Klagenfurt to Chicago

Our best Lufthansa deals on Klagenfurt to Chicago flight tickets

Lufthansa

Mar 12

KLU2:50 pmKlagenfurt

27h 20m

2 stops

ORD12:10 pmChicago O'Hare Intl

Mar 15

ORD7:00 pmChicago O'Hare Intl

22h 25m

2 stops

KLU11:25 pmKlagenfurt

$665

Find similar

Lufthansa

Mar 12

KLU2:50 pmKlagenfurt

31h 30m

2 stops

ORD4:20 pmChicago O'Hare Intl

Mar 15

ORD10:50 pmChicago O'Hare Intl

18h 35m

2 stops

KLU11:25 pmKlagenfurt

$667

Find similar

Lufthansa

Mar 12

KLU5:45 amKlagenfurt

16h 35m

2 stops

ORD4:20 pmChicago O'Hare Intl

Mar 15

ORD10:50 pmChicago O'Hare Intl

33h 05m

2 stops

KLU1:55 pmKlagenfurt

$791

Find similar

Austrian Airlines flights from Klagenfurt to Chicago

Our best Austrian Airlines deals on Klagenfurt to Chicago flight tickets

Austrian Airlines

Mar 12

KLU2:50 pmKlagenfurt

30h 10m

1 stop

ORD3:00 pmChicago O'Hare Intl

Mar 15

ORD5:55 pmChicago O'Hare Intl

23h 30m

2 stops

KLU11:25 pmKlagenfurt

$670

Find similar

Austrian Airlines

Oct 19

KLU3:00 pmKlagenfurt

28h 05m

2 stops

ORD12:05 pmChicago O'Hare Intl

Oct 25

ORD4:20 pmChicago O'Hare Intl

25h 05m

1 stop

KLU12:25 amKlagenfurt

$5,828

Find similar

Fly from

Fly to

Route

Depart

Return

Price

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Thu 3/12

2:50 pm-12:10 pm

2 stops27h 20m

Chicago O'Hare Intl

Sun 3/15

7:00 pm-11:25 pm

2 stops22h 25m

$665

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Thu 3/12

2:50 pm-4:20 pm

2 stops31h 30m

Chicago O'Hare Intl

Sun 3/15

10:50 pm-11:25 pm

2 stops18h 35m

$667

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Thu 3/12

2:50 pm-3:00 pm

1 stop30h 10m

Chicago O'Hare Intl

Sun 3/15

5:55 pm-11:25 pm

2 stops23h 30m

$670

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Thu 3/12

5:45 am-4:20 pm

2 stops16h 35m

Chicago O'Hare Intl

Sun 3/15

10:50 pm-1:55 pm

2 stops33h 05m

$791

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Thu 10/30

5:45 am-9:00 pm

3 stops45h 15m

$1,531

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Wed 10/29

5:45 am-6:45 pm

3 stops43h 00m

$1,555

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Thu 10/30

5:45 am-5:45 pm

2 stops42h 00m

$1,707

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Wed 10/29

5:45 am-9:00 pm

2 stops21h 15m

$1,864

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Wed 10/29

5:45 am-3:00 pm

1 stop15h 15m

$2,737

KlagenfurtChicago

KLU - ORD

KLUORD

Klagenfurt

Thu 10/30

2:50 pm-3:00 pm

1 stop30h 10m

$2,739

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Klagenfurt to Chicago

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Klagenfurt to Chicago?

Austrian Airlines is the most popular carrier operating from Klagenfurt to Chicago

When to book flights from Klagenfurt to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from Klagenfurt to Chicago according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Klagenfurt to Chicago (KLU to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Klagenfurt to Chicago

Direct flights	None

There are no direct flights from Klagenfurt to Chicago. There are no popular flight routes from Klagenfurt to Chicago.

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How far is Klagenfurt to Chicago by plane?
The straight-line distance from Klagenfurt to Chicago is 4674.3 mi. In terms of flight time, this usually takes a little over 16h 35m.
When did momondo last update prices for flights from Klagenfurt Airport to Chicago?
Prices for flights from Klagenfurt Airport to Chicago refresh daily.
How old do you have to be to fly from Klagenfurt Airport to Chicago?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Klagenfurt Airport to Chicago.
What documentation or ID do you need to fly to Chicago?
The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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Why use momondo?

Why should I use momondo to find a flight deal from Klagenfurt to Chicago?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Klagenfurt to Chicago. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Klagenfurt to Chicago with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Chicago from Klagenfurt with this policy.

How can momondo help me find flights from Klagenfurt to Chicago?

Once you have performed a search for Klagenfurt to Chicago flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Klagenfurt to Chicago right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Klagenfurt to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.