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 19h 45m and 20h 49m, respectively.

$896 Cheap Flights to Illinois in 2026

Look for other cheap flights to Illinois

1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

American Airlines

17 Mar

BNE

37h 24m

2 stops

ORD

1 Apr

ORD

29h 35m

2 stops

BNE

$1,311

Air Canada

14 Apr

BNE

24h 58m

1 stop

ORD

28 Apr

ORD

24h 25m

1 stop

BNE

$1,320

Air Canada

14 Apr

BNE

24h 58m

1 stop

ORD

28 Apr

ORD

23h 55m

2 stops

BNE

$1,328

Air Canada

14 Apr

BNE

22h 04m

2 stops

ORD

28 Apr

ORD

23h 55m

2 stops

BNE

$1,335

Air Canada

25 Feb

BNE

19h 56m

1 stop

ORD

28 Feb

ORD

25h 10m

1 stop

BNE

$1,344

Air Canada

25 Feb

BNE

22h 20m

2 stops

ORD

28 Feb

ORD

25h 10m

1 stop

BNE

$1,352

Air Canada

28 July

SYD

20h 21m

1 stop

ORD

18 Aug

ORD

24h 40m

1 stop

SYD

$1,359

Air Canada

25 Feb

BNE

25h 25m

2 stops

ORD

28 Feb

ORD

30h 45m

2 stops

BNE

$1,362

Air Canada

23 Apr

SYD

20h 23m

1 stop

ORD

11 May

ORD

30h 25m

2 stops

SYD

$1,362

Air Canada

27 May

SYD

25h 48m

2 stops

ORD

3 June

ORD

53h 15m

2 stops

SYD

$1,368

Air Canada

19 Mar

SYD

37h 35m

2 stops

ORD

21 Apr

ORD

31h 30m

1 stop

SYD

$1,369

Air Canada

14 July

SYD

25h 45m

2 stops

ORD

4 Aug

ORD

29h 15m

2 stops

SYD

$1,372

Flights to Moline

Search all flight deals to Moline

American Airlines

31 Mar

BNE

30h 36m

2 stops

MLI

7 Apr

MLI

22h 12m

2 stops

BNE

$3,068

Emirates

29 Mar

BNE

58h 11m

2 stops

MLI

6 Apr

MLI

40h 00m

2 stops

BNE

$4,280

Emirates

30 Mar

BNE

58h 11m

2 stops

MLI

7 Apr

MLI

40h 00m

2 stops

BNE

$6,928

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.

10:10 - 22:58

MEL

STL

29h 48m

2 stops

07:15 - 07:00

STL

MEL

31h 45m

2 stops

$1,280Delta

Sun, 8 Mar - Mon, 23 Mar

19:40 - 18:04

BNE

ORD

37h 24m

2 stops

08:25 - 05:00

ORD

BNE

29h 35m

2 stops

$1,311American Airlines

Tue, 17 Mar - Wed, 1 Apr

10:00 - 19:58

BNE

ORD

24h 58m

1 stop

15:40 - 07:05

ORD

BNE

24h 25m

1 stop

$1,320Air Canada

Tue, 14 Apr - Tue, 28 Apr

10:00 - 19:58

BNE

ORD

24h 58m

1 stop

16:10 - 07:05

ORD

BNE

23h 55m

2 stops

$1,328Air Canada

Tue, 14 Apr - Tue, 28 Apr

10:00 - 17:04

BNE

ORD

22h 04m

2 stops

16:10 - 07:05

ORD

BNE

23h 55m

2 stops

$1,335Air Canada

Tue, 14 Apr - Tue, 28 Apr

10:45 - 14:41

BNE

ORD

19h 56m

1 stop

15:35 - 08:45

ORD

BNE

25h 10m

1 stop

$1,344Air Canada

Wed, 25 Feb - Sat, 28 Feb

09:30 - 00:29

SYD

STL

29h 59m

2 stops

19:06 - 06:55

STL

SYD

20h 49m

1 stop

$1,503United Airlines

Tue, 30 Jun - Wed, 22 Jul

10:20 - 17:53

SYD

STL

22h 33m

1 stop

19:06 - 06:55

STL

SYD

20h 49m

1 stop

$1,510United Airlines

Mon, 29 Jun - Wed, 22 Jul

07:50 - 23:47

ADL

ORD

31h 27m

2 stops

11:31 - 09:25

ORD

ADL

31h 24m

2 stops

$1,852Qantas Airways

Thu, 26 Mar - Sun, 5 Apr

12:05 - 01:27

ADL

ORD

27h 52m

2 stops

14:30 - 10:55

ORD

ADL

29h 55m

2 stops

$1,924Air New Zealand

Thu, 30 Apr - Fri, 15 May

Fly from

Route

Depart

Return

Price

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sun 8/3

10:10-22:58

2 stops29h 48m

Lambert-St Louis

Mon 23/3

07:15-07:00

2 stops31h 45m

$1,280

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

19:40-18:04

2 stops37h 24m

Chicago O'Hare Intl

Wed 1/4

08:25-05:00

2 stops29h 35m

$1,311

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 14/4

10:00-19:58

1 stop24h 58m

Chicago O'Hare Intl

Tue 28/4

15:40-07:05

1 stop24h 25m

$1,320

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 14/4

10:00-19:58

1 stop24h 58m

Chicago O'Hare Intl

Tue 28/4

16:10-07:05

2 stops23h 55m

$1,328

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 14/4

10:00-17:04

2 stops22h 04m

Chicago O'Hare Intl

Tue 28/4

16:10-07:05

2 stops23h 55m

$1,335

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 25/2

10:45-14:41

1 stop19h 56m

Chicago O'Hare Intl

Sat 28/2

15:35-08:45

1 stop25h 10m

$1,344

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 30/6

09:30-00:29

2 stops29h 59m

Lambert-St Louis

Wed 22/7

19:06-06:55

1 stop20h 49m

$1,503

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 29/6

10:20-17:53

1 stop22h 33m

Lambert-St Louis

Wed 22/7

19:06-06:55

1 stop20h 49m

$1,510

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 26/3

07:50-23:47

2 stops31h 27m

Chicago O'Hare Intl

Sun 5/4

11:31-09:25

2 stops31h 24m

$1,852

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 30/4

12:05-01:27

2 stops27h 52m

Chicago O'Hare Intl

Fri 15/5

14:30-10:55

2 stops29h 55m

$1,924

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 United Airlines 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 50% 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	$842
Best Round-Trip Price	$1,280
Fastest flight time	26h 45m

The best one-way flight price to Illinois from Australia in the last 72 hours is $842 (Sydney Kingsford Smith to Chicago O'Hare Intl).

Search Deals

The best round-trip flight price to Illinois from Australia in the last 72 hours is $1,280 (Melbourne to Lambert-St Louis).

Search Deals

The fastest flight to Illinois from Australia takes 26h 45m (Melbourne to Chicago Midway).

Search Deals

Frequently asked questions about flying to Illinois

What is the cheapest flight I can find to Illinois?

For prices as low as $70/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $790/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 United Airlines happen to be the most popular among our users. In the past year, 50% 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 February 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.