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 13m and 24h 35m, respectively.

$614 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

17 Nov

SYD

21h 55m

1 stop

ORD

2 Dec

ORD

26h 30m

1 stop

SYD

$1,043

American Airlines

12 Nov

SYD

35h 55m

1 stop

ORD

16 Nov

ORD

42h 56m

1 stop

SYD

$1,044

American Airlines

26 Apr

SYD

22h 45m

1 stop

ORD

10 May

ORD

31h 50m

1 stop

SYD

$1,046

American Airlines

29 Jan

SYD

36h 09m

1 stop

ORD

7 Feb

ORD

31h 45m

1 stop

SYD

$1,112

American Airlines

26 Apr

SYD

25h 57m

2 stops

ORD

14 May

ORD

21h 06m

1 stop

SYD

$1,115

Delta

29 Jan

SYD

24h 29m

2 stops

ORD

7 Feb

ORD

26h 20m

2 stops

SYD

$1,120

Delta

18 Nov

SYD

24h 25m

2 stops

ORD

3 Dec

ORD

24h 49m

2 stops

SYD

$1,121

Philippine Airlines

2 Feb

SYD

46h 25m

1 stop

ORD

5 Mar

ORD

42h 05m

1 stop

SYD

$1,426

Philippine Airlines

9 Nov

PER

22h 20m

1 stop

ORD

23 Nov

ORD

42h 35m

1 stop

PER

$1,482

Multiple Airlines

20 Jan

BNE

34h 45m

3 stops

ORD

26 Jan

ORD

36h 15m

3 stops

BNE

$1,522

Philippine Airlines

9 Nov

PER

22h 20m

1 stop

ORD

25 Nov

ORD

42h 35m

1 stop

PER

$1,529

Multiple Airlines

24 Nov

BNE

34h 49m

2 stops

ORD

1 Dec

ORD

35h 15m

3 stops

BNE

$1,558

Flights to Moline

Search all flight deals to Moline

Multiple Airlines

13 Dec

MEL

27h 49m

2 stops

MLI

20 Dec

MLI

24h 47m

2 stops

MEL

$3,661

Multiple Airlines

13 Dec

MEL

25h 49m

3 stops

MLI

20 Dec

MLI

24h 47m

2 stops

MEL

$3,663

Multiple Airlines

13 Dec

MEL

21h 49m

1 stop

MLI

20 Dec

MLI

24h 47m

2 stops

MEL

$3,771

Multiple Airlines

13 Dec

MEL

26h 49m

3 stops

MLI

20 Dec

MLI

29h 39m

3 stops

MEL

$4,113

Emirates

10 Dec

MEL

55h 48m

2 stops

MLI

17 Dec

MLI

38h 37m

2 stops

MEL

$6,008

Emirates

13 Dec

MEL

39h 33m

2 stops

MLI

20 Dec

MLI

45h 41m

2 stops

MEL

$25,518

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.

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

21h 55m1 stop Los Angeles

13:30 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 30m1 stop Los Angeles

$1,043American Airlines

Tue, 17 Nov - Wed, 2 Dec

11:10 - 06:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 55m1 stop Los Angeles

21:04 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 56m1 stop Los Angeles

$1,044American Airlines

Thu, 12 Nov - Mon, 16 Nov

10:40 - 18:09SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

24h 29m2 stops Los Angeles Salt Lake City

13:10 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 20m2 stops Salt Lake City Los Angeles

$1,120Delta

Fri, 29 Jan - Sun, 7 Feb

10:40 - 21:33SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 53m2 stops Los Angeles Minneapolis St Paul

18:10 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 20m1 stop Los Angeles

$1,121Delta

Wed, 18 Nov - Thu, 3 Dec

11:30 - 16:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

46h 25m1 stop Manila Ninoy Aquino Intl

22:45 - 09:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 05m1 stop Manila Ninoy Aquino Intl

$1,426Philippine Airlines

Tue, 2 Feb - Fri, 5 Mar

08:35 - 16:55PER Perth-ORD Chicago O'Hare Intl

22h 20m1 stop Manila Ninoy Aquino Intl

22:45 - 07:20ORD Chicago O'Hare Intl-PER Perth

42h 35m1 stop Manila Ninoy Aquino Intl

$1,482Philippine Airlines

Mon, 9 Nov - Mon, 23 Nov

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

$1,739Cathay Pacific

Thu, 12 Nov - Tue, 17 Nov

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

$1,739Cathay Pacific

Tue, 10 Nov - Tue, 17 Nov

06:25 - 16:54ADL Adelaide-ORD Chicago O'Hare Intl

26h 59m2 stops Brisbane Los Angeles

16:59 - 13:30ORD Chicago O'Hare Intl-ADL Adelaide

28h 01m2 stops Los Angeles Melbourne

$1,766Qantas Airways

Mon, 1 Feb - Mon, 22 Feb

06:25 - 19:56ADL Adelaide-ORD Chicago O'Hare Intl

30h 01m2 stops Brisbane Los Angeles

15:25 - 13:30ORD Chicago O'Hare Intl-ADL Adelaide

29h 35m2 stops Los Angeles Melbourne

$1,766Qantas Airways

Wed, 3 Feb - Mon, 22 Feb

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

11:10 - 00:01SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

29h 51m1 stop Los Angeles

15:25 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 35m1 stop Los Angeles

