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 05m and 20h 43m, respectively.

$841 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

American Airlines

27 July

MEL

22h 05m

1 stop

ORD

9 Aug

ORD

30h 45m

1 stop

MEL

$1,334

Multiple Airlines

10 Aug

MEL

23h 02m

1 stop

ORD

19 Aug

ORD

25h 49m

1 stop

MEL

$1,338

American Airlines

10 Aug

MEL

23h 16m

2 stops

ORD

19 Aug

ORD

25h 49m

1 stop

MEL

$1,350

United Airlines

15 July

MEL

20h 05m

1 stop

ORD

29 July

ORD

26h 00m

2 stops

MEL

$1,352

United Airlines

15 July

MEL

24h 05m

2 stops

ORD

29 July

ORD

24h 25m

2 stops

MEL

$1,354

United Airlines

13 July

MEL

27h 24m

2 stops

ORD

31 July

ORD

34h 30m

1 stop

MEL

$1,355

Delta

24 July

MEL

23h 25m

2 stops

MDW

2 Aug

MDW

45h 52m

2 stops

MEL

$1,362

Delta

24 July

MEL

26h 29m

2 stops

ORD

2 Aug

ORD

45h 33m

2 stops

MEL

$1,362

Delta

24 July

MEL

23h 25m

2 stops

MDW

2 Aug

MDW

45h 52m

2 stops

MEL

$1,364

Delta

15 July

MEL

28h 18m

1 stop

ORD

29 July

ORD

33h 21m

1 stop

MEL

$1,364

Delta

24 July

MEL

26h 29m

2 stops

ORD

2 Aug

ORD

45h 33m

2 stops

MEL

$1,368

Air New Zealand

24 July

MEL

28h 46m

1 stop

ORD

2 Aug

ORD

43h 00m

1 stop

MEL

$1,371

Flights to Moline

Search all flight deals to Moline

American Airlines

5 Nov

BNE

49h 35m

2 stops

MLI

9 Nov

MLI

22h 55m

1 stop

BNE

$1,819

American Airlines

5 Nov

BNE

50h 30m

2 stops

MLI

9 Nov

MLI

22h 55m

1 stop

BNE

$1,822

American Airlines

5 Nov

BNE

45h 10m

2 stops

MLI

9 Nov

MLI

33h 11m

1 stop

BNE

$1,901

American Airlines

5 Nov

BNE

29h 05m

1 stop

MLI

9 Nov

MLI

22h 55m

1 stop

BNE

$1,934

American Airlines

5 Nov

BNE

29h 05m

1 stop

MLI

9 Nov

MLI

22h 55m

1 stop

BNE

$1,938

American Airlines

5 Nov

BNE

29h 05m

1 stop

MLI

9 Nov

MLI

54h 53m

2 stops

BNE

$1,975

American Airlines

5 Nov

BNE

25h 35m

2 stops

MLI

9 Nov

MLI

32h 31m

2 stops

BNE

$3,045

American Airlines

5 Nov

BNE

25h 35m

2 stops

MLI

9 Nov

MLI

30h 53m

2 stops

BNE

$3,055

American Airlines

5 Nov

BNE

29h 05m

1 stop

MLI

9 Nov

MLI

22h 55m

1 stop

BNE

$3,063

American Airlines

5 Nov

BNE

21h 24m

1 stop

MLI

9 Nov

MLI

27h 20m

1 stop

BNE

$3,065

American Airlines

5 Nov

BNE

24h 52m

2 stops

MLI

9 Nov

MLI

27h 20m

2 stops

BNE

$3,090

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.

