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 19h 34m and 21h 04m, respectively.

$822 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

American Airlines

17 Mar

BNE

37h 24m

2 stops

ORD

1 Apr

ORD

26h 29m

1 stop

BNE

$1,299

American Airlines

17 Mar

BNE

37h 24m

2 stops

ORD

1 Apr

ORD

24h 29m

2 stops

BNE

$1,301

American Airlines

17 Mar

BNE

37h 24m

2 stops

ORD

1 Apr

ORD

27h 11m

2 stops

BNE

$1,305

Air Canada

15 Apr

BNE

19h 43m

1 stop

ORD

22 Apr

ORD

25h 30m

2 stops

BNE

$1,316

Air Canada

15 Apr

BNE

42h 05m

2 stops

ORD

22 Apr

ORD

31h 25m

2 stops

BNE

$1,323

Air Canada

11 Mar

SYD

20h 21m

1 stop

ORD

26 Mar

ORD

33h 20m

2 stops

SYD

$1,357

Air Canada

11 Mar

SYD

42h 41m

2 stops

ORD

26 Mar

ORD

26h 40m

2 stops

SYD

$1,380

Air Canada

11 Mar

SYD

20h 21m

1 stop

ORD

26 Mar

ORD

25h 00m

1 stop

SYD

$1,390

Air Canada

30 June

BNE

39h 16m

2 stops

ORD

30 Aug

ORD

24h 25m

1 stop

BNE

$1,402

Air Canada

30 June

BNE

36h 50m

2 stops

ORD

30 Aug

ORD

29h 00m

2 stops

BNE

$1,422

Air Canada

4 Mar

SYD

27h 44m

2 stops

ORD

9 Mar

ORD

26h 09m

2 stops

SYD

$1,422

Air Canada

10 July

BNE

39h 16m

2 stops

ORD

28 Aug

ORD

24h 25m

1 stop

BNE

$1,429

Flights to Moline

Search all flight deals to Moline

Emirates

5 Apr

BNE

39h 06m

2 stops

MLI

12 Apr

MLI

48h 05m

2 stops

BNE

$7,873

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.

12:00 - 21:07

MEL

STL

25h 07m

2 stops

06:51 - 09:00

STL

MEL

34h 09m

1 stop

$1,264United Airlines

Wed, 18 Mar - Sun, 22 Mar

19:40 - 18:04

BNE

ORD

37h 24m

2 stops

11:31 - 05:00

ORD

BNE

26h 29m

1 stop

$1,299American Airlines

Tue, 17 Mar - Wed, 1 Apr

19:40 - 18:04

BNE

ORD

37h 24m

2 stops

13:31 - 05:00

ORD

BNE

24h 29m

2 stops

$1,301American Airlines

Tue, 17 Mar - Wed, 1 Apr

19:40 - 18:04

BNE

ORD

37h 24m

2 stops

10:49 - 05:00

ORD

BNE

27h 11m

2 stops

$1,305American Airlines

Tue, 17 Mar - Wed, 1 Apr

10:00 - 14:43

BNE

ORD

19h 43m

1 stop

14:35 - 07:05

ORD

BNE

25h 30m

2 stops

$1,316Air Canada

Wed, 15 Apr - Wed, 22 Apr

10:00 - 13:05

BNE

ORD

42h 05m

2 stops

08:40 - 07:05

ORD

BNE

31h 25m

2 stops

$1,323Air Canada

Wed, 15 Apr - Wed, 22 Apr

12:00 - 21:35

MEL

ORD

25h 35m

1 stop

16:44 - 06:45

ORD

MEL

22h 01m

1 stop

$1,491Qantas Airways

Mon, 23 Mar - Wed, 1 Apr

19:40 - 23:47

BNE

ORD

19h 07m

1 stop

16:44 - 05:00

ORD

BNE

21h 16m

1 stop

$1,495Qantas Airways

Tue, 17 Mar - Wed, 1 Apr

10:30 - 13:45

PER

ORD

41h 15m

2 stops

18:40 - 22:55

ORD

PER

39h 15m

2 stops

$2,077Japan Airlines

Thu, 5 Mar - Mon, 9 Mar

06:25 - 12:55

ADL

ORD

47h 00m

2 stops

15:35 - 10:30

ORD

ADL

27h 25m

1 stop

$2,202Cathay Pacific

Thu, 5 Mar - Mon, 9 Mar

Fly from

Route

Depart

Return

Price

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 18/3

12:00-21:07

2 stops25h 07m

Lambert-St Louis

Sun 22/3

06:51-09:00

1 stop34h 09m

$1,264

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

19:40-18:04

2 stops37h 24m

Chicago O'Hare Intl

Wed 1/4

11:31-05:00

1 stop26h 29m

$1,299

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

19:40-18:04

2 stops37h 24m

Chicago O'Hare Intl

Wed 1/4

13:31-05:00

2 stops24h 29m

$1,301

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

19:40-18:04

2 stops37h 24m

Chicago O'Hare Intl

Wed 1/4

10:49-05:00

2 stops27h 11m

$1,305

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 15/4

10:00-14:43

1 stop19h 43m

Chicago O'Hare Intl

Wed 22/4

14:35-07:05

2 stops25h 30m

$1,316

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 15/4

10:00-13:05

2 stops42h 05m

Chicago O'Hare Intl

Wed 22/4

08:40-07:05

2 stops31h 25m

$1,323

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 23/3

12:00-21:35

1 stop25h 35m

Chicago O'Hare Intl

Wed 1/4

16:44-06:45

1 stop22h 01m

$1,491

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

19:40-23:47

1 stop19h 07m

Chicago O'Hare Intl

Wed 1/4

16:44-05:00

1 stop21h 16m

$1,495

PerthChicago

PER - ORD

PERORD

Perth

Thu 5/3

10:30-13:45

2 stops41h 15m

Chicago O'Hare Intl

Mon 9/3

18:40-22:55

2 stops39h 15m

$2,077

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 5/3

06:25-12:55

2 stops47h 00m

Chicago O'Hare Intl

Mon 9/3

15:35-10:30

1 stop27h 25m

$2,202

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 46% 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

Find flights to Chicago

Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$822
Best Round-Trip Price	$1,264
Fastest flight time	22h 26m

The best one-way flight price to Illinois from Australia in the last 72 hours is $822 (Melbourne to Lambert-St Louis).

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The best round-trip flight price to Illinois from Australia in the last 72 hours is $1,264 (Melbourne to Lambert-St Louis).

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The fastest flight to Illinois from Australia takes 22h 26m (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 $81/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $786/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, 46% 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 February 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.