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 26h 21m and 21h 09m, respectively.

$839 Cheap Flights to Illinois in 2026

Look for other cheap flights to Illinois

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

Qantas Airways

9 Aug

MEL

23h 02m

1 stop

ORD

22 Aug

ORD

27h 56m

1 stop

MEL

$1,322

Qantas Airways

3 Aug

MEL

21h 09m

1 stop

ORD

12 Aug

ORD

22h 29m

1 stop

MEL

$1,325

Qantas Airways

3 Aug

MEL

21h 09m

1 stop

ORD

12 Aug

ORD

22h 29m

1 stop

MEL

$1,326

Qantas Airways

8 Aug

MEL

22h 44m

1 stop

ORD

15 Aug

ORD

24h 23m

1 stop

MEL

$1,332

Multiple Airlines

6 Aug

SYD

42h 36m

3 stops

MDW

11 Aug

MDW

33h 44m

3 stops

SYD

$1,335

Multiple Airlines

12 Aug

SYD

39h 12m

2 stops

ORD

19 Aug

ORD

35h 30m

3 stops

SYD

$1,337

American Airlines

27 July

MEL

28h 45m

2 stops

ORD

10 Aug

ORD

30h 45m

1 stop

MEL

$1,342

Qantas Airways

5 Aug

MEL

21h 07m

1 stop

ORD

12 Aug

ORD

24h 23m

1 stop

MEL

$1,345

Multiple Airlines

6 Aug

SYD

42h 36m

3 stops

MDW

11 Aug

MDW

33h 44m

3 stops

SYD

$1,352

United Airlines

17 July

MEL

20h 05m

1 stop

ORD

7 Aug

ORD

29h 36m

2 stops

MEL

$1,355

United Airlines

3 Aug

MEL

27h 21m

2 stops

ORD

12 Aug

ORD

24h 55m

2 stops

MEL

$1,357

United Airlines

27 July

MEL

28h 50m

2 stops

ORD

10 Aug

ORD

24h 18m

2 stops

MEL

$1,358

Flights to Moline

Search all flight deals to Moline

Multiple Airlines

9 Aug

BNE

23h 32m

2 stops

MLI

16 Aug

MLI

43h 15m

2 stops

BNE

$2,817

Multiple Airlines

12 Aug

BNE

28h 19m

2 stops

MLI

19 Aug

MLI

26h 17m

3 stops

BNE

$2,859

Multiple Airlines

9 Aug

BNE

30h 49m

3 stops

MLI

16 Aug

MLI

29h 43m

2 stops

BNE

$3,017

Multiple Airlines

12 Aug

BNE

41h 36m

3 stops

MLI

19 Aug

MLI

37h 57m

3 stops

BNE

$3,034

Multiple Airlines

9 Aug

BNE

30h 49m

3 stops

MLI

16 Aug

MLI

32h 47m

3 stops

BNE

$3,091

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 - 17:47

MEL

ORD

23h 02m

1 stop

11:49 - 06:45

ORD

MEL

27h 56m

1 stop

$1,322Qantas Airways

Sun, 9 Aug - Sat, 22 Aug

13:35 - 19:44

MEL

ORD

21h 09m

1 stop

17:16 - 06:45

ORD

MEL

22h 29m

1 stop

$1,325Qantas Airways

Mon, 3 Aug - Wed, 12 Aug

09:45 - 23:30

MEL

ORD

28h 45m

2 stops

09:00 - 06:45

ORD

MEL

30h 45m

1 stop

$1,342American Airlines

Mon, 27 Jul - Mon, 10 Aug

09:30 - 14:35

MEL

ORD

20h 05m

1 stop

10:54 - 07:30

ORD

MEL

29h 36m

2 stops

$1,355United Airlines

Fri, 17 Jul - Fri, 7 Aug

10:55 - 23:16

MEL

ORD

27h 21m

2 stops

15:35 - 07:30

ORD

MEL

24h 55m

2 stops

$1,357United Airlines

Mon, 3 Aug - Wed, 12 Aug

12:00 - 16:28

SYD

STL

19h 28m

1 stop

06:00 - 07:05

STL

SYD

34h 05m

1 stop

$1,397American Airlines

Wed, 15 Jul - Thu, 3 Sep

09:55 - 21:34

SYD

ORD

28h 39m

2 stops

13:00 - 08:45

ORD

SYD

26h 45m

2 stops

$1,664Air New Zealand

Wed, 11 Nov - Mon, 16 Nov

11:45 - 21:34

SYD

ORD

26h 49m

2 stops

13:00 - 10:30

ORD

SYD

28h 30m

2 stops

$1,679Air New Zealand

Wed, 11 Nov - Sun, 15 Nov

12:20 - 13:55

BNE

ORD

40h 35m

1 stop

14:35 - 23:10

ORD

BNE

40h 35m

1 stop

$1,954Cathay Pacific

Tue, 20 Oct - Thu, 19 Nov

12:20 - 13:55

BNE

ORD

40h 35m

1 stop

14:35 - 23:10

ORD

BNE

40h 35m

1 stop

$1,956Cathay Pacific

Tue, 20 Oct - Thu, 19 Nov

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 9/8

09:45-17:47

1 stop23h 02m

Chicago O'Hare Intl

Sat 22/8

11:49-06:45

1 stop27h 56m

$1,322

Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 3/8

13:35-19:44

1 stop21h 09m

Chicago O'Hare Intl

Wed 12/8

17:16-06:45

1 stop22h 29m

$1,325

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 27/7

09:45-23:30

2 stops28h 45m

Chicago O'Hare Intl

Mon 10/8

09:00-06:45

1 stop30h 45m

$1,342

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 17/7

09:30-14:35

1 stop20h 05m

Chicago O'Hare Intl

Fri 7/8

10:54-07:30

2 stops29h 36m

$1,355

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 3/8

10:55-23:16

2 stops27h 21m

Chicago O'Hare Intl

Wed 12/8

15:35-07:30

2 stops24h 55m

$1,357

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 15/7

12:00-16:28

1 stop19h 28m

Lambert-St Louis

Thu 3/9

06:00-07:05

1 stop34h 05m

$1,397

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 11/11

09:55-21:34

2 stops28h 39m

Chicago O'Hare Intl

Mon 16/11

13:00-08:45

2 stops26h 45m

$1,664

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 11/11

11:45-21:34

2 stops26h 49m

Chicago O'Hare Intl

Sun 15/11

13:00-10:30

2 stops28h 30m

$1,679

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 20/10

12:20-13:55

1 stop40h 35m

Chicago O'Hare Intl

Thu 19/11

14:35-23:10

1 stop40h 35m

$1,954

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 20/10

12:20-13:55

1 stop40h 35m

Chicago O'Hare Intl

Thu 19/11

14:35-23:10

1 stop40h 35m

$1,956

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

Find flights to Chicago

Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$839
Best Round-Trip Price	$1,322
Fastest flight time	23h 30m

The best one-way flight price to Illinois from Australia in the last 5 days is $839 (Melbourne to Chicago O'Hare Intl).

Search Deals

The best round-trip flight price to Illinois from Australia in the last 5 days is $1,322 (Melbourne to Chicago O'Hare Intl).

Search Deals

The fastest flight to Illinois from Australia takes 23h 30m (Melbourne to Lambert-St Louis).

Search Deals

Frequently asked questions about flying to Illinois

What is the cheapest flight I can find to Illinois?

For prices as low as $133/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $685/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 June 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.