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 44m and 28h 02m, respectively.

$861 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 Oct

SYD

52h 57m

3 stops

ORD

21 Oct

ORD

38h 20m

3 stops

SYD

$1,318

Qantas Airways

27 Sept

SYD

22h 35m

1 stop

ORD

28 Sept

ORD

31h 42m

1 stop

SYD

$1,386

Multiple Airlines

22 Sept

SYD

30h 13m

2 stops

ORD

29 Sept

ORD

34h 05m

2 stops

SYD

$1,469

Multiple Airlines

8 Oct

SYD

29h 33m

2 stops

MDW

21 Oct

MDW

33h 50m

2 stops

SYD

$1,484

Multiple Airlines

16 Oct

MEL

30h 56m

3 stops

ORD

26 Oct

ORD

38h 15m

3 stops

MEL

$1,508

Philippine Airlines

2 Feb

SYD

46h 25m

1 stop

ORD

10 Mar

ORD

42h 05m

1 stop

SYD

$1,508

Multiple Airlines

22 Oct

MEL

44h 42m

3 stops

ORD

28 Oct

ORD

37h 10m

3 stops

MEL

$1,519

Multiple Airlines

14 Oct

SYD

29h 33m

2 stops

MDW

30 Oct

MDW

34h 44m

2 stops

SYD

$1,519

Multiple Airlines

8 Oct

BNE

32h 26m

3 stops

ORD

21 Oct

ORD

37h 35m

3 stops

BNE

$1,555

Multiple Airlines

11 Oct

MEL

30h 46m

3 stops

ORD

31 Oct

ORD

37h 50m

3 stops

MEL

$1,594

Multiple Airlines

27 Sept

SYD

33h 45m

3 stops

ORD

28 Sept

ORD

34h 24m

3 stops

SYD

$1,627

Multiple Airlines

8 Oct

SYD

26h 26m

2 stops

ORD

21 Oct

ORD

34h 05m

2 stops

SYD

$1,649

Flights to Moline

Search all flight deals to Moline

American Airlines

11 Nov

BNE

37h 49m

2 stops

MLI

15 Nov

MLI

26h 17m

2 stops

BNE

$1,828

American Airlines

11 Nov

BNE

26h 07m

2 stops

MLI

15 Nov

MLI

31h 50m

2 stops

BNE

$1,832

American Airlines

11 Nov

BNE

26h 56m

2 stops

MLI

15 Nov

MLI

26h 27m

2 stops

BNE

$1,878

United Airlines

7 Dec

BNE

38h 35m

2 stops

MLI

5 Jan

MLI

54h 40m

2 stops

BNE

$2,548

United Airlines

7 Dec

BNE

27h 37m

2 stops

MLI

6 Jan

MLI

30h 40m

2 stops

BNE

$2,609

United Airlines

10 Dec

BNE

51h 37m

2 stops

MLI

4 Jan

MLI

47h 47m

2 stops

BNE

$2,610

United Airlines

7 Dec

BNE

27h 37m

2 stops

MLI

7 Jan

MLI

25h 04m

2 stops

BNE

$2,622

United Airlines

11 Dec

BNE

27h 37m

2 stops

MLI

5 Jan

MLI

54h 40m

2 stops

BNE

$2,623

United Airlines

10 Dec

BNE

46h 40m

2 stops

MLI

6 Jan

MLI

30h 40m

2 stops

BNE

$2,669

United Airlines

10 Dec

BNE

46h 40m

2 stops

MLI

6 Jan

MLI

30h 40m

2 stops

BNE

$2,687

United Airlines

10 Dec

BNE

49h 43m

2 stops

MLI

6 Jan

MLI

32h 45m

2 stops

BNE

$2,701

American Airlines

8 Dec

BNE

30h 08m

1 stop

MLI

4 Jan

MLI

46h 02m

2 stops

BNE

$2,764

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 - 19:02SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

52h 57m3 stops Nadi Los Angeles Orlando

06:30 - 12:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

38h 20m3 stops Denver Intl Los Angeles Nadi

$1,318Multiple Airlines

Thu, 8 Oct - Wed, 21 Oct

11:15 - 23:45SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 30m1 stop Los Angeles

08:29 - 06:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

29h 26m1 stop Dallas/Fort Worth

$1,372American Airlines

Tue, 17 Nov - Tue, 1 Dec

21:25 - 05:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 35m1 stop San Francisco

08:23 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 42m1 stop Los Angeles

$1,386Qantas Airways

Sun, 27 Sep - Mon, 28 Sep

11:15 - 23:45SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 30m1 stop Los Angeles

13:20 - 06:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 35m2 stops Chicago O'Hare Intl Dallas/Fort Worth

$1,403American Airlines

Tue, 17 Nov - Tue, 1 Dec

09:10 - 00:23SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 13m2 stops Los Angeles Denver Intl

06:00 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 05m2 stops Dallas/Fort Worth Los Angeles

$1,469Multiple Airlines

Tue, 22 Sep - Tue, 29 Sep

11:50 - 22:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 10m2 stops Auckland Intl Los Angeles

10:34 - 10:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 01m2 stops Houston George Bush Intcntl Auckland Intl

$1,726Air New Zealand

Wed, 4 Nov - Mon, 9 Nov

11:50 - 16:57SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 07m2 stops San Francisco Denver Intl

13:15 - 09:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 50m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Los Angeles

$1,750United Airlines

Tue, 17 Nov - Tue, 1 Dec

11:55 - 21:31SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 36m2 stops Auckland Intl Los Angeles

15:47 - 18:15ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 28m2 stops Los Angeles Auckland Intl

$1,752Air New Zealand

Wed, 14 Oct - Wed, 28 Oct

11:50 - 16:57SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 07m2 stops San Francisco Denver Intl

