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 01m and 20h 13m, respectively.

$686 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

Qantas Airways

17 Nov

SYD

21h 25m

1 stop

ORD

24 Nov

ORD

33h 20m

1 stop

SYD

$1,453

Philippine Airlines

19 Nov

SYD

46h 25m

1 stop

ORD

25 Nov

ORD

42h 05m

1 stop

SYD

$1,454

Philippine Airlines

6 Apr

BNE

45h 45m

1 stop

ORD

26 Apr

ORD

43h 10m

1 stop

BNE

$1,473

American Airlines

26 Nov

SYD

30h 03m

1 stop

ORD

5 Dec

ORD

21h 55m

1 stop

SYD

$1,480

Philippine Airlines

8 Nov

SYD

46h 25m

1 stop

ORD

23 Nov

ORD

42h 05m

1 stop

SYD

$1,484

Philippine Airlines

6 Apr

BNE

45h 45m

1 stop

ORD

28 Apr

ORD

43h 10m

1 stop

BNE

$1,505

Philippine Airlines

13 Nov

MEL

24h 35m

1 stop

ORD

18 Nov

ORD

39h 45m

1 stop

MEL

$1,510

Philippine Airlines

15 Nov

SYD

46h 25m

1 stop

ORD

25 Nov

ORD

42h 05m

1 stop

SYD

$1,512

Philippine Airlines

6 Apr

BNE

45h 45m

1 stop

ORD

23 Apr

ORD

43h 10m

1 stop

BNE

$1,530

Philippine Airlines

19 Nov

SYD

46h 25m

1 stop

ORD

23 Nov

ORD

42h 05m

1 stop

SYD

$1,530

Philippine Airlines

15 Nov

SYD

46h 25m

1 stop

ORD

23 Nov

ORD

42h 05m

1 stop

SYD

$1,556

Philippine Airlines

16 Feb

SYD

46h 25m

1 stop

ORD

23 Apr

ORD

43h 00m

1 stop

SYD

$1,565

Flights to Moline

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Lufthansa

2 Dec

MEL

25h 18m

2 stops

MLI

9 Dec

MLI

31h 00m

2 stops

MEL

$1,635

Multiple Airlines

30 Nov

MEL

44h 35m

2 stops

MLI

7 Dec

MLI

30h 40m

2 stops

MEL

$2,671

American Airlines

28 Nov

MEL

21h 43m

1 stop

MLI

5 Dec

MLI

29h 00m

1 stop

MEL

$2,721

American Airlines

28 Nov

MEL

29h 07m

2 stops

MLI

5 Dec

MLI

25h 11m

2 stops

MEL

$2,771

Multiple Airlines

30 Nov

MEL

33h 07m

3 stops

MLI

7 Dec

MLI

31h 39m

3 stops

MEL

$2,916

Multiple Airlines

30 Nov

MEL

28h 10m

2 stops

MLI

7 Dec

MLI

31h 39m

3 stops

MEL

$2,919

Multiple Airlines

2 Dec

MEL

25h 49m

3 stops

MLI

9 Dec

MLI

31h 39m

3 stops

MEL

$3,021

Multiple Airlines

2 Dec

MEL

33h 16m

3 stops

MLI

9 Dec

MLI

29h 04m

2 stops

MEL

$3,031

Multiple Airlines

28 Nov

MEL

33h 07m

3 stops

MLI

5 Dec

MLI

24h 34m

2 stops

MEL

$3,175

Multiple Airlines

28 Nov

MEL

33h 07m

3 stops

MLI

5 Dec

MLI

29h 39m

3 stops

MEL

$3,215

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.

14:05 - 18:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 25m1 stop Dallas/Fort Worth

06:40 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 20m1 stop Los Angeles

$1,453Qantas Airways

Tue, 17 Nov - Tue, 24 Nov

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

$1,453Philippine Airlines

Thu, 12 Nov - Mon, 30 Nov

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

$1,454Philippine Airlines

Thu, 19 Nov - Wed, 25 Nov

11:10 - 00:13SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 03m1 stop Los Angeles

16:00 - 06:55ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 55m1 stop Dallas/Fort Worth

$1,480American Airlines

Thu, 26 Nov - Sat, 5 Dec

22:45 - 17:00MEL Melbourne-ORD Chicago O'Hare Intl

35h 15m1 stop Los Angeles

15:51 - 10:20ORD Chicago O'Hare Intl-MEL Melbourne

25h 29m2 stops Dallas/Fort Worth Sydney Kingsford Smith

$1,585American Airlines

Sun, 15 Nov - Wed, 25 Nov

13:10 - 17:00BNE Brisbane-ORD Chicago O'Hare Intl

19h 50m1 stop Los Angeles

18:02 - 06:30ORD Chicago O'Hare Intl-BNE Brisbane

20h 28m1 stop Dallas/Fort Worth

$1,618Qantas Airways

Tue, 10 Nov - Mon, 7 Dec

11:50 - 14:49SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

19h 59m1 stop San Francisco

21:57 - 09:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 23m1 stop San Francisco

