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Cheap flights from Illinois to Vienna from $832

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Vienna departing on 12/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Logo
7:20 pm - 11:20 pmORD-GRZ
21h 00m2 stops
Logo
3:05 pm - 4:45 pmGRZ-ORD
32h 40m2 stops
$832
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Thu, Dec 4 - Thu, Jan 15
Logo
10:00 am - 12:55 pmORD-GRZ
19h 55m2 stops
Logo
6:05 am - 1:10 pmGRZ-ORD
14h 05m1 stop
$881
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Thu, Dec 4 - Thu, Jan 15
Logo
6:50 pm - 2:20 pmORD-GRZ
12h 30m1 stop
Logo
6:05 am - 1:10 pmGRZ-ORD
14h 05m1 stop
$938
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Thu, Dec 4 - Thu, Jan 15
Air Canada Logo
2:00 pm - 1:45 pmORD-GRZ
16h 45m2 stops
Air Canada Logo
6:00 am - 7:30 pmGRZ-ORD
20h 30m2 stops
$1,031Air Canada
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Fri, Dec 5 - Tue, Dec 9
Lufthansa Logo
9:50 pm - 3:40 pmORD-GRZ
10h 50m1 stop
Lufthansa Logo
6:05 am - 1:10 pmGRZ-ORD
14h 05m1 stop
$1,101Lufthansa
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Fri, Dec 5 - Tue, Dec 9
United Airlines Logo
3:20 pm - 1:35 pmORD-GRZ
15h 15m1 stop
United Airlines Logo
6:05 am - 2:55 pmGRZ-ORD
15h 50m2 stops
$1,105United Airlines
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Fri, Dec 5 - Tue, Dec 9
Logo
11:25 am - 11:20 pmORD-GRZ
28h 55m3 stops
Logo
6:10 am - 7:40 pmGRZ-ORD
20h 30m2 stops
$1,109
Find Deal
Mon, Oct 13 - Mon, Oct 20
United Airlines Logo
6:25 pm - 1:35 pmORD-GRZ
12h 10m1 stop
United Airlines Logo
6:05 am - 4:52 pmGRZ-ORD
17h 47m2 stops
$1,111United Airlines
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Fri, Dec 5 - Tue, Dec 9
Air Canada Logo
9:55 am - 12:35 pmORD-GRZ
19h 40m2 stops
Air Canada Logo
6:00 am - 8:22 pmGRZ-ORD
21h 22m2 stops
$1,229Air Canada
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Mon, Oct 13 - Mon, Oct 20
Lufthansa Logo
3:35 pm - 12:35 pmORD-GRZ
14h 00m1 stop
Lufthansa Logo
10:35 am - 7:55 pmGRZ-ORD
16h 20m1 stop
$1,449Lufthansa
Find Deal
Mon, Sep 22 - Sun, Oct 5

Lufthansa flights from Illinois to Graz

Our best Lufthansa deals on Illinois to Graz flight tickets
Lufthansa
Dec 5
ORD9:50 pmChicago O'Hare Intl
10h 50m
1 stop
GRZ3:40 pmGraz Thalerhof
Dec 9
GRZ6:05 amGraz Thalerhof
14h 05m
1 stop
ORD1:10 pmChicago O'Hare Intl
$1,101
Find similar
Lufthansa
Sep 22
ORD3:35 pmChicago O'Hare Intl
14h 00m
1 stop
GRZ12:35 pmGraz Thalerhof
Oct 5
GRZ10:35 amGraz Thalerhof
16h 20m
1 stop
ORD7:55 pmChicago O'Hare Intl
$1,449
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United Airlines flights from Illinois to Graz

