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 23h 47m and 24h 39m, respectively.

$690 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

1 May

SYD

31h 35m

2 stops

ORD

16 May

ORD

48h 15m

3 stops

SYD

$1,511

Multiple Airlines

29 Apr

SYD

31h 53m

3 stops

ORD

5 May

ORD

32h 10m

3 stops

SYD

$1,516

Multiple Airlines

28 Apr

SYD

25h 12m

2 stops

ORD

4 May

ORD

37h 35m

2 stops

SYD

$1,536

Multiple Airlines

29 Apr

SYD

31h 35m

2 stops

ORD

5 May

ORD

42h 30m

3 stops

SYD

$1,538

Multiple Airlines

8 May

MEL

31h 29m

2 stops

ORD

15 May

ORD

37h 50m

2 stops

MEL

$1,549

Multiple Airlines

1 May

SYD

31h 35m

2 stops

ORD

16 May

ORD

48h 15m

3 stops

SYD

$1,553

Multiple Airlines

27 May

SYD

46h 17m

3 stops

ORD

3 June

ORD

37h 55m

3 stops

SYD

$1,559

Multiple Airlines

24 May

SYD

31h 44m

2 stops

ORD

31 May

ORD

37h 35m

2 stops

SYD

$1,579

Multiple Airlines

1 May

SYD

41h 58m

3 stops

MDW

16 May

MDW

49h 10m

3 stops

SYD

$1,591

Multiple Airlines

30 July

SYD

46h 38m

3 stops

ORD

1 Aug

ORD

35h 17m

3 stops

SYD

$1,624

Multiple Airlines

1 May

SYD

31h 20m

2 stops

ORD

16 May

ORD

37h 35m

2 stops

SYD

$1,630

Multiple Airlines

1 May

SYD

31h 20m

2 stops

ORD

16 May

ORD

37h 35m

2 stops

SYD

$1,632

Flights to Moline

Search all flight deals to Moline

Multiple Airlines

27 May

BNE

29h 02m

2 stops

MLI

3 June

MLI

27h 03m

2 stops

BNE

$2,856

Multiple Airlines

27 May

BNE

29h 02m

2 stops

MLI

3 June

MLI

33h 33m

3 stops

BNE

$2,890

Multiple Airlines

23 May

BNE

29h 02m

2 stops

MLI

30 May

MLI

23h 29m

2 stops

BNE

$2,963

Multiple Airlines

23 May

BNE

31h 15m

3 stops

MLI

30 May

MLI

23h 29m

2 stops

BNE

$3,010

Multiple Airlines

27 May

BNE

46h 05m

3 stops

MLI

3 June

MLI

47h 49m

3 stops

BNE

$3,027

Multiple Airlines

27 Apr

BNE

44h 14m

3 stops

MLI

30 Apr

MLI

39h 42m

2 stops

BNE

$3,164

Multiple Airlines

27 Apr

BNE

44h 14m

3 stops

MLI

30 Apr

MLI

43h 14m

3 stops

BNE

$3,191

Multiple Airlines

23 May

BNE

46h 05m

3 stops

MLI

30 May

MLI

47h 53m

3 stops

BNE

$3,520

Multiple Airlines

27 Apr

BNE

29h 59m

2 stops

MLI

30 Apr

MLI

22h 12m

2 stops

BNE

$3,787

Multiple Airlines

27 June

BNE

38h 47m

2 stops

MLI

6 July

MLI

43h 35m

3 stops

BNE

$11,479

Multiple Airlines

20 Aug

BNE

46h 00m

3 stops

MLI

17 Sept

MLI

44h 01m

2 stops

BNE

$12,132

Multiple Airlines

20 Aug

BNE

46h 00m

3 stops

MLI

17 Sept

MLI

44h 36m

3 stops

BNE

$12,159

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.