$1,039American Airlines

Mon, 2 Nov - Mon, 16 Nov

11:10 - 06:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 55m1 stop Los Angeles

17:29 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 31m2 stops Phoenix Sky Harbor Intl Los Angeles

$1,039American Airlines

Mon, 2 Nov - Mon, 16 Nov

10:40 - 15:45SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 05m1 stop Los Angeles

15:47 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

23h 43m2 stops Minneapolis St Paul Los Angeles

$1,050Delta

Mon, 2 Nov - Sun, 15 Nov

10:40 - 19:11SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 31m2 stops Los Angeles Atlanta Hartsfield-Jackson

14:44 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 46m2 stops Detroit Metropolitan Wayne County Los Angeles

$1,050Delta

Mon, 2 Nov - Sun, 15 Nov

10:45 - 05:13BNE Brisbane-ORD Chicago O'Hare Intl

34h 28m3 stops Vancouver Intl Los Angeles Las Vegas Harry Reid Intl

06:30 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

34h 15m3 stops Denver Intl Ontario Vancouver Intl

$1,685Multiple Airlines

Mon, 2 Nov - Sun, 15 Nov

15:30 - 13:30MEL 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

$1,786Cathay Pacific

Sun, 1 Nov - Sun, 8 Nov

08:45 - 12:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

44h 45m1 stop Hong Kong Intl

14:10 - 07:15ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

48h 05m1 stop Hong Kong Intl

$1,806Cathay Pacific

Mon, 2 Nov - Mon, 9 Nov

13:10 - 05:13BNE Brisbane-ORD Chicago O'Hare Intl

32h 03m2 stops Los Angeles Las Vegas Harry Reid Intl

06:30 - 05:50ORD Chicago O'Hare Intl-BNE Brisbane

31h 20m2 stops Denver Intl Ontario

$1,847Multiple Airlines

Mon, 2 Nov - Sun, 15 Nov

12:10 - 23:00MEL Melbourne-ORD Chicago O'Hare Intl

26h 50m2 stops Auckland Intl Los Angeles

07:29 - 10:55ORD Chicago O'Hare Intl-MEL Melbourne

34h 26m2 stops Houston George Bush Intcntl Auckland Intl

$2,391Air New Zealand

Sun, 1 Nov - Sun, 8 Nov

11:20 - 19:52SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

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

07:05 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 30m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Vancouver Intl

$2,613Air Canada

Mon, 2 Nov - Mon, 9 Nov

Fly from

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 17/11

11:10-16:05

1 stop21h 55m

Chicago O'Hare Intl

Wed 2/12

13:30-09:00

1 stop26h 30m

$1,043

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 12/11

11:10-06:05

1 stop35h 55m

Chicago O'Hare Intl

Mon 16/11

21:04-09:00

1 stop42h 56m

$1,044

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Fri 29/1

10:40-18:09

2 stops24h 29m

Chicago O'Hare Intl

Sun 7/2

13:10-08:30

2 stops26h 20m

$1,120

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 18/11

10:40-21:33

2 stops27h 53m

Chicago O'Hare Intl

Thu 3/12

18:10-08:30

1 stop21h 20m

$1,121

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 2/2

11:30-16:55

1 stop46h 25m

Chicago O'Hare Intl

Fri 5/3

22:45-09:50

1 stop42h 05m

$1,426

PerthChicago

PER Perth - ORD Chicago O'Hare Intl

PERORD

Perth

Mon 9/11

08:35-16:55

1 stop22h 20m

Chicago O'Hare Intl

Mon 23/11

22:45-07:20

1 stop42h 35m

$1,482

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Thu 12/11

15:30-12:30

1 stop38h 00m

Chicago O'Hare Intl

Tue 17/11

14:10-23:05

1 stop39h 55m

$1,739

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Tue 10/11

00:45-12:30

1 stop28h 45m

Chicago O'Hare Intl

Tue 17/11

14:10-23:05

1 stop39h 55m

$1,739

AdelaideChicago

ADL Adelaide - ORD Chicago O'Hare Intl

ADLORD

Adelaide

Mon 1/2

06:25-16:54

2 stops26h 59m

Chicago O'Hare Intl

Mon 22/2

16:59-13:30

2 stops28h 01m

$1,766

AdelaideChicago

ADL Adelaide - ORD Chicago O'Hare Intl

ADLORD

Adelaide

Wed 3/2

06:25-19:56

2 stops30h 01m

Chicago O'Hare Intl

Mon 22/2

15:25-13:30

2 stops29h 35m

$1,766

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 American 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	$614
Best Round-Trip Price	$1,043
Fastest flight time	24h 50m

The best one-way flight price to Illinois from Australia in the last 5 days is $614 (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 $1,043 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 24h 50m (Sydney Kingsford Smith 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 $232/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $906/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 American 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 October 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.