How long is the flight from Australia to Illinois?

If you’re flying from a popular airport in Australia, such as Sydney Kingsford Smith or Melbourne, and flying into Illinois, then you can expect flight times to average 28h 06m and 23h 25m, respectively.

$183 Cheap Flights to Illinois in 2026/27

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Recent flights found to popular cities in Illinois

Find flights to these popular cities in Illinois from your nearest airport.

Flights to Chicago

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Air Canada

5 Oct

SYD

25h 46m

1 stop

ORD

19 Oct

ORD

24h 40m

1 stop

SYD

$1,305

Air Canada

5 Oct

SYD

20h 23m

1 stop

ORD

19 Oct

ORD

29h 15m

2 stops

SYD

$1,307

Air Canada

12 Oct

BNE

36h 51m

2 stops

ORD

19 Oct

ORD

31h 16m

1 stop

BNE

$1,309

Air Canada

5 Oct

SYD

25h 52m

2 stops

ORD

19 Oct

ORD

29h 15m

2 stops

SYD

$1,310

Air Canada

12 Oct

BNE

36h 51m

2 stops

ORD

19 Oct

ORD

29h 00m

2 stops

BNE

$1,312

Air Canada

13 Oct

BNE

36h 51m

2 stops

ORD

20 Oct

ORD

31h 16m

1 stop

BNE

$1,319

Air Canada

13 Oct

BNE

36h 51m

2 stops

ORD

20 Oct

ORD

29h 00m

2 stops

BNE

$1,322

Air Canada

1 Oct

SYD

22h 25m

1 stop

ORD

26 Oct

ORD

31h 46m

1 stop

SYD

$1,326

Air Canada

1 Oct

SYD

20h 23m

1 stop

ORD

26 Oct

ORD

26h 40m

2 stops

SYD

$1,329

Air Canada

1 Oct

SYD

25h 52m

2 stops

ORD

26 Oct

ORD

26h 40m

2 stops

SYD

$1,331

Air Canada

12 Oct

BNE

19h 43m

1 stop

ORD

19 Oct

ORD

24h 25m

1 stop

BNE

$1,336

Air Canada

28 Oct

BNE

25h 16m

1 stop

ORD

4 Nov

ORD

32h 05m

2 stops

BNE

$1,344

Flights to Moline

Search all flight deals to Moline

United Airlines

11 Nov

BNE

22h 23m

2 stops

MLI

15 Nov

MLI

48h 59m

2 stops

BNE

$2,438

Qantas Airways

10 Dec

BNE

31h 22m

3 stops

MLI

6 Jan

MLI

35h 46m

3 stops

BNE

$2,890

Multiple Airlines

10 Dec

BNE

22h 48m

2 stops

MLI

6 Jan

MLI

32h 07m

3 stops

BNE

$2,896

United Airlines

10 Dec

BNE

27h 39m

2 stops

MLI

6 Jan

MLI

28h 55m

2 stops

BNE

$2,977

Qantas Airways

10 Dec

BNE

30h 27m

2 stops

MLI

6 Jan

MLI

35h 46m

3 stops

BNE

$3,005

Qatar Airways

11 Nov

BNE

42h 12m

2 stops

MLI

15 Nov

MLI

38h 10m

2 stops

BNE

$3,035

Qatar Airways

11 Nov

BNE

42h 12m

2 stops

MLI

15 Nov

MLI

38h 10m

2 stops

BNE

$3,038

Qatar Airways

11 Nov

BNE

42h 12m

2 stops

MLI

15 Nov

MLI

38h 10m

2 stops

BNE

$3,041

American Airlines

10 Dec

BNE

29h 37m

1 stop

MLI

6 Jan

MLI

26h 17m

2 stops

BNE

$3,174

Qantas Airways

10 Dec

BNE

23h 03m

1 stop

MLI

6 Jan

MLI

21h 27m

1 stop

BNE

$3,421

American Airlines

10 Dec

BNE

29h 37m

1 stop

MLI

6 Jan

MLI

21h 27m

1 stop

BNE

$3,439

Multiple Airlines

11 Dec

BNE

24h 57m

2 stops

MLI

8 Jan

MLI

26h 17m

3 stops

BNE

$6,984

Find the cheapest flights from Australia to Illinois

Return

One-way

Last minute

Recent return flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

10:20 - 20:01SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 41m1 stop Vancouver Intl

10:37 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 58m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,302Air Canada

Wed, 28 Oct - Tue, 24 Nov

10:20 - 19:52SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 32m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

10:37 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 58m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,305Air Canada

