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 28h 32m and 24h 35m, respectively.

$680 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

25 Oct

SYD

32h 34m

2 stops

ORD

29 Oct

ORD

47h 35m

3 stops

SYD

$1,371

Multiple Airlines

25 Oct

SYD

49h 43m

3 stops

MDW

29 Oct

MDW

38h 19m

3 stops

SYD

$1,422

Multiple Airlines

21 Oct

BNE

33h 59m

2 stops

ORD

28 Oct

ORD

36h 55m

3 stops

BNE

$1,456

Multiple Airlines

11 Oct

SYD

31h 01m

3 stops

ORD

18 Oct

ORD

43h 59m

3 stops

SYD

$1,489

Multiple Airlines

7 Oct

SYD

31h 02m

3 stops

ORD

23 Oct

ORD

34h 09m

3 stops

SYD

$1,506

Philippine Airlines

14 Feb

BNE

45h 20m

1 stop

ORD

17 Feb

ORD

43h 30m

1 stop

BNE

$1,530

Multiple Airlines

10 Sept

SYD

26h 30m

3 stops

ORD

13 Sept

ORD

38h 20m

3 stops

SYD

$1,531

Multiple Airlines

11 Oct

SYD

31h 01m

3 stops

ORD

18 Oct

ORD

41h 59m

3 stops

SYD

$1,535

Multiple Airlines

10 Sept

SYD

26h 30m

3 stops

ORD

13 Sept

ORD

38h 20m

3 stops

SYD

$1,541

Multiple Airlines

11 Oct

SYD

31h 01m

3 stops

ORD

18 Oct

ORD

47h 55m

3 stops

SYD

$1,547

Philippine Airlines

15 Feb

MEL

24h 35m

1 stop

ORD

15 Mar

ORD

39h 45m

1 stop

MEL

$1,558

Multiple Airlines

8 Oct

MEL

30h 56m

3 stops

ORD

20 Oct

ORD

39h 05m

3 stops

MEL

$1,611

Flights to Moline

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United Airlines

10 Dec

BNE

49h 58m

2 stops

MLI

6 Jan

MLI

47h 45m

2 stops

BNE

$2,293

Cathay Pacific

5 Oct

BNE

39h 06m

2 stops

MLI

20 Oct

MLI

37h 50m

2 stops

BNE

$2,330

Multiple Airlines

5 Oct

BNE

39h 06m

2 stops

MLI

20 Oct

MLI

43h 44m

3 stops

BNE

$2,405

United Airlines

10 Dec

BNE

25h 43m

2 stops

MLI

6 Jan

MLI

49h 04m

2 stops

BNE

$2,674

Multiple Airlines

6 Oct

BNE

33h 16m

3 stops

MLI

20 Oct

MLI

26h 39m

3 stops

BNE

$2,945

Qantas Airways

10 Dec

BNE

23h 03m

1 stop

MLI

6 Jan

MLI

36h 58m

2 stops

BNE

$2,993

Multiple Airlines

10 Dec

BNE

33h 22m

3 stops

MLI

6 Jan

MLI

30h 38m

2 stops

BNE

$3,068

American Airlines

11 Nov

BNE

26h 07m

2 stops

MLI

15 Nov

MLI

24h 32m

2 stops

BNE

$3,089

American Airlines

11 Nov

BNE

26h 07m

2 stops

MLI

15 Nov

MLI

24h 32m

2 stops

BNE

$3,094

American Airlines

11 Nov

BNE

37h 49m

2 stops

MLI

15 Nov

MLI

26h 27m

2 stops

BNE

$3,097

American Airlines

11 Nov

BNE

26h 57m

2 stops

MLI

15 Nov

MLI

34h 45m

2 stops

BNE

$3,100

Qantas Airways

10 Dec

BNE

30h 27m

2 stops

MLI

6 Jan

MLI

37h 25m

3 stops

BNE

$3,103

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 - 06:34SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 34m2 stops Nadi Los Angeles

