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 06m and 23h 02m, respectively.

$870 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

11 Aug

MEL

23h 02m

1 stop

ORD

21 Aug

ORD

22h 30m

1 stop

MEL

$1,325

Qantas Airways

6 June

MEL

20h 53m

1 stop

ORD

13 June

ORD

23h 01m

1 stop

MEL

$1,336

American Airlines

10 June

MEL

21h 04m

1 stop

ORD

17 June

ORD

24h 22m

1 stop

MEL

$1,348

Qantas Airways

6 June

MEL

27h 14m

1 stop

ORD

13 June

ORD

27h 41m

1 stop

MEL

$1,361

United Airlines

5 June

MEL

25h 46m

2 stops

ORD

14 June

ORD

24h 30m

2 stops

MEL

$1,362

United Airlines

5 June

MEL

24h 45m

1 stop

ORD

23 June

ORD

25h 49m

1 stop

MEL

$1,364

United Airlines

1 June

MEL

24h 16m

2 stops

ORD

30 June

ORD

25h 03m

2 stops

MEL

$1,365

United Airlines

1 June

MEL

20h 43m

1 stop

ORD

30 June

ORD

30h 45m

2 stops

MEL

$1,366

Delta

19 June

MEL

37h 37m

2 stops

MDW

8 July

MDW

31h 01m

2 stops

MEL

$1,373

Delta

19 June

MEL

23h 58m

2 stops

ORD

7 July

ORD

45h 10m

2 stops

MEL

$1,373

Delta

24 July

MEL

27h 15m

2 stops

MDW

2 Aug

MDW

45h 44m

2 stops

MEL

$1,375

Delta

24 July

MEL

28h 18m

1 stop

ORD

2 Aug

ORD

45h 10m

2 stops

MEL

$1,375

Flights to Moline

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Multiple Airlines

27 June

BNE

45h 00m

2 stops

MLI

4 July

MLI

37h 42m

2 stops

BNE

$3,322

Multiple Airlines

27 June

BNE

45h 00m

2 stops

MLI

4 July

MLI

40h 57m

3 stops

BNE

$3,348

Multiple Airlines

27 June

BNE

39h 00m

3 stops

MLI

4 July

MLI

40h 57m

3 stops

BNE

$3,644

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 - 17:47

MEL

ORD

23h 02m

1 stop

17:15 - 06:45

ORD

MEL

22h 30m

1 stop

$1,325Qantas Airways

Tue, 11 Aug - Thu, 20 Aug

13:35 - 19:28

MEL

ORD

20h 53m

1 stop

14:59 - 05:00

ORD

MEL

23h 01m

1 stop

$1,336Qantas Airways

Sat, 6 Jun - Sat, 13 Jun

09:45 - 15:49

MEL

ORD

21h 04m

1 stop

15:23 - 06:45

ORD

MEL

24h 22m

1 stop

$1,348American Airlines

Wed, 10 Jun - Wed, 17 Jun

09:45 - 21:59

MEL

ORD

27h 14m

1 stop

12:04 - 06:45

ORD

MEL

27h 41m

1 stop

$1,361Qantas Airways

Sat, 6 Jun - Sat, 13 Jun

09:30 - 20:16

MEL

ORD

25h 46m

2 stops

16:45 - 08:15

ORD

MEL

24h 30m

2 stops

$1,362United Airlines

Fri, 5 Jun - Sun, 14 Jun

10:55 - 20:40

MEL

ORD

24h 45m

1 stop

15:26 - 08:15

ORD

MEL

25h 49m

1 stop

$1,364United Airlines

Fri, 5 Jun - Tue, 23 Jun

09:10 - 19:52

SYD

ORD

25h 42m

2 stops

19:01 - 07:05

ORD

SYD

21h 04m

1 stop

$1,442American Airlines

Tue, 8 Sep - Mon, 21 Sep

20:30 - 20:09

MEL

STL

38h 39m

3 stops

14:15 - 11:35

STL

MEL

30h 20m

3 stops

$1,934Air Canada

Wed, 3 Jun - Sun, 7 Jun

06:00 - 14:02

MEL

STL

47h 02m

3 stops

08:55 - 11:35

STL

MEL

35h 40m

3 stops

$2,014Air Canada

Thu, 6 Aug - Mon, 10 Aug

18:50 - 20:22

PER

ORD

39h 32m

2 stops

11:00 - 16:50

ORD

PER

39h 50m

2 stops

$2,609Air New Zealand

Tue, 3 Nov - Wed, 11 Nov

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Tue 11/8

09:45-17:47

1 stop23h 02m

Chicago O'Hare Intl

Thu 20/8

17:15-06:45

1 stop22h 30m

$1,325

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

$1,336

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 10/6

09:45-15:49

1 stop21h 04m

Chicago O'Hare Intl

Wed 17/6

15:23-06:45

1 stop24h 22m

$1,348

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 6/6

09:45-21:59

1 stop27h 14m

Chicago O'Hare Intl

Sat 13/6

12:04-06:45

1 stop27h 41m

$1,361

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 5/6

09:30-20:16

2 stops25h 46m

Chicago O'Hare Intl

Sun 14/6

16:45-08:15

2 stops24h 30m

$1,362

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 5/6

10:55-20:40

1 stop24h 45m

Chicago O'Hare Intl

Tue 23/6

15:26-08:15

1 stop25h 49m

$1,364

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 8/9

09:10-19:52

2 stops25h 42m

Chicago O'Hare Intl

Mon 21/9

19:01-07:05

1 stop21h 04m

$1,442

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 3/6

20:30-20:09

3 stops38h 39m

Lambert-St Louis

Sun 7/6

14:15-11:35

3 stops30h 20m

$1,934

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 6/8

06:00-14:02

3 stops47h 02m

Lambert-St Louis

Mon 10/8

08:55-11:35

3 stops35h 40m

$2,014

PerthChicago

PER - ORD

PERORD

Perth

Tue 3/11

18:50-20:22

2 stops39h 32m

Chicago O'Hare Intl

Wed 11/11

11:00-16:50

2 stops39h 50m

$2,609

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	$870
Best Round-Trip Price	$1,325
Fastest flight time	22h 23m

The best one-way flight price to Illinois from Australia in the last 72 hours is $870 (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 $1,325 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 22h 23m (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 $71/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $740/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.