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 26h 50m and 20h 41m, respectively.

$858 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

Search all flight deals to Chicago

Multiple Airlines

8 Sept

SYD

32h 02m

2 stops

ORD

22 Sept

ORD

48h 55m

3 stops

SYD

$1,156

Multiple Airlines

8 Sept

SYD

32h 02m

2 stops

ORD

22 Sept

ORD

38h 50m

3 stops

SYD

$1,177

Qantas Airways

31 Aug

MEL

22h 06m

1 stop

ORD

7 June

ORD

24h 22m

1 stop

MEL

$1,337

Qantas Airways

31 Aug

MEL

21h 09m

1 stop

ORD

7 June

ORD

30h 36m

1 stop

MEL

$1,367

Multiple Airlines

9 Oct

SYD

31h 01m

3 stops

ORD

25 Oct

ORD

38h 05m

3 stops

SYD

$1,389

Multiple Airlines

4 Nov

PER

34h 47m

2 stops

ORD

11 Nov

ORD

35h 05m

2 stops

PER

$1,460

Multiple Airlines

2 Sept

BNE

33h 24m

2 stops

ORD

9 Sept

ORD

37h 50m

3 stops

BNE

$1,498

Multiple Airlines

3 Sept

SYD

48h 32m

2 stops

ORD

16 Sept

ORD

33h 30m

2 stops

SYD

$1,527

Multiple Airlines

2 Sept

BNE

33h 24m

2 stops

ORD

9 Sept

ORD

37h 50m

3 stops

BNE

$1,538

Multiple Airlines

3 Sept

SYD

48h 32m

2 stops

ORD

16 Sept

ORD

33h 30m

2 stops

SYD

$1,572

Multiple Airlines

14 Sept

BNE

56h 48m

3 stops

ORD

21 Sept

ORD

37h 05m

3 stops

BNE

$1,583

Multiple Airlines

3 Sept

SYD

48h 32m

2 stops

ORD

16 Sept

ORD

33h 25m

3 stops

SYD

$1,588

Flights to Moline

Search all flight deals to Moline

United Airlines

7 Dec

BNE

27h 24m

2 stops

MLI

7 Jan

MLI

45h 48m

2 stops

BNE

$1,869

Delta

9 Dec

BNE

39h 40m

2 stops

MLI

4 Jan

MLI

29h 30m

2 stops

BNE

$2,200

United Airlines

7 Dec

BNE

25h 18m

2 stops

MLI

5 Jan

MLI

54h 40m

2 stops

BNE

$2,204

United Airlines

12 Dec

BNE

38h 34m

2 stops

MLI

3 Jan

MLI

33h 20m

2 stops

BNE

$2,249

Multiple Airlines

1 Oct

BNE

39h 00m

2 stops

MLI

9 Oct

MLI

44h 09m

2 stops

BNE

$2,259

United Airlines

7 Dec

BNE

25h 18m

2 stops

MLI

4 Jan

MLI

47h 47m

2 stops

BNE

$2,268

Multiple Airlines

1 Oct

BNE

38h 13m

2 stops

MLI

9 Oct

MLI

37h 19m

3 stops

BNE

$2,275

Multiple Airlines

2 Oct

BNE

44h 45m

3 stops

MLI

9 Oct

MLI

37h 19m

3 stops

BNE

$2,320

United Airlines

12 Dec

BNE

38h 34m

2 stops

MLI

9 Jan

MLI

25h 04m

2 stops

BNE

$2,362

United Airlines

10 Dec

BNE

38h 34m

2 stops

MLI

8 Jan

MLI

25h 04m

2 stops

BNE

$2,418

American Airlines

16 Feb

BNE

41h 21m

1 stop

MLI

20 Feb

MLI

49h 09m

2 stops

BNE

$2,452

American Airlines

16 Feb

BNE

41h 21m

1 stop

MLI

20 Feb

MLI

49h 09m

2 stops

BNE

$2,454

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 - 06:17SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 02m2 stops Nadi Los Angeles

