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 25h 50m and 26h 31m, respectively.

$985 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

Search all flight deals to Chicago

Multiple Airlines

9 Nov

SYD

32h 13m

3 stops

ORD

16 Nov

ORD

37h 05m

3 stops

SYD

$1,376

Multiple Airlines

16 Oct

SYD

31h 01m

3 stops

ORD

31 Oct

ORD

38h 05m

3 stops

SYD

$1,564

Multiple Airlines

22 Oct

SYD

31h 01m

3 stops

ORD

31 Oct

ORD

38h 05m

3 stops

SYD

$1,570

Cathay Pacific

9 Nov

BNE

40h 15m

1 stop

ORD

16 Nov

ORD

41h 10m

1 stop

BNE

$1,596

Cathay Pacific

5 Nov

BNE

40h 15m

1 stop

ORD

9 Nov

ORD

28h 35m

1 stop

BNE

$1,671

Cathay Pacific

5 Nov

BNE

40h 15m

1 stop

ORD

9 Nov

ORD

28h 35m

1 stop

BNE

$1,674

Cathay Pacific

5 Nov

BNE

40h 15m

1 stop

ORD

9 Nov

ORD

28h 35m

1 stop

BNE

$1,677

Cathay Pacific

5 Nov

BNE

40h 15m

1 stop

ORD

9 Nov

ORD

28h 35m

1 stop

BNE

$1,678

Multiple Airlines

11 Nov

MEL

29h 51m

2 stops

ORD

18 Nov

ORD

34h 00m

2 stops

MEL

$1,697

Cathay Pacific

8 Nov

BNE

40h 15m

1 stop

ORD

15 Nov

ORD

28h 35m

1 stop

BNE

$1,705

Air New Zealand

10 Nov

SYD

32h 29m

2 stops

ORD

17 Nov

ORD

31h 01m

2 stops

SYD

$1,710

Multiple Airlines

11 Nov

MEL

29h 51m

2 stops

ORD

18 Nov

ORD

35h 00m

3 stops

MEL

$1,728

Flights to Moline

Search all flight deals to Moline

Delta

10 Nov

MEL

41h 09m

2 stops

MLI

17 Nov

MLI

33h 00m

2 stops

MEL

$1,509

American Airlines

10 Nov

MEL

28h 48m

1 stop

MLI

17 Nov

MLI

27h 07m

2 stops

MEL

$2,400

Multiple Airlines

10 Nov

MEL

42h 18m

3 stops

MLI

17 Nov

MLI

42h 45m

2 stops

MEL

$2,531

Multiple Airlines

10 Nov

MEL

42h 18m

3 stops

MLI

17 Nov

MLI

36h 40m

3 stops

MEL

$2,641

American Airlines

10 Nov

MEL

21h 43m

1 stop

MLI

17 Nov

MLI

24h 27m

1 stop

MEL

$5,095

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.

14:00 - 05:13SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 13m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

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

37h 05m3 stops Denver Intl Los Angeles Nadi

$1,376Multiple Airlines

Mon, 9 Nov - Mon, 16 Nov

10:10 - 10:19MEL Melbourne-MLI Moline Quad-City

41h 09m2 stops Los Angeles Atlanta Hartsfield-Jackson

06:00 - 08:00MLI Moline Quad-City-MEL Melbourne

33h 00m2 stops Atlanta Hartsfield-Jackson Los Angeles

$1,509Delta

Tue, 10 Nov - Tue, 17 Nov

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

$1,596Cathay Pacific

Mon, 9 Nov - Mon, 16 Nov

00:50 - 12:30BNE Brisbane-ORD Chicago O'Hare Intl

27h 40m1 stop Hong Kong Intl

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

41h 10m1 stop Hong Kong Intl

$1,596Cathay Pacific

Mon, 9 Nov - Tue, 17 Nov

07:30 - 22:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 29m2 stops Auckland Intl Los Angeles

10:34 - 10:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 01m2 stops Houston George Bush Intcntl Auckland Intl

$1,710Air New Zealand

Tue, 10 Nov - Tue, 17 Nov

12:10 - 22:59MEL Melbourne-ORD Chicago O'Hare Intl

27h 49m2 stops Auckland Intl Los Angeles

14:22 - 13:45ORD Chicago O'Hare Intl-MEL Melbourne

30h 23m2 stops Houston George Bush Intcntl Auckland Intl

$1,735Air New Zealand

Tue, 10 Nov - Tue, 17 Nov

09:45 - 05:00MEL Melbourne-ORD Chicago O'Hare Intl

35h 15m1 stop Los Angeles

11:31 - 05:00ORD Chicago O'Hare Intl-MEL Melbourne

25h 29m2 stops Fayetteville Northwest Arkansas Dallas/Fort Worth

$1,922American Airlines

Wed, 21 Oct - Sun, 25 Oct

10:10 - 16:51SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 41m1 stop Los Angeles

18:55 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 05m1 stop Los Angeles

$1,925Qantas Airways

Thu, 15 Oct - Fri, 30 Oct

10:10 - 18:38SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

24h 28m1 stop Los Angeles

18:45 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 15m1 stop Los Angeles

