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 21h 42m and 20h 54m, respectively.

$618 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

Search all flight deals to Chicago

American Airlines

18 Feb

SYD

28h 35m

1 stop

ORD

22 Feb

ORD

21h 14m

1 stop

SYD

$1,053

Delta

16 Nov

SYD

30h 15m

1 stop

ORD

30 Nov

ORD

31h 45m

1 stop

SYD

$1,059

Delta

20 Jan

SYD

25h 08m

2 stops

ORD

31 Jan

ORD

25h 08m

2 stops

SYD

$1,060

Qantas Airways

16 Nov

SYD

21h 55m

1 stop

ORD

30 Nov

ORD

42h 57m

1 stop

SYD

$1,085

Qantas Airways

18 Feb

SYD

41h 13m

1 stop

ORD

22 Feb

ORD

23h 01m

1 stop

SYD

$1,099

Qantas Airways

26 Apr

SYD

22h 55m

1 stop

ORD

8 May

ORD

42h 40m

1 stop

SYD

$1,102

Multiple Airlines

26 Nov

SYD

22h 27m

1 stop

ORD

3 Dec

ORD

22h 45m

1 stop

SYD

$1,120

American Airlines

25 Dec

SYD

23h 50m

2 stops

ORD

19 Jan

ORD

34h 00m

1 stop

SYD

$1,123

Delta

26 Apr

SYD

41h 50m

2 stops

ORD

6 May

ORD

30h 20m

2 stops

SYD

$1,129

Qantas Airways

26 Nov

SYD

21h 06m

1 stop

ORD

3 Dec

ORD

24h 35m

1 stop

SYD

$1,138

Qantas Airways

25 Apr

SYD

23h 20m

1 stop

ORD

7 May

ORD

22h 20m

1 stop

SYD

$1,143

Qantas Airways

26 Nov

SYD

21h 06m

1 stop

ORD

3 Dec

ORD

24h 35m

1 stop

SYD

$1,163

Flights to Peoria, Illinois

Search all flight deals to Peoria, Illinois

American Airlines

17 Dec

BNE

26h 07m

2 stops

PIA

24 Dec

PIA

26h 36m

2 stops

BNE

$3,479

American Airlines

17 Dec

BNE

26h 07m

2 stops

PIA

24 Dec

PIA

27h 16m

1 stop

BNE

$3,489

Multiple Airlines

17 Dec

BNE

33h 45m

3 stops

PIA

24 Dec

PIA

26h 28m

2 stops

BNE

$3,556

American Airlines

17 Dec

BNE

29h 37m

1 stop

PIA

24 Dec

PIA

27h 16m

1 stop

BNE

$3,585

Multiple Airlines

17 Dec

BNE

30h 47m

3 stops

PIA

24 Dec

PIA

29h 48m

3 stops

BNE

$3,665

Emirates

15 Dec

BNE

40h 05m

2 stops

PIA

22 Dec

PIA

47h 40m

2 stops

BNE

$22,551

Flights to Moline

Search all flight deals to Moline

American Airlines

28 Nov

MEL

25h 43m

2 stops

MLI

5 Dec

MLI

29h 00m

1 stop

MEL

$2,049

American Airlines

28 Nov

MEL

21h 43m

1 stop

MLI

5 Dec

MLI

24h 28m

1 stop

MEL

$2,757

Multiple Airlines

28 Nov

MEL

30h 07m

3 stops

MLI

5 Dec

MLI

24h 34m

2 stops

MEL

$3,210

Multiple Airlines

28 Nov

MEL

30h 07m

3 stops

MLI

5 Dec

MLI

26h 23m

3 stops

MEL

$3,241

United Airlines

18 Dec

MEL

38h 15m

2 stops

MLI

25 Dec

MLI

31h 59m

2 stops

MEL

$3,371

Multiple Airlines

18 Dec

MEL

25h 13m

3 stops

MLI

25 Dec

MLI

24h 46m

2 stops

MEL

$3,548

Multiple Airlines

18 Dec

MEL

26h 41m

3 stops

MLI

25 Dec

MLI

34h 14m

3 stops

MEL

$3,788

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.

11:20 - 22:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 35m1 stop Los Angeles

18:46 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 14m1 stop Los Angeles

$1,053American Airlines

Thu, 18 Feb - Mon, 22 Feb

09:15 - 16:37SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

46h 22m2 stops Los Angeles Atlanta Hartsfield-Jackson

17:55 - 06:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

45h 55m2 stops Atlanta Hartsfield-Jackson Los Angeles

$1,059Delta

Mon, 26 Apr - Sat, 8 May

10:40 - 23:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 15m1 stop Los Angeles

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

31h 45m1 stop Los Angeles

$1,059Delta

Mon, 16 Nov - Mon, 30 Nov

11:10 - 16:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 55m1 stop Los Angeles

21:03 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 57m1 stop Los Angeles

$1,085Qantas Airways

Mon, 16 Nov - Mon, 30 Nov

14:05 - 14:18SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

41h 13m1 stop Dallas/Fort Worth

16:59 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

23h 01m1 stop Los Angeles

$1,099Qantas Airways

Thu, 18 Feb - Mon, 22 Feb

11:15 - 16:42SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 27m1 stop Los Angeles

