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 05m and 22h 06m, respectively.

$850 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

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Multiple Airlines

12 Aug

SYD

39h 12m

2 stops

ORD

19 Aug

ORD

35h 30m

3 stops

SYD

$1,309

Qantas Airways

3 Aug

MEL

21h 09m

1 stop

ORD

12 Aug

ORD

22h 29m

1 stop

MEL

$1,316

Qantas Airways

8 Aug

MEL

22h 44m

1 stop

ORD

22 Aug

ORD

27h 53m

1 stop

MEL

$1,319

Qantas Airways

1 Aug

MEL

28h 45m

1 stop

ORD

27 Aug

ORD

42h 39m

1 stop

MEL

$1,322

Qantas Airways

13 Aug

MEL

22h 06m

1 stop

ORD

20 Aug

ORD

27h 53m

1 stop

MEL

$1,324

Qantas Airways

8 Aug

MEL

28h 15m

1 stop

ORD

22 Aug

ORD

22h 29m

1 stop

MEL

$1,328

American Airlines

27 July

MEL

30h 06m

2 stops

ORD

9 Aug

ORD

32h 45m

1 stop

MEL

$1,336

American Airlines

27 July

MEL

30h 06m

2 stops

ORD

9 Aug

ORD

32h 45m

1 stop

MEL

$1,341

United Airlines

3 Aug

MEL

26h 54m

2 stops

ORD

12 Aug

ORD

23h 45m

1 stop

MEL

$1,353

United Airlines

14 July

MEL

23h 10m

2 stops

ORD

29 July

ORD

24h 25m

2 stops

MEL

$1,355

United Airlines

7 July

MEL

23h 10m

2 stops

ORD

26 July

ORD

43h 40m

1 stop

MEL

$1,356

Multiple Airlines

3 Aug

SYD

36h 52m

3 stops

MDW

17 Aug

MDW

33h 44m

3 stops

SYD

$1,356

Flights to Moline

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American Airlines

5 Nov

BNE

49h 35m

2 stops

MLI

9 Nov

MLI

22h 55m

1 stop

BNE

$1,820

American Airlines

5 Nov

BNE

49h 35m

2 stops

MLI

9 Nov

MLI

22h 55m

1 stop

BNE

$1,823

American Airlines

5 Nov

BNE

30h 00m

2 stops

MLI

9 Nov

MLI

32h 21m

2 stops

BNE

$1,936

American Airlines

5 Nov

BNE

25h 35m

2 stops

MLI

9 Nov

MLI

32h 21m

2 stops

BNE

$1,939

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 - 06:17

SYD

ORD

39h 12m

2 stops

09:20 - 11:50

ORD

SYD

35h 30m

3 stops

$1,309Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

13:35 - 19:44

MEL

ORD

21h 09m

1 stop

17:16 - 06:45

ORD

MEL

22h 29m

1 stop

$1,316Qantas Airways

Mon, 3 Aug - Wed, 12 Aug

09:45 - 00:51

MEL

ORD

30h 06m

2 stops

07:00 - 06:45

ORD

MEL

32h 45m

1 stop

$1,336American Airlines

Mon, 27 Jul - Sun, 9 Aug

09:45 - 00:51

MEL

ORD

30h 06m

2 stops

07:00 - 06:45

ORD

MEL

32h 45m

1 stop

$1,341American Airlines

Mon, 27 Jul - Sun, 9 Aug

10:55 - 22:49

MEL

ORD

26h 54m

2 stops

16:45 - 07:30

ORD

MEL

23h 45m

1 stop

$1,353United Airlines

Mon, 3 Aug - Wed, 12 Aug

10:55 - 19:05

MEL

ORD

23h 10m

2 stops

16:05 - 07:30

ORD

MEL

24h 25m

2 stops

$1,355United Airlines

Tue, 14 Jul - Wed, 29 Jul

10:20 - 18:17

SYD

STL

22h 57m

1 stop

19:23 - 06:55

STL

SYD

20h 32m

1 stop

$1,532Air New Zealand

Mon, 20 Jul - Mon, 27 Jul

09:55 - 21:34

SYD

ORD

28h 39m

2 stops

13:00 - 10:30

ORD

SYD

28h 30m

2 stops

$1,559Air New Zealand

Wed, 11 Nov - Mon, 16 Nov

06:00 - 14:04

MEL

STL

47h 04m

3 stops

08:55 - 11:35

STL

MEL

35h 40m

3 stops

$1,720Air Canada

Wed, 5 Aug - Sun, 9 Aug

06:00 - 14:04

MEL

STL

47h 04m

3 stops

08:55 - 11:35

STL

MEL

35h 40m

3 stops

$1,722Air Canada

Wed, 5 Aug - Sun, 9 Aug

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 12/8

06:05-06:17

2 stops39h 12m

Chicago O'Hare Intl

Wed 19/8

09:20-11:50

3 stops35h 30m

$1,309

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 3/8

13:35-19:44

1 stop21h 09m

Chicago O'Hare Intl

Wed 12/8

17:16-06:45

1 stop22h 29m

$1,316

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 27/7

09:45-00:51

2 stops30h 06m

Chicago O'Hare Intl

Sun 9/8

07:00-06:45

1 stop32h 45m

$1,336

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 27/7

09:45-00:51

2 stops30h 06m

Chicago O'Hare Intl

Sun 9/8

07:00-06:45

1 stop32h 45m

$1,341

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 3/8

10:55-22:49

2 stops26h 54m

Chicago O'Hare Intl

Wed 12/8

16:45-07:30

1 stop23h 45m

$1,353

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Tue 14/7

10:55-19:05

2 stops23h 10m

Chicago O'Hare Intl

Wed 29/7

16:05-07:30

2 stops24h 25m

$1,355

Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/7

10:20-18:17

1 stop22h 57m

Lambert-St Louis

Mon 27/7

19:23-06:55

1 stop20h 32m

$1,532

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 11/11

09:55-21:34

2 stops28h 39m

Chicago O'Hare Intl

Mon 16/11

13:00-10:30

2 stops28h 30m

$1,559

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 5/8

06:00-14:04

3 stops47h 04m

Lambert-St Louis

Sun 9/8

08:55-11:35

3 stops35h 40m

$1,720

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 5/8

06:00-14:04

3 stops47h 04m

Lambert-St Louis

Sun 9/8

08:55-11:35

3 stops35h 40m

$1,722

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?

Air New Zealand, Qantas Airways and Air Canada are the top three most popular airlines that fly to Illinois from Australia according to our data. Air New Zealand is the first choice among our users, with 29% 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	$850
Best Round-Trip Price	$1,309
Fastest flight time	22h 29m

The best one-way flight price to Illinois from Australia in the last 5 days is $850 (Sydney Kingsford Smith to Lambert-St Louis).

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The best round-trip flight price to Illinois from Australia in the last 5 days is $1,309 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 22h 29m (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 $131/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $693/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 Air New Zealand, Qantas Airways and Air Canada happen to be the most popular among our users. In the past year, 29% of those who searched for flights to Illinois looked to travel with Air New Zealand, 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 9 as of June 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.