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 23m and 24h 25m, respectively.

$561 Cheap Flights to Illinois in 2026

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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

1 Oct

SYD

26h 30m

3 stops

ORD

26 Oct

ORD

38h 05m

3 stops

SYD

$1,317

Air Canada

27 Oct

SYD

20h 17m

1 stop

ORD

24 Nov

ORD

31h 46m

1 stop

SYD

$1,320

Air Canada

27 Oct

SYD

25h 41m

1 stop

ORD

24 Nov

ORD

26h 40m

2 stops

SYD

$1,323

Air Canada

27 Oct

SYD

25h 32m

2 stops

ORD

24 Nov

ORD

26h 40m

2 stops

SYD

$1,326

Air Canada

27 Oct

SYD

25h 32m

2 stops

ORD

24 Nov

ORD

29h 58m

3 stops

SYD

$1,335

Air Canada

5 Oct

SYD

25h 46m

1 stop

ORD

19 Oct

ORD

24h 40m

1 stop

SYD

$1,337

Air Canada

5 Oct

SYD

25h 46m

1 stop

ORD

19 Oct

ORD

24h 40m

1 stop

SYD

$1,338

Air Canada

5 Oct

SYD

20h 23m

1 stop

ORD

19 Oct

ORD

29h 15m

2 stops

SYD

$1,340

Air Canada

5 Oct

SYD

20h 23m

1 stop

ORD

19 Oct

ORD

29h 15m

2 stops

SYD

$1,341

Air Canada

5 Oct

SYD

25h 52m

2 stops

ORD

19 Oct

ORD

29h 15m

2 stops

SYD

$1,342

Air Canada

5 Oct

SYD

25h 52m

2 stops

ORD

19 Oct

ORD

29h 15m

2 stops

SYD

$1,344

Air Canada

1 Oct

SYD

20h 23m

1 stop

ORD

26 Oct

ORD

25h 05m

1 stop

SYD

$1,349

Flights to Moline

Search all flight deals to Moline

American Airlines

11 Nov

BNE

26h 07m

2 stops

MLI

15 Nov

MLI

45h 30m

2 stops

BNE

$1,705

American Airlines

11 Nov

BNE

26h 57m

2 stops

MLI

15 Nov

MLI

44h 47m

2 stops

BNE

$1,714

United Airlines

25 Oct

BNE

38h 24m

2 stops

MLI

1 Nov

MLI

48h 59m

2 stops

BNE

$1,807

Multiple Airlines

25 Oct

BNE

30h 41m

3 stops

MLI

1 Nov

MLI

29h 50m

3 stops

BNE

$1,867

United Airlines

11 Dec

BNE

51h 50m

2 stops

MLI

8 Jan

MLI

54h 40m

2 stops

BNE

$1,886

United Airlines

10 Dec

BNE

49h 58m

2 stops

MLI

6 Jan

MLI

44h 30m

2 stops

BNE

$1,889

United Airlines

25 Oct

BNE

22h 23m

2 stops

MLI

1 Nov

MLI

30h 59m

3 stops

BNE

$2,123

American Airlines

8 Dec

BNE

30h 08m

1 stop

MLI

9 Jan

MLI

68h 47m

2 stops

BNE

$2,237

American Airlines

8 Dec

BNE

46h 48m

2 stops

MLI

9 Jan

MLI

68h 47m

2 stops

BNE

$2,245

American Airlines

7 Dec

BNE

41h 23m

2 stops

MLI

9 Jan

MLI

68h 47m

2 stops

BNE

$2,273

United Airlines

10 Dec

BNE

51h 50m

2 stops

MLI

8 Jan

MLI

54h 40m

2 stops

BNE

$2,313

United Airlines

10 Dec

BNE

38h 35m

2 stops

MLI

6 Jan

MLI

30h 40m

2 stops

BNE

$2,324

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.