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

22h 45m1 stop Los Angeles

$1,120Multiple Airlines

Thu, 26 Nov - Thu, 3 Dec

11:10 - 23:40SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

29h 30m2 stops Los Angeles Phoenix Sky Harbor Intl

06:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 00m1 stop Los Angeles

$1,123American Airlines

Sat, 26 Dec - Tue, 19 Jan

09:20 - 16:55MEL Melbourne-ORD Chicago O'Hare Intl

24h 35m1 stop Manila Ninoy Aquino Intl

22:45 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne

39h 45m1 stop Manila Ninoy Aquino Intl

$1,619Philippine Airlines

Fri, 26 Feb - Mon, 1 Mar

15:30 - 12:30MEL Melbourne-ORD Chicago O'Hare Intl

38h 00m1 stop Hong Kong Intl

14:10 - 23:05ORD Chicago O'Hare Intl-MEL Melbourne

39h 55m1 stop Hong Kong Intl

$1,757Cathay Pacific

Wed, 17 Feb - Thu, 11 Mar

08:40 - 12:30MEL Melbourne-ORD Chicago O'Hare Intl

44h 50m1 stop Hong Kong Intl

14:10 - 23:05ORD Chicago O'Hare Intl-MEL Melbourne

39h 55m1 stop Hong Kong Intl

$1,798Cathay Pacific

Sun, 24 Jan - Mon, 22 Feb

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

11:10 - 17:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 49m1 stop Los Angeles

21:03 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 57m1 stop Los Angeles

$1,055American Airlines

Mon, 9 Nov - Mon, 23 Nov

11:10 - 17:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 49m1 stop Los Angeles

21:03 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 57m1 stop Los Angeles

$1,056American Airlines

Mon, 9 Nov - Mon, 23 Nov

11:10 - 12:21SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

42h 11m1 stop Los Angeles

13:26 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 34m2 stops Phoenix Sky Harbor Intl Los Angeles

$1,056American Airlines

Mon, 9 Nov - Mon, 23 Nov

10:40 - 21:47SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 07m2 stops Los Angeles Salt Lake City

11:19 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 11m2 stops Detroit Metropolitan Wayne County Los Angeles

$1,059Delta

Mon, 9 Nov - Mon, 23 Nov

10:40 - 23:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 15m1 stop Los Angeles

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

32h 00m2 stops Salt Lake City Los Angeles

$1,059Delta

Mon, 9 Nov - Mon, 23 Nov

14:00 - 05:13SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 13m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

12:05 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 30m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

$1,562Multiple Airlines

Mon, 9 Nov - Mon, 23 Nov

14:00 - 05:13SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 13m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

12:05 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 30m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

$1,570Multiple Airlines

Mon, 9 Nov - Mon, 23 Nov

06:00 - 22:30ADL Adelaide-ORD Chicago O'Hare Intl

33h 00m2 stops Sydney Kingsford Smith Los Angeles

15:25 - 16:35ORD Chicago O'Hare Intl-ADL Adelaide

32h 40m2 stops Los Angeles Sydney Kingsford Smith

$1,814Qantas Airways

Thu, 5 Nov - Mon, 9 Nov

12:15 - 12:30BNE Brisbane-ORD Chicago O'Hare Intl

40h 15m1 stop Hong Kong Intl

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

28h 35m1 stop Hong Kong Intl

$1,987Cathay Pacific

Thu, 5 Nov - Mon, 9 Nov

12:15 - 12:30BNE Brisbane-ORD Chicago O'Hare Intl

40h 15m1 stop Hong Kong Intl

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

28h 35m1 stop Hong Kong Intl

$1,989Cathay Pacific

Thu, 5 Nov - Mon, 9 Nov

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 18/2

11:20-22:55

1 stop28h 35m

Chicago O'Hare Intl

Mon 22/2

18:46-09:00

1 stop21h 14m

$1,053

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 26/4

09:15-16:37

2 stops46h 22m

Chicago O'Hare Intl

Sat 8/5

17:55-06:50

2 stops45h 55m

$1,059

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 16/11

10:40-23:55

1 stop30h 15m

Chicago O'Hare Intl

Mon 30/11

07:45-08:30

1 stop31h 45m

$1,059

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 16/11

11:10-16:05

1 stop21h 55m

Chicago O'Hare Intl

Mon 30/11

21:03-09:00

1 stop42h 57m

$1,085

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 18/2

14:05-14:18

1 stop41h 13m

Chicago O'Hare Intl

Mon 22/2

16:59-09:00

1 stop23h 01m

$1,099

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 26/11

11:15-16:42

1 stop22h 27m

Chicago O'Hare Intl

Thu 3/12

17:15-09:00

1 stop22h 45m

$1,120

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sat 26/12

11:10-23:40

2 stops29h 30m

Chicago O'Hare Intl

Tue 19/1

06:00-09:00

1 stop34h 00m

$1,123

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Fri 26/2

09:20-16:55

1 stop24h 35m

Chicago O'Hare Intl

Mon 1/3

22:45-07:30

1 stop39h 45m

$1,619

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 17/2

15:30-12:30

1 stop38h 00m

Chicago O'Hare Intl

Thu 11/3

14:10-23:05

1 stop39h 55m

$1,757

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Sun 24/1

08:40-12:30

1 stop44h 50m

Chicago O'Hare Intl

Mon 22/2

14:10-23:05

1 stop39h 55m

$1,798

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, American Airlines 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 41% 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	$618
Best Round-Trip Price	$1,053
Fastest flight time	27h 36m

The best one-way flight price to Illinois from Australia in the last 5 days is $618 (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 $1,053 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 27h 36m (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 $234/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $1,055/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, American Airlines and United Airlines happen to be the most popular among our users. In the past year, 41% 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 November 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.