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 10m and 20h 41m, respectively.

$694 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

9 Sept

SYD

35h 05m

3 stops

ORD

16 Sept

ORD

38h 50m

3 stops

SYD

$1,144

Multiple Airlines

8 Sept

SYD

32h 02m

2 stops

ORD

22 Sept

ORD

48h 55m

3 stops

SYD

$1,168

Multiple Airlines

8 Sept

SYD

32h 02m

2 stops

ORD

22 Sept

ORD

48h 55m

3 stops

SYD

$1,225

Multiple Airlines

8 Sept

SYD

32h 02m

2 stops

ORD

22 Sept

ORD

49h 25m

3 stops

SYD

$1,259

Multiple Airlines

3 Sept

BNE

67h 09m

3 stops

ORD

16 Sept

ORD

37h 05m

3 stops

BNE

$1,377

Multiple Airlines

23 Sept

BNE

36h 45m

3 stops

ORD

12 Nov

ORD

36h 15m

3 stops

BNE

$1,500

Multiple Airlines

12 Oct

PER

42h 03m

2 stops

ORD

28 Oct

ORD

39h 10m

2 stops

PER

$1,514

Multiple Airlines

12 Oct

PER

33h 18m

2 stops

ORD

28 Oct

ORD

36h 05m

2 stops

PER

$1,572

Multiple Airlines

12 Oct

PER

33h 18m

2 stops

ORD

28 Oct

ORD

39h 10m

2 stops

PER

$1,596

Multiple Airlines

4 Sept

BNE

33h 42m

2 stops

ORD

25 Sept

ORD

33h 09m

3 stops

BNE

$1,601

Multiple Airlines

19 Oct

PER

33h 18m

2 stops

ORD

3 Nov

ORD

38h 10m

2 stops

PER

$1,604

Multiple Airlines

12 Oct

PER

42h 03m

2 stops

ORD

28 Oct

ORD

39h 10m

2 stops

PER

$1,618

Flights to Moline

Search all flight deals to Moline

United Airlines

11 Dec

BNE

25h 23m

2 stops

MLI

8 Jan

MLI

45h 48m

2 stops

BNE

$5,856

United Airlines

11 Dec

BNE

25h 23m

2 stops

MLI

8 Jan

MLI

45h 48m

2 stops

BNE

$5,857

United Airlines

11 Dec

BNE

25h 23m

2 stops

MLI

8 Jan

MLI

45h 48m

2 stops

BNE

$5,863

United Airlines

11 Dec

BNE

25h 23m

2 stops

MLI

8 Jan

MLI

45h 48m

2 stops

BNE

$5,953

United Airlines

11 Dec

BNE

25h 23m

2 stops

MLI

8 Jan

MLI

45h 48m

2 stops

BNE

$5,961

United Airlines

15 Sept

BNE

25h 31m

2 stops

MLI

7 Oct

MLI

28h 41m

2 stops

BNE

$6,723

United Airlines

15 Sept

BNE

25h 31m

2 stops

MLI

7 Oct

MLI

28h 41m

2 stops

BNE

$6,726

United Airlines

15 Sept

BNE

25h 30m

2 stops

MLI

7 Oct

MLI

28h 41m

2 stops

BNE

$6,730

United Airlines

15 Sept

BNE

25h 30m

2 stops

MLI

7 Oct

MLI

28h 41m

2 stops

BNE

$6,737

Qantas Airways

11 Dec

BNE

23h 48m

2 stops

MLI

8 Jan

MLI

21h 12m

1 stop

BNE

$7,346

Qantas Airways

11 Dec

BNE

23h 03m

1 stop

MLI

8 Jan

MLI

21h 12m

1 stop

BNE

$7,350

Qantas Airways

11 Dec

BNE

30h 27m

2 stops

MLI

8 Jan

MLI

26h 08m

1 stop

BNE

$7,357

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

35h 05m3 stops Nadi Los Angeles Los Angeles Atlanta Hartsfield-Jackson

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

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

$1,144Multiple Airlines

Wed, 9 Sep - Wed, 16 Sep

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

32h 02m2 stops Nadi Los Angeles Los Angeles

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

48h 55m3 stops Denver Intl Los Angeles Los Angeles Nadi

$1,168Multiple Airlines

Tue, 8 Sep - Tue, 22 Sep

