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 18m and 23h 26m, respectively.

$780 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

42h 45m

2 stops

ORD

1 Apr

ORD

26h 03m

2 stops

BNE

$1,214

Air Canada

16 Apr

BNE

19h 43m

1 stop

ORD

24 Apr

ORD

31h 25m

2 stops

BNE

$1,342

Air Canada

16 Apr

BNE

22h 50m

2 stops

ORD

24 Apr

ORD

31h 25m

2 stops

BNE

$1,345

Air Canada

13 Apr

BNE

34h 40m

2 stops

ORD

20 Apr

ORD

24h 25m

1 stop

BNE

$1,359

Air Canada

13 Apr

BNE

33h 00m

2 stops

ORD

20 Apr

ORD

31h 25m

2 stops

BNE

$1,369

Qantas Airways

24 Mar

MEL

22h 40m

1 stop

ORD

31 Mar

ORD

24h 05m

1 stop

MEL

$1,369

Air Canada

21 May

BNE

36h 45m

2 stops

ORD

2 June

ORD

24h 25m

1 stop

BNE

$1,372

Air Canada

19 May

BNE

34h 25m

2 stops

ORD

2 June

ORD

31h 20m

2 stops

BNE

$1,373

Air Canada

19 May

BNE

21h 35m

2 stops

ORD

1 June

ORD

31h 20m

2 stops

BNE

$1,376

Air Canada

21 May

BNE

36h 45m

2 stops

ORD

2 June

ORD

29h 11m

2 stops

BNE

$1,377

Air Canada

16 Apr

BNE

21h 20m

2 stops

ORD

24 Apr

ORD

30h 30m

3 stops

BNE

$1,379

Air Canada

18 May

BNE

34h 25m

2 stops

ORD

2 June

ORD

27h 10m

2 stops

BNE

$1,380

Flights to Moline

Search all flight deals to Moline

Cathay Pacific

16 Apr

BNE

44h 47m

2 stops

MLI

18 Apr

MLI

60h 49m

2 stops

BNE

$2,596

United Airlines

15 Apr

BNE

25h 37m

2 stops

MLI

18 Apr

MLI

48h 10m

2 stops

BNE

$2,716

Multiple Airlines

16 Apr

BNE

44h 14m

3 stops

MLI

18 Apr

MLI

39h 42m

2 stops

BNE

$2,892

Multiple Airlines

16 Apr

BNE

44h 14m

3 stops

MLI

18 Apr

MLI

42h 14m

3 stops

BNE

$2,919

Multiple Airlines

15 Apr

BNE

44h 14m

3 stops

MLI

18 Apr

MLI

43h 26m

2 stops

BNE

$3,100

Multiple Airlines

15 Apr

BNE

44h 14m

3 stops

MLI

18 Apr

MLI

37h 09m

3 stops

BNE

$3,127

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.

19:40 - 08:51

BNE

STL

28h 11m

2 stops

14:31 - 05:00

STL

BNE

47h 29m

2 stops

$1,099American Airlines

Thu, 12 Mar - Mon, 16 Mar

19:40 - 23:58

BNE

STL

19h 18m

1 stop

18:50 - 05:30

STL

BNE

19h 40m

1 stop

$1,100American Airlines

Thu, 12 Mar - Mon, 16 Mar

10:30 - 18:00

MEL

STL

23h 30m

2 stops

14:50 - 08:30

STL

MEL

25h 40m

2 stops

$1,254United Airlines

Wed, 18 Mar - Sun, 22 Mar

12:00 - 23:34

MEL

STL

27h 34m

2 stops

08:17 - 09:00

STL

MEL

32h 43m

2 stops

$1,255United Airlines

Wed, 18 Mar - Sun, 22 Mar

10:00 - 14:43

BNE

ORD

19h 43m

1 stop

08:40 - 07:05

ORD

BNE

31h 25m

2 stops

$1,342Air Canada

Thu, 16 Apr - Fri, 24 Apr

10:00 - 17:50

BNE

ORD

22h 50m

2 stops

08:40 - 07:05

ORD

BNE

31h 25m

2 stops

$1,345Air Canada

Thu, 16 Apr - Fri, 24 Apr

12:00 - 18:40

MEL

ORD

22h 40m

1 stop

14:40 - 06:45

ORD

MEL

24h 05m

1 stop

$1,369Qantas Airways

Tue, 24 Mar - Tue, 31 Mar

12:00 - 21:35

MEL

ORD

25h 35m

1 stop

16:44 - 06:45

ORD

MEL

22h 01m

1 stop

$1,384Qantas Airways

Mon, 23 Mar - Wed, 1 Apr

09:55 - 20:23

SYD

ORD

26h 28m

2 stops

14:35 - 10:15

ORD

SYD

27h 40m

2 stops

$1,563Air New Zealand

Tue, 10 Mar - Tue, 17 Mar

00:25 - 00:45

PER

ORD

37h 20m

2 stops

14:13 - 22:15

ORD

PER

43h 02m

2 stops

$1,994Air New Zealand

Wed, 15 Jul - Thu, 13 Aug

Fly from

Route

Depart

Return

Price

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Thu 12/3

19:40-08:51

2 stops28h 11m

Lambert-St Louis

Mon 16/3

14:31-05:00

2 stops47h 29m

$1,099

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Thu 12/3

19:40-23:58

1 stop19h 18m

Lambert-St Louis

Mon 16/3

18:50-05:30

1 stop19h 40m

$1,100

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 18/3

10:30-18:00

2 stops23h 30m

Lambert-St Louis

Sun 22/3

14:50-08:30

2 stops25h 40m

$1,254

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 18/3

12:00-23:34

2 stops27h 34m

Lambert-St Louis

Sun 22/3

08:17-09:00

2 stops32h 43m

$1,255

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 16/4

10:00-14:43

1 stop19h 43m

Chicago O'Hare Intl

Fri 24/4

08:40-07:05

2 stops31h 25m

$1,342

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 16/4

10:00-17:50

2 stops22h 50m

Chicago O'Hare Intl

Fri 24/4

08:40-07:05

2 stops31h 25m

$1,345

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Tue 24/3

12:00-18:40

1 stop22h 40m

Chicago O'Hare Intl

Tue 31/3

14:40-06:45

1 stop24h 05m

$1,369

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

$1,384

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 10/3

09:55-20:23

2 stops26h 28m

Chicago O'Hare Intl

Tue 17/3

14:35-10:15

2 stops27h 40m

$1,563

PerthChicago

PER - ORD

PERORD

Perth

Wed 15/7

00:25-00:45

2 stops37h 20m

Chicago O'Hare Intl

Thu 13/8

14:13-22:15

2 stops43h 02m

$1,994

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	$780
Best Round-Trip Price	$1,099
Fastest flight time	21h 06m

The best one-way flight price to Illinois from Australia in the last 72 hours is $780 (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 $1,099 (Brisbane to Lambert-St Louis).

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The fastest flight to Illinois from Australia takes 21h 06m (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 $783/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.