13:15 - 05:50

SYD

ORD

31h 35m

2 stops

06:55 - 22:10

ORD

SYD

48h 15m

3 stops

$1,511Multiple Airlines

Fri, 1 May - Sat, 16 May

13:15 - 06:08

SYD

ORD

31h 53m

3 stops

12:40 - 11:50

ORD

SYD

32h 10m

3 stops

$1,516Multiple Airlines

Wed, 29 Apr - Tue, 5 May

13:15 - 23:27

SYD

ORD

25h 12m

2 stops

07:15 - 11:50

ORD

SYD

37h 35m

2 stops

$1,536Multiple Airlines

Tue, 28 Apr - Mon, 4 May

13:15 - 05:50

SYD

ORD

31h 35m

2 stops

12:40 - 22:10

ORD

SYD

42h 30m

3 stops

$1,538Multiple Airlines

Wed, 29 Apr - Tue, 5 May

06:00 - 12:06

MEL

STL

45h 06m

3 stops

14:15 - 11:35

STL

MEL

30h 20m

3 stops

$1,556Air Canada

Fri, 29 May - Tue, 2 Jun

06:00 - 12:06

MEL

STL

45h 06m

3 stops

08:40 - 11:05

STL

MEL

35h 25m

3 stops

$1,557Air Canada

Fri, 29 May - Tue, 2 Jun

13:35 - 18:30

MEL

STL

19h 55m

1 stop

17:11 - 05:00

STL

MEL

20h 49m

1 stop

$1,601Qantas Airways

Sat, 23 May - Sat, 30 May

10:55 - 18:22

MEL

STL

22h 27m

1 stop

19:06 - 08:15

STL

MEL

22h 09m

1 stop

$1,610United Airlines

Wed, 6 May - Wed, 13 May

18:00 - 12:35

OOL

ORD

33h 35m

2 stops

18:59 - 15:05

ORD

OOL

29h 06m

2 stops

$2,631Qantas Airways

Tue, 26 May - Tue, 2 Jun

11:55 - 21:36

OOL

ORD

24h 41m

2 stops

20:04 - 10:45

ORD

OOL

47h 41m

2 stops

$2,694Air New Zealand

Sat, 23 May - Sat, 30 May

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 1/5

13:15-05:50

2 stops31h 35m

Chicago O'Hare Intl

Sat 16/5

06:55-22:10

3 stops48h 15m

$1,511

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 29/4

13:15-06:08

3 stops31h 53m

Chicago O'Hare Intl

Tue 5/5

12:40-11:50

3 stops32h 10m

$1,516

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 28/4

13:15-23:27

2 stops25h 12m

Chicago O'Hare Intl

Mon 4/5

07:15-11:50

2 stops37h 35m

$1,536

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 29/4

13:15-05:50

2 stops31h 35m

Chicago O'Hare Intl

Tue 5/5

12:40-22:10

3 stops42h 30m

$1,538

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 29/5

06:00-12:06

3 stops45h 06m

Lambert-St Louis

Tue 2/6

14:15-11:35

3 stops30h 20m

$1,556

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 29/5

06:00-12:06

3 stops45h 06m

Lambert-St Louis

Tue 2/6

08:40-11:05

3 stops35h 25m

$1,557

Fastest return journey

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sat 23/5

13:35-18:30

1 stop19h 55m

Lambert-St Louis

Sat 30/5

17:11-05:00

1 stop20h 49m

$1,601

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 6/5

10:55-18:22

1 stop22h 27m

Lambert-St Louis

Wed 13/5

19:06-08:15

1 stop22h 09m

$1,610

CoolangattaChicago

OOL - ORD

OOLORD

Coolangatta Gold Coast

Tue 26/5

18:00-12:35

2 stops33h 35m

Chicago O'Hare Intl

Tue 2/6

18:59-15:05

2 stops29h 06m

$2,631

CoolangattaChicago

OOL - ORD

OOLORD

Coolangatta Gold Coast

Sat 23/5

11:55-21:36

2 stops24h 41m

Chicago O'Hare Intl

Sat 30/5

20:04-10:45

2 stops47h 41m

$2,694

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

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Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$690
Best Round-Trip Price	$1,511
Fastest flight time	38h 44m

The best one-way flight price to Illinois from Australia in the last 72 hours is $690 (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 $1,511 (Sydney Kingsford Smith to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 38h 44m (Sydney Kingsford Smith to Chicago O'Hare Intl).

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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 $130/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $862/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.