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 43m and 24h 15m, respectively.

$753 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

Multiple Airlines

18 Apr

MEL

24h 57m

2 stops

ORD

25 Apr

ORD

30h 00m

2 stops

MEL

$1,172

American Airlines

17 Mar

BNE

42h 45m

2 stops

ORD

1 Apr

ORD

21h 16m

1 stop

BNE

$1,233

American Airlines

17 Mar

BNE

42h 45m

2 stops

ORD

1 Apr

ORD

21h 16m

1 stop

BNE

$1,239

Multiple Airlines

19 Apr

SYD

31h 20m

2 stops

ORD

26 Apr

ORD

39h 35m

2 stops

SYD

$1,284

Multiple Airlines

18 Apr

SYD

25h 12m

2 stops

ORD

25 Apr

ORD

36h 50m

2 stops

SYD

$1,297

Multiple Airlines

18 Apr

SYD

25h 12m

2 stops

ORD

25 Apr

ORD

29h 50m

2 stops

SYD

$1,301

American Airlines

17 Mar

BNE

42h 45m

2 stops

ORD

1 Apr

ORD

28h 35m

1 stop

BNE

$1,306

American Airlines

17 Mar

BNE

42h 45m

2 stops

ORD

1 Apr

ORD

26h 29m

1 stop

BNE

$1,309

Multiple Airlines

17 Apr

SYD

32h 27m

2 stops

ORD

24 Apr

ORD

30h 50m

2 stops

SYD

$1,314

Multiple Airlines

11 May

MEL

31h 20m

2 stops

ORD

16 June

ORD

32h 16m

2 stops

MEL

$1,339

Air Canada

12 May

BNE

39h 18m

2 stops

ORD

26 May

ORD

24h 25m

1 stop

BNE

$1,340

Air Canada

12 May

BNE

25h 08m

2 stops

ORD

26 May

ORD

30h 10m

2 stops

BNE

$1,344

Flights to Moline

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United Airlines

19 Mar

BNE

22h 12m

2 stops

MLI

23 Mar

MLI

48h 05m

2 stops

BNE

$1,209

United Airlines

19 Mar

BNE

22h 12m

2 stops

MLI

23 Mar

MLI

44h 08m

2 stops

BNE

$1,813

United Airlines

19 Mar

BNE

22h 12m

2 stops

MLI

23 Mar

MLI

28h 44m

2 stops

BNE

$1,814

American Airlines

19 Mar

BNE

29h 13m

1 stop

MLI

23 Mar

MLI

24h 30m

2 stops

BNE

$1,853

American Airlines

19 Mar

BNE

21h 21m

1 stop

MLI

23 Mar

MLI

24h 30m

2 stops

BNE

$1,855

American Airlines

19 Mar

BNE

29h 13m

1 stop

MLI

23 Mar

MLI

24h 30m

2 stops

BNE

$1,858

American Airlines

19 Mar

BNE

21h 21m

1 stop

MLI

23 Mar

MLI

22h 59m

1 stop

BNE

$2,633

American Airlines

19 Mar

BNE

29h 13m

1 stop

MLI

23 Mar

MLI

22h 59m

1 stop

BNE

$2,678

United Airlines

19 Mar

BNE

26h 42m

2 stops

MLI

23 Mar

MLI

28h 44m

2 stops

BNE

$2,818

American Airlines

19 Mar

BNE

21h 21m

1 stop

MLI

23 Mar

MLI

24h 30m

2 stops

BNE

$3,023

American Airlines

19 Mar

BNE

21h 21m

1 stop

MLI

23 Mar

MLI

32h 17m

1 stop

BNE

$3,447

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.

