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 21h 42m and 20h 54m, respectively.

$617 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

American Airlines

12 Nov

SYD

23h 49m

1 stop

ORD

16 Nov

ORD

22h 45m

1 stop

SYD

$1,052

American Airlines

9 Nov

SYD

23h 49m

1 stop

ORD

23 Nov

ORD

42h 57m

1 stop

SYD

$1,053

Delta

9 Nov

SYD

30h 15m

1 stop

ORD

23 Nov

ORD

24h 58m

1 stop

SYD

$1,058

Qantas Airways

16 Nov

SYD

21h 55m

1 stop

ORD

30 Nov

ORD

42h 57m

1 stop

SYD

$1,083

Multiple Airlines

26 Nov

SYD

22h 27m

1 stop

ORD

3 Dec

ORD

22h 45m

1 stop

SYD

$1,119

American Airlines

16 Nov

SYD

23h 49m

1 stop

ORD

3 Dec

ORD

22h 45m

1 stop

SYD

$1,122

American Airlines

12 Nov

SYD

21h 50m

2 stops

ORD

28 Nov

ORD

33h 20m

1 stop

SYD

$1,124

Delta

12 Nov

SYD

28h 07m

2 stops

ORD

28 Nov

ORD

29h 31m

2 stops

SYD

$1,128

Qantas Airways

26 Nov

SYD

21h 06m

1 stop

ORD

3 Dec

ORD

24h 35m

1 stop

SYD

$1,136

Qantas Airways

26 Nov

SYD

21h 06m

1 stop

ORD

3 Dec

ORD

24h 35m

1 stop

SYD

$1,162

Qantas Airways

18 Jan

MEL

37h 44m

2 stops

ORD

25 May

ORD

31h 50m

2 stops

MEL

$1,415

Qantas Airways

17 Nov

MEL

27h 05m

2 stops

ORD

2 Feb

ORD

26h 29m

2 stops

MEL

$1,417

Flights to Peoria, Illinois

Search all flight deals to Peoria, Illinois

American Airlines

17 Dec

BNE

26h 07m

2 stops

PIA

24 Dec

PIA

26h 36m

2 stops

BNE

$3,475

American Airlines

17 Dec

BNE

26h 07m

2 stops

PIA

24 Dec

PIA

27h 16m

1 stop

BNE

$3,485

Multiple Airlines

17 Dec

BNE

33h 45m

3 stops

PIA

24 Dec

PIA

26h 28m

2 stops

BNE

$3,552

American Airlines

17 Dec

BNE

29h 37m

1 stop

PIA

24 Dec

PIA

27h 16m

1 stop

BNE

$3,581

Multiple Airlines

17 Dec

BNE

30h 47m

3 stops

PIA

24 Dec

PIA

29h 48m

3 stops

BNE

$3,661

Flights to Moline

Search all flight deals to Moline

Multiple Airlines

22 Nov

MEL

43h 19m

2 stops

MLI

23 Nov

MLI

44h 57m

2 stops

MEL

$2,645

Multiple Airlines

22 Nov

MEL

43h 19m

2 stops

MLI

23 Nov

MLI

46h 22m

3 stops

MEL

$2,761

United Airlines

18 Dec

MEL

38h 15m

2 stops

MLI

25 Dec

MLI

31h 59m

2 stops

MEL

$3,368

Multiple Airlines

18 Dec

MEL

25h 13m

3 stops

MLI

25 Dec

MLI

24h 46m

2 stops

MEL

$3,544

American Airlines

22 Nov

MEL

21h 43m

1 stop

MLI

23 Nov

MLI

28h 57m

2 stops

MEL

$3,567

Multiple Airlines

18 Dec

MEL

26h 41m

3 stops

MLI

25 Dec

MLI

34h 14m

3 stops

MEL

$3,784

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 - 22:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 35m1 stop Los Angeles

18:46 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 14m1 stop Los Angeles

$1,052American Airlines

Thu, 18 Feb - Mon, 22 Feb

09:15 - 16:37SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

46h 22m2 stops Los Angeles Atlanta Hartsfield-Jackson

17:55 - 06:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

45h 55m2 stops Atlanta Hartsfield-Jackson Los Angeles

$1,058Delta

Mon, 26 Apr - Sat, 8 May

10:40 - 23:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 15m1 stop Los Angeles

07:45 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 45m1 stop Los Angeles

$1,058Delta

Mon, 16 Nov - Mon, 30 Nov

11:10 - 16:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 55m1 stop Los Angeles

21:03 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 57m1 stop Los Angeles

$1,083Qantas Airways

Mon, 16 Nov - Mon, 30 Nov

14:05 - 14:18SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

41h 13m1 stop Dallas/Fort Worth

16:59 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

23h 01m1 stop Los Angeles

$1,098Qantas Airways

Thu, 18 Feb - Mon, 22 Feb

11:15 - 16:42SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 27m1 stop Los Angeles

17:15 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 45m1 stop Los Angeles

$1,119Multiple Airlines

Thu, 26 Nov - Thu, 3 Dec

11:10 - 17:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 49m1 stop Los Angeles

17:15 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 45m1 stop Los Angeles