$1,926Qantas Airways

Sat, 17 Oct - Sun, 1 Nov

22:55 - 07:35PER Perth-ORD Chicago O'Hare Intl

45h 40m2 stops Sydney Kingsford Smith Dallas/Fort Worth

06:00 - 11:10ORD Chicago O'Hare Intl-PER Perth

40h 10m2 stops Los Angeles Brisbane

$1,957American Airlines

Thu, 22 Oct - Sun, 25 Oct

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

09:10 - 23:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

29h 20m1 stop Los Angeles

13:50 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 15m1 stop Los Angeles

$1,865Qantas Airways

Thu, 1 Oct - Wed, 14 Oct

20:50 - 15:40SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

33h 50m1 stop Abu Dhabi Zayed Intl

11:25 - 20:10ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

40h 45m2 stops Istanbul Kuala Lumpur Intl

$2,189Multiple Airlines

Thu, 1 Oct - Wed, 14 Oct

07:40 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

45h 15m1 stop Hong Kong Intl

16:15 - 17:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 15m2 stops Hong Kong Intl Melbourne

$2,297Multiple Airlines

Thu, 1 Oct - Sat, 17 Oct

10:10 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

42h 45m1 stop Hong Kong Intl

16:15 - 07:10ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

46h 55m1 stop Hong Kong Intl

$2,417Cathay Pacific

Thu, 1 Oct - Fri, 9 Oct

07:40 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

45h 15m1 stop Hong Kong Intl

16:15 - 07:10ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

46h 55m1 stop Hong Kong Intl

$2,427Cathay Pacific

Thu, 1 Oct - Fri, 9 Oct

20:50 - 15:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

34h 05m1 stop Abu Dhabi Zayed Intl

07:20 - 18:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 30m2 stops San Diego Honolulu

$2,505Multiple Airlines

Thu, 1 Oct - Thu, 15 Oct

16:45 - 18:25MEL Melbourne-ORD Chicago O'Hare Intl

40h 40m2 stops Sydney Kingsford Smith Dallas/Fort Worth

19:03 - 05:45ORD Chicago O'Hare Intl-MEL Melbourne

43h 42m1 stop Los Angeles

$2,643Qantas Airways

Tue, 29 Sep - Thu, 1 Oct

09:10 - 00:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 20m1 stop Los Angeles

06:00 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 05m1 stop Los Angeles

$2,971American Airlines

Thu, 1 Oct - Fri, 9 Oct

10:55 - 20:22MEL Melbourne-ORD Chicago O'Hare Intl

24h 27m1 stop San Francisco

16:40 - 08:15ORD Chicago O'Hare Intl-MEL Melbourne

24h 35m1 stop San Francisco

$2,978United Airlines

Tue, 29 Sep - Thu, 1 Oct

06:00 - 19:48MEL Melbourne-ORD Chicago O'Hare Intl

28h 48m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

07:09 - 11:05ORD Chicago O'Hare Intl-MEL Melbourne

36h 56m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

$5,566Air Canada

Tue, 29 Sep - Thu, 1 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 9/11

14:00-05:13

3 stops32h 13m

Chicago O'Hare Intl

Mon 16/11

06:30-12:35

3 stops37h 05m

$1,376

MelbourneMoline

MEL Melbourne - MLI Moline Quad-City

MELMLI

Melbourne

Tue 10/11

10:10-10:19

2 stops41h 09m

Moline Quad-City

Tue 17/11

06:00-08:00

2 stops33h 00m

$1,509

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Mon 9/11

12:15-12:30

1 stop40h 15m

Chicago O'Hare Intl

Mon 16/11

14:10-23:20

1 stop41h 10m

$1,596

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Mon 9/11

00:50-12:30

1 stop27h 40m

Chicago O'Hare Intl

Tue 17/11

14:10-23:20

1 stop41h 10m

$1,596

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 10/11

07:30-22:59

2 stops32h 29m

Chicago O'Hare Intl

Tue 17/11

10:34-10:35

2 stops31h 01m

$1,710

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Tue 10/11

12:10-22:59

2 stops27h 49m

Chicago O'Hare Intl

Tue 17/11

14:22-13:45

2 stops30h 23m

$1,735

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 21/10

09:45-05:00

1 stop35h 15m

Chicago O'Hare Intl

Sun 25/10

11:31-05:00

2 stops25h 29m

$1,922

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 15/10

10:10-16:51

1 stop22h 41m

Chicago O'Hare Intl

Fri 30/10

18:55-09:00

1 stop22h 05m

$1,925

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sat 17/10

10:10-18:38

1 stop24h 28m

Chicago O'Hare Intl

Sun 1/11

18:45-09:00

1 stop21h 15m

$1,926

PerthChicago

PER Perth - ORD Chicago O'Hare Intl

PERORD

Perth

Thu 22/10

22:55-07:35

2 stops45h 40m

Chicago O'Hare Intl

Sun 25/10

06:00-11:10

2 stops40h 10m

$1,957

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 38% 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

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Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$985
Best Round-Trip Price	$1,376
Fastest flight time	31h 50m

The best one-way flight price to Illinois from Australia in the last 5 days is $985 (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 $1,376 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 31h 50m (Melbourne to Chicago O'Hare Intl).

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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 $154/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, 38% 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.