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 32m and 20h 46m, respectively.

$622 Cheap Flights to Illinois in 2026/27

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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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Delta

17 Nov

SYD

23h 01m

2 stops

ORD

24 Nov

ORD

24h 46m

2 stops

SYD

$1,064

Delta

3 Nov

SYD

24h 07m

2 stops

ORD

10 Nov

ORD

26h 52m

2 stops

SYD

$1,065

Delta

27 Oct

SYD

26h 50m

2 stops

ORD

11 Nov

ORD

25h 27m

2 stops

SYD

$1,068

Delta

9 Nov

SYD

25h 25m

2 stops

ORD

22 Nov

ORD

31h 26m

2 stops

SYD

$1,069

Delta

25 Oct

SYD

19h 23m

1 stop

ORD

9 Nov

ORD

31h 45m

1 stop

SYD

$1,135

Delta

23 Oct

SYD

24h 14m

2 stops

ORD

7 Nov

ORD

25h 35m

2 stops

SYD

$1,203

Delta

23 Oct

SYD

19h 23m

1 stop

ORD

29 Oct

ORD

31h 51m

1 stop

SYD

$1,206

Multiple Airlines

4 Nov

SYD

35h 21m

3 stops

ORD

11 Nov

ORD

34h 36m

3 stops

SYD

$1,359

Air Canada

4 Nov

BNE

19h 52m

1 stop

ORD

11 Nov

ORD

33h 40m

2 stops

BNE

$1,369

Air Canada

4 Nov

BNE

25h 07m

2 stops

ORD

11 Nov

ORD

33h 40m

2 stops

BNE

$1,374

Air Canada

18 Nov

BNE

40h 22m

2 stops

ORD

23 Nov

ORD

25h 15m

1 stop

BNE

$1,378

Air Canada

18 Nov

BNE

25h 13m

2 stops

ORD

23 Nov

ORD

27h 55m

2 stops

BNE

$1,388

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.

10:40 - 16:41SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 01m2 stops Los Angeles Minneapolis St Paul

14:44 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 46m2 stops Detroit Metropolitan Wayne County Los Angeles

$1,064Delta

Tue, 17 Nov - Tue, 24 Nov

10:40 - 17:27SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 47m1 stop Los Angeles

07:45 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 45m1 stop Los Angeles

$1,064Delta

Tue, 17 Nov - Tue, 24 Nov

10:45 - 14:37BNE Brisbane-ORD Chicago O'Hare Intl

19h 52m1 stop Vancouver Intl

07:05 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

33h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,369Air Canada

Wed, 4 Nov - Wed, 11 Nov

10:45 - 17:10BNE Brisbane-ORD Chicago O'Hare Intl

22h 25m2 stops Vancouver Intl Calgary

07:05 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

33h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,374Air Canada

Thu, 26 Nov - Sun, 29 Nov

09:55 - 20:35SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 40m2 stops Auckland Intl Los Angeles

13:55 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 40m2 stops Los Angeles Auckland Intl

$1,787Air New Zealand

Thu, 3 Dec - Wed, 10 Feb

11:50 - 21:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 46m2 stops Auckland Intl Houston George Bush Intcntl

15:00 - 12:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 50m2 stops Los Angeles Auckland Intl

$1,850Air New Zealand

Mon, 26 Oct - Mon, 2 Nov

13:05 - 19:16SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 11m1 stop Dallas/Fort Worth

05:30 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 30m1 stop Los Angeles

$1,879Qantas Airways

Mon, 26 Oct - Mon, 2 Nov

10:10 - 15:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 49m1 stop Los Angeles

17:15 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 45m1 stop Los Angeles