Our best United Airlines deals on Illinois to Graz flight tickets
United Airlines
Dec 5
ORD3:20 pmChicago O'Hare Intl
15h 15m
1 stop
GRZ1:35 pmGraz Thalerhof
Dec 9
GRZ6:05 amGraz Thalerhof
15h 50m
2 stops
ORD2:55 pmChicago O'Hare Intl
$1,105
Find similar
United Airlines
Dec 5
ORD6:25 pmChicago O'Hare Intl
12h 10m
1 stop
GRZ1:35 pmGraz Thalerhof
Dec 9
GRZ6:05 amGraz Thalerhof
17h 47m
2 stops
ORD4:52 pmChicago O'Hare Intl
$1,111
Find similar
United Airlines
Dec 5
ORD4:50 pmChicago O'Hare Intl
13h 45m
2 stops
GRZ1:35 pmGraz Thalerhof
Dec 9
GRZ6:05 amGraz Thalerhof
16h 15m
1 stop
ORD3:20 pmChicago O'Hare Intl
$1,112
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Graz 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 August 25, 2025.
Use the filters below to find and compare flights from Illinois to Graz that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Thu 12/4

7:20 pm-11:20 pm

2 stops21h 00m

Graz Thalerhof

Thu 1/15

3:05 pm-4:45 pm

2 stops32h 40m

$832

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Thu 12/4

10:00 am-12:55 pm

2 stops19h 55m

Graz Thalerhof

Thu 1/15

6:05 am-1:10 pm

1 stop14h 05m

$881

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Thu 12/4

6:50 pm-2:20 pm

1 stop12h 30m

Graz Thalerhof

Thu 1/15

6:05 am-1:10 pm

1 stop14h 05m

$938

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Fri 12/5

2:00 pm-1:45 pm

2 stops16h 45m

Graz Thalerhof

Tue 12/9

6:00 am-7:30 pm

2 stops20h 30m

$1,031

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Fri 12/5

9:50 pm-3:40 pm

1 stop10h 50m

Graz Thalerhof

Tue 12/9

6:05 am-1:10 pm

1 stop14h 05m

$1,101

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Fri 12/5

3:20 pm-1:35 pm

1 stop15h 15m

Graz Thalerhof

Tue 12/9

6:05 am-2:55 pm

2 stops15h 50m

$1,105

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Mon 10/13

11:25 am-11:20 pm

3 stops28h 55m

Graz Thalerhof

Mon 10/20

6:10 am-7:40 pm

2 stops20h 30m

$1,109

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Fri 12/5

6:25 pm-1:35 pm

1 stop12h 10m

Graz Thalerhof

Tue 12/9

6:05 am-4:52 pm

2 stops17h 47m

$1,111

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Mon 10/13

9:55 am-12:35 pm

2 stops19h 40m

Graz Thalerhof

Mon 10/20

6:00 am-8:22 pm

2 stops21h 22m

$1,229

ChicagoGraz

ORD - GRZ

ORDGRZ

Chicago O'Hare Intl

Mon 9/22

3:35 pm-12:35 pm

1 stop14h 00m

Graz Thalerhof

Sun 10/5

10:35 am-7:55 pm

1 stop16h 20m

$1,449

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Vienna from

How to get the cheapest flight ticket from Illinois to Graz

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 day to depart on your flight to Graz?

The cheapest day to depart from Illinois to Graz is on a Saturday when prices can be found for as low as $1,141. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,484. These prices are subject to change though, so be sure to set up a Price Alert for flights to Graz.

Cheap Illinois to Graz flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Graz

Direct flights

None
There are no direct flights from Illinois to Graz. There are no popular flight routes from Illinois to Graz.
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  • When did momondo last update prices for flights from Illinois to Graz Thalerhof Airport?

    Prices for flights from Illinois to Graz Thalerhof Airport are updated daily.

  • How old do you have to be to fly from Illinois to Graz Thalerhof Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Graz Thalerhof Airport.

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

    The required travel and health documents for your Graz Thalerhof Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Graz Thalerhof Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Graz?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Graz from Illinois.

Can I find flights from Illinois to Graz with flexible booking policies on momondo?

Yes. All flights to Graz from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Graz?

Once all potential Illinois to Graz 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 Illinois to Graz right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Graz from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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