Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Chicago to Klagenfurt from $1,138

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Klagenfurt departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Chicago to Klagenfurt

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:50 am - 2:00 pm
ORD
-
KLU
21h 10m
2 stops
Multiple Airlines Logo
3:00 pm - 12:55 pm
KLU
-
ORD
28h 55m
2 stops
$1,138Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Multiple Airlines Logo
4:20 pm - 6:00 pm
ORD
-
KLU
18h 40m
1 stop
Multiple Airlines Logo
3:00 pm - 7:55 pm
KLU
-
ORD
35h 55m
2 stops
$1,156Multiple Airlines
Sun, Aug 2 - Sat, Aug 22
Lufthansa Logo
3:35 pm - 6:00 pm
ORD
-
KLU
19h 25m
2 stops
Lufthansa Logo
3:00 pm - 12:55 pm
KLU
-
ORD
28h 55m
2 stops
$1,158Lufthansa
Sun, Aug 2 - Sat, Aug 22
Austrian Airlines Logo
4:20 pm - 6:00 pm
ORD
-
KLU
18h 40m
1 stop
Austrian Airlines Logo
3:00 pm - 1:20 pm
KLU
-
ORD
29h 20m
1 stop
$1,224Austrian Airlines
Sun, Aug 2 - Sat, Aug 22
Multiple Airlines Logo
2:15 pm - 5:20 pm
ORD
-
KLU
20h 05m
3 stops
Multiple Airlines Logo
3:15 pm - 7:15 pm
KLU
-
ORD
35h 00m
2 stops
$1,309Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Multiple Airlines Logo
9:50 am - 5:20 pm
ORD
-
KLU
24h 30m
3 stops
Multiple Airlines Logo
3:00 pm - 7:15 pm
KLU
-
ORD
35h 15m
3 stops
$1,360Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Multiple Airlines Logo
7:25 pm - 2:00 pm
ORD
-
KLU
35h 35m
3 stops
Multiple Airlines Logo
3:00 pm - 7:15 pm
KLU
-
ORD
35h 15m
3 stops
$1,362Multiple Airlines
Sun, Aug 2 - Sat, Aug 22
Multiple Airlines Logo
4:20 pm - 2:00 pm
ORD
-
KLU
14h 40m
1 stop
Multiple Airlines Logo
3:00 pm - 11:00 am
KLU
-
ORD
27h 00m
2 stops
$1,377Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Multiple Airlines Logo
8:40 am - 3:10 pm
ORD
-
KLU
23h 30m
2 stops
Multiple Airlines Logo
3:00 pm - 7:15 pm
KLU
-
ORD
35h 15m
3 stops
$1,614Multiple Airlines
Sun, Aug 2 - Sat, Aug 22

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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, momondo users made 832,500 searches. Data last updated June 25, 2026.
Use the filters below to find and compare flights from Chicago to Klagenfurt that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Tue 8/4

9:50 am-2:00 pm

2 stops21h 10m

Klagenfurt

Tue 8/11

3:00 pm-12:55 pm

2 stops28h 55m

$1,138

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Sun 8/2

4:20 pm-6:00 pm

1 stop18h 40m

Klagenfurt

Sat 8/22

3:00 pm-7:55 pm

2 stops35h 55m

$1,156

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Sun 8/2

3:35 pm-6:00 pm

2 stops19h 25m

Klagenfurt

Sat 8/22

3:00 pm-12:55 pm

2 stops28h 55m

$1,158

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Sun 8/2

4:20 pm-6:00 pm

1 stop18h 40m

Klagenfurt

Sat 8/22

3:00 pm-1:20 pm

1 stop29h 20m

$1,224

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Tue 8/4

2:15 pm-5:20 pm

3 stops20h 05m

Klagenfurt

Tue 8/11

3:15 pm-7:15 pm

2 stops35h 00m

$1,309

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Tue 8/4

9:50 am-5:20 pm

3 stops24h 30m

Klagenfurt

Tue 8/11

3:00 pm-7:15 pm

3 stops35h 15m

$1,360

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Sun 8/2

7:25 pm-2:00 pm

3 stops35h 35m

Klagenfurt

Sat 8/22

3:00 pm-7:15 pm

3 stops35h 15m

$1,362
Quickest round-trip

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Tue 8/4

4:20 pm-2:00 pm

1 stop14h 40m

Klagenfurt

Tue 8/11

3:00 pm-11:00 am

2 stops27h 00m

$1,377

ChicagoKlagenfurt

ORD - KLU

ORDKLU

Chicago O'Hare Intl

Sun 8/2

8:40 am-3:10 pm

2 stops23h 30m

Klagenfurt

Sat 8/22

3:00 pm-7:15 pm

3 stops35h 15m

$1,614

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Chicago to Klagenfurt

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

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

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

Fastest flight time

21h 10m

Direct flights

None
The fastest flight from Chicago to Klagenfurt takes 21h 10m
There are no direct flights from Chicago to Klagenfurt. There are no popular flight routes from Chicago to Klagenfurt.
Search flight deals

Frequently asked questions about flying from Chicago to Klagenfurt

  • How far is Chicago to Klagenfurt by plane?

    Chicago and Klagenfurt are 4674.3 mi apart from one another. In terms of flight time, this usually takes a little over 21h 10m.

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

    Prices for flights from Chicago to Klagenfurt Airport are refreshed on a daily basis.

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

    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 Chicago to Klagenfurt Airport.

  • What documentation or ID do you need to fly to Klagenfurt Airport?

    The travel and health documents you'll need for your trip to Klagenfurt Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Klagenfurt Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Chicago to Klagenfurt

  • How do I get Price Alerts for flights from Chicago to Klagenfurt?

    Price Alerts will notify you by email when the price for flights to Klagenfurt from Chicago decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Chicago to Klagenfurt with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Klagenfurt?

Book flights to Klagenfurt if you plan to visit one of these locations
Bad Kleinkirchheim

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Klagenfurt. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Chicago to Klagenfurt flights to just show those with flexible booking policies.

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

Once all potential Chicago to Klagenfurt flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Klagenfurt, momondo offers a useful price alert feature which will track prices for flights to Klagenfurt from Chicago and alert you when they change.

An easier way to manage your Klagenfurt trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 7/25
Sat 8/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Austria