13:15 - 00:45SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 30m3 stops Nadi Los Angeles Dallas/Fort Worth

06:30 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

38h 05m3 stops Denver Intl Los Angeles Nadi

$1,317Multiple Airlines

Thu, 1 Oct - Mon, 26 Oct

10:20 - 14:37SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 17m1 stop Vancouver Intl

08:49 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 46m1 stop Vancouver Intl

$1,320Air Canada

Tue, 27 Oct - Tue, 24 Nov

10:20 - 20:01SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 41m1 stop Vancouver Intl

15:30 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 05m1 stop Vancouver Intl

$1,320Air Canada

Wed, 28 Oct - Tue, 24 Nov

10:00 - 16:35BNE Brisbane-ORD Chicago O'Hare Intl

21h 35m2 stops Vancouver Intl Winnipeg

15:49 - 07:45ORD Chicago O'Hare Intl-BNE Brisbane

24h 56m2 stops Seattle/Tacoma Intl Vancouver Intl

$1,363Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

09:45 - 00:30MEL Melbourne-ORD Chicago O'Hare Intl

30h 45m1 stop Los Angeles

12:10 - 05:00ORD Chicago O'Hare Intl-MEL Melbourne

24h 50m1 stop Dallas/Fort Worth

$1,365American Airlines

Sat, 24 Oct - Sun, 25 Oct

09:45 - 00:30MEL Melbourne-ORD Chicago O'Hare Intl

30h 45m1 stop Los Angeles

13:15 - 05:00ORD Chicago O'Hare Intl-MEL Melbourne

23h 45m2 stops Minneapolis St Paul Dallas/Fort Worth

$1,372American Airlines

Sat, 24 Oct - Sun, 25 Oct

14:35 - 18:20MEL Melbourne-STL Lambert-St Louis

19h 45m1 stop Dallas/Fort Worth

15:20 - 05:00STL Lambert-St Louis-MEL Melbourne

21h 40m1 stop Dallas/Fort Worth

$1,417Qantas Airways

Mon, 5 Oct - Mon, 12 Oct

09:45 - 23:46MEL Melbourne-STL Lambert-St Louis

30h 01m1 stop Los Angeles

15:20 - 05:00STL Lambert-St Louis-MEL Melbourne

21h 40m1 stop Dallas/Fort Worth

$1,551Qantas Airways

Sat, 10 Oct - Mon, 12 Oct

00:05 - 13:55BNE Brisbane-ORD Chicago O'Hare Intl

28h 50m1 stop Hong Kong Intl

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

41h 10m1 stop Hong Kong Intl

$1,558Cathay Pacific

Wed, 21 Oct - Thu, 29 Oct

15:25 - 13:55MEL Melbourne-ORD Chicago O'Hare Intl

38h 30m1 stop Hong Kong Intl

15:10 - 12:30ORD Chicago O'Hare Intl-MEL Melbourne

29h 20m1 stop Hong Kong Intl

$1,836Cathay Pacific

Thu, 22 Oct - Fri, 30 Oct

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

09:20 - 12:02SYD Sydney Kingsford Smith-STL Lambert-St Louis

41h 42m2 stops Vancouver Intl Chicago O'Hare Intl

16:39 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

23h 56m2 stops Denver Intl Vancouver Intl

$1,595Air Canada

Thu, 17 Sep - Fri, 30 Oct

09:10 - 23:30SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 20m1 stop Los Angeles

18:44 - 06:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

43h 11m1 stop Dallas/Fort Worth

$1,637Qantas Airways

Thu, 17 Sep - Sat, 7 Nov

09:10 - 23:30SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 20m1 stop Los Angeles

08:10 - 09:00STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 50m1 stop Los Angeles

$1,639American Airlines

Thu, 17 Sep - Thu, 5 Nov

09:10 - 16:40SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 30m2 stops Los Angeles Dallas/Fort Worth

08:10 - 09:00STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 50m1 stop Los Angeles