06:30 - 22:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

47h 35m3 stops Denver Intl Los Angeles Nadi

$1,371Multiple Airlines

Sun, 25 Oct - Thu, 29 Oct

14:00 - 23:43SYD Sydney Kingsford Smith-MDW Chicago Midway

49h 43m3 stops Nadi Los Angeles Atlanta Hartsfield-Jackson

06:16 - 12:35MDW Chicago Midway-SYD Sydney Kingsford Smith

38h 19m3 stops Atlanta Hartsfield-Jackson Los Angeles Nadi

$1,422Multiple Airlines

Sun, 25 Oct - Thu, 29 Oct

22:45 - 17:41MEL Melbourne-STL Lambert-St Louis

35h 56m2 stops Los Angeles Dallas/Fort Worth

14:54 - 05:00STL Lambert-St Louis-MEL Melbourne

21h 06m1 stop Dallas/Fort Worth

$1,482American Airlines

Fri, 5 Feb - Tue, 9 Feb

22:45 - 16:28MEL Melbourne-STL Lambert-St Louis

34h 43m2 stops Los Angeles Dallas/Fort Worth

09:00 - 05:00STL Lambert-St Louis-MEL Melbourne

27h 00m1 stop Dallas/Fort Worth

$1,482American Airlines

Fri, 5 Feb - Tue, 9 Feb

09:05 - 18:20BNE Brisbane-STL Lambert-St Louis

24h 15m2 stops Melbourne Dallas/Fort Worth

06:04 - 05:00STL Lambert-St Louis-BNE Brisbane

31h 56m1 stop Los Angeles

$1,651Qantas Airways

Mon, 12 Oct - Mon, 19 Oct

11:20 - 16:53BNE Brisbane-STL Lambert-St Louis

21h 33m2 stops San Francisco Chicago O'Hare Intl

08:30 - 07:30STL Lambert-St Louis-BNE Brisbane

31h 00m1 stop San Francisco

$1,660United Airlines

Wed, 13 Jan - Wed, 27 Jan

11:20 - 17:54BNE Brisbane-STL Lambert-St Louis

22h 34m1 stop San Francisco

08:30 - 07:30STL Lambert-St Louis-BNE Brisbane

31h 00m1 stop San Francisco

$1,660United Airlines

Wed, 13 Jan - Wed, 27 Jan

09:55 - 20:22SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 27m2 stops Auckland Intl San Francisco

09:15 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

30h 20m2 stops Houston George Bush Intcntl Auckland Intl

$1,778Air New Zealand

Wed, 4 Nov - Mon, 9 Nov

08:35 - 23:27MEL Melbourne-ORD Chicago O'Hare Intl

30h 52m2 stops Auckland Intl Houston George Bush Intcntl

14:22 - 10:55ORD Chicago O'Hare Intl-MEL Melbourne

28h 33m2 stops Houston George Bush Intcntl Auckland Intl

$1,792Air New Zealand

Wed, 7 Oct - Tue, 27 Oct

18:50 - 23:46SYD Sydney Kingsford Smith-STL Lambert-St Louis

20h 56m1 stop Los Angeles

06:04 - 07:30STL Lambert-St Louis-SYD Sydney Kingsford Smith

33h 26m1 stop Los Angeles

$1,905Qantas Airways

Thu, 8 Oct - Thu, 15 Oct

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

14:55 - 05:59BNE Brisbane-ORD Chicago O'Hare Intl

54h 04m2 stops Melbourne Los Angeles

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

33h 00m3 stops Denver Intl Los Angeles San Francisco

$1,766Multiple Airlines

Sat, 5 Sep - Fri, 18 Sep

20:35 - 05:59BNE Brisbane-ORD Chicago O'Hare Intl

24h 24m1 stop Los Angeles

20:55 - 05:00ORD Chicago O'Hare Intl-BNE Brisbane

41h 05m2 stops Las Vegas Harry Reid Intl Los Angeles

$1,813Multiple Airlines

Sat, 5 Sep - Fri, 18 Sep

20:35 - 05:00BNE Brisbane-ORD Chicago O'Hare Intl

23h 25m1 stop Los Angeles

13:50 - 05:00ORD Chicago O'Hare Intl-BNE Brisbane

24h 10m1 stop Los Angeles

$2,316American Airlines

Thu, 3 Sep - Thu, 17 Sep

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

19h 30m1 stop San Francisco

18:20 - 09:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 00m1 stop San Francisco

