How does KAYAK find such low prices on flights from Illinois to Vienna?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Vienna.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Vienna?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Vienna from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Vienna?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Vienna with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Vienna?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Vienna from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$274 CHEAP FLIGHTS from Illinois to Vienna

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Flight Deals

Cheap Flights from Illinois to Vienna

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Vienna

Thu, Nov 12 - Sat, Nov 21

7:15 pm - 9:35 amORD Chicago O'Hare Intl-VIE Vienna Intl

31h 20m1 stop Kastrup Copenhagen

10:15 am - 4:45 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

13h 30m1 stop Kastrup Copenhagen

$498Scandinavian Airlines

Wed, Nov 11 - Wed, Nov 25

7:15 pm - 9:35 amORD Chicago O'Hare Intl-VIE Vienna Intl

31h 20m1 stop Kastrup Copenhagen

10:15 am - 4:45 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

13h 30m1 stop Kastrup Copenhagen

$498Scandinavian Airlines

Tue, Nov 3 - Wed, Nov 11

8:00 am - 8:30 amSTL Lambert-St Louis-VIE Vienna Intl

17h 30m1 stop Washington, D.C. Dulles Intl

10:35 am - 12:10 pmVIE Vienna Intl-STL Lambert-St Louis

32h 35m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$606United Airlines

Mon, Nov 9 - Wed, Nov 25

7:30 am - 8:05 amSTL Lambert-St Louis-VIE Vienna Intl

17h 35m1 stop Chicago O'Hare Intl

10:55 am - 11:24 pmVIE Vienna Intl-STL Lambert-St Louis

19h 29m1 stop Chicago O'Hare Intl

$611United Airlines

Mon, Nov 9 - Wed, Nov 25

1:08 pm - 8:05 amSTL Lambert-St Louis-VIE Vienna Intl

11h 57m1 stop Chicago O'Hare Intl

1:20 pm - 9:40 pmVIE Vienna Intl-STL Lambert-St Louis

15h 20m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$614Multiple Airlines

Tue, Nov 3 - Wed, Nov 11

7:30 am - 8:45 amSTL Lambert-St Louis-VIE Vienna Intl

18h 15m2 stops Chicago O'Hare Intl Toronto Pearson Intl

10:35 am - 10:32 amVIE Vienna Intl-STL Lambert-St Louis

30h 57m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$615Air Canada

Mon, Oct 12 - Tue, Oct 27

8:10 pm - 9:50 pmORD Chicago O'Hare Intl-VIE Vienna Intl

18h 40m1 stop Istanbul

2:05 pm - 11:00 amVIE Vienna Intl-ORD Chicago O'Hare Intl

26h 55m1 stop Istanbul

$679Turkish Airlines

Wed, Oct 21 - Wed, Nov 4

11:25 am - 12:50 pmORD Chicago O'Hare Intl-VIE Vienna Intl

18h 25m1 stop Istanbul

2:05 pm - 11:00 amVIE Vienna Intl-ORD Chicago O'Hare Intl

27h 55m1 stop Istanbul

$679Turkish Airlines

Sat, Dec 5 - Thu, Dec 10

5:30 pm - 8:10 pmORD Chicago O'Hare Intl-VIE Vienna Intl

19h 40m1 stop Belgrade Nikola Tesla

8:50 pm - 2:45 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

24h 55m1 stop Belgrade Nikola Tesla

$684Air Serbia

Sat, Nov 21 - Thu, Nov 26

5:20 pm - 8:10 pmORD Chicago O'Hare Intl-VIE Vienna Intl

19h 50m1 stop Belgrade Nikola Tesla

3:00 pm - 2:45 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

30h 45m1 stop Belgrade Nikola Tesla

$684Air Serbia

Recent last minute flight deals from Illinois to Vienna

Tue, Sep 22 - Tue, Sep 29

8:45 am - 8:10 pmORD Chicago O'Hare Intl-VIE Vienna Intl

28h 25m3 stops Montreal Pierre Elliott Trudeau Intl Madrid Barajas Belgrade Nikola Tesla

8:45 pm - 7:48 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

30h 03m3 stops Belgrade Nikola Tesla Madrid Barajas Toronto Pearson Intl

$954Multiple Airlines

Mon, Sep 21 - Mon, Sep 28

4:50 pm - 3:40 pmORD Chicago O'Hare Intl-VIE Vienna Intl

15h 50m2 stops Amsterdam Schiphol Kastrup Copenhagen

4:10 pm - 2:15 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

29h 05m2 stops Kastrup Copenhagen Amsterdam Schiphol

$954Multiple Airlines

Tue, Sep 22 - Tue, Sep 29

7:15 pm - 7:20 pmORD Chicago O'Hare Intl-VIE Vienna Intl

17h 05m1 stop Kastrup Copenhagen

10:15 am - 4:10 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

12h 55m1 stop Kastrup Copenhagen

$989Scandinavian Airlines

Thu, Sep 24 - Tue, Oct 6

3:45 pm - 11:05 amORD Chicago O'Hare Intl-VIE Vienna Intl

12h 20m1 stop Dublin

11:45 am - 7:15 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

14h 30m1 stop Dublin

$993Aer Lingus

Tue, Sep 22 - Tue, Sep 29

7:35 am - 7:20 pmORD Chicago O'Hare Intl-VIE Vienna Intl

28h 45m2 stops Boston Logan Intl Kastrup Copenhagen

10:15 am - 4:10 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

12h 55m1 stop Kastrup Copenhagen

$1,040Scandinavian Airlines

Thu, Sep 24 - Tue, Oct 6

8:10 pm - 6:15 pmORD Chicago O'Hare Intl-VIE Vienna Intl

15h 05m1 stop Istanbul

7:50 pm - 9:40 amVIE Vienna Intl-ORD Chicago O'Hare Intl

20h 50m1 stop Istanbul

$1,057Turkish Airlines

Thu, Sep 24 - Tue, Oct 6

3:45 pm - 11:05 amORD Chicago O'Hare Intl-VIE Vienna Intl

12h 20m1 stop Dublin

11:45 am - 7:15 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

14h 30m1 stop Dublin

$1,147Aer Lingus

Sun, Sep 20 - Tue, Oct 6

8:10 pm - 8:35 amORD Chicago O'Hare Intl-VIE Vienna Intl

29h 25m2 stops Istanbul Warsaw Frederic Chopin

7:30 pm - 9:40 amVIE Vienna Intl-ORD Chicago O'Hare Intl

45h 10m2 stops Warsaw Frederic Chopin Istanbul

$1,328Turkish Airlines

Tue, Sep 22 - Tue, Sep 29

4:20 pm - 8:15 amORD Chicago O'Hare Intl-VIE Vienna Intl

8h 55mnonstop

3:00 pm - 1:15 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

29h 15m1 stop Paris Charles de Gaulle

$1,723Austrian Airlines

Mon, Sep 21 - Sun, Sep 27

4:20 pm - 8:15 amORD Chicago O'Hare Intl-VIE Vienna Intl

8h 55mnonstop

8:25 pm - 1:15 pmVIE Vienna Intl-ORD Chicago O'Hare Intl

23h 50m1 stop Paris Charles de Gaulle

$1,791Austrian Airlines