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 24h 32m and 23h 33m, respectively.

$704 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

19 Oct

PER

33h 18m

2 stops

ORD

3 Nov

ORD

38h 10m

2 stops

PER

$1,612

Multiple Airlines

2 Nov

PER

34h 47m

2 stops

ORD

8 Nov

ORD

38h 10m

2 stops

PER

$1,638

Multiple Airlines

2 Nov

PER

34h 47m

2 stops

ORD

17 Nov

ORD

38h 10m

2 stops

PER

$1,641

Multiple Airlines

2 Nov

PER

34h 47m

2 stops

ORD

18 Nov

ORD

38h 10m

2 stops

PER

$1,670

Qantas Airways

28 Aug

SYD

24h 29m

2 stops

ORD

12 Sept

ORD

30h 55m

2 stops

SYD

$1,683

Cathay Pacific

20 Oct

MEL

29h 10m

1 stop

ORD

28 Oct

ORD

39h 25m

1 stop

MEL

$1,684

Cathay Pacific

10 Nov

SYD

31h 35m

1 stop

ORD

25 Nov

ORD

26h 00m

1 stop

SYD

$1,693

Cathay Pacific

2 Nov

SYD

31h 35m

1 stop

ORD

17 Nov

ORD

47h 40m

1 stop

SYD

$1,694

Air New Zealand

2 Nov

MEL

26h 26m

2 stops

ORD

17 Nov

ORD

29h 21m

2 stops

MEL

$1,740

Cathay Pacific

1 Nov

SYD

31h 35m

1 stop

ORD

18 Nov

ORD

26h 00m

1 stop

SYD

$1,741

Air New Zealand

2 Sept

MEL

29h 51m

2 stops

ORD

15 Sept

ORD

27h 25m

2 stops

MEL

$1,742

Air New Zealand

3 Nov

SYD

28h 54m

2 stops

ORD

17 Nov

ORD

27h 13m

2 stops

SYD

$1,742

Flights to Moline

Search all flight deals to Moline

United Airlines

8 Dec

BNE

40h 55m

2 stops

MLI

9 Jan

MLI

45h 48m

2 stops

BNE

$1,861

American Airlines

28 Oct

BNE

21h 19m

1 stop

MLI

1 Nov

MLI

46h 10m

2 stops

BNE

$1,887

American Airlines

28 Oct

BNE

21h 19m

1 stop

MLI

1 Nov

MLI

46h 10m

2 stops

BNE

$1,890

United Airlines

8 Dec

BNE

40h 55m

2 stops

MLI

5 Jan

MLI

54h 40m

2 stops

BNE

$2,195

United Airlines

12 Dec

BNE

51h 24m

2 stops

MLI

11 Jan

MLI

25h 04m

2 stops

BNE

$2,240

American Airlines

28 Oct

BNE

28h 32m

1 stop

MLI

1 Nov

MLI

21h 17m

1 stop

BNE

$2,468

Delta

9 Dec

BNE

39h 40m

2 stops

MLI

10 Jan

MLI

47h 30m

2 stops

BNE

$2,525

United Airlines

10 Dec

BNE

27h 24m

2 stops

MLI

10 Jan

MLI

25h 04m

2 stops

BNE

$2,529

United Airlines

9 Dec

BNE

49h 18m

2 stops

MLI

8 Jan

MLI

32h 45m

2 stops

BNE

$2,574

United Airlines

11 Dec

BNE

42h 11m

2 stops

MLI

8 Jan

MLI

25h 04m

2 stops

BNE

$2,619

American Airlines

8 Dec

BNE

29h 03m

1 stop

MLI

6 Jan

MLI

22h 32m

1 stop

BNE

$2,636

American Airlines

8 Dec

BNE

29h 03m

1 stop

MLI

5 Jan

MLI

44h 47m

2 stops

BNE

$2,642

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.