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

29h 39m1 stop Los Angeles Los Angeles

16:57 - 18:00STL Lambert-St Louis-SYD Sydney Kingsford Smith

32h 03m2 stops Dallas/Fort Worth Brisbane

$1,606American Airlines

Tue, 26 Jan - Sat, 30 Jan

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

29h 39m1 stop Los Angeles Los Angeles

14:54 - 18:00STL Lambert-St Louis-SYD Sydney Kingsford Smith

34h 06m2 stops Dallas/Fort Worth Brisbane

$1,606American Airlines

Tue, 26 Jan - Sat, 30 Jan

12:00 - 17:41MEL Melbourne-STL Lambert-St Louis

22h 41m1 stop Dallas/Fort Worth

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

21h 06m1 stop Dallas/Fort Worth

$1,647Qantas Airways

Thu, 21 Jan - Thu, 18 Feb

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

19h 45m1 stop Dallas/Fort Worth

19:05 - 05:00STL Lambert-St Louis-MEL Melbourne

40h 55m1 stop Dallas/Fort Worth

$1,678Qantas Airways

Sat, 10 Oct - Mon, 2 Nov

11:50 - 18:05SYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 15m1 stop San Francisco

16:17 - 07:00STL Lambert-St Louis-SYD Sydney Kingsford Smith

21h 43m1 stop Houston George Bush Intcntl

$1,738United Airlines

Wed, 18 Nov - Wed, 2 Dec

09:20 - 16:50SYD Sydney Kingsford Smith-STL Lambert-St Louis

24h 30m1 stop Houston George Bush Intcntl

19:06 - 09:20STL Lambert-St Louis-SYD Sydney Kingsford Smith

21h 14m1 stop San Francisco

$1,738United Airlines

Mon, 16 Nov - Wed, 2 Dec

12:10 - 21:32MEL Melbourne-ORD Chicago O'Hare Intl

24h 22m2 stops Auckland Intl Houston George Bush Intcntl

16:00 - 10:55ORD Chicago O'Hare Intl-MEL Melbourne

27h 55m2 stops San Francisco Auckland Intl

$1,743Air New Zealand

Thu, 10 Sep - Wed, 16 Sep

12:10 - 23:27MEL Melbourne-ORD Chicago O'Hare Intl

26h 17m2 stops Auckland Intl Houston George Bush Intcntl

15:48 - 13:45ORD Chicago O'Hare Intl-MEL Melbourne

30h 57m2 stops Los Angeles Los Angeles Auckland Intl

$1,743Air New Zealand

Thu, 10 Sep - Wed, 16 Sep

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

09:45 - 19:30MEL Melbourne-ORD Chicago O'Hare Intl

24h 45m2 stops Los Angeles Los Angeles Las Vegas Harry Reid Intl

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

33h 00m2 stops Denver Intl Los Angeles Los Angeles

$1,335American Airlines

Mon, 17 Aug - Sun, 30 Aug

09:45 - 17:47MEL Melbourne-ORD Chicago O'Hare Intl

23h 02m1 stop Los Angeles Los Angeles

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

33h 00m2 stops Denver Intl Los Angeles Los Angeles

$1,335American Airlines

Mon, 17 Aug - Sun, 30 Aug

10:55 - 18:32MEL Melbourne-ORD Chicago O'Hare Intl

22h 37m1 stop San Francisco

15:35 - 08:15ORD Chicago O'Hare Intl-MEL Melbourne

25h 40m1 stop San Francisco

$1,366United Airlines

Thu, 20 Aug - Thu, 27 Aug

10:55 - 16:36MEL Melbourne-ORD Chicago O'Hare Intl

20h 41m1 stop San Francisco

10:27 - 08:15ORD Chicago O'Hare Intl-MEL Melbourne

30h 48m2 stops Los Angeles Los Angeles San Francisco

$1,366United Airlines

Thu, 20 Aug - Thu, 27 Aug

17:50 - 06:17SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 27m1 stop Los Angeles Los Angeles