06:30 - 22:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

48h 55m3 stops Denver Intl Los Angeles Nadi

$1,156Multiple Airlines

Tue, 8 Sep - Tue, 22 Sep

13:15 - 06:17SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 02m2 stops Nadi Los Angeles

06:00 - 11:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

38h 50m3 stops Dallas/Fort Worth Los Angeles Nadi

$1,177Multiple Airlines

Tue, 8 Sep - Tue, 22 Sep

09:45 - 16:51MEL Melbourne-ORD Chicago O'Hare Intl

22h 06m1 stop Los Angeles

15:23 - 06:45ORD Chicago O'Hare Intl-MEL Melbourne

24h 22m1 stop Los Angeles

$1,337Qantas Airways

Mon, 31 Aug - Mon, 7 Jun

09:45 - 15:54MEL Melbourne-ORD Chicago O'Hare Intl

21h 09m1 stop Los Angeles

09:09 - 06:45ORD Chicago O'Hare Intl-MEL Melbourne

30h 36m1 stop Los Angeles

$1,367Qantas Airways

Mon, 31 Aug - Mon, 7 Jun

11:20 - 23:59SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 39m1 stop Los Angeles

10:12 - 11:45STL Lambert-St Louis-SYD Sydney Kingsford Smith

32h 33m2 stops Dallas/Fort Worth Brisbane

$1,557American Airlines

Tue, 26 Jan - Sat, 30 Jan

11:20 - 23:59SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 39m1 stop Los Angeles

10:12 - 11:45STL Lambert-St Louis-SYD Sydney Kingsford Smith

32h 33m2 stops Dallas/Fort Worth Brisbane

$1,561American Airlines

Tue, 26 Jan - Sat, 30 Jan

09:55 - 23:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 10m2 stops Auckland Intl Los Angeles

16:00 - 08:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 45m2 stops San Francisco Auckland Intl

$1,727Air New Zealand

Tue, 8 Sep - Tue, 22 Sep

09:55 - 00:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 04m2 stops Auckland Intl San Francisco

14:35 - 08:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

27h 10m2 stops San Francisco Auckland Intl

$1,745Air New Zealand

Tue, 8 Sep - Tue, 22 Sep

11:50 - 18:09SYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 19m2 stops San Francisco Chicago O'Hare Intl

13:08 - 09:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 57m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Los Angeles

$1,756United Airlines

Tue, 17 Nov - Tue, 1 Dec

11:30 - 16:26MEL Melbourne-STL Lambert-St Louis

21h 56m2 stops Los Angeles Denver Intl

09:40 - 09:30STL Lambert-St Louis-MEL Melbourne

30h 50m2 stops Chicago O'Hare Intl Los Angeles

$1,805United Airlines

Tue, 8 Dec - Tue, 12 Jan

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

09:45 - 17:29MEL Melbourne-ORD Chicago O'Hare Intl

22h 44m1 stop Los Angeles

17:16 - 06:45ORD Chicago O'Hare Intl-MEL Melbourne

22h 29m1 stop Los Angeles

$1,280Qantas Airways

Sat, 22 Aug - Sat, 29 Aug

09:45 - 15:54MEL Melbourne-ORD Chicago O'Hare Intl

21h 09m1 stop Los Angeles

17:16 - 09:30ORD Chicago O'Hare Intl-MEL Melbourne

25h 14m2 stops Los Angeles Brisbane

$1,328American Airlines

Sat, 22 Aug - Sat, 29 Aug

10:55 - 19:00MEL Melbourne-ORD Chicago O'Hare Intl

23h 05m2 stops San Francisco Los Angeles

16:45 - 08:15ORD Chicago O'Hare Intl-MEL Melbourne

24h 30m2 stops Los Angeles San Francisco

$1,364United Airlines

Sat, 22 Aug - Sat, 29 Aug

06:00 - 14:20SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

47h 20m2 stops Melbourne Hong Kong Intl

16:00 - 20:10ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

37h 10m1 stop Hong Kong Intl

$2,544Cathay Pacific

Mon, 24 Aug - Sun, 6 Sep

11:55 - 21:32SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

24h 37m2 stops Auckland Intl Houston George Bush Intcntl

15:48 - 08:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 57m2 stops Los Angeles Auckland Intl