13:30 - 23:27

MEL

ORD

24h 57m

2 stops

15:00 - 12:00

ORD

MEL

30h 00m

2 stops

$1,172Multiple Airlines

Sat, 18 Apr - Sat, 25 Apr

08:40 - 12:25

BNE

ORD

42h 45m

2 stops

16:44 - 05:00

ORD

BNE

21h 16m

1 stop

$1,233American Airlines

Tue, 17 Mar - Wed, 1 Apr

10:30 - 21:07

MEL

STL

26h 37m

2 stops

08:17 - 09:00

STL

MEL

32h 43m

2 stops

$1,273United Airlines

Wed, 18 Mar - Sun, 22 Mar

10:00 - 10:18

BNE

ORD

39h 18m

2 stops

15:40 - 07:05

ORD

BNE

24h 25m

1 stop

$1,340Air Canada

Tue, 12 May - Tue, 26 May

10:00 - 20:08

BNE

ORD

25h 08m

2 stops

09:55 - 07:05

ORD

BNE

30h 10m

2 stops

$1,344Air Canada

Tue, 12 May - Tue, 26 May

10:30 - 16:49

MEL

STL

22h 19m

2 stops

18:05 - 08:30

STL

MEL

46h 25m

2 stops

$1,346United Airlines

Wed, 25 Mar - Sun, 29 Mar

13:35 - 19:30

MEL

STL

20h 55m

1 stop

06:36 - 06:45

STL

MEL

33h 09m

1 stop

$1,400Qantas Airways

Sat, 2 May - Tue, 2 Jun

16:25 - 23:58

MEL

STL

23h 33m

2 stops

11:46 - 05:00

STL

MEL

26h 14m

1 stop

$1,411Qantas Airways

Sat, 28 Mar - Sat, 4 Apr

11:55 - 23:15

SYD

ORD

26h 20m

2 stops

16:30 - 10:40

ORD

SYD

27h 10m

2 stops

$1,447Air New Zealand

Fri, 5 Jun - Fri, 19 Jun

19:50 - 23:16

PER

ORD

40h 26m

2 stops

16:45 - 16:00

ORD

PER

34h 15m

2 stops

$1,867Air New Zealand

Sat, 30 May - Sat, 6 Jun

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 18/4

13:30-23:27

2 stops24h 57m

Chicago O'Hare Intl

Sat 25/4

15:00-12:00

2 stops30h 00m

$1,172

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

08:40-12:25

2 stops42h 45m

Chicago O'Hare Intl

Wed 1/4

16:44-05:00

1 stop21h 16m

$1,233

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 18/3

10:30-21:07

2 stops26h 37m

Lambert-St Louis

Sun 22/3

08:17-09:00

2 stops32h 43m

$1,273

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 12/5

10:00-10:18

2 stops39h 18m

Chicago O'Hare Intl

Tue 26/5

15:40-07:05

1 stop24h 25m

$1,340

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 12/5

10:00-20:08

2 stops25h 08m

Chicago O'Hare Intl

Tue 26/5

09:55-07:05

2 stops30h 10m

$1,344

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 25/3

10:30-16:49

2 stops22h 19m

Lambert-St Louis

Sun 29/3

18:05-08:30

2 stops46h 25m

$1,346

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sat 2/5

13:35-19:30

1 stop20h 55m

Lambert-St Louis

Tue 2/6

06:36-06:45

1 stop33h 09m

$1,400

Fastest return journey

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sat 28/3

16:25-23:58

2 stops23h 33m

Lambert-St Louis

Sat 4/4

11:46-05:00

1 stop26h 14m

$1,411

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 5/6

11:55-23:15

2 stops26h 20m

Chicago O'Hare Intl

Fri 19/6

16:30-10:40

2 stops27h 10m

$1,447

PerthChicago

PER - ORD

PERORD

Perth

Sat 30/5

19:50-23:16

2 stops40h 26m

Chicago O'Hare Intl

Sat 6/6

16:45-16:00

2 stops34h 15m

$1,867

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 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 42% 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	$753
Best Round-Trip Price	$1,172
Fastest flight time	26h 08m

The best one-way flight price to Illinois from Australia in the last 72 hours is $753 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The best round-trip flight price to Illinois from Australia in the last 72 hours is $1,172 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 26h 08m (Brisbane 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 $82/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, 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 United Airlines happen to be the most popular among our users. In the past year, 42% 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 March 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.