Wed, 28 Oct - Tue, 24 Nov

14:15 - 05:16SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

31h 01m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

06:30 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

38h 05m3 stops Denver Intl Los Angeles Nadi

$1,388Multiple Airlines

Thu, 22 Oct - Mon, 26 Oct

18:55 - 14:32BNE Brisbane-ORD Chicago O'Hare Intl

35h 37m2 stops Sydney Kingsford Smith Vancouver Intl

15:35 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

25h 10m1 stop Vancouver Intl

$1,466Multiple Airlines

Sun, 7 Feb - Sun, 14 Feb

22:45 - 16:28MEL Melbourne-STL Lambert-St Louis

34h 43m2 stops Los Angeles Dallas/Fort Worth

09:00 - 05:00STL Lambert-St Louis-MEL Melbourne

27h 00m1 stop Dallas/Fort Worth

$1,493American Airlines

Fri, 5 Feb - Tue, 9 Feb

12:15 - 12:30BNE Brisbane-ORD Chicago O'Hare Intl

40h 15m1 stop Hong Kong Intl

14:10 - 23:20ORD Chicago O'Hare Intl-BNE Brisbane

41h 10m1 stop Hong Kong Intl

$1,577Cathay Pacific

Mon, 22 Feb - Mon, 8 Mar

10:10 - 23:46SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 36m1 stop Los Angeles

19:10 - 11:45STL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 35m2 stops Dallas/Fort Worth Brisbane

$1,591American Airlines

Wed, 21 Oct - Sat, 24 Oct

11:20 - 23:33SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 13m1 stop Los Angeles

19:01 - 06:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

42h 54m1 stop Dallas/Fort Worth

$1,668Qantas Airways

Wed, 20 Jan - Sat, 13 Feb

20:45 - 20:19SYD Sydney Kingsford Smith-STL Lambert-St Louis

40h 34m2 stops Brisbane Dallas/Fort Worth

06:00 - 06:25STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 25m1 stop Los Angeles

$1,729Qantas Airways

Sun, 15 Nov - Sun, 29 Nov

00:45 - 13:30MEL Melbourne-ORD Chicago O'Hare Intl

28h 45m1 stop Hong Kong Intl

14:10 - 12:30ORD Chicago O'Hare Intl-MEL Melbourne

29h 20m1 stop Hong Kong Intl

$1,889Cathay Pacific

Wed, 28 Oct - Thu, 5 Nov

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

09:45 - 00:23MEL Melbourne-ORD Chicago O'Hare Intl

29h 38m2 stops Los Angeles Denver Intl

06:20 - 06:45ORD Chicago O'Hare Intl-MEL Melbourne

33h 25m2 stops Atlanta Hartsfield-Jackson Los Angeles

$2,135Multiple Airlines

Sat, 19 Sep - Sat, 26 Sep

09:20 - 16:45SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 25m1 stop Vancouver Intl

08:45 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 35m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$2,399Air Canada

Thu, 17 Sep - Wed, 14 Oct

09:20 - 17:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 45m2 stops Vancouver Intl Calgary

08:45 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 35m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$2,399Air Canada

Thu, 17 Sep - Wed, 14 Oct

07:25 - 13:55MEL Melbourne-ORD Chicago O'Hare Intl

45h 30m1 stop Hong Kong Intl

16:15 - 11:15ORD Chicago O'Hare Intl-MEL Melbourne

28h 00m1 stop Hong Kong Intl

$2,465Cathay Pacific

Sat, 19 Sep - Sat, 26 Sep

07:25 - 13:55MEL Melbourne-ORD Chicago O'Hare Intl

45h 30m1 stop Hong Kong Intl

16:15 - 05:55ORD Chicago O'Hare Intl-MEL Melbourne

46h 40m1 stop Hong Kong Intl

$2,491Cathay Pacific

Mon, 21 Sep - Sun, 27 Sep

19:00 - 13:55MEL Melbourne-ORD Chicago O'Hare Intl

33h 55m2 stops Perth Hong Kong Intl

16:15 - 23:15ORD Chicago O'Hare Intl-MEL Melbourne

39h 00m1 stop Hong Kong Intl

$2,566Multiple Airlines

Tue, 22 Sep - Sun, 4 Oct

17:50 - 15:53SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 03m1 stop Los Angeles

18:02 - 06:55ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

20h 53m1 stop Dallas/Fort Worth

$18,471Qantas Airways

Sat, 19 Sep - Tue, 6 Oct

17:50 - 05:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 09m1 stop Los Angeles

21:10 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 55m1 stop Los Angeles

$18,549American Airlines

Sat, 19 Sep - Sun, 4 Oct

17:50 - 00:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 40m1 stop Los Angeles

17:53 - 07:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 37m1 stop Los Angeles