13:15 - 09:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 50m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Los Angeles

$1,754United Airlines

Tue, 17 Nov - Tue, 1 Dec

09:10 - 20:52SYD Sydney Kingsford Smith-STL Lambert-St Louis

26h 42m2 stops Los Angeles Phoenix Sky Harbor Intl

11:01 - 07:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

29h 04m2 stops Chicago O'Hare Intl Los Angeles

$1,768Qantas Airways

Wed, 23 Sep - Wed, 30 Sep

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

10:55 - 19:30MEL Melbourne-ORD Chicago O'Hare Intl

23h 35m2 stops San Francisco Denver Intl

15:48 - 08:15ORD Chicago O'Hare Intl-MEL Melbourne

25h 27m2 stops Los Angeles San Francisco

$1,372United Airlines

Thu, 27 Aug - Fri, 4 Sep

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

23h 05m2 stops San Francisco Los Angeles

16:00 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne

24h 30m2 stops San Francisco Los Angeles

$1,372United Airlines

Fri, 28 Aug - Fri, 4 Sep

09:30 - 14:36MEL Melbourne-ORD Chicago O'Hare Intl

20h 06m1 stop Los Angeles

16:30 - 08:15ORD Chicago O'Hare Intl-MEL Melbourne

24h 45m1 stop San Francisco

$1,393Multiple Airlines

Fri, 28 Aug - Fri, 11 Sep

06:50 - 20:40MEL Melbourne-ORD Chicago O'Hare Intl

28h 50m2 stops Brisbane San Francisco

07:40 - 08:15ORD Chicago O'Hare Intl-MEL Melbourne

33h 35m1 stop San Francisco

$1,696Virgin Australia

Fri, 28 Aug - Fri, 11 Sep

12:20 - 07:55BNE Brisbane-ORD Chicago O'Hare Intl

34h 35m2 stops Auckland Intl Houston George Bush Intcntl

16:11 - 18:25ORD Chicago O'Hare Intl-BNE Brisbane

35h 14m2 stops Houston George Bush Intcntl Auckland Intl

$1,940Air New Zealand

Thu, 27 Aug - Mon, 31 Aug

12:00 - 18:29SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 29m1 stop Dallas/Fort Worth

08:23 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 42m1 stop Los Angeles

$1,983Qantas Airways

Fri, 28 Aug - Sun, 13 Sep

09:45 - 05:24MEL Melbourne-ORD Chicago O'Hare Intl

34h 39m2 stops Los Angeles Phoenix Sky Harbor Intl

13:50 - 05:00ORD Chicago O'Hare Intl-MEL Melbourne

24h 10m1 stop Dallas/Fort Worth

$2,029American Airlines

Thu, 27 Aug - Wed, 2 Sep

09:45 - 05:24MEL Melbourne-ORD Chicago O'Hare Intl

34h 39m2 stops Los Angeles Phoenix Sky Harbor Intl

19:00 - 10:20ORD Chicago O'Hare Intl-MEL Melbourne

24h 20m2 stops Los Angeles Sydney Kingsford Smith

$2,071American Airlines

Thu, 27 Aug - Wed, 2 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

$2,919Qantas Airways

Mon, 31 Aug - Mon, 7 Jun

12:10 - 23:26MEL Melbourne-ORD Chicago O'Hare Intl

26h 16m2 stops Auckland Intl Houston George Bush Intcntl

16:11 - 10:55ORD Chicago O'Hare Intl-MEL Melbourne

27h 44m2 stops Houston George Bush Intcntl Auckland Intl

$3,692Air New Zealand

Thu, 27 Aug - Thu, 3 Sep

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 8/10

06:05-19:02

3 stops52h 57m

Chicago O'Hare Intl

Wed 21/10

06:30-12:50

3 stops38h 20m

$1,318

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 17/11

11:15-23:45

1 stop29h 30m

Lambert-St Louis

Tue 1/12

08:29-06:55

1 stop29h 26m

$1,372

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sun 27/9

21:25-05:00

1 stop22h 35m

Chicago O'Hare Intl

Mon 28/9

08:23-07:05

1 stop31h 42m

$1,386

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 17/11

11:15-23:45

1 stop29h 30m

Lambert-St Louis

Tue 1/12

13:20-06:55

2 stops24h 35m

$1,403

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 22/9

09:10-00:23

2 stops30h 13m

Chicago O'Hare Intl

Tue 29/9

06:00-07:05

2 stops34h 05m

$1,469

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 4/11

11:50-22:00

2 stops27h 10m

Chicago O'Hare Intl

Mon 9/11

10:34-10:35

2 stops31h 01m

$1,726

Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 17/11

11:50-16:57

2 stops22h 07m

Lambert-St Louis

Tue 1/12

13:15-09:05

3 stops26h 50m

$1,750

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Wed 14/10

11:55-21:31

2 stops25h 36m

Chicago O'Hare Intl

Wed 28/10

15:47-18:15

2 stops34h 28m

$1,752

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 17/11

11:50-16:57

2 stops22h 07m

Lambert-St Louis

Tue 1/12

13:15-09:05

3 stops26h 50m

$1,754

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 23/9

09:10-20:52

2 stops26h 42m

Lambert-St Louis

Wed 30/9

11:01-07:05

2 stops29h 04m

$1,768

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 35% 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	$861
Best Round-Trip Price	$1,318
Fastest flight time	24h 35m

The best one-way flight price to Illinois from Australia in the last 5 days is $861 (Melbourne to Lambert-St Louis).

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The best return flight price to Illinois from Australia in the last 5 days is $1,318 (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 $654/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 Millennium Park 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, 35% 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.