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 20h 15m and 24h 22m, respectively.

$735 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

Air Canada

21 Jan

SYD

20h 12m

1 stop

ORD

28 Jan

ORD

26h 40m

2 stops

SYD

$1,411

Air Canada

21 Jan

SYD

20h 12m

1 stop

ORD

28 Jan

ORD

25h 00m

1 stop

SYD

$1,414

Air Canada

21 Jan

SYD

37h 47m

2 stops

ORD

28 Jan

ORD

31h 55m

2 stops

SYD

$1,427

Air Canada

4 Feb

SYD

37h 47m

2 stops

ORD

8 Feb

ORD

31h 55m

2 stops

SYD

$1,433

Air Canada

21 Jan

SYD

37h 47m

3 stops

ORD

28 Jan

ORD

31h 55m

2 stops

SYD

$1,439

Air Canada

4 Feb

BNE

19h 47m

1 stop

ORD

8 Feb

ORD

47h 00m

2 stops

BNE

$1,445

Air Canada

4 Feb

SYD

20h 12m

1 stop

ORD

8 Feb

ORD

31h 37m

1 stop

SYD

$1,459

Air Canada

4 Feb

BNE

19h 47m

1 stop

ORD

8 Feb

ORD

25h 10m

1 stop

BNE

$1,471

Air Canada

4 Feb

MEL

24h 22m

2 stops

ORD

8 Feb

ORD

29h 00m

2 stops

MEL

$1,517

Air Canada

18 Jan

MEL

49h 04m

2 stops

ORD

31 May

ORD

28h 40m

2 stops

MEL

$1,529

Multiple Airlines

8 Dec

BNE

29h 23m

3 stops

ORD

15 Dec

ORD

30h 00m

2 stops

BNE

$1,545

Air Canada

31 Jan

ADL

40h 39m

2 stops

ORD

3 Feb

ORD

38h 52m

2 stops

ADL

$1,607

Flights to Moline

Search all flight deals to Moline

United Airlines

25 Dec

MEL

25h 06m

2 stops

MLI

1 Jan

MLI

24h 46m

2 stops

MEL

$2,712

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.

11:20 - 14:32SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 12m1 stop Vancouver Intl

13:55 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,411Air Canada

Thu, 21 Jan - Thu, 28 Jan

11:20 - 14:32SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 12m1 stop Vancouver Intl

15:35 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 00m1 stop Vancouver Intl

$1,414Air Canada

Thu, 21 Jan - Thu, 28 Jan

06:35 - 19:58BNE Brisbane-ORD Chicago O'Hare Intl

29h 23m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

15:30 - 13:30ORD Chicago O'Hare Intl-BNE Brisbane

30h 00m2 stops Vancouver Intl Sydney Kingsford Smith

$1,545Multiple Airlines

Tue, 8 Dec - Tue, 15 Dec

00:45 - 12:30MEL 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

$1,785Cathay Pacific

Wed, 3 Mar - Thu, 11 Mar

14:45 - 14:32PER Perth-ORD Chicago O'Hare Intl

37h 47m2 stops Sydney Kingsford Smith Vancouver Intl

20:00 - 21:40ORD Chicago O'Hare Intl-PER Perth

60h 40m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

$1,817Multiple Airlines

Mon, 1 Feb - Sun, 13 Jun

00:45 - 12:30MEL Melbourne-ORD Chicago O'Hare Intl

28h 45m1 stop Hong Kong Intl

14:10 - 23:05ORD Chicago O'Hare Intl-MEL Melbourne

39h 55m1 stop Hong Kong Intl

$1,835Cathay Pacific

Thu, 4 Mar - Fri, 12 Mar

14:05 - 20:40SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 35m2 stops Auckland Intl Los Angeles

14:33 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 02m2 stops San Francisco Auckland Intl

