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 29m and 22h 03m, 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

Multiple Airlines

12 Aug

SYD

39h 12m

2 stops

ORD

19 Aug

ORD

35h 30m

3 stops

SYD

$1,290

Multiple Airlines

12 Aug

SYD

39h 12m

2 stops

ORD

19 Aug

ORD

35h 30m

3 stops

SYD

$1,296

Qantas Airways

3 Aug

MEL

25h 23m

1 stop

ORD

22 Aug

ORD

27h 56m

1 stop

MEL

$1,313

Qantas Airways

15 Aug

MEL

28h 15m

1 stop

ORD

11 Sept

ORD

43h 10m

1 stop

MEL

$1,314

Qantas Airways

3 Aug

MEL

25h 23m

1 stop

ORD

22 Aug

ORD

27h 56m

1 stop

MEL

$1,317

Multiple Airlines

15 Aug

MEL

22h 03m

1 stop

ORD

11 Sept

ORD

25h 55m

1 stop

MEL

$1,335

American Airlines

4 Aug

MEL

21h 14m

1 stop

ORD

11 Aug

ORD

27h 56m

1 stop

MEL

$1,336

Multiple Airlines

14 Aug

MEL

21h 09m

1 stop

ORD

29 Aug

ORD

24h 23m

1 stop

MEL

$1,337

Qantas Airways

3 Aug

MEL

23h 27m

1 stop

ORD

22 Aug

ORD

28h 45m

1 stop

MEL

$1,345

American Airlines

24 July

MEL

23h 27m

1 stop

ORD

2 Aug

ORD

27h 16m

1 stop

MEL

$1,349

American Airlines

4 Aug

MEL

21h 14m

1 stop

ORD

11 Aug

ORD

27h 56m

1 stop

MEL

$1,350

American Airlines

24 July

MEL

23h 23m

2 stops

ORD

2 Aug

ORD

22h 35m

1 stop

MEL

$1,355

Flights to Moline

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Emirates

23 Aug

BNE

37h 31m

2 stops

MLI

30 Aug

MLI

46h 16m

2 stops

BNE

$5,183

American Airlines

13 Sept

BNE

47h 53m

2 stops

MLI

25 Oct

MLI

31h 50m

2 stops

BNE

$5,870

American Airlines

13 Sept

BNE

47h 53m

2 stops

MLI

30 Oct

MLI

22h 52m

1 stop

BNE

$5,873

American Airlines

13 Sept

BNE

46h 18m

2 stops

MLI

30 Oct

MLI

28h 09m

2 stops

BNE

$5,879

American Airlines

14 Sept

BNE

39h 03m

2 stops

MLI

28 Oct

MLI

51h 29m

2 stops

BNE

$5,882

American Airlines

13 Sept

BNE

40h 38m

2 stops

MLI

27 Oct

MLI

33h 02m

2 stops

BNE

$5,892

American Airlines

13 Sept

BNE

40h 38m

2 stops

MLI

26 Oct

MLI

26h 52m

2 stops

BNE

$5,911

American Airlines

18 Sept

BNE

30h 48m

2 stops

MLI

29 Oct

MLI

27h 29m

2 stops

BNE

$5,980

American Airlines

18 Sept

BNE

39h 03m

2 stops

MLI

29 Oct

MLI

22h 52m

1 stop

BNE

$5,984

American Airlines

18 Sept

BNE

46h 18m

2 stops

MLI

24 Oct

MLI

45h 53m

2 stops

BNE

$5,991

American Airlines

18 Sept

BNE

46h 18m

2 stops

MLI

27 Oct

MLI

33h 02m

2 stops

BNE

$6,001

American Airlines

18 Sept

BNE

30h 48m

2 stops

MLI

28 Oct

MLI

26h 17m

2 stops

BNE

$6,020

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.