$2,634Air New Zealand

Mon, 24 Aug - Sun, 6 Sep

09:55 - 23:26SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 31m2 stops Auckland Intl Houston George Bush Intcntl

15:00 - 08:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 45m2 stops Los Angeles Auckland Intl

$2,747Air New Zealand

Wed, 26 Aug - Fri, 11 Sep

11:45 - 04:45SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 00m2 stops Tokyo Haneda Los Angeles

17:00 - 19:10ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

35h 10m2 stops New York LaGuardia Tokyo Haneda

$2,759ANA

Mon, 24 Aug - Sun, 6 Sep

09:10 - 14:54SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 44m1 stop Los Angeles

19:00 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 05m1 stop Los Angeles

$2,787Qantas Airways

Mon, 24 Aug - Sun, 6 Sep

10:55 - 18:39MEL Melbourne-STL Lambert-St Louis

22h 44m1 stop San Francisco

10:53 - 08:15STL Lambert-St Louis-MEL Melbourne

30h 22m2 stops Chicago O'Hare Intl San Francisco

$2,903United Airlines

Wed, 26 Aug - Sun, 30 Aug

13:35 - 18:05MEL Melbourne-STL Lambert-St Louis

19h 30m1 stop Dallas/Fort Worth

06:00 - 06:45STL Lambert-St Louis-MEL Melbourne

33h 45m1 stop Los Angeles

$3,168American Airlines

Wed, 26 Aug - Sun, 30 Aug

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 8/9

13:15-06:17

2 stops32h 02m

Chicago O'Hare Intl

Tue 22/9

06:30-22:25

3 stops48h 55m

$1,156

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 8/9

13:15-06:17

2 stops32h 02m

Chicago O'Hare Intl

Tue 22/9

06:00-11:50

3 stops38h 50m

$1,177

Fastest return journey

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Mon 31/8

09:45-16:51

1 stop22h 06m

Chicago O'Hare Intl

Mon 7/6

15:23-06:45

1 stop24h 22m

$1,337

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Mon 31/8

09:45-15:54

1 stop21h 09m

Chicago O'Hare Intl

Mon 7/6

09:09-06:45

1 stop30h 36m

$1,367

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 26/1

11:20-23:59

1 stop29h 39m

Lambert-St Louis

Sat 30/1

10:12-11:45

2 stops32h 33m

$1,557

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 26/1

11:20-23:59

1 stop29h 39m

Lambert-St Louis

Sat 30/1

10:12-11:45

2 stops32h 33m

$1,561

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 8/9

09:55-23:05

2 stops28h 10m

Chicago O'Hare Intl

Tue 22/9

16:00-08:45

2 stops25h 45m

$1,727

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 8/9

09:55-00:59

2 stops30h 04m

Chicago O'Hare Intl

Tue 22/9

14:35-08:45

2 stops27h 10m

$1,745

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 17/11

11:50-18:09

2 stops23h 19m

Lambert-St Louis

Tue 1/12

13:08-09:05

3 stops26h 57m

$1,756

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Tue 8/12

11:30-16:26

2 stops21h 56m

Lambert-St Louis

Tue 12/1

09:40-09:30

2 stops30h 50m

$1,805

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 Canada 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 33% 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	$858
Best Round-Trip Price	$1,156
Fastest flight time	23h 55m

The best one-way flight price to Illinois from Australia in the last 5 days is $858 (Melbourne to Lambert-St Louis).

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The best return flight price to Illinois from Australia in the last 5 days is $1,156 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 23h 55m (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 $106/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $711/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 Canada happen to be the most popular among our users. In the past year, 33% 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 August 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.