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 28h 51m and 20h 05m, respectively.

$821 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

$1,293

Qantas Airways

7 Aug

MEL

22h 06m

1 stop

ORD

21 Aug

ORD

22h 29m

1 stop

MEL

$1,310

Qantas Airways

15 Aug

MEL

21h 09m

1 stop

ORD

22 Aug

ORD

22h 06m

1 stop

MEL

$1,316

Qantas Airways

3 Aug

MEL

21h 14m

1 stop

ORD

13 Aug

ORD

24h 23m

1 stop

MEL

$1,317

Qantas Airways

28 July

MEL

22h 05m

1 stop

ORD

4 Aug

ORD

43h 32m

1 stop

MEL

$1,322

Qantas Airways

9 Aug

MEL

28h 45m

1 stop

ORD

22 Aug

ORD

42h 39m

1 stop

MEL

$1,326

Multiple Airlines

3 Aug

SYD

36h 52m

3 stops

MDW

19 Aug

MDW

38h 45m

3 stops

SYD

$1,327

Multiple Airlines

27 July

MEL

23h 27m

1 stop

ORD

30 Sept

ORD

24h 25m

1 stop

MEL

$1,330

American Airlines

1 Aug

MEL

21h 15m

1 stop

ORD

8 Aug

ORD

22h 29m

1 stop

MEL

$1,332

American Airlines

29 July

MEL

21h 14m

1 stop

ORD

26 Aug

ORD

23h 03m

1 stop

MEL

$1,333

American Airlines

12 July

MEL

36h 21m

1 stop

ORD

26 July

ORD

33h 45m

1 stop

MEL

$1,335

American Airlines

27 July

MEL

28h 45m

2 stops

ORD

10 Aug

ORD

30h 45m

1 stop

MEL

$1,336

Find the cheapest flights from Australia to Illinois

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One-way

Last minute

Recent return flight deals from Australia to Illinois

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06:05 - 06:17

SYD

ORD

39h 12m

2 stops

09:20 - 11:50

ORD

SYD

35h 30m

3 stops

$1,293Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

09:45 - 16:51

MEL

ORD

22h 06m

1 stop

17:16 - 06:45

ORD

MEL

22h 29m

1 stop

$1,310Qantas Airways

Fri, 7 Aug - Fri, 21 Aug

09:45 - 15:54

MEL

ORD

21h 09m

1 stop

15:54 - 05:00

ORD

MEL

22h 06m

1 stop

$1,316Qantas Airways

Sat, 15 Aug - Sat, 22 Aug

09:45 - 16:00

MEL

ORD

21h 15m

1 stop

17:16 - 06:45

ORD

MEL

22h 29m

1 stop

$1,332American Airlines

Sat, 1 Aug - Sat, 8 Aug

09:45 - 15:59

MEL

ORD

21h 14m

1 stop

14:57 - 05:00

ORD

MEL

23h 03m

1 stop

$1,333American Airlines

Wed, 29 Jul - Wed, 26 Aug

09:55 - 22:59

SYD

ORD

28h 04m

2 stops

16:20 - 08:45

ORD

SYD

25h 25m

2 stops

$1,649Air New Zealand

Mon, 3 Aug - Wed, 19 Aug

09:40 - 07:55

BNE

ORD

37h 15m

2 stops

15:35 - 11:05

ORD

BNE

28h 30m

2 stops

$1,763Air New Zealand

Thu, 20 Aug - Mon, 24 Aug

12:10 - 12:55

BNE

ORD

40h 45m

1 stop

14:35 - 10:30

ORD

BNE

27h 55m

1 stop

$1,907Cathay Pacific

Mon, 2 Nov - Thu, 19 Nov

23:55 - 22:05

PER

ORD

35h 10m

3 stops

15:40 - 17:00

ORD

PER

36h 20m

2 stops

$2,809Air Canada

Sun, 23 Aug - Fri, 18 Sep

23:55 - 22:05

PER

ORD

35h 10m

3 stops

14:15 - 15:45

ORD

PER

36h 30m

3 stops

$2,820Air Canada

Sun, 23 Aug - Fri, 18 Sep

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

$1,293

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 7/8

09:45-16:51

1 stop22h 06m

Chicago O'Hare Intl

Fri 21/8

17:16-06:45

1 stop22h 29m

$1,310

Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 15/8

09:45-15:54

1 stop21h 09m

Chicago O'Hare Intl

Sat 22/8

15:54-05:00

1 stop22h 06m

$1,316

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 1/8

09:45-16:00

1 stop21h 15m

Chicago O'Hare Intl

Sat 8/8

17:16-06:45

1 stop22h 29m

$1,332

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 29/7

09:45-15:59

1 stop21h 14m

Chicago O'Hare Intl

Wed 26/8

14:57-05:00

1 stop23h 03m

$1,333

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 3/8

09:55-22:59

2 stops28h 04m

Chicago O'Hare Intl

Wed 19/8

16:20-08:45

2 stops25h 25m

$1,649

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 20/8

09:40-07:55

2 stops37h 15m

Chicago O'Hare Intl

Mon 24/8

15:35-11:05

2 stops28h 30m

$1,763

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Mon 2/11

12:10-12:55

1 stop40h 45m

Chicago O'Hare Intl

Thu 19/11

14:35-10:30

1 stop27h 55m

$1,907

PerthChicago

PER - ORD

PERORD

Perth

Sun 23/8

23:55-22:05

3 stops35h 10m

Chicago O'Hare Intl

Fri 18/9

15:40-17:00

2 stops36h 20m

$2,809

PerthChicago

PER - ORD

PERORD

Perth

Sun 23/8

23:55-22:05

3 stops35h 10m

Chicago O'Hare Intl

Fri 18/9

14:15-15:45

3 stops36h 30m

$2,820

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 New Zealand and Air Canada 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

Find flights to Chicago

Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$821
Best Round-Trip Price	$1,293
Fastest flight time	28h 16m

The best one-way flight price to Illinois from Australia in the last 5 days is $821 (Melbourne to Chicago O'Hare Intl).

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The best round-trip flight price to Illinois from Australia in the last 5 days is $1,293 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 28h 16m (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 $133/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $681/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 Water Tower and Chicago Riverwalk 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 New Zealand and Air Canada 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 9 as of July 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.