$1,639American Airlines

Thu, 17 Sep - Thu, 5 Nov

09:10 - 23:30SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 20m1 stop Los Angeles

18:44 - 06:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

43h 11m1 stop Dallas/Fort Worth

$1,641Qantas Airways

Thu, 17 Sep - Sat, 7 Nov

09:15 - 16:47SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 32m2 stops Los Angeles Minneapolis St Paul

07:00 - 08:30STL Lambert-St Louis-SYD Sydney Kingsford Smith

32h 30m2 stops Atlanta Hartsfield-Jackson Los Angeles

$1,664Delta

Tue, 15 Sep - Thu, 5 Nov

17:50 - 09:24SYD Sydney Kingsford Smith-STL Lambert-St Louis

30h 34m3 stops Los Angeles Las Vegas Harry Reid Intl Dallas/Fort Worth

20:15 - 06:25STL Lambert-St Louis-SYD Sydney Kingsford Smith

41h 10m3 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl Los Angeles

$1,711Multiple Airlines

Thu, 17 Sep - Sat, 7 Nov

18:15 - 14:20BNE Brisbane-ORD Chicago O'Hare Intl

59h 05m2 stops Sydney Kingsford Smith Hong Kong Intl

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

39h 15m1 stop Hong Kong Intl

$2,070Cathay Pacific

Sat, 12 Sep - Fri, 25 Sep

18:15 - 14:20BNE Brisbane-ORD Chicago O'Hare Intl

59h 05m2 stops Sydney Kingsford Smith Hong Kong Intl

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

39h 15m1 stop Hong Kong Intl

$2,170Cathay Pacific

Sat, 12 Sep - Fri, 25 Sep

09:20 - 20:06SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 46m1 stop Vancouver Intl

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

29h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$2,373Air Canada

Thu, 17 Sep - Wed, 14 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 1/10

13:15-00:45

3 stops26h 30m

Chicago O'Hare Intl

Mon 26/10

06:30-12:35

3 stops38h 05m

$1,317

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 27/10

10:20-14:37

1 stop20h 17m

Chicago O'Hare Intl

Tue 24/11

08:49-09:35

1 stop31h 46m

$1,320

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 28/10

10:20-20:01

1 stop25h 41m

Chicago O'Hare Intl

Tue 24/11

15:30-09:35

1 stop25h 05m

$1,320

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Thu 22/10

10:00-16:35

2 stops21h 35m

Chicago O'Hare Intl

Thu 29/10

15:49-07:45

2 stops24h 56m

$1,363

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Sat 24/10

09:45-00:30

1 stop30h 45m

Chicago O'Hare Intl

Sun 25/10

12:10-05:00

1 stop24h 50m

$1,365

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Sat 24/10

09:45-00:30

1 stop30h 45m

Chicago O'Hare Intl

Sun 25/10

13:15-05:00

2 stops23h 45m

$1,372

Fastest return journey

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Mon 5/10

14:35-18:20

1 stop19h 45m

Lambert-St Louis

Mon 12/10

15:20-05:00

1 stop21h 40m

$1,417

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Sat 10/10

09:45-23:46

1 stop30h 01m

Lambert-St Louis

Mon 12/10

15:20-05:00

1 stop21h 40m

$1,551

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Wed 21/10

00:05-13:55

1 stop28h 50m

Chicago O'Hare Intl

Thu 29/10

15:10-23:20

1 stop41h 10m

$1,558

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Thu 22/10

15:25-13:55

1 stop38h 30m

Chicago O'Hare Intl

Fri 30/10

15:10-12:30

1 stop29h 20m

$1,836

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

Find flights to Chicago

Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$561
Best Round-Trip Price	$1,317
Fastest flight time	24h 10m

The best one-way flight price to Illinois from Australia in the last 5 days is $561 (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 $1,317 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 24h 10m (Sydney Kingsford Smith to Lambert-St Louis).

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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 $105/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $681/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, Chicago Water Tower and Chicago Riverwalk 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.