06:05 - 06:17

SYD

ORD

39h 12m

2 stops

09:20 - 11:50

ORD

SYD

35h 30m

3 stops

$1,290Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

06:05 - 06:17

SYD

ORD

39h 12m

2 stops

09:20 - 11:50

ORD

SYD

35h 30m

3 stops

$1,296Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

09:45 - 20:08

MEL

ORD

25h 23m

1 stop

11:49 - 06:45

ORD

MEL

27h 56m

1 stop

$1,313Qantas Airways

Mon, 3 Aug - Sat, 22 Aug

09:45 - 23:00

MEL

ORD

28h 15m

1 stop

18:50 - 05:00

ORD

MEL

43h 10m

1 stop

$1,314Qantas Airways

Sat, 15 Aug - Fri, 11 Sep

10:20 - 17:59

SYD

STL

22h 39m

1 stop

08:42 - 06:55

STL

SYD

31h 13m

1 stop

$1,572United Airlines

Thu, 10 Sep - Sun, 13 Sep

10:30 - 07:54

SYD

ORD

37h 24m

2 stops

16:05 - 07:55

ORD

SYD

23h 50m

1 stop

$1,573United Airlines

Tue, 13 Oct - Wed, 14 Oct

12:20 - 00:59

BNE

ORD

27h 39m

2 stops

15:00 - 11:05

ORD

BNE

29h 05m

2 stops

$1,754Air New Zealand

Tue, 18 Aug - Sun, 6 Sep

19:50 - 22:59

PER

ORD

40h 09m

2 stops

16:45 - 22:15

ORD

PER

40h 30m

2 stops

$2,044Air New Zealand

Sun, 2 Aug - Tue, 25 Aug

20:00 - 08:00

ADL

ORD

50h 30m

3 stops

15:40 - 15:55

ORD

ADL

33h 45m

2 stops

$2,997Air Canada

Tue, 25 Aug - Thu, 1 Oct

20:00 - 19:52

ADL

ORD

38h 22m

3 stops

14:15 - 15:55

ORD

ADL

35h 10m

3 stops

$3,008Air Canada

Tue, 25 Aug - Thu, 1 Oct

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 12/8

06:05-06:17

2 stops39h 12m

Chicago O'Hare Intl

Wed 19/8

09:20-11:50

3 stops35h 30m

$1,290

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 12/8

06:05-06:17

2 stops39h 12m

Chicago O'Hare Intl

Wed 19/8

09:20-11:50

3 stops35h 30m

$1,296

Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 3/8

09:45-20:08

1 stop25h 23m

Chicago O'Hare Intl

Sat 22/8

11:49-06:45

1 stop27h 56m

$1,313

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 15/8

09:45-23:00

1 stop28h 15m

Chicago O'Hare Intl

Fri 11/9

18:50-05:00

1 stop43h 10m

$1,314

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 10/9

10:20-17:59

1 stop22h 39m

Lambert-St Louis

Sun 13/9

08:42-06:55

1 stop31h 13m

$1,572

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 13/10

10:30-07:54

2 stops37h 24m

Chicago O'Hare Intl

Wed 14/10

16:05-07:55

1 stop23h 50m

$1,573

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 18/8

12:20-00:59

2 stops27h 39m

Chicago O'Hare Intl

Sun 6/9

15:00-11:05

2 stops29h 05m

$1,754

PerthChicago

PER - ORD

PERORD

Perth

Sun 2/8

19:50-22:59

2 stops40h 09m

Chicago O'Hare Intl

Tue 25/8

16:45-22:15

2 stops40h 30m

$2,044

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 25/8

20:00-08:00

3 stops50h 30m

Chicago O'Hare Intl

Thu 1/10

15:40-15:55

2 stops33h 45m

$2,997

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 25/8

20:00-19:52

3 stops38h 22m

Chicago O'Hare Intl

Thu 1/10

14:15-15:55

3 stops35h 10m

$3,008

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 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

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Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$870
Best Round-Trip Price	$1,290
Fastest flight time	24h 22m

The best one-way flight price to Illinois from Australia in the last 5 days is $870 (Sydney Kingsford Smith to Lambert-St Louis).

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The best return flight price to Illinois from Australia in the last 5 days is $1,290 (Sydney Kingsford Smith 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 $132/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $693/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 9 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 9 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.