$2,346United Airlines

Sat, 5 Sep - Sun, 8 Nov

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

19h 30m1 stop San Francisco

18:20 - 09:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 00m1 stop San Francisco

$2,346United Airlines

Sat, 5 Sep - Mon, 2 Nov

09:20 - 14:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 16m1 stop Vancouver Intl

11:05 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

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

$2,466Air Canada

Tue, 1 Sep - Wed, 9 Sep

06:00 - 14:20MEL Melbourne-ORD Chicago O'Hare Intl

47h 20m2 stops Brisbane Hong Kong Intl

16:00 - 11:15ORD Chicago O'Hare Intl-MEL Melbourne

28h 15m1 stop Hong Kong Intl

$2,496Cathay Pacific

Wed, 2 Sep - Sat, 12 Sep

14:20 - 14:20MEL Melbourne-ORD Chicago O'Hare Intl

63h 00m2 stops Brisbane Hong Kong Intl

16:00 - 11:15ORD Chicago O'Hare Intl-MEL Melbourne

28h 15m1 stop Hong Kong Intl

$2,496Cathay Pacific

Tue, 1 Sep - Sat, 12 Sep

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

24h 37m2 stops Auckland Intl Houston George Bush Intcntl

16:40 - 08:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 05m2 stops Los Angeles Auckland Intl

$2,503Air New Zealand

Wed, 2 Sep - Wed, 9 Sep

09:20 - 20:01SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 41m2 stops Vancouver Intl Edmonton

11:05 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

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

$3,019Air Canada

Wed, 2 Sep - Wed, 9 Sep

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sun 25/10

14:00-06:34

2 stops32h 34m

Chicago O'Hare Intl

Thu 29/10

06:30-22:05

3 stops47h 35m

$1,371

SydneyChicago

SYD Sydney Kingsford Smith - MDW Chicago Midway

SYDMDW

Sydney Kingsford Smith

Sun 25/10

14:00-23:43

3 stops49h 43m

Chicago Midway

Thu 29/10

06:16-12:35

3 stops38h 19m

$1,422

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Fri 5/2

22:45-17:41

2 stops35h 56m

Lambert-St Louis

Tue 9/2

14:54-05:00

1 stop21h 06m

$1,482

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Fri 5/2

22:45-16:28

2 stops34h 43m

Lambert-St Louis

Tue 9/2

09:00-05:00

1 stop27h 00m

$1,482

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Mon 12/10

09:05-18:20

2 stops24h 15m

Lambert-St Louis

Mon 19/10

06:04-05:00

1 stop31h 56m

$1,651

Fastest return journey

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Wed 13/1

11:20-16:53

2 stops21h 33m

Lambert-St Louis

Wed 27/1

08:30-07:30

1 stop31h 00m

$1,660

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Wed 13/1

11:20-17:54

1 stop22h 34m

Lambert-St Louis

Wed 27/1

08:30-07:30

1 stop31h 00m

$1,660

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 4/11

09:55-20:22

2 stops27h 27m

Chicago O'Hare Intl

Mon 9/11

09:15-08:35

2 stops30h 20m

$1,778

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 7/10

08:35-23:27

2 stops30h 52m

Chicago O'Hare Intl

Tue 27/10

14:22-10:55

2 stops28h 33m

$1,792

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Thu 8/10

18:50-23:46

1 stop20h 56m

Lambert-St Louis

Thu 15/10

06:04-07:30

1 stop33h 26m

$1,905

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 36% 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	$826
Best Round-Trip Price	$1,371
Fastest flight time	24h 35m

The best one-way flight price to Illinois from Australia in the last 5 days is $826 (Melbourne to Lambert-St Louis).

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The best return flight price to Illinois from Australia in the last 5 days is $1,371 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 24h 35m (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 $105/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $665/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, 36% 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.