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 21h 39m and 22h 45m, respectively.

$687 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

8 May

MEL

31h 29m

2 stops

ORD

31 May

ORD

38h 10m

2 stops

MEL

$1,481

Multiple Airlines

4 May

SYD

31h 35m

2 stops

ORD

8 May

ORD

36h 20m

3 stops

SYD

$1,496

Multiple Airlines

9 May

SYD

31h 44m

2 stops

ORD

31 May

ORD

37h 35m

2 stops

SYD

$1,524

ANA

8 Sept

SYD

32h 00m

2 stops

ORD

11 Sept

ORD

34h 25m

1 stop

SYD

$1,594

ANA

2 Sept

SYD

32h 00m

2 stops

ORD

11 Sept

ORD

24h 40m

1 stop

SYD

$1,677

Multiple Airlines

5 May

SYD

32h 19m

2 stops

MDW

20 May

MDW

34h 30m

2 stops

SYD

$1,697

Multiple Airlines

19 May

SYD

27h 49m

1 stop

ORD

26 May

ORD

43h 44m

1 stop

SYD

$1,698

Multiple Airlines

2 June

SYD

27h 14m

1 stop

ORD

9 June

ORD

33h 35m

2 stops

SYD

$1,712

Multiple Airlines

19 May

SYD

27h 49m

1 stop

ORD

26 May

ORD

42h 53m

2 stops

SYD

$1,729

ANA

13 July

SYD

26h 45m

1 stop

ORD

10 Aug

ORD

31h 52m

2 stops

SYD

$1,732

Multiple Airlines

9 May

SYD

27h 09m

1 stop

ORD

24 May

ORD

33h 15m

1 stop

SYD

$1,744

Multiple Airlines

3 June

SYD

31h 04m

2 stops

ORD

10 June

ORD

24h 24m

2 stops

SYD

$1,748

Flights to Moline

Search all flight deals to Moline

Multiple Airlines

30 May

BNE

29h 02m

2 stops

MLI

6 June

MLI

26h 51m

2 stops

BNE

$2,989

Multiple Airlines

30 May

BNE

28h 24m

2 stops

MLI

6 June

MLI

32h 08m

3 stops

BNE

$3,021

Multiple Airlines

30 May

BNE

46h 05m

3 stops

MLI

6 June

MLI

38h 43m

3 stops

BNE

$3,147

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 - 05:59

MEL

ORD

31h 29m

2 stops

07:15 - 12:25

ORD

MEL

38h 10m

2 stops

$1,481Multiple Airlines

Fri, 8 May - Sun, 31 May

13:15 - 05:50

SYD

ORD

31h 35m

2 stops

08:30 - 11:50

ORD

SYD

36h 20m

3 stops

$1,496Multiple Airlines

Mon, 4 May - Fri, 8 May

13:15 - 05:59

SYD

ORD

31h 44m

2 stops

07:15 - 11:50

ORD

SYD

37h 35m

2 stops

$1,524Multiple Airlines

Sat, 9 May - Sun, 31 May

20:30 - 12:06

MEL

STL

54h 36m

3 stops

07:05 - 11:35

STL

MEL

37h 30m

3 stops

$1,580Air Canada

Tue, 12 May - Tue, 19 May

09:45 - 23:59

MEL

STL

29h 14m

1 stop

06:21 - 06:45

STL

MEL

33h 24m

1 stop

$1,693Qantas Airways

Tue, 12 May - Tue, 19 May

20:30 - 12:06

MEL

STL

54h 36m

3 stops

14:15 - 11:05

STL

MEL

29h 50m

3 stops

$1,727Air Canada

Mon, 1 Jun - Mon, 8 Jun

09:10 - 23:56

SYD

STL

29h 46m

1 stop

06:35 - 07:05

STL

SYD

33h 30m

1 stop

$2,017Qantas Airways

Mon, 1 Jun - Mon, 8 Jun

10:55 - 09:02

MEL

BMI

61h 07m

2 stops

09:44 - 08:15

BMI

MEL

31h 31m

2 stops

$2,102United Airlines

Sat, 30 May - Sat, 6 Jun

12:10 - 22:30

MEL

STL

26h 20m

2 stops

06:15 - 10:55

STL

MEL

36h 40m

2 stops

$2,192Air New Zealand

Thu, 8 Oct - Mon, 12 Oct

08:35 - 22:06

MEL

STL

29h 31m

2 stops

16:17 - 10:55

STL

MEL

26h 38m

2 stops

$2,240Air New Zealand

Thu, 15 Oct - Mon, 19 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 8/5

13:30-05:59

2 stops31h 29m

Chicago O'Hare Intl

Sun 31/5

07:15-12:25

2 stops38h 10m

$1,481

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 4/5

13:15-05:50

2 stops31h 35m

Chicago O'Hare Intl

Fri 8/5

08:30-11:50

3 stops36h 20m

$1,496

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 9/5

13:15-05:59

2 stops31h 44m

Chicago O'Hare Intl

Sun 31/5

07:15-11:50

2 stops37h 35m

$1,524

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Tue 12/5

20:30-12:06

3 stops54h 36m

Lambert-St Louis

Tue 19/5

07:05-11:35

3 stops37h 30m

$1,580

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Tue 12/5

09:45-23:59

1 stop29h 14m

Lambert-St Louis

Tue 19/5

06:21-06:45

1 stop33h 24m

$1,693

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 1/6

20:30-12:06

3 stops54h 36m

Lambert-St Louis

Mon 8/6

14:15-11:05

3 stops29h 50m

$1,727

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 1/6

09:10-23:56

1 stop29h 46m

Lambert-St Louis

Mon 8/6

06:35-07:05

1 stop33h 30m

$2,017

MelbourneBloomington

MEL - BMI

MELBMI

Melbourne

Sat 30/5

10:55-09:02

2 stops61h 07m

Bloomington-Normal

Sat 6/6

09:44-08:15

2 stops31h 31m

$2,102

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 8/10

12:10-22:30

2 stops26h 20m

Lambert-St Louis

Mon 12/10

06:15-10:55

2 stops36h 40m

$2,192

Fastest return journey

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 15/10

08:35-22:06

2 stops29h 31m

Lambert-St Louis

Mon 19/10

16:17-10:55

2 stops26h 38m

$2,240

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, United Airlines and Air Canada 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 32% 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	$687
Best Round-Trip Price	$1,481
Fastest flight time	23h 33m

The best one-way flight price to Illinois from Australia in the last 72 hours is $687 (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 $1,481 (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 $128/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $849/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, United Airlines and Air Canada happen to be the most popular among our users. In the past year, 32% 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 April 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.