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 23h 39m and 29h 51m, respectively.

$852 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

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Multiple Airlines

2 Nov

SYD

32h 13m

3 stops

ORD

9 Nov

ORD

37h 05m

3 stops

SYD

$1,274

Multiple Airlines

2 Nov

SYD

32h 13m

3 stops

ORD

9 Nov

ORD

37h 05m

3 stops

SYD

$1,367

Multiple Airlines

5 Nov

SYD

32h 13m

3 stops

ORD

12 Nov

ORD

33h 09m

3 stops

SYD

$1,497

Multiple Airlines

5 Nov

SYD

32h 13m

3 stops

ORD

12 Nov

ORD

33h 09m

3 stops

SYD

$1,532

Cathay Pacific

3 Nov

BNE

27h 40m

1 stop

ORD

11 Nov

ORD

41h 10m

1 stop

BNE

$1,576

Cathay Pacific

2 Nov

BNE

40h 15m

1 stop

ORD

9 Nov

ORD

28h 35m

1 stop

BNE

$1,583

Cathay Pacific

5 Nov

BNE

27h 40m

1 stop

ORD

13 Nov

ORD

41h 10m

1 stop

BNE

$1,626

Multiple Airlines

18 Oct

MEL

36h 04m

1 stop

ORD

3 Nov

ORD

35h 00m

3 stops

MEL

$1,643

Cathay Pacific

19 Jan

BNE

40h 15m

1 stop

ORD

15 Feb

ORD

41h 10m

1 stop

BNE

$1,654

Cathay Pacific

5 Nov

BNE

40h 15m

1 stop

ORD

9 Nov

ORD

28h 35m

1 stop

BNE

$1,659

Cathay Pacific

5 Nov

BNE

40h 15m

1 stop

ORD

9 Nov

ORD

28h 35m

1 stop

BNE

$1,661

Cathay Pacific

5 Nov

BNE

40h 15m

1 stop

ORD

9 Nov

ORD

28h 35m

1 stop

BNE

$1,663

Flights to Peoria, Illinois

Search all flight deals to Peoria, Illinois

United Airlines

18 Oct

SYD

28h 28m

2 stops

PIA

25 Oct

PIA

28h 17m

2 stops

SYD

$2,971

Flights to Moline

Search all flight deals to Moline

Qatar Airways

5 Nov

MEL

41h 27m

2 stops

MLI

12 Nov

MLI

42h 50m

2 stops

MEL

$1,974

United Airlines

6 Nov

MEL

25h 27m

2 stops

MLI

13 Nov

MLI

32h 17m

2 stops

MEL

$2,130

Multiple Airlines

5 Nov

MEL

41h 13m

3 stops

MLI

12 Nov

MLI

42h 45m

2 stops

MEL

$2,567

American Airlines

5 Nov

MEL

27h 07m

2 stops

MLI

12 Nov

MLI

24h 27m

1 stop

MEL

$2,648

Multiple Airlines

5 Nov

MEL

37h 33m

3 stops

MLI

12 Nov

MLI

41h 00m

3 stops

MEL

$2,675

United Airlines

4 Oct

MEL

23h 08m

2 stops

MLI

8 Oct

MLI

50h 02m

2 stops

MEL

$3,045

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 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 Los Angeles Nadi

$1,274Multiple Airlines

Mon, 2 Nov - Mon, 9 Nov

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

32h 13m3 stops Nadi Los Angeles 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 Los Angeles Nadi

$1,367Multiple Airlines

Mon, 2 Nov - Mon, 9 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

$1,576Cathay Pacific

Tue, 3 Nov - Wed, 11 Nov

12:15 - 12:30BNE Brisbane-ORD Chicago O'Hare Intl

40h 15m1 stop Hong Kong Intl

14:10 - 10:45ORD Chicago O'Hare Intl-BNE Brisbane

28h 35m1 stop Hong Kong Intl

$1,583Cathay Pacific

Mon, 2 Nov - Mon, 9 Nov

07:30 - 22:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

31h 30m2 stops Auckland Intl Los Angeles Los Angeles

09:21 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

30h 14m2 stops Houston George Bush Intcntl Auckland Intl

$1,691Air New Zealand

Tue, 10 Nov - Tue, 17 Nov

08:35 - 21:37MEL Melbourne-ORD Chicago O'Hare Intl

29h 02m2 stops Auckland Intl San Francisco

14:22 - 18:00ORD Chicago O'Hare Intl-MEL Melbourne

35h 38m2 stops Houston George Bush Intcntl Auckland Intl

$1,727Air New Zealand

Tue, 20 Oct - Tue, 27 Oct

11:10 - 17:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

46h 50m1 stop Los Angeles Los Angeles

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

21h 15m1 stop Los Angeles Los Angeles

$1,765American Airlines

Wed, 4 Nov - Mon, 9 Nov

10:10 - 15:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 49m1 stop Los Angeles Los Angeles

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

22h 05m1 stop Los Angeles Los Angeles

$1,854Qantas Airways

Mon, 12 Oct - Tue, 27 Oct

10:10 - 15:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 49m1 stop Los Angeles Los Angeles