$1,702United Airlines

Thu, 5 Nov - Mon, 9 Nov

11:20 - 17:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 45m2 stops Los Angeles Denver Intl

16:07 - 09:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

23h 58m2 stops Denver Intl Los Angeles

$1,702United Airlines

Wed, 4 Nov - Tue, 1 Dec

10:40 - 13:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 07m1 stop Los Angeles

13:55 - 06:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 55m2 stops Salt Lake City Los Angeles

$1,704Delta

Mon, 15 Feb - Wed, 21 Apr

10:40 - 13:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 07m1 stop Los Angeles

18:30 - 06:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 20m1 stop Los Angeles

$1,704Delta

Tue, 16 Feb - Sun, 18 Apr

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

13:00 - 18:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 36m1 stop Dallas/Fort Worth

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

42h 56m1 stop Los Angeles

$1,452Qantas Airways

Thu, 22 Oct - Sat, 7 Nov

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

30h 20m1 stop Los Angeles

20:56 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

40h 29m1 stop San Francisco

$1,487Iberia

Thu, 22 Oct - Sat, 7 Nov

22:20 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

31h 35m1 stop Hong Kong Intl

15:10 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 25m1 stop Hong Kong Intl

$1,717Cathay Pacific

Wed, 21 Oct - Mon, 26 Oct

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

40h 35m1 stop Hong Kong Intl

15:10 - 23:20ORD Chicago O'Hare Intl-BNE Brisbane

41h 10m1 stop Hong Kong Intl

$1,890Cathay Pacific

Tue, 20 Oct - Tue, 27 Oct

22:20 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

31h 35m1 stop Hong Kong Intl

15:10 - 22:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

39h 15m2 stops Hong Kong Intl Melbourne

$1,993Multiple Airlines

Wed, 21 Oct - Mon, 26 Oct

06:00 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

47h 55m2 stops Brisbane Hong Kong Intl

14:10 - 20:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

37h 40m1 stop Hong Kong Intl

$2,068Cathay Pacific

Thu, 22 Oct - Sat, 7 Nov

05:50 - 13:55BNE Brisbane-ORD Chicago O'Hare Intl

71h 05m2 stops Perth Hong Kong Intl

15:10 - 23:20ORD Chicago O'Hare Intl-BNE Brisbane

41h 10m1 stop Hong Kong Intl

$2,167Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

10:20 - 20:12SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 52m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

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

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

$2,707Air Canada

Thu, 22 Oct - Wed, 4 Nov

10:20 - 17:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 45m2 stops Vancouver Intl Calgary

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

29h 58m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Vancouver Intl

$2,933Air Canada

Thu, 22 Oct - Sat, 7 Nov

08:40 - 21:31BNE Brisbane-ORD Chicago O'Hare Intl

27h 51m2 stops Auckland Intl Los Angeles

14:22 - 10:00ORD Chicago O'Hare Intl-BNE Brisbane

28h 38m2 stops Houston George Bush Intcntl Auckland Intl

$3,192Air New Zealand

Tue, 20 Oct - Tue, 27 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 17/11

14:05-18:30

1 stop21h 25m

Chicago O'Hare Intl

Tue 24/11

06:40-09:00

1 stop33h 20m

$1,453

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 12/11

11:30-16:55

1 stop46h 25m

Chicago O'Hare Intl

Mon 30/11

22:45-09:50

1 stop42h 05m

$1,453

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 19/11

11:30-16:55

1 stop46h 25m

Chicago O'Hare Intl

Wed 25/11

22:45-09:50

1 stop42h 05m

$1,454

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 26/11

11:10-00:13

1 stop30h 03m

Chicago O'Hare Intl

Sat 5/12

16:00-06:55

1 stop21h 55m

$1,480

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Sun 15/11

22:45-17:00

1 stop35h 15m

Chicago O'Hare Intl

Wed 25/11

15:51-10:20

2 stops25h 29m

$1,585

Fastest return journey

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Tue 10/11

13:10-17:00

1 stop19h 50m

Chicago O'Hare Intl

Mon 7/12

18:02-06:30

1 stop20h 28m

$1,618

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 5/11

11:50-14:49

1 stop19h 59m

Chicago O'Hare Intl

Mon 9/11

21:57-09:20

1 stop42h 23m

$1,702

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 4/11

11:20-17:05

2 stops22h 45m

Chicago O'Hare Intl

Tue 1/12

16:07-09:05

2 stops23h 58m

$1,702

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 15/2

10:40-13:47

1 stop20h 07m

Chicago O'Hare Intl

Wed 21/4

13:55-06:50

2 stops25h 55m

$1,704

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 16/2

10:40-13:47

1 stop20h 07m

Chicago O'Hare Intl

Sun 18/4

18:30-06:50

1 stop21h 20m

$1,704

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 42% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 9 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	$686
Best Round-Trip Price	$1,453
Fastest flight time	22h 20m

The best one-way flight price to Illinois from Australia in the last 5 days is $686 (Brisbane to Chicago O'Hare Intl).

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The best return flight price to Illinois from Australia in the last 5 days is $1,453 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 22h 20m (Perth 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 $176/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $823/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 9 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, 42% 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 9 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.