$1,925Qantas Airways

Sat, 24 Oct - Sun, 8 Nov

22:45 - 17:00MEL Melbourne-ORD Chicago O'Hare Intl

35h 15m1 stop Los Angeles

15:51 - 10:20ORD Chicago O'Hare Intl-MEL Melbourne

25h 29m2 stops Dallas/Fort Worth Sydney Kingsford Smith

$1,975American Airlines

Sun, 15 Nov - Wed, 25 Nov

22:45 - 13:32MEL Melbourne-ORD Chicago O'Hare Intl

31h 47m1 stop Los Angeles

15:51 - 10:20ORD Chicago O'Hare Intl-MEL Melbourne

25h 29m2 stops Dallas/Fort Worth Sydney Kingsford Smith

$2,000American Airlines

Wed, 18 Nov - Wed, 25 Nov

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

17:55 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

36h 00m2 stops Melbourne Hong Kong Intl

15:10 - 15:55ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

32h 45m2 stops Hong Kong Intl Melbourne

$2,148Multiple Airlines

Mon, 12 Oct - Tue, 27 Oct

15:05 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

38h 50m1 stop Hong Kong Intl

16:15 - 07:10ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

46h 55m1 stop Hong Kong Intl

$2,224Cathay Pacific

Wed, 14 Oct - Thu, 22 Oct

15:05 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

38h 50m1 stop Hong Kong Intl

15:10 - 16:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 40m2 stops Hong Kong Intl Melbourne

$2,429Multiple Airlines

Mon, 12 Oct - Tue, 27 Oct

11:55 - 21:31SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 36m2 stops Auckland Intl Los Angeles

07:30 - 08:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 15m2 stops Houston George Bush Intcntl Auckland Intl

$2,456Air New Zealand

Wed, 14 Oct - Thu, 22 Oct

06:00 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

47h 55m2 stops Brisbane Hong Kong Intl

16:15 - 20:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

36h 30m1 stop Hong Kong Intl

$2,499Cathay Pacific

Wed, 14 Oct - Thu, 22 Oct

20:50 - 08:35SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

51h 45m1 stop Abu Dhabi Zayed Intl

14:15 - 06:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

48h 15m1 stop Abu Dhabi Zayed Intl

$2,725Etihad Airways

Mon, 12 Oct - Tue, 27 Oct

10:20 - 07:51SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 31m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

08:40 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 40m2 stops Calgary Vancouver Intl

$2,973Air Canada

Wed, 14 Oct - Thu, 22 Oct

10:20 - 07:51SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 31m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

11:05 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 15m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Vancouver Intl

$3,053Air Canada

Wed, 14 Oct - Thu, 22 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 17/11

10:40-16:41

2 stops23h 01m

Chicago O'Hare Intl

Tue 24/11

14:44-08:30

2 stops24h 46m

$1,064

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 17/11

10:40-17:27

1 stop23h 47m

Chicago O'Hare Intl

Tue 24/11

07:45-08:30

1 stop31h 45m

$1,064

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Wed 4/11

10:45-14:37

1 stop19h 52m

Chicago O'Hare Intl

Wed 11/11

07:05-08:45

2 stops33h 40m

$1,369

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Thu 26/11

10:45-17:10

2 stops22h 25m

Chicago O'Hare Intl

Sun 29/11

07:05-08:45

2 stops33h 40m

$1,374

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 3/12

09:55-20:35

2 stops27h 40m

Chicago O'Hare Intl

Wed 10/2

13:55-08:35

2 stops25h 40m

$1,787

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 26/10

11:50-21:36

2 stops25h 46m

Chicago O'Hare Intl

Mon 2/11

15:00-12:50

2 stops28h 50m

$1,850

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 26/10

13:05-19:16

1 stop22h 11m

Chicago O'Hare Intl

Mon 2/11

05:30-09:00

1 stop34h 30m

$1,879

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sat 24/10

10:10-15:59

1 stop21h 49m

Chicago O'Hare Intl

Sun 8/11

17:15-09:00

1 stop22h 45m

$1,925

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Sun 15/11

22:45-17:00

1 stop35h 15m

Chicago O'Hare Intl

Wed 25/11

15:51-10:20

2 stops25h 29m

$1,975

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 18/11

22:45-13:32

1 stop31h 47m

Chicago O'Hare Intl

Wed 25/11

15:51-10:20

2 stops25h 29m

$2,000

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 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 40% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 8 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	$622
Best Round-Trip Price	$1,064
Fastest flight time	24h 35m

The best one-way flight price to Illinois from Australia in the last 5 days is $622 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The best return flight price to Illinois from Australia in the last 5 days is $1,064 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 24h 35m (Melbourne to Chicago O'Hare Intl).

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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 $162/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $803/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, Millennium Park and Chicago Water Tower 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 8 airlines that fly to Illinois on a routine basis, but Qantas Airways, Air New Zealand and United Airlines happen to be the most popular among our users. In the past year, 40% 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 8 as of October 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.