$18,549American Airlines

Sat, 19 Sep - Mon, 5 Oct

10:20 - 05:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

34h 39m1 stop San Francisco

21:40 - 06:55ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 15m1 stop San Francisco

$18,553United Airlines

Thu, 17 Sep - Fri, 2 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 28/10

10:20-20:01

1 stop25h 41m

Chicago O'Hare Intl

Tue 24/11

10:37-09:35

2 stops29h 58m

$1,302

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 28/10

10:20-19:52

2 stops25h 32m

Chicago O'Hare Intl

Tue 24/11

10:37-09:35

2 stops29h 58m

$1,305

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 22/10

14:15-05:16

3 stops31h 01m

Chicago O'Hare Intl

Mon 26/10

06:30-12:35

3 stops38h 05m

$1,388

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Sun 7/2

18:55-14:32

2 stops35h 37m

Chicago O'Hare Intl

Sun 14/2

15:35-08:45

1 stop25h 10m

$1,466

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Fri 5/2

22:45-16:28

2 stops34h 43m

Lambert-St Louis

Tue 9/2

09:00-05:00

1 stop27h 00m

$1,493

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Mon 22/2

12:15-12:30

1 stop40h 15m

Chicago O'Hare Intl

Mon 8/3

14:10-23:20

1 stop41h 10m

$1,577

Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-23:46

1 stop29h 36m

Lambert-St Louis

Sat 24/10

19:10-11:45

2 stops24h 35m

$1,591

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 20/1

11:20-23:33

1 stop29h 13m

Lambert-St Louis

Sat 13/2

19:01-06:55

1 stop42h 54m

$1,668

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sun 15/11

20:45-20:19

2 stops40h 34m

Lambert-St Louis

Sun 29/11

06:00-06:25

1 stop31h 25m

$1,729

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 28/10

00:45-13:30

1 stop28h 45m

Chicago O'Hare Intl

Thu 5/11

14:10-12:30

1 stop29h 20m

$1,889

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Illinois flights insights and trends

Explore insights for your Illinois flight to craft the best travel plan

Airlines

Other information

Which airlines fly to Illinois?

Qantas Airways, United Airlines and Air New Zealand are the top three most popular airlines that fly to Illinois from Australia according to our data. Qantas Airways is the first choice among our users, with 37% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 8 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

Cheapest flights to cities in Illinois

Click on the cities below to find out when it's cheapest to fly to Illinois from Australia

Chicago

Find flights to Chicago

Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$183
Best Round-Trip Price	$1,305
Fastest flight time	22h 20m

The best one-way flight price to Illinois from Australia in the last 5 days is $183 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The best return flight price to Illinois from Australia in the last 5 days is $1,305 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 22h 20m (Melbourne to Lambert-St Louis).

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Frequently asked questions about flying to Illinois

What is the cheapest flight I can find to Illinois?

For prices as low as $152/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $692/pp.

What is the best airport to fly into to visit Chicago?

Chicago is about 99% more popular to visit than any other city in Illinois, according to momondo users. When visiting Chicago, it is recommended to fly into Chicago O'Hare Intl Airport, where you can typically get the cheapest prices and the most convenient travel options into the city.

I plan on visiting River North. Which airport is the quickest drive?

The closest airport to River North is Chicago O'Hare Intl Airport, and would make for the quickest drive. For those interested in a secondary airport to fly into, consider looking at flights heading to Chicago Midway Airport.

What are the most popular landmarks in Illinois?

When visiting Illinois, the majority of people tend to find River North, Millennium Park and Chicago Water Tower to be the most notable landmarks in the area.

What is the weather like in Illinois?

The temperatures in Illinois range from -5 °C to 23 °C depending on the time of year. The warmest month in Illinois is July, and the coldest month in Illinois is January. Those looking for a drier month during their visit should travel during the months of January, February, or December, when rain is least likely compared to the rest of the year.

Which airlines fly to Illinois?

There are 8 airlines that fly to Illinois on a routine basis, but Qantas Airways, United Airlines and Air New Zealand happen to be the most popular among our users. In the past year, 37% of those who searched for flights to Illinois looked to travel with Qantas Airways, making this airline the top choice among momondo travellers.

When did momondo last update prices for flights to Illinois?

Prices for flights to Illinois refresh daily.

How many operators does momondo search for flights to Illinois?

The number of operators available for flights to Illinois is 8 as of September 2026.

How old do you have to be to fly to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Illinois.

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

The travel and health documents required for your trip to Illinois 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 licence, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

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

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

Yes. momondo enables you to select and highlight flights to Illinois with this policy.

How can momondo help me find flights to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as filter your options to help you make an informed choice when booking flights to Illinois.

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

Yes. momondo can track flight prices for Illinois and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.