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 22h 33m and 19h 53m, respectively.

$779 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

6 June

MEL

25h 10m

1 stop

ORD

13 June

ORD

23h 01m

1 stop

MEL

$1,316

Qantas Airways

27 May

MEL

21h 46m

1 stop

ORD

3 June

ORD

24h 25m

1 stop

MEL

$1,317

Qantas Airways

6 June

MEL

20h 53m

1 stop

ORD

13 June

ORD

23h 01m

1 stop

MEL

$1,320

Qantas Airways

1 June

MEL

25h 05m

1 stop

ORD

22 June

ORD

31h 40m

1 stop

MEL

$1,321

Qantas Airways

5 June

MEL

29h 13m

1 stop

ORD

12 June

ORD

43h 40m

1 stop

MEL

$1,325

American Airlines

20 May

MEL

35h 02m

1 stop

ORD

4 June

ORD

22h 35m

1 stop

MEL

$1,332

American Airlines

1 June

MEL

23h 12m

1 stop

ORD

22 June

ORD

22h 35m

1 stop

MEL

$1,333

United Airlines

10 June

MEL

22h 45m

1 stop

ORD

17 June

ORD

25h 18m

1 stop

MEL

$1,336

American Airlines

1 June

MEL

23h 12m

2 stops

ORD

22 June

ORD

22h 35m

1 stop

MEL

$1,340

Qantas Airways

11 June

MEL

21h 56m

1 stop

ORD

18 June

ORD

31h 40m

1 stop

MEL

$1,344

United Airlines

22 May

MEL

20h 43m

1 stop

ORD

31 May

ORD

22h 55m

1 stop

MEL

$1,347

United Airlines

13 Aug

MEL

20h 47m

1 stop

ORD

23 Aug

ORD

27h 17m

2 stops

MEL

$1,349

Flights to Moline

Search all flight deals to Moline

American Airlines

4 Nov

BNE

41h 54m

2 stops

MLI

7 Nov

MLI

22h 55m

1 stop

BNE

$2,846

American Airlines

4 Nov

BNE

37h 30m

2 stops

MLI

7 Nov

MLI

22h 55m

1 stop

BNE

$2,872

American Airlines

4 Nov

BNE

24h 52m

2 stops

MLI

7 Nov

MLI

44h 13m

2 stops

BNE

$3,010

American Airlines

4 Nov

BNE

24h 52m

2 stops

MLI

7 Nov

MLI

43h 00m

2 stops

BNE

$3,038

American Airlines

4 Nov

BNE

29h 30m

1 stop

MLI

7 Nov

MLI

22h 55m

1 stop

BNE

$3,108

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 - 19:55

MEL

ORD

25h 10m

1 stop

14:59 - 05:00

ORD

MEL

23h 01m

1 stop

$1,316Qantas Airways

Sat, 6 Jun - Sat, 13 Jun

13:35 - 20:21

MEL

ORD

21h 46m

1 stop

15:20 - 06:45

ORD

MEL

24h 25m

1 stop

$1,317Qantas Airways

Wed, 27 May - Wed, 3 Jun

13:35 - 19:28

MEL

ORD

20h 53m

1 stop

14:59 - 05:00

ORD

MEL

23h 01m

1 stop

$1,320Qantas Airways

Sat, 6 Jun - Sat, 13 Jun

09:45 - 05:47

MEL

ORD

35h 02m

1 stop

17:10 - 06:45

ORD

MEL

22h 35m

1 stop

$1,332American Airlines

Wed, 20 May - Thu, 4 Jun

09:45 - 17:57

MEL

ORD

23h 12m

1 stop

17:10 - 06:45

ORD

MEL

22h 35m

1 stop

$1,333American Airlines

Mon, 1 Jun - Mon, 22 Jun

10:55 - 18:40

MEL

ORD

22h 45m

1 stop

15:57 - 08:15

ORD

MEL

25h 18m

1 stop

$1,336United Airlines

Wed, 10 Jun - Wed, 17 Jun

09:30 - 17:06

SYD

STL

22h 36m

2 stops

17:59 - 06:55

STL

SYD

45h 56m

2 stops

$1,441United Airlines

Wed, 12 Aug - Sat, 5 Sep

09:20 - 20:25

SYD

STL

50h 05m

2 stops

13:05 - 07:20

STL

SYD

51h 15m

2 stops

$1,569Air Canada

Mon, 8 Jun - Sun, 14 Jun

20:45 - 14:02

MEL

STL

56h 17m

3 stops

08:55 - 11:35

STL

MEL

35h 40m

3 stops

$1,913Air Canada

Thu, 6 Aug - Mon, 10 Aug

11:35 - 21:22

BNE

ORD

24h 47m

2 stops

18:19 - 10:40

ORD

BNE

25h 21m

2 stops

$2,060Fiji Airways

Tue, 21 Jul - Thu, 30 Jul

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 6/6

09:45-19:55

1 stop25h 10m

Chicago O'Hare Intl

Sat 13/6

14:59-05:00

1 stop23h 01m

$1,316

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 27/5

13:35-20:21

1 stop21h 46m

Chicago O'Hare Intl

Wed 3/6

15:20-06:45

1 stop24h 25m

$1,317

Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 6/6

13:35-19:28

1 stop20h 53m

Chicago O'Hare Intl

Sat 13/6

14:59-05:00

1 stop23h 01m

$1,320

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 20/5

09:45-05:47

1 stop35h 02m

Chicago O'Hare Intl

Thu 4/6

17:10-06:45

1 stop22h 35m

$1,332

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 1/6

09:45-17:57

1 stop23h 12m

Chicago O'Hare Intl

Mon 22/6

17:10-06:45

1 stop22h 35m

$1,333

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 10/6

10:55-18:40

1 stop22h 45m

Chicago O'Hare Intl

Wed 17/6

15:57-08:15

1 stop25h 18m

$1,336

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:30-17:06

2 stops22h 36m

Lambert-St Louis

Sat 5/9

17:59-06:55

2 stops45h 56m

$1,441

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 8/6

09:20-20:25

2 stops50h 05m

Lambert-St Louis

Sun 14/6

13:05-07:20

2 stops51h 15m

$1,569

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 6/8

20:45-14:02

3 stops56h 17m

Lambert-St Louis

Mon 10/8

08:55-11:35

3 stops35h 40m

$1,913

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 21/7

11:35-21:22

2 stops24h 47m

Chicago O'Hare Intl

Thu 30/7

18:19-10:40

2 stops25h 21m

$2,060

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 33% 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	$779
Best Round-Trip Price	$1,316
Fastest flight time	23h 33m

The best one-way flight price to Illinois from Australia in the last 72 hours is $779 (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 $1,316 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 23h 33m (Melbourne to Chicago Midway).

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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 $70/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $731/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, 33% 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.