$1,122American Airlines

Mon, 16 Nov - Thu, 3 Dec

12:20 - 13:55BNE Brisbane-ORD Chicago O'Hare Intl

40h 35m1 stop Hong Kong Intl

16:15 - 22:30ORD Chicago O'Hare Intl-BNE Brisbane

39h 15m1 stop Hong Kong Intl

$1,738Cathay Pacific

Thu, 29 Apr - Thu, 13 May

15:30 - 12:30MEL Melbourne-ORD Chicago O'Hare Intl

38h 00m1 stop Hong Kong Intl

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

39h 55m1 stop Hong Kong Intl

$1,755Cathay Pacific

Wed, 17 Feb - Thu, 11 Mar

13:45 - 00:21MEL Melbourne-ORD Chicago O'Hare Intl

27h 36m3 stops Nadi Los Angeles Denver Intl

07:25 - 09:30ORD Chicago O'Hare Intl-MEL Melbourne

33h 05m2 stops Denver Intl Los Angeles

$1,755Multiple Airlines

Tue, 17 Nov - Tue, 8 Dec

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

11:10 - 17:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 49m1 stop Los Angeles

21:03 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 57m1 stop Los Angeles

$1,053American Airlines

Mon, 9 Nov - Mon, 23 Nov

10:40 - 21:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 07m2 stops Los Angeles Salt Lake City

11:19 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 11m2 stops Detroit Metropolitan Wayne County Los Angeles

$1,058Delta

Mon, 9 Nov - Mon, 23 Nov

10:40 - 23:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 15m1 stop Los Angeles

14:32 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 58m1 stop Los Angeles

$1,058Delta

Mon, 9 Nov - Mon, 23 Nov

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

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

12:05 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 30m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

$1,560Multiple Airlines

Mon, 9 Nov - Mon, 23 Nov

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

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

12:05 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 30m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

$1,569Multiple Airlines

Mon, 9 Nov - Mon, 23 Nov

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

$1,725Cathay Pacific

Sun, 8 Nov - Mon, 23 Nov

10:20 - 22:00MEL Melbourne-ORD Chicago O'Hare Intl

28h 40m2 stops Auckland Intl Los Angeles

10:25 - 10:55ORD Chicago O'Hare Intl-MEL Melbourne

31h 30m2 stops Los Angeles Auckland Intl

$1,925Air New Zealand

Mon, 9 Nov - Mon, 23 Nov

15:30 - 12:30MEL Melbourne-ORD Chicago O'Hare Intl

38h 00m1 stop Hong Kong Intl

14:10 - 13:20ORD Chicago O'Hare Intl-MEL Melbourne

30h 10m2 stops Hong Kong Intl Sydney Kingsford Smith

$2,092Cathay Pacific

Mon, 9 Nov - Mon, 23 Nov

11:35 - 13:44PER Perth-ORD Chicago O'Hare Intl

40h 09m2 stops Sydney Kingsford Smith San Francisco

18:45 - 20:30ORD Chicago O'Hare Intl-PER Perth

35h 45m2 stops Los Angeles Sydney Kingsford Smith

$2,837Qantas Airways

Wed, 11 Nov - Sun, 15 Nov

07:45 - 19:58MEL Melbourne-ORD Chicago O'Hare Intl

29h 13m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

12:50 - 13:35ORD Chicago O'Hare Intl-MEL Melbourne

31h 45m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

$3,790Air Canada

Mon, 9 Nov - Mon, 23 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 18/2

11:20-22:55

1 stop28h 35m

Chicago O'Hare Intl

Mon 22/2

18:46-09:00

1 stop21h 14m

$1,052

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 26/4

09:15-16:37

2 stops46h 22m

Chicago O'Hare Intl

Sat 8/5

17:55-06:50

2 stops45h 55m

$1,058

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 16/11

10:40-23:55

1 stop30h 15m

Chicago O'Hare Intl

Mon 30/11

07:45-08:30

1 stop31h 45m

$1,058

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 16/11

11:10-16:05

1 stop21h 55m

Chicago O'Hare Intl

Mon 30/11

21:03-09:00

1 stop42h 57m

$1,083

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 18/2

14:05-14:18

1 stop41h 13m

Chicago O'Hare Intl

Mon 22/2

16:59-09:00

1 stop23h 01m

$1,098

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 26/11

11:15-16:42

1 stop22h 27m

Chicago O'Hare Intl

Thu 3/12

17:15-09:00

1 stop22h 45m

$1,119

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 16/11

11:10-17:59

1 stop23h 49m

Chicago O'Hare Intl

Thu 3/12

17:15-09:00

1 stop22h 45m

$1,122

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Thu 29/4

12:20-13:55

1 stop40h 35m

Chicago O'Hare Intl

Thu 13/5

16:15-22:30

1 stop39h 15m

$1,738

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 17/2

15:30-12:30

1 stop38h 00m

Chicago O'Hare Intl

Thu 11/3

14:10-23:05

1 stop39h 55m

$1,755

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Tue 17/11

13:45-00:21

3 stops27h 36m

Chicago O'Hare Intl

Tue 8/12

07:25-09:30

2 stops33h 05m

$1,755

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 41% 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	$617
Best Round-Trip Price	$1,052
Fastest flight time	27h 36m

The best one-way flight price to Illinois from Australia in the last 5 days is $617 (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 $1,052 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 27h 36m (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 $234/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $1,054/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, 41% 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.