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 45m and 22h 45m, respectively.

$884 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

Qantas Airways

11 Aug

MEL

23h 02m

1 stop

ORD

20 Aug

ORD

22h 30m

1 stop

MEL

$1,307

Delta

24 July

MEL

27h 15m

2 stops

MDW

2 Aug

MDW

45h 52m

2 stops

MEL

$1,356

Delta

12 July

MEL

26h 52m

2 stops

ORD

27 July

ORD

31h 58m

2 stops

MEL

$1,356

Delta

15 July

MEL

22h 35m

1 stop

ORD

29 July

ORD

32h 23m

2 stops

MEL

$1,357

Delta

17 July

MEL

23h 25m

2 stops

MDW

13 Aug

MDW

46h 08m

2 stops

MEL

$1,363

Delta

8 July

MEL

23h 57m

2 stops

ORD

29 July

ORD

24h 55m

2 stops

MEL

$1,363

Qantas Airways

11 Aug

MEL

26h 48m

2 stops

ORD

20 Aug

ORD

22h 30m

1 stop

MEL

$1,374

Delta

8 Sept

SYD

19h 45m

1 stop

ORD

22 Sept

ORD

24h 55m

1 stop

SYD

$1,381

Delta

8 Sept

SYD

23h 15m

1 stop

ORD

22 Sept

ORD

25h 55m

2 stops

SYD

$1,386

American Airlines

30 Aug

SYD

37h 04m

1 stop

ORD

1 Sept

ORD

24h 05m

1 stop

SYD

$1,400

American Airlines

29 Oct

SYD

34h 46m

1 stop

ORD

1 Nov

ORD

28h 35m

1 stop

SYD

$1,435

American Airlines

15 Sept

SYD

20h 10m

1 stop

ORD

12 Oct

ORD

20h 53m

1 stop

SYD

$1,441

Flights to Moline

Search all flight deals to Moline

Multiple Airlines

27 June

BNE

45h 00m

2 stops

MLI

5 July

MLI

37h 42m

2 stops

BNE

$3,399

Multiple Airlines

27 June

BNE

42h 50m

3 stops

MLI

5 July

MLI

37h 42m

2 stops

BNE

$3,450

Multiple Airlines

27 June

BNE

42h 50m

3 stops

MLI

5 July

MLI

37h 57m

3 stops

BNE

$3,540

Multiple Airlines

27 June

BNE

25h 12m

2 stops

MLI

3 July

MLI

31h 22m

3 stops

BNE

$3,798

Multiple Airlines

27 June

BNE

30h 26m

3 stops

MLI

3 July

MLI

31h 22m

3 stops

BNE

$4,096

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.

09:45 - 17:47

MEL

ORD

23h 02m

1 stop

17:15 - 06:45

ORD

MEL

22h 30m

1 stop

$1,307Qantas Airways

Tue, 11 Aug - Thu, 20 Aug

10:00 - 22:15

MEL

MDW

27h 15m

2 stops

18:58 - 07:50

MDW

MEL

45h 52m

2 stops

$1,356Delta

Fri, 24 Jul - Sun, 2 Aug

10:00 - 21:52

MEL

ORD

26h 52m

2 stops

08:52 - 07:50

ORD

MEL

31h 58m

2 stops

$1,356Delta

Sun, 12 Jul - Mon, 27 Jul

17:50 - 15:54

SYD

ORD

37h 04m

1 stop

15:20 - 06:25

ORD

SYD

24h 05m

1 stop

$1,400American Airlines

Sun, 30 Aug - Tue, 1 Sep

09:30 - 18:13

SYD

STL

23h 43m

2 stops

05:10 - 06:55

STL

SYD

34h 45m

2 stops

$1,435United Airlines

Wed, 8 Jul - Mon, 20 Jul

11:15 - 06:01

SYD

ORD

34h 46m

1 stop

08:35 - 06:10

ORD

SYD

28h 35m

1 stop

$1,435American Airlines

Thu, 29 Oct - Sun, 1 Nov

09:20 - 18:42

SYD

STL

48h 22m

2 stops

08:55 - 07:20

STL

SYD

31h 25m

2 stops

$1,459Air Canada

Mon, 10 Aug - Fri, 4 Sep

09:30 - 23:29

SYD

STL

28h 59m

2 stops

19:23 - 06:55

STL

SYD

20h 32m

1 stop

$1,505United Airlines

Fri, 12 Jun - Sun, 5 Jul

09:20 - 12:06

SYD

STL

41h 46m

2 stops

08:55 - 07:20

STL

SYD

31h 25m

2 stops

$1,785Air Canada

Fri, 12 Jun - Sun, 5 Jul

00:40 - 13:55

BNE

ORD

28h 15m

1 stop

14:35 - 23:10

ORD

BNE

40h 35m

1 stop

$1,992Cathay Pacific

Mon, 26 Oct - Tue, 10 Nov

Fly from

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Tue 11/8

09:45-17:47

1 stop23h 02m

Chicago O'Hare Intl

Thu 20/8

17:15-06:45

1 stop22h 30m

$1,307

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Fri 24/7

10:00-22:15

2 stops27h 15m

Chicago Midway

Sun 2/8

18:58-07:50

2 stops45h 52m

$1,356

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 12/7

10:00-21:52

2 stops26h 52m

Chicago O'Hare Intl

Mon 27/7

08:52-07:50

2 stops31h 58m

$1,356

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 30/8

17:50-15:54

1 stop37h 04m

Chicago O'Hare Intl

Tue 1/9

15:20-06:25

1 stop24h 05m

$1,400

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 8/7

09:30-18:13

2 stops23h 43m

Lambert-St Louis

Mon 20/7

05:10-06:55

2 stops34h 45m

$1,435

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 29/10

11:15-06:01

1 stop34h 46m

Chicago O'Hare Intl

Sun 1/11

08:35-06:10

1 stop28h 35m

$1,435

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

09:20-18:42

2 stops48h 22m

Lambert-St Louis

Fri 4/9

08:55-07:20

2 stops31h 25m

$1,459

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 12/6

09:30-23:29

2 stops28h 59m

Lambert-St Louis

Sun 5/7

19:23-06:55

1 stop20h 32m

$1,505

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 12/6

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Sun 5/7

08:55-07:20

2 stops31h 25m

$1,785

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Mon 26/10

00:40-13:55

1 stop28h 15m

Chicago O'Hare Intl

Tue 10/11

14:35-23:10

1 stop40h 35m

$1,992

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 Air New Zealand 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 30% 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	$886
Best Round-Trip Price	$1,307
Fastest flight time	20h 26m

The best one-way flight price to Illinois from Australia in the last 5 days is $886 (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 $1,307 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 20h 26m (Sydney Kingsford Smith to Chicago Midway).

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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 $128/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $737/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 Air New Zealand happen to be the most popular among our users. In the past year, 30% 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 May 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.