06:05 - 09:40SYD Sydney Kingsford Smith-STL Lambert-St Louis

43h 35m3 stops Nadi Los Angeles Los Angeles Atlanta Hartsfield-Jackson

10:35 - 12:50STL Lambert-St Louis-SYD Sydney Kingsford Smith

34h 15m3 stops Atlanta Hartsfield-Jackson Los Angeles Los Angeles Nadi

$1,335Multiple Airlines

Wed, 7 Oct - Wed, 21 Oct

10:10 - 21:41MEL Melbourne-STL Lambert-St Louis

28h 31m2 stops Los Angeles Los Angeles Salt Lake City

10:45 - 08:00STL Lambert-St Louis-MEL Melbourne

28h 15m2 stops Detroit Metropolitan Wayne County Los Angeles Los Angeles

$1,601Delta

Thu, 21 Jan - Wed, 3 Feb

10:10 - 23:46SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 36m1 stop Los Angeles Los Angeles

15:20 - 08:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 45m2 stops Dallas/Fort Worth Los Angeles Los Angeles

$1,670American Airlines

Wed, 7 Oct - Wed, 21 Oct

10:10 - 18:20SYD Sydney Kingsford Smith-STL Lambert-St Louis

24h 10m2 stops Los Angeles Los Angeles Dallas/Fort Worth

15:20 - 08:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 45m2 stops Dallas/Fort Worth Los Angeles Los Angeles

$1,670American Airlines

Wed, 7 Oct - Wed, 21 Oct

06:25 - 15:54SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

24h 29m2 stops Melbourne Los Angeles Los Angeles

17:50 - 15:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

30h 55m2 stops Los Angeles Los Angeles Melbourne

$1,683Qantas Airways

Fri, 28 Aug - Sat, 12 Sep

00:45 - 13:55MEL Melbourne-ORD Chicago O'Hare Intl

29h 10m1 stop Hong Kong Intl

15:35 - 23:00ORD Chicago O'Hare Intl-MEL Melbourne

39h 25m1 stop Hong Kong Intl

$1,685Cathay Pacific

Tue, 20 Oct - Wed, 28 Oct

15:15 - 12:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

38h 40m1 stop Hong Kong Intl

14:35 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 00m1 stop Hong Kong Intl

$1,693Cathay Pacific

Tue, 10 Nov - Tue, 24 Nov

10:10 - 23:46SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 36m1 stop Los Angeles Los Angeles

14:54 - 11:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

28h 01m2 stops Dallas/Fort Worth Brisbane

$1,706Qantas Airways

Wed, 21 Oct - Sat, 14 Nov

12:10 - 21:36MEL Melbourne-ORD Chicago O'Hare Intl

26h 26m2 stops Auckland Intl Houston George Bush Intcntl

10:34 - 08:55ORD Chicago O'Hare Intl-MEL Melbourne

29h 21m2 stops Houston George Bush Intcntl Auckland Intl

$1,740Air New Zealand

Mon, 2 Nov - Tue, 17 Nov

12:10 - 22:59MEL Melbourne-ORD Chicago O'Hare Intl

27h 49m2 stops Auckland Intl Los Angeles Los Angeles

14:22 - 08:55ORD Chicago O'Hare Intl-MEL Melbourne

25h 33m2 stops Houston George Bush Intcntl Auckland Intl

$1,740Air New Zealand

Tue, 3 Nov - Tue, 17 Nov

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

09:10 - 19:51SYD Sydney Kingsford Smith-STL Lambert-St Louis

25h 41m2 stops Los Angeles Los Angeles Dallas/Fort Worth

14:29 - 07:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

25h 36m2 stops Phoenix Sky Harbor Intl Los Angeles Los Angeles

$1,410American Airlines

Thu, 13 Aug - Sun, 23 Aug

09:10 - 17:37SYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 27m2 stops Los Angeles Los Angeles Phoenix Sky Harbor Intl

06:00 - 07:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

34h 05m1 stop Los Angeles Los Angeles

$1,410American Airlines

Tue, 11 Aug - Sun, 23 Aug

10:55 - 18:35MEL Melbourne-ORD Chicago O'Hare Intl

22h 40m1 stop San Francisco

10:27 - 10:35ORD Chicago O'Hare Intl-MEL Melbourne

33h 08m2 stops Los Angeles Los Angeles Sydney Kingsford Smith

$1,703United Airlines

Tue, 11 Aug - Mon, 7 Sep

10:55 - 22:46MEL Melbourne-ORD Chicago O'Hare Intl

26h 51m2 stops San Francisco Denver Intl

17:52 - 10:35ORD Chicago O'Hare Intl-MEL Melbourne

25h 43m2 stops Los Angeles Los Angeles Sydney Kingsford Smith

$1,703United Airlines

Tue, 11 Aug - Mon, 7 Sep

09:15 - 16:44SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 29m2 stops Los Angeles Los Angeles Minneapolis St Paul

