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 35m and 23h 33m, respectively.

$842 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

Qantas Airways

29 July

MEL

29h 22m

1 stop

ORD

6 Aug

ORD

27h 53m

1 stop

MEL

$1,312

American Airlines

29 July

MEL

21h 14m

1 stop

ORD

6 Aug

ORD

22h 29m

1 stop

MEL

$1,329

United Airlines

15 July

MEL

24h 45m

2 stops

ORD

29 July

ORD

24h 18m

2 stops

MEL

$1,343

United Airlines

5 July

MEL

26h 33m

2 stops

ORD

21 July

ORD

24h 30m

2 stops

MEL

$1,344

United Airlines

10 July

MEL

24h 45m

2 stops

ORD

17 July

ORD

43h 40m

1 stop

MEL

$1,348

United Airlines

12 July

MEL

27h 08m

2 stops

ORD

27 July

ORD

28h 15m

2 stops

MEL

$1,350

United Airlines

9 July

MEL

27h 24m

2 stops

ORD

29 July

ORD

22h 20m

1 stop

MEL

$1,352

Delta

24 July

MEL

26h 52m

2 stops

ORD

2 Aug

ORD

45h 10m

2 stops

MEL

$1,354

United Airlines

13 July

MEL

22h 40m

1 stop

ORD

15 Aug

ORD

22h 55m

1 stop

MEL

$1,356

Delta

24 July

MEL

23h 57m

2 stops

ORD

2 Aug

ORD

45h 10m

2 stops

MEL

$1,358

Delta

24 July

MEL

27h 15m

2 stops

MDW

2 Aug

MDW

45h 44m

2 stops

MEL

$1,359

Delta

15 July

MEL

28h 18m

1 stop

ORD

29 July

ORD

33h 13m

1 stop

MEL

$1,359

Flights to Moline

Search all flight deals to Moline

American Airlines

12 Nov

BNE

37h 43m

2 stops

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$2,774

American Airlines

12 Nov

BNE

37h 43m

2 stops

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$2,777

American Airlines

12 Nov

BNE

37h 30m

2 stops

MLI

16 Nov

MLI

27h 20m

1 stop

BNE

$2,788

American Airlines

12 Nov

BNE

41h 54m

2 stops

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$2,794

American Airlines

12 Nov

BNE

26h 30m

2 stops

MLI

16 Nov

MLI

26h 27m

2 stops

BNE

$3,023

American Airlines

12 Nov

BNE

25h 05m

2 stops

MLI

16 Nov

MLI

26h 27m

2 stops

BNE

$3,036

American Airlines

12 Nov

BNE

26h 30m

2 stops

MLI

16 Nov

MLI

31h 41m

2 stops

BNE

$3,037

United Airlines

10 June

BNE

22h 19m

2 stops

MLI

22 July

MLI

23h 43m

2 stops

BNE

$3,040

American Airlines

12 Nov

BNE

29h 30m

1 stop

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$3,043

American Airlines

12 Nov

BNE

26h 30m

2 stops

MLI

16 Nov

MLI

26h 27m

2 stops

BNE

$3,044

American Airlines

12 Nov

BNE

21h 49m

1 stop

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$3,045

American Airlines

12 Nov

BNE

21h 49m

1 stop

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$3,058

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.

09:45 - 00:07

MEL

ORD

29h 22m

1 stop

11:52 - 06:45

ORD

MEL

27h 53m

1 stop

$1,312Qantas Airways

Wed, 29 Jul - Thu, 6 Aug

09:45 - 15:59

MEL

ORD

21h 14m

1 stop

17:16 - 06:45

ORD

MEL

22h 29m

1 stop

$1,329American Airlines

Wed, 29 Jul - Thu, 6 Aug

10:55 - 20:40

MEL

ORD

24h 45m

2 stops

16:12 - 07:30

ORD

MEL

24h 18m

2 stops

$1,343United Airlines

Wed, 15 Jul - Wed, 29 Jul

09:30 - 21:03

MEL

ORD

26h 33m

2 stops

16:45 - 08:15

ORD

MEL

24h 30m

2 stops

$1,344United Airlines

Sun, 5 Jul - Tue, 21 Jul

10:55 - 20:40

MEL

ORD

24h 45m

2 stops

21:35 - 08:15

ORD

MEL

43h 40m

1 stop

$1,348United Airlines

Fri, 10 Jul - Fri, 17 Jul

09:30 - 14:35

MEL

ORD

20h 05m

1 stop

13:00 - 08:15

ORD

MEL

28h 15m

2 stops

$1,350United Airlines

Sun, 12 Jul - Mon, 27 Jul

10:20 - 21:30

SYD

STL

26h 10m

2 stops

13:13 - 06:55

STL

SYD

26h 42m

2 stops

$1,457Air New Zealand

Thu, 11 Jun - Sun, 21 Jun

09:20 - 18:42

SYD

STL

48h 22m

2 stops

08:55 - 07:20

STL

SYD

31h 25m

2 stops

$1,504Air Canada

Mon, 10 Aug - Fri, 4 Sep

10:15 - 07:50

BNE

ORD

36h 35m

2 stops

14:08 - 07:05

ORD

BNE

25h 57m

2 stops

$2,234Air Canada

Tue, 21 Jul - Mon, 27 Jul

22:45 - 21:00

PER

ORD

35h 15m

2 stops

19:20 - 18:35

ORD

PER

34h 15m

1 stop

$2,436Qatar Airways

Tue, 13 Oct - Tue, 20 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 29/7

09:45-00:07

1 stop29h 22m

Chicago O'Hare Intl

Thu 6/8

11:52-06:45

1 stop27h 53m

$1,312

Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 29/7

09:45-15:59

1 stop21h 14m

Chicago O'Hare Intl

Thu 6/8

17:16-06:45

1 stop22h 29m

$1,329

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 15/7

10:55-20:40

2 stops24h 45m

Chicago O'Hare Intl

Wed 29/7

16:12-07:30

2 stops24h 18m

$1,343

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 5/7

09:30-21:03

2 stops26h 33m

Chicago O'Hare Intl

Tue 21/7

16:45-08:15

2 stops24h 30m

$1,344

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 10/7

10:55-20:40

2 stops24h 45m

Chicago O'Hare Intl

Fri 17/7

21:35-08:15

1 stop43h 40m

$1,348

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 12/7

09:30-14:35

1 stop20h 05m

Chicago O'Hare Intl

Mon 27/7

13:00-08:15

2 stops28h 15m

$1,350

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 11/6

10:20-21:30

2 stops26h 10m

Lambert-St Louis

Sun 21/6

13:13-06:55

2 stops26h 42m

$1,457

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

09:20-18:42

2 stops48h 22m

Lambert-St Louis

Fri 4/9

08:55-07:20

2 stops31h 25m

$1,504

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 21/7

10:15-07:50

2 stops36h 35m

Chicago O'Hare Intl

Mon 27/7

14:08-07:05

2 stops25h 57m

$2,234

PerthChicago

PER - ORD

PERORD

Perth

Tue 13/10

22:45-21:00

2 stops35h 15m

Chicago O'Hare Intl

Tue 20/10

19:20-18:35

1 stop34h 15m

$2,436

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 Air New Zealand 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	$842
Best Round-Trip Price	$1,312
Fastest flight time	22h 22m

The best one-way flight price to Illinois from Australia in the last 5 days is $842 (Melbourne to Lambert-St Louis).

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The best round-trip flight price to Illinois from Australia in the last 5 days is $1,312 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 22h 22m (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 $128/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $736/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 Air New Zealand 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 10 as of May 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.