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 24h 35m and 22h 06m, respectively.

$611 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

15 Aug

MEL

25h 14m

1 stop

ORD

22 Aug

ORD

27h 56m

1 stop

MEL

$1,311

Qantas Airways

10 Aug

MEL

25h 15m

1 stop

ORD

29 Aug

ORD

27h 56m

1 stop

MEL

$1,314

Multiple Airlines

9 Sept

SYD

36h 43m

3 stops

MDW

13 Sept

MDW

37h 25m

3 stops

SYD

$1,315

Qantas Airways

5 Aug

MEL

22h 06m

1 stop

ORD

22 Aug

ORD

22h 29m

1 stop

MEL

$1,323

Qantas Airways

5 Aug

MEL

22h 06m

1 stop

ORD

22 Aug

ORD

22h 29m

1 stop

MEL

$1,334

Qantas Airways

15 Aug

MEL

22h 03m

1 stop

ORD

11 Sept

ORD

24h 25m

1 stop

MEL

$1,342

American Airlines

5 Aug

MEL

23h 16m

2 stops

ORD

22 Aug

ORD

24h 23m

1 stop

MEL

$1,355

United Airlines

3 Aug

MEL

24h 45m

2 stops

ORD

31 Aug

ORD

22h 55m

1 stop

MEL

$1,367

American Airlines

15 Aug

MEL

24h 30m

2 stops

ORD

22 Aug

ORD

22h 29m

1 stop

MEL

$1,377

American Airlines

23 Aug

MEL

23h 30m

1 stop

ORD

30 Aug

ORD

24h 20m

2 stops

MEL

$1,380

American Airlines

10 Aug

MEL

21h 07m

1 stop

ORD

29 Aug

ORD

25h 14m

2 stops

MEL

$1,381

Lufthansa

11 Aug

MEL

24h 31m

1 stop

ORD

18 Aug

ORD

24h 55m

1 stop

MEL

$1,385

Flights to Moline

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American Airlines

4 Sept

BNE

29h 27m

2 stops

MLI

11 Sept

MLI

25h 52m

2 stops

BNE

$3,012

Multiple Airlines

4 Sept

BNE

40h 21m

3 stops

MLI

11 Sept

MLI

38h 22m

2 stops

BNE

$3,836

Emirates

3 Sept

BNE

37h 31m

2 stops

MLI

10 Sept

MLI

38h 11m

2 stops

BNE

$21,571

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 - 19:59

MEL

ORD

25h 14m

1 stop

11:49 - 06:45

ORD

MEL

27h 56m

1 stop

$1,311Qantas Airways

Sat, 15 Aug - Sat, 22 Aug

09:45 - 20:00

MEL

ORD

25h 15m

1 stop

11:49 - 06:45

ORD

MEL

27h 56m

1 stop

$1,314Qantas Airways

Mon, 10 Aug - Sat, 29 Aug

13:15 - 10:58

SYD

MDW

36h 43m

3 stops

07:25 - 11:50

MDW

SYD

37h 25m

3 stops

$1,315Multiple Airlines

Wed, 9 Sep - Sun, 13 Sep

09:45 - 18:01

MEL

ORD

23h 16m

2 stops

15:22 - 06:45

ORD

MEL

24h 23m

1 stop

$1,355American Airlines

Wed, 5 Aug - Sat, 22 Aug

10:55 - 20:40

MEL

ORD

24h 45m

2 stops

18:20 - 08:15

ORD

MEL

22h 55m

1 stop

$1,367United Airlines

Mon, 3 Aug - Mon, 31 Aug

13:30 - 23:00

MEL

ORD

24h 30m

2 stops

17:16 - 06:45

ORD

MEL

22h 29m

1 stop

$1,377American Airlines

Sat, 15 Aug - Sat, 22 Aug

10:30 - 16:37

SYD

STL

22h 07m

2 stops

13:08 - 09:05

STL

SYD

26h 57m

3 stops

$1,568United Airlines

Wed, 7 Oct - Wed, 11 Nov

20:45 - 20:24

MEL

STL

38h 39m

3 stops

08:55 - 11:05

STL

MEL

35h 10m

3 stops

$1,713Air Canada

Thu, 13 Aug - Mon, 17 Aug

20:45 - 20:24

MEL

STL

38h 39m

3 stops

08:55 - 11:05

STL

MEL

35h 10m

3 stops

$1,715Air Canada

Thu, 13 Aug - Mon, 17 Aug

10:55 - 21:42

OOL

ORD

25h 47m

2 stops

16:11 - 09:45

ORD

OOL

26h 34m

2 stops

$11,308Air New Zealand

Tue, 6 Oct - Wed, 14 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 15/8

09:45-19:59

1 stop25h 14m

Chicago O'Hare Intl

Sat 22/8

11:49-06:45

1 stop27h 56m

$1,311

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 10/8

09:45-20:00

1 stop25h 15m

Chicago O'Hare Intl

Sat 29/8

11:49-06:45

1 stop27h 56m

$1,314

SydneyChicago

SYD - MDW

SYDMDW

Sydney Kingsford Smith

Wed 9/9

13:15-10:58

3 stops36h 43m

Chicago Midway

Sun 13/9

07:25-11:50

3 stops37h 25m

$1,315

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 5/8

09:45-18:01

2 stops23h 16m

Chicago O'Hare Intl

Sat 22/8

15:22-06:45

1 stop24h 23m

$1,355

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 3/8

10:55-20:40

2 stops24h 45m

Chicago O'Hare Intl

Mon 31/8

18:20-08:15

1 stop22h 55m

$1,367

Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 15/8

13:30-23:00

2 stops24h 30m

Chicago O'Hare Intl

Sat 22/8

17:16-06:45

1 stop22h 29m

$1,377

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 7/10

10:30-16:37

2 stops22h 07m

Lambert-St Louis

Wed 11/11

13:08-09:05

3 stops26h 57m

$1,568

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 13/8

20:45-20:24

3 stops38h 39m

Lambert-St Louis

Mon 17/8

08:55-11:05

3 stops35h 10m

$1,713

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 13/8

20:45-20:24

3 stops38h 39m

Lambert-St Louis

Mon 17/8

08:55-11:05

3 stops35h 10m

$1,715

CoolangattaChicago

OOL - ORD

OOLORD

Coolangatta Gold Coast

Tue 6/10

10:55-21:42

2 stops25h 47m

Chicago O'Hare Intl

Wed 14/10

16:11-09:45

2 stops26h 34m

$11,308

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 New Zealand 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 30% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 8 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	$611
Best Round-Trip Price	$1,311
Fastest flight time	24h 22m

The best one-way flight price to Illinois from Australia in the last 5 days is $611 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The best return flight price to Illinois from Australia in the last 5 days is $1,311 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 24h 22m (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 $154/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $742/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 Water Tower and Chicago Riverwalk 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 8 airlines that fly to Illinois on a routine basis, but Qantas Airways, Air New Zealand and Air Canada 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 8 as of July 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.