21:20 - 07:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 10m1 stop Los Angeles Los Angeles

$1,901Multiple Airlines

Mon, 17 Aug - Sat, 29 Aug

06:00 - 17:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 47m2 stops Melbourne Los Angeles Los Angeles

17:16 - 10:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 14m2 stops Los Angeles Los Angeles Melbourne

$1,903Qantas Airways

Mon, 17 Aug - Sat, 29 Aug

17:50 - 06:17SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 27m1 stop Los Angeles Los Angeles

06:00 - 07:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 30m2 stops Seattle/Tacoma Intl Los Angeles Los Angeles

$2,224Multiple Airlines

Mon, 17 Aug - Sat, 29 Aug

07:00 - 14:20BNE Brisbane-ORD Chicago O'Hare Intl

46h 20m2 stops Melbourne Hong Kong Intl

16:00 - 10:50ORD Chicago O'Hare Intl-BNE Brisbane

27h 50m1 stop Hong Kong Intl

$2,334Cathay Pacific

Wed, 19 Aug - Wed, 26 Aug

12:20 - 23:26BNE Brisbane-ORD Chicago O'Hare Intl

26h 06m2 stops Auckland Intl Houston George Bush Intcntl

14:35 - 11:05ORD Chicago O'Hare Intl-BNE Brisbane

29h 30m2 stops San Francisco Auckland Intl

$2,417Air New Zealand

Wed, 19 Aug - Wed, 26 Aug

20:35 - 19:47BNE Brisbane-ORD Chicago O'Hare Intl

38h 12m1 stop Los Angeles Los Angeles

15:22 - 05:00ORD Chicago O'Hare Intl-BNE Brisbane

22h 38m1 stop Los Angeles Los Angeles

$2,534Qantas Airways

Wed, 19 Aug - Wed, 26 Aug

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 9/9

13:15-09:20

3 stops35h 05m

Chicago O'Hare Intl

Wed 16/9

06:00-11:50

3 stops38h 50m

$1,144

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

$1,168

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

16:57-18:00

2 stops32h 03m

$1,606

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

14:54-18:00

2 stops34h 06m

$1,606

Fastest return journey

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Thu 21/1

12:00-17:41

1 stop22h 41m

Lambert-St Louis

Thu 18/2

14:54-05:00

1 stop21h 06m

$1,647

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Sat 10/10

14:35-18:20

1 stop19h 45m

Lambert-St Louis

Mon 2/11

19:05-05:00

1 stop40h 55m

$1,678

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 18/11

11:50-18:05

1 stop23h 15m

Lambert-St Louis

Wed 2/12

16:17-07:00

1 stop21h 43m

$1,738

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 16/11

09:20-16:50

1 stop24h 30m

Lambert-St Louis

Wed 2/12

19:06-09:20

1 stop21h 14m

$1,738

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Thu 10/9

12:10-21:32

2 stops24h 22m

Chicago O'Hare Intl

Wed 16/9

16:00-10:55

2 stops27h 55m

$1,743

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Thu 10/9

12:10-23:27

2 stops26h 17m

Chicago O'Hare Intl

Wed 16/9

15:48-13:45

2 stops30h 57m

$1,743

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 34% 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	$694
Best Round-Trip Price	$1,144
Fastest flight time	20h 09m

The best one-way flight price to Illinois from Australia in the last 5 days is $694 (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 $1,144 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 20h 09m (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 $133/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $805/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, 34% 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.