09:45 - 16:50

MEL

ORD

22h 05m

1 stop

09:00 - 06:45

ORD

MEL

30h 45m

1 stop

$1,334American Airlines

Mon, 27 Jul - Sun, 9 Aug

09:45 - 23:00

MEL

ORD

28h 15m

1 stop

11:52 - 06:45

ORD

MEL

27h 53m

1 stop

$1,338American Airlines

Mon, 27 Jul - Tue, 11 Aug

09:30 - 18:35

MEL

ORD

24h 05m

2 stops

16:05 - 07:30

ORD

MEL

24h 25m

2 stops

$1,354United Airlines

Wed, 15 Jul - Wed, 29 Jul

10:55 - 22:59

MEL

ORD

27h 04m

1 stop

06:00 - 07:30

ORD

MEL

34h 30m

1 stop

$1,355United Airlines

Mon, 13 Jul - Fri, 31 Jul

09:30 - 23:16

MEL

ORD

28h 46m

1 stop

21:30 - 07:30

ORD

MEL

43h 00m

1 stop

$1,371Air New Zealand

Fri, 24 Jul - Sun, 2 Aug

09:10 - 23:59

SYD

STL

29h 49m

1 stop

06:30 - 07:30

STL

SYD

33h 00m

1 stop

$1,401Qantas Airways

Wed, 15 Jul - Wed, 14 Oct

11:45 - 23:02

SYD

ORD

28h 17m

2 stops

14:10 - 08:45

ORD

SYD

25h 35m

2 stops

$1,629Air New Zealand

Wed, 11 Nov - Mon, 16 Nov

06:00 - 19:44

ADL

ORD

28h 14m

2 stops

21:06 - 09:25

ORD

ADL

45h 49m

2 stops

$1,703Qantas Airways

Sat, 1 Aug - Sat, 8 Aug

06:00 - 14:02

MEL

STL

47h 02m

3 stops

08:55 - 11:35

STL

MEL

35h 40m

3 stops

$1,725Air Canada

Wed, 5 Aug - Sun, 9 Aug

06:00 - 20:22

MEL

STL

29h 22m

3 stops

14:40 - 11:05

STL

MEL

29h 25m

3 stops

$1,795Air Canada

Wed, 5 Aug - Sun, 9 Aug

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 27/7

09:45-16:50

1 stop22h 05m

Chicago O'Hare Intl

Sun 9/8

09:00-06:45

1 stop30h 45m

$1,334

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 27/7

09:45-23:00

1 stop28h 15m

Chicago O'Hare Intl

Tue 11/8

11:52-06:45

1 stop27h 53m

$1,338

Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 15/7

09:30-18:35

2 stops24h 05m

Chicago O'Hare Intl

Wed 29/7

16:05-07:30

2 stops24h 25m

$1,354

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 13/7

10:55-22:59

1 stop27h 04m

Chicago O'Hare Intl

Fri 31/7

06:00-07:30

1 stop34h 30m

$1,355

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 24/7

09:30-23:16

1 stop28h 46m

Chicago O'Hare Intl

Sun 2/8

21:30-07:30

1 stop43h 00m

$1,371

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 15/7

09:10-23:59

1 stop29h 49m

Lambert-St Louis

Wed 14/10

06:30-07:30

1 stop33h 00m

$1,401

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 11/11

11:45-23:02

2 stops28h 17m

Chicago O'Hare Intl

Mon 16/11

14:10-08:45

2 stops25h 35m

$1,629

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 1/8

06:00-19:44

2 stops28h 14m

Chicago O'Hare Intl

Sat 8/8

21:06-09:25

2 stops45h 49m

$1,703

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 5/8

06:00-14:02

3 stops47h 02m

Lambert-St Louis

Sun 9/8

08:55-11:35

3 stops35h 40m

$1,725

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 5/8

06:00-20:22

3 stops29h 22m

Lambert-St Louis

Sun 9/8

14:40-11:05

3 stops29h 25m

$1,795

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?

Air New Zealand, Air Canada and Qantas Airways are the top three most popular airlines that fly to Illinois from Australia according to our data. Air New Zealand is the first choice among our users, with 27% 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	$841
Best Round-Trip Price	$1,334
Fastest flight time	24h 40m

The best one-way flight price to Illinois from Australia in the last 5 days is $841 (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 $1,334 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 24h 40m (Sydney Kingsford Smith 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 $131/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $657/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 Air New Zealand, Air Canada and Qantas Airways happen to be the most popular among our users. In the past year, 27% of those who searched for flights to Illinois looked to travel with Air New Zealand, 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 June 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.