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

22h 05m1 stop Los Angeles Los Angeles

$1,924Qantas Airways

Sun, 11 Oct - Mon, 26 Oct

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

35h 15m1 stop Los Angeles Los Angeles

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

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

$1,969American Airlines

Sun, 15 Nov - Wed, 25 Nov

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

20:50 - 08:35SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

50h 45m1 stop Abu Dhabi Zayed Intl

06:30 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 30m3 stops Denver Intl Los Angeles Los Angeles Manila Ninoy Aquino Intl

$2,209Multiple Airlines

Mon, 28 Sep - Tue, 13 Oct

20:50 - 08:35SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

50h 45m1 stop Abu Dhabi Zayed Intl

06:30 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 30m3 stops Denver Intl Los Angeles Los Angeles Manila Ninoy Aquino Intl

$2,217Multiple Airlines

Mon, 28 Sep - Tue, 13 Oct

23:45 - 13:55MEL Melbourne-ORD Chicago O'Hare Intl

29h 10m1 stop Hong Kong Intl

16:15 - 22:15ORD Chicago O'Hare Intl-MEL Melbourne

39h 00m1 stop Hong Kong Intl

$2,487Cathay Pacific

Wed, 23 Sep - Wed, 30 Sep

07:25 - 13:55MEL Melbourne-ORD Chicago O'Hare Intl

45h 30m1 stop Hong Kong Intl

16:15 - 22:15ORD Chicago O'Hare Intl-MEL Melbourne

39h 00m1 stop Hong Kong Intl

$2,538Cathay Pacific

Sat, 26 Sep - Mon, 28 Sep

09:10 - 14:20SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 10m1 stop Los Angeles Los Angeles

10:30 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 35m1 stop Los Angeles Los Angeles

$2,886American Airlines

Mon, 28 Sep - Sun, 11 Oct

09:10 - 14:20SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 10m1 stop Los Angeles Los Angeles

18:55 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 10m1 stop Los Angeles Los Angeles

$2,886American Airlines

Mon, 28 Sep - Wed, 7 Oct

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

19h 30m1 stop San Francisco

21:40 - 07:55ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 15m1 stop San Francisco

$2,968United Airlines

Sun, 27 Sep - Sat, 10 Oct

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

19h 30m1 stop San Francisco

21:40 - 07:55ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 15m1 stop San Francisco

$2,968United Airlines

Fri, 25 Sep - Sat, 10 Oct

08:55 - 20:30CBR Canberra-ORD Chicago O'Hare Intl

26h 35m2 stops Melbourne Dallas/Fort Worth

17:53 - 18:40ORD Chicago O'Hare Intl-CBR Canberra

32h 47m2 stops Los Angeles Los Angeles Sydney Kingsford Smith

$3,605Qantas Airways

Sat, 26 Sep - Thu, 8 Oct

10:00 - 19:36CBR Canberra-ORD Chicago O'Hare Intl

24h 36m2 stops Melbourne Dallas/Fort Worth

17:53 - 18:40ORD Chicago O'Hare Intl-CBR Canberra

32h 47m2 stops Los Angeles Los Angeles Sydney Kingsford Smith

$3,608Qantas Airways

Sat, 26 Sep - Thu, 8 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 2/11

14:00-05:13

3 stops32h 13m

Chicago O'Hare Intl

Mon 9/11

06:30-12:35

3 stops37h 05m

$1,274

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 2/11

14:00-05:13

3 stops32h 13m

Chicago O'Hare Intl

Mon 9/11

06:30-12:35

3 stops37h 05m

$1,367

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Tue 3/11

00:50-12:30

1 stop27h 40m

Chicago O'Hare Intl

Wed 11/11

14:10-23:20

1 stop41h 10m

$1,576

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Mon 2/11

12:15-12:30

1 stop40h 15m

Chicago O'Hare Intl

Mon 9/11

14:10-10:45

1 stop28h 35m

$1,583

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 10/11

07:30-22:00

2 stops31h 30m

Chicago O'Hare Intl

Tue 17/11

09:21-08:35

2 stops30h 14m

$1,691

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Tue 20/10

08:35-21:37

2 stops29h 02m

Chicago O'Hare Intl

Tue 27/10

14:22-18:00

2 stops35h 38m

$1,727

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 4/11

11:10-17:00

1 stop46h 50m

Chicago O'Hare Intl

Mon 9/11

18:45-09:00

1 stop21h 15m

$1,765

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 12/10

10:10-15:59

1 stop21h 49m

Chicago O'Hare Intl

Tue 27/10

18:55-09:00

1 stop22h 05m

$1,854

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sun 11/10

10:10-15:59

1 stop21h 49m

Chicago O'Hare Intl

Mon 26/10

18:55-09:00

1 stop22h 05m

$1,924

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

$1,969

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 37% 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	$745
Best Round-Trip Price	$1,274
Fastest flight time	31h 20m

The best one-way flight price to Illinois from Australia in the last 5 days is $745 (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 $1,274 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 31h 20m (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 $152/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $683/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, 37% 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.