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 12m and 24h 35m, respectively.

$629 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

5 Nov

SYD

23h 49m

1 stop

ORD

9 Nov

ORD

29h 28m

1 stop

SYD

$1,058

American Airlines

19 Oct

SYD

25h 50m

1 stop

ORD

3 Nov

ORD

26h 36m

1 stop

SYD

$1,062

American Airlines

27 Oct

SYD

45h 24m

1 stop

ORD

26 Nov

ORD

24h 35m

1 stop

SYD

$1,192

American Airlines

14 Nov

SYD

25h 49m

1 stop

ORD

21 Nov

ORD

24h 35m

1 stop

SYD

$1,198

Qantas Airways

13 Nov

SYD

22h 50m

1 stop

ORD

20 Nov

ORD

42h 57m

1 stop

SYD

$1,265

Multiple Airlines

9 Nov

SYD

32h 13m

3 stops

ORD

16 Nov

ORD

37h 05m

3 stops

SYD

$1,383

Multiple Airlines

2 Nov

SYD

32h 13m

3 stops

ORD

23 Nov

ORD

32h 00m

3 stops

SYD

$1,405

Air Canada

12 Nov

BNE

25h 07m

2 stops

ORD

19 Nov

ORD

33h 40m

2 stops

BNE

$1,434

Air Canada

5 Nov

BNE

25h 14m

1 stop

ORD

9 Nov

ORD

33h 40m

2 stops

BNE

$1,444

Air Canada

5 Nov

BNE

25h 07m

2 stops

ORD

9 Nov

ORD

33h 40m

2 stops

BNE

$1,448

Air Canada

5 Nov

BNE

19h 52m

1 stop

ORD

9 Nov

ORD

33h 40m

2 stops

BNE

$1,450

Air Canada

5 Nov

BNE

25h 07m

2 stops

ORD

9 Nov

ORD

33h 40m

2 stops

BNE

$1,454

Flights to Moline

Search all flight deals to Moline

Delta

10 Nov

MEL

41h 09m

2 stops

MLI

17 Nov

MLI

33h 00m

2 stops

MEL

$1,516

American Airlines

10 Nov

MEL

28h 48m

1 stop

MLI

17 Nov

MLI

27h 07m

2 stops

MEL

$2,411

Multiple Airlines

10 Nov

MEL

42h 18m

3 stops

MLI

17 Nov

MLI

42h 45m

2 stops

MEL

$2,542

Multiple Airlines

10 Nov

MEL

42h 18m

3 stops

MLI

17 Nov

MLI

36h 40m

3 stops

MEL

$2,652

American Airlines

10 Nov

MEL

21h 43m

1 stop

MLI

17 Nov

MLI

24h 27m

1 stop

MEL

$5,117

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.

10:10 - 20:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 50m1 stop Los Angeles

13:24 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 36m1 stop Los Angeles

$1,062American Airlines

Mon, 19 Oct - Tue, 3 Nov

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

22h 50m1 stop Los Angeles

13:24 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 36m1 stop Los Angeles

$1,062American Airlines

Tue, 3 Nov - Mon, 30 Nov

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

22h 50m1 stop Los Angeles

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

42h 57m1 stop Los Angeles

$1,265Qantas Airways

Fri, 13 Nov - Fri, 20 Nov

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

32h 13m3 stops Nadi 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 Nadi

$1,383Multiple Airlines

Mon, 9 Nov - Mon, 16 Nov

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

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

11:35 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

32h 00m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

$1,405Multiple Airlines

Mon, 2 Nov - Mon, 23 Nov

10:45 - 19:52BNE Brisbane-ORD Chicago O'Hare Intl

25h 07m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

07:05 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

33h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,434Air Canada

Thu, 12 Nov - Thu, 19 Nov

10:45 - 14:37BNE Brisbane-ORD Chicago O'Hare Intl

19h 52m1 stop Vancouver Intl

07:05 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

33h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,450Air Canada

Thu, 5 Nov - Mon, 9 Nov

00:50 - 12:30BNE Brisbane-ORD Chicago O'Hare Intl

27h 40m1 stop Hong Kong Intl

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

28h 35m1 stop Hong Kong Intl

$1,598Cathay Pacific

Wed, 11 Nov - Mon, 30 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

$1,882Cathay Pacific

Wed, 11 Nov - Wed, 18 Nov

13:00 - 18:35SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 35m1 stop Dallas/Fort Worth