$1,845Air New Zealand

Wed, 20 Jan - Tue, 9 Feb

12:05 - 04:50ADL Adelaide-ORD Chicago O'Hare Intl

33h 15m2 stops Auckland Intl Los Angeles

12:55 - 10:55ORD Chicago O'Hare Intl-ADL Adelaide

29h 30m2 stops Los Angeles Auckland Intl

$1,920Air New Zealand

Wed, 27 Jan - Wed, 17 Feb

22:45 - 12:30MEL Melbourne-ORD Chicago O'Hare Intl

30h 45m1 stop Los Angeles

15:52 - 11:30ORD Chicago O'Hare Intl-MEL Melbourne

26h 38m2 stops Dallas/Fort Worth Brisbane

$2,016American Airlines

Thu, 4 Feb - Mon, 8 Feb

22:45 - 18:23MEL Melbourne-ORD Chicago O'Hare Intl

36h 38m1 stop Los Angeles

18:20 - 10:35ORD Chicago O'Hare Intl-MEL Melbourne

25h 15m2 stops Dallas/Fort Worth Sydney Kingsford Smith

$2,017American Airlines

Mon, 18 Jan - Sun, 30 May

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

10:45 - 19:59BNE Brisbane-ORD Chicago O'Hare Intl

25h 14m1 stop Vancouver Intl

08:49 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

31h 56m1 stop Vancouver Intl

$1,475Air Canada

Thu, 12 Nov - Thu, 19 Nov

10:45 - 19:59BNE Brisbane-ORD Chicago O'Hare Intl

25h 14m1 stop Vancouver Intl

14:00 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

26h 45m2 stops Los Angeles Vancouver Intl

$1,475Air Canada

Thu, 12 Nov - Thu, 19 Nov

06:35 - 14:37BNE Brisbane-ORD Chicago O'Hare Intl

24h 02m2 stops Sydney Kingsford Smith Vancouver Intl

14:00 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

26h 45m2 stops Los Angeles Vancouver Intl

$1,507Multiple Airlines

Thu, 12 Nov - Thu, 19 Nov

07:10 - 14:37MEL Melbourne-ORD Chicago O'Hare Intl

24h 27m2 stops Brisbane Vancouver Intl

15:35 - 14:35ORD Chicago O'Hare Intl-MEL Melbourne

30h 00m2 stops Vancouver Intl Sydney Kingsford Smith

$1,508Air Canada

Tue, 17 Nov - Tue, 2 Feb

14:00 - 00:21SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 21m3 stops Nadi Los Angeles Denver Intl

07:49 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

35h 46m3 stops Atlanta Hartsfield-Jackson Los Angeles Nadi

$1,665Multiple Airlines

Thu, 12 Nov - Wed, 25 Nov

22:20 - 12:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

31h 10m1 stop Hong Kong Intl

14:10 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 25m1 stop Hong Kong Intl

$1,788Cathay Pacific

Thu, 12 Nov - Wed, 25 Nov

23:40 - 14:30MEL Melbourne-ORD Chicago O'Hare Intl

31h 50m1 stop Doha Hamad Intl

18:50 - 23:20ORD Chicago O'Hare Intl-MEL Melbourne

35h 30m1 stop Doha Hamad Intl

$1,936Multiple Airlines

Tue, 17 Nov - Tue, 2 Feb

12:10 - 05:20MEL Melbourne-ORD Chicago O'Hare Intl

34h 10m2 stops Auckland Intl Los Angeles

15:00 - 08:55ORD Chicago O'Hare Intl-MEL Melbourne

24h 55m2 stops Los Angeles Auckland Intl

$2,036Air New Zealand

Sun, 15 Nov - Wed, 25 Nov

11:05 - 12:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

42h 25m1 stop Hong Kong Intl

14:10 - 13:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 50m1 stop Hong Kong Intl

$2,071Cathay Pacific

Mon, 16 Nov - Thu, 3 Dec

10:25 - 17:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 35m2 stops Brisbane Los Angeles

06:56 - 06:55ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

30h 59m2 stops Cincinnati Cinci./N. Kentucky Dallas/Fort Worth

$2,493Qantas Airways

Thu, 12 Nov - Wed, 25 Nov

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 21/1

11:20-14:32

1 stop20h 12m

Chicago O'Hare Intl

Thu 28/1

13:55-09:35

2 stops26h 40m

$1,411

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 21/1

11:20-14:32

1 stop20h 12m

Chicago O'Hare Intl

Thu 28/1

15:35-09:35

1 stop25h 00m

$1,414

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Tue 8/12

06:35-19:58

3 stops29h 23m

Chicago O'Hare Intl

Tue 15/12

15:30-13:30

2 stops30h 00m

$1,545

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 3/3

00:45-12:30

1 stop28h 45m

Chicago O'Hare Intl

Thu 11/3

14:10-12:30

1 stop29h 20m

$1,785

PerthChicago

PER Perth - ORD Chicago O'Hare Intl

PERORD

Perth

Mon 1/2

14:45-14:32

2 stops37h 47m

Chicago O'Hare Intl

Sun 13/6

20:00-21:40

3 stops60h 40m

$1,817

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Thu 4/3

00:45-12:30

1 stop28h 45m

Chicago O'Hare Intl

Fri 12/3

14:10-23:05

1 stop39h 55m

$1,835

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 20/1

14:05-20:40

2 stops23h 35m

Chicago O'Hare Intl

Tue 9/2

14:33-08:35

2 stops25h 02m

$1,845

AdelaideChicago

ADL Adelaide - ORD Chicago O'Hare Intl

ADLORD

Adelaide

Wed 27/1

12:05-04:50

2 stops33h 15m

Chicago O'Hare Intl

Wed 17/2

12:55-10:55

2 stops29h 30m

$1,920

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Thu 4/2

22:45-12:30

1 stop30h 45m

Chicago O'Hare Intl

Mon 8/2

15:52-11:30

2 stops26h 38m

$2,016

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Mon 18/1

22:45-18:23

1 stop36h 38m

Chicago O'Hare Intl

Sun 30/5

18:20-10:35

2 stops25h 15m

$2,017

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, American Airlines and United Airlines 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 36% 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	$796
Best Round-Trip Price	$1,411
Fastest flight time	28h 46m

The best one-way flight price to Illinois from Australia in the last 5 days is $796 (Melbourne to Chicago O'Hare Intl).

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The best return flight price to Illinois from Australia in the last 5 days is $1,411 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 28h 46m (Brisbane 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 $227/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $1,031/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, American Airlines and United Airlines happen to be the most popular among our users. In the past year, 36% 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 November 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.