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 52m and 20h 43m, respectively.

$991 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

18 Apr

BNE

26h 32m

2 stops

ORD

25 Apr

ORD

35h 40m

2 stops

BNE

$1,253

Multiple Airlines

2 May

MEL

31h 05m

2 stops

ORD

9 May

ORD

30h 00m

2 stops

MEL

$1,257

Multiple Airlines

13 May

MEL

23h 39m

2 stops

ORD

16 May

ORD

30h 00m

2 stops

MEL

$1,266

Multiple Airlines

3 May

MEL

31h 05m

2 stops

ORD

10 May

ORD

40h 10m

2 stops

MEL

$1,270

Multiple Airlines

2 May

MEL

24h 57m

2 stops

ORD

9 May

ORD

37h 00m

2 stops

MEL

$1,273

Air Canada

21 Apr

SYD

20h 25m

1 stop

ORD

28 Apr

ORD

33h 07m

2 stops

SYD

$1,277

Air Canada

21 Apr

SYD

20h 25m

1 stop

ORD

28 Apr

ORD

24h 40m

1 stop

SYD

$1,278

Air Canada

16 Apr

SYD

20h 25m

1 stop

ORD

29 Apr

ORD

31h 40m

2 stops

SYD

$1,280

Multiple Airlines

1 May

BNE

26h 52m

2 stops

ORD

6 May

ORD

36h 05m

2 stops

BNE

$1,281

Air Canada

21 Apr

SYD

25h 45m

2 stops

ORD

28 Apr

ORD

33h 07m

2 stops

SYD

$1,281

Air Canada

5 May

SYD

44h 33m

2 stops

ORD

12 May

ORD

24h 40m

1 stop

SYD

$1,283

Air Canada

16 Apr

SYD

25h 45m

2 stops

ORD

23 Apr

ORD

31h 40m

2 stops

SYD

$1,284

Flights to Moline

Search all flight deals to Moline

American Airlines

3 June

BNE

29h 02m

2 stops

MLI

7 June

MLI

43h 09m

2 stops

BNE

$1,663

American Airlines

3 June

BNE

34h 24m

2 stops

MLI

7 June

MLI

43h 09m

2 stops

BNE

$1,666

American Airlines

3 June

BNE

29h 02m

2 stops

MLI

7 June

MLI

43h 09m

2 stops

BNE

$1,670

Find the cheapest flights from Australia to Illinois

Round-trip

One-way

Last minute

Recent return flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

11:55 - 23:27

BNE

ORD

26h 32m

2 stops

08:00 - 10:40

ORD

BNE

35h 40m

2 stops

$1,253Multiple Airlines

Sat, 18 Apr - Sat, 25 Apr

13:30 - 05:35

MEL

ORD

31h 05m

2 stops

15:00 - 12:00

ORD

MEL

30h 00m

2 stops

$1,257Multiple Airlines

Sat, 2 May - Sat, 9 May

09:20 - 14:45

SYD

ORD

20h 25m

1 stop

07:13 - 07:20

ORD

SYD

33h 07m

2 stops

$1,277Air Canada

Tue, 21 Apr - Tue, 28 Apr

09:20 - 14:45

SYD

ORD

20h 25m

1 stop

15:40 - 07:20

ORD

SYD

24h 40m

1 stop

$1,278Air Canada

Tue, 21 Apr - Tue, 28 Apr

13:35 - 19:30

MEL

STL

20h 55m

1 stop

06:21 - 06:45

STL

MEL

33h 24m

1 stop

$1,452Qantas Airways

Mon, 4 May - Mon, 11 May

09:45 - 23:57

MEL

STL

29h 12m

1 stop

06:21 - 06:45

STL

MEL

33h 24m

1 stop

$1,461Qantas Airways

Sun, 3 May - Sun, 10 May

09:45 - 23:57

MEL

STL

29h 12m

1 stop

12:27 - 05:00

STL

MEL

25h 33m

2 stops

$1,485American Airlines

Mon, 4 May - Mon, 11 May

09:45 - 23:59

MEL

STL

29h 14m

1 stop

15:33 - 06:45

STL

MEL

24h 12m

2 stops

$1,503American Airlines

Fri, 31 Jul - Sun, 6 Sep

10:00 - 17:26

MEL

STL

22h 26m

2 stops

19:01 - 07:50

STL

MEL

45h 49m

2 stops

$1,519Delta

Sun, 3 May - Sun, 10 May

09:15 - 17:58

SYD

MDW

23h 43m

2 stops

10:41 - 06:50

MDW

SYD

29h 09m

2 stops

$1,663Delta

Tue, 21 Apr - Tue, 28 Apr

Fly from

Route

Depart

Return

Price

Cheapest return flight

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Sat 18/4

11:55-23:27

2 stops26h 32m

Chicago O'Hare Intl

Sat 25/4

08:00-10:40

2 stops35h 40m

$1,253

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 2/5

13:30-05:35

2 stops31h 05m

Chicago O'Hare Intl

Sat 9/5

15:00-12:00

2 stops30h 00m

$1,257

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 21/4

09:20-14:45

1 stop20h 25m

Chicago O'Hare Intl

Tue 28/4

07:13-07:20

2 stops33h 07m

$1,277

Fastest return journey

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 21/4

09:20-14:45

1 stop20h 25m

Chicago O'Hare Intl

Tue 28/4

15:40-07:20

1 stop24h 40m

$1,278

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 4/5

13:35-19:30

1 stop20h 55m

Lambert-St Louis

Mon 11/5

06:21-06:45

1 stop33h 24m

$1,452

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sun 3/5

09:45-23:57

1 stop29h 12m

Lambert-St Louis

Sun 10/5

06:21-06:45

1 stop33h 24m

$1,461

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 4/5

09:45-23:57

1 stop29h 12m

Lambert-St Louis

Mon 11/5

12:27-05:00

2 stops25h 33m

$1,485

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 31/7

09:45-23:59

1 stop29h 14m

Lambert-St Louis

Sun 6/9

15:33-06:45

2 stops24h 12m

$1,503

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sun 3/5

10:00-17:26

2 stops22h 26m

Lambert-St Louis

Sun 10/5

19:01-07:50

2 stops45h 49m

$1,519

SydneyChicago

SYD - MDW

SYDMDW

Sydney Kingsford Smith

Tue 21/4

09:15-17:58

2 stops23h 43m

Chicago Midway

Tue 28/4

10:41-06:50

2 stops29h 09m

$1,663

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, Air Canada and United Airlines 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 9 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

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Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$796
Best Round-Trip Price	$1,253
Fastest flight time	24h 52m

The best one-way flight price to Illinois from Australia in the last 72 hours is $796 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The best round-trip flight price to Illinois from Australia in the last 72 hours is $1,253 (Brisbane to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 24h 52m (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 $82/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $836/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 Riverwalk 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 9 airlines that fly to Illinois on a routine basis, but Qantas Airways, Air Canada and United Airlines 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 10 as of March 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.