17:34 - 06:50STL Lambert-St Louis-SYD Sydney Kingsford Smith

46h 16m2 stops Minneapolis St Paul Los Angeles Los Angeles

$1,709Delta

Tue, 11 Aug - Thu, 27 Aug

09:15 - 23:26SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 11m2 stops Los Angeles Los Angeles Minneapolis St Paul

17:34 - 06:50STL Lambert-St Louis-SYD Sydney Kingsford Smith

46h 16m2 stops Minneapolis St Paul Los Angeles Los Angeles

$1,709Delta

Wed, 12 Aug - Thu, 27 Aug

12:00 - 16:41SYD Sydney Kingsford Smith-STL Lambert-St Louis

19h 41m1 stop Dallas/Fort Worth

06:00 - 07:30STL Lambert-St Louis-SYD Sydney Kingsford Smith

34h 30m1 stop Los Angeles Los Angeles

$1,949Qantas Airways

Wed, 12 Aug - Sun, 16 Aug

20:45 - 20:24MEL Melbourne-STL Lambert-St Louis

38h 39m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

08:55 - 11:05STL Lambert-St Louis-MEL Melbourne

35h 10m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

$2,170Air Canada

Thu, 13 Aug - Mon, 17 Aug

06:00 - 14:04MEL Melbourne-STL Lambert-St Louis

47h 04m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

14:40 - 11:05STL Lambert-St Louis-MEL Melbourne

29h 25m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

$2,286Air Canada

Thu, 13 Aug - Mon, 17 Aug

12:00 - 19:42SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 42m1 stop Dallas/Fort Worth

22:35 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

41h 30m1 stop Los Angeles Los Angeles

$2,387Qantas Airways

Thu, 13 Aug - Sat, 15 Aug

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 7/10

06:05-09:40

3 stops43h 35m

Lambert-St Louis

Wed 21/10

10:35-12:50

3 stops34h 15m

$1,335

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Thu 21/1

10:10-21:41

2 stops28h 31m

Lambert-St Louis

Wed 3/2

10:45-08:00

2 stops28h 15m

$1,601

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 7/10

10:10-23:46

1 stop29h 36m

Lambert-St Louis

Wed 21/10

15:20-08:05

2 stops24h 45m

$1,670

Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 7/10

10:10-18:20

2 stops24h 10m

Lambert-St Louis

Wed 21/10

15:20-08:05

2 stops24h 45m

$1,670

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Fri 28/8

06:25-15:54

2 stops24h 29m

Chicago O'Hare Intl

Sat 12/9

17:50-15:45

2 stops30h 55m

$1,683

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Tue 20/10

00:45-13:55

1 stop29h 10m

Chicago O'Hare Intl

Wed 28/10

15:35-23:00

1 stop39h 25m

$1,684

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 10/11

15:15-12:55

1 stop38h 40m

Chicago O'Hare Intl

Tue 24/11

14:35-09:35

1 stop26h 00m

$1,693

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-23:46

1 stop29h 36m

Lambert-St Louis

Sat 14/11

14:54-11:55

2 stops28h 01m

$1,706

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Mon 2/11

12:10-21:36

2 stops26h 26m

Chicago O'Hare Intl

Tue 17/11

10:34-08:55

2 stops29h 21m

$1,740

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Tue 3/11

12:10-22:59

2 stops27h 49m

Chicago O'Hare Intl

Tue 17/11

14:22-08:55

2 stops25h 33m

$1,740

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	$704
Best Round-Trip Price	$1,335
Fastest flight time	28h 21m

The best one-way flight price to Illinois from Australia in the last 5 days is $704 (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 $1,335 (Sydney Kingsford Smith to Lambert-St Louis).

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The fastest flight to Illinois from Australia takes 28h 21m (Melbourne 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 $134/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $807/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.