08:29 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

32h 31m1 stop Los Angeles

$1,930Qantas Airways

Mon, 19 Oct - Mon, 26 Oct

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

20:50 - 15:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 05m1 stop Abu Dhabi Zayed Intl

20:25 - 06:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 10m1 stop Abu Dhabi Zayed Intl

$1,914Etihad Airways

Mon, 5 Oct - Tue, 13 Oct

09:10 - 15:53SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 43m1 stop Los Angeles

20:30 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 35m1 stop Los Angeles

$2,062American Airlines

Thu, 1 Oct - Fri, 9 Oct

20:50 - 15:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 05m1 stop Abu Dhabi Zayed Intl

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

32h 00m2 stops Istanbul Kuala Lumpur Intl

$2,136Multiple Airlines

Mon, 5 Oct - Tue, 13 Oct

09:10 - 16:49SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 39m1 stop Los Angeles

13:50 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 15m1 stop Los Angeles

$2,152American Airlines

Fri, 2 Oct - Sun, 11 Oct

07:40 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

45h 15m1 stop Hong Kong Intl

16:15 - 07:10ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

46h 55m1 stop Hong Kong Intl

$2,438Cathay Pacific

Thu, 1 Oct - Fri, 9 Oct

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

21h 45m2 stops San Francisco Denver Intl

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

42h 15m1 stop San Francisco

$2,984United Airlines

Thu, 1 Oct - Fri, 9 Oct

09:10 - 12:22SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

42h 12m1 stop Los Angeles

15:20 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 45m1 stop Los Angeles

$2,984American Airlines

Thu, 1 Oct - Fri, 9 Oct

10:10 - 16:51SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 41m1 stop Los Angeles

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

21h 10m1 stop Los Angeles

$6,414Qantas Airways

Mon, 5 Oct - Tue, 13 Oct

10:20 - 07:51SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 31m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

08:40 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 40m2 stops Calgary Vancouver Intl

$9,186Air Canada

Mon, 5 Oct - Tue, 13 Oct

10:20 - 07:51SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 31m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

11:05 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 15m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Vancouver Intl

$9,203Air Canada

Mon, 5 Oct - Tue, 13 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 19/10

10:10-20:00

1 stop25h 50m

Chicago O'Hare Intl

Tue 3/11

13:24-09:00

1 stop26h 36m

$1,062

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 3/11

11:10-17:00

1 stop22h 50m

Chicago O'Hare Intl

Mon 30/11

13:24-09:00

1 stop26h 36m

$1,062

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Fri 13/11

11:10-17:00

1 stop22h 50m

Chicago O'Hare Intl

Fri 20/11

21:03-09:00

1 stop42h 57m

$1,265

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 9/11

14:00-05:13

3 stops32h 13m

Chicago O'Hare Intl

Mon 16/11

06:30-12:35

3 stops37h 05m

$1,383

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 23/11

11:35-12:35

3 stops32h 00m

$1,405

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Thu 12/11

10:45-19:52

2 stops25h 07m

Chicago O'Hare Intl

Thu 19/11

07:05-08:45

2 stops33h 40m

$1,434

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Thu 5/11

10:45-14:37

1 stop19h 52m

Chicago O'Hare Intl

Mon 9/11

07:05-08:45

2 stops33h 40m

$1,450

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Wed 11/11

00:50-12:30

1 stop27h 40m

Chicago O'Hare Intl

Mon 30/11

14:10-10:45

1 stop28h 35m

$1,598

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 11/11

15:30-12:30

1 stop38h 00m

Chicago O'Hare Intl

Wed 18/11

14:10-23:05

1 stop39h 55m

$1,882

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 19/10

13:00-18:35

1 stop21h 35m

Chicago O'Hare Intl

Mon 26/10

08:29-09:00

1 stop32h 31m

$1,930

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 38% 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	$629
Best Round-Trip Price	$1,058
Fastest flight time	22h 49m

The best one-way flight price to Illinois from Australia in the last 5 days is $629 (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 $1,058 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 22h 49m (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 $155/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $695/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, 38% 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.