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 31m and 23h 33m, respectively.

$860 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

United Airlines

15 June

MEL

35h 21m

1 stop

ORD

28 June

ORD

43h 40m

1 stop

MEL

$1,355

United Airlines

12 July

MEL

25h 08m

1 stop

ORD

27 July

ORD

26h 00m

1 stop

MEL

$1,356

United Airlines

12 July

MEL

24h 35m

1 stop

ORD

29 July

ORD

25h 57m

2 stops

MEL

$1,359

Delta

24 July

MEL

27h 15m

2 stops

MDW

2 Aug

MDW

45h 44m

2 stops

MEL

$1,362

Delta

24 July

MEL

22h 35m

1 stop

ORD

2 Aug

ORD

45h 10m

2 stops

MEL

$1,362

Delta

24 July

MEL

27h 15m

2 stops

MDW

2 Aug

MDW

45h 44m

2 stops

MEL

$1,364

Delta

24 July

MEL

26h 29m

2 stops

ORD

2 Aug

ORD

45h 33m

2 stops

MEL

$1,364

Delta

24 July

MEL

27h 15m

2 stops

MDW

2 Aug

MDW

45h 44m

2 stops

MEL

$1,366

Delta

24 July

MEL

22h 35m

1 stop

ORD

2 Aug

ORD

45h 10m

2 stops

MEL

$1,366

Delta

24 July

MEL

27h 15m

2 stops

MDW

2 Aug

MDW

45h 44m

2 stops

MEL

$1,369

Delta

24 July

MEL

26h 52m

2 stops

ORD

2 Aug

ORD

45h 10m

2 stops

MEL

$1,369

American Airlines

14 June

MEL

23h 18m

2 stops

ORD

23 June

ORD

31h 26m

2 stops

MEL

$1,371

Flights to Moline

Search all flight deals to Moline

American Airlines

12 Nov

BNE

61h 30m

2 stops

MLI

16 Nov

MLI

27h 20m

1 stop

BNE

$2,793

American Airlines

12 Nov

BNE

49h 35m

2 stops

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$2,800

American Airlines

12 Nov

BNE

61h 30m

2 stops

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$2,801

American Airlines

12 Nov

BNE

41h 54m

2 stops

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$2,807

American Airlines

12 Nov

BNE

26h 30m

2 stops

MLI

16 Nov

MLI

31h 41m

2 stops

BNE

$3,043

American Airlines

12 Nov

BNE

25h 35m

2 stops

MLI

16 Nov

MLI

26h 40m

2 stops

BNE

$3,050

American Airlines

12 Nov

BNE

41h 54m

2 stops

MLI

16 Nov

MLI

68h 13m

2 stops

BNE

$3,053

American Airlines

12 Nov

BNE

26h 30m

2 stops

MLI

16 Nov

MLI

26h 27m

2 stops

BNE

$3,059

American Airlines

12 Nov

BNE

21h 49m

1 stop

MLI

16 Nov

MLI

27h 20m

1 stop

BNE

$3,063

American Airlines

12 Nov

BNE

29h 30m

1 stop

MLI

16 Nov

MLI

27h 20m

1 stop

BNE

$3,070

American Airlines

12 Nov

BNE

29h 30m

1 stop

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$3,073

American Airlines

12 Nov

BNE

21h 49m

1 stop

MLI

16 Nov

MLI

22h 55m

1 stop

BNE

$3,078

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.

10:55 - 07:16

MEL

ORD

35h 21m

1 stop

21:35 - 08:15

ORD

MEL

43h 40m

1 stop

$1,355United Airlines

Mon, 15 Jun - Sun, 28 Jun

09:30 - 00:59

MEL

ORD

30h 29m

2 stops

18:10 - 07:30

ORD

MEL

22h 20m

1 stop

$1,356United Airlines

Sun, 12 Jul - Mon, 27 Jul

09:30 - 19:05

MEL

ORD

24h 35m

1 stop

14:33 - 07:30

ORD

MEL

25h 57m

2 stops

$1,359United Airlines

Sun, 12 Jul - Wed, 29 Jul

06:00 - 14:18

MEL

ORD

23h 18m

2 stops

08:19 - 06:45

ORD

MEL

31h 26m

2 stops

$1,371American Airlines

Sun, 14 Jun - Tue, 23 Jun

09:30 - 19:05

MEL

ORD

24h 35m

1 stop

21:30 - 07:30

ORD

MEL

43h 00m

1 stop

$1,373Air New Zealand

Fri, 24 Jul - Sun, 2 Aug

11:15 - 06:01

SYD

ORD

34h 46m

1 stop

10:15 - 06:10

ORD

SYD

26h 55m

1 stop

$1,422American Airlines

Thu, 29 Oct - Sun, 1 Nov

09:45 - 23:59

MEL

STL

29h 14m

1 stop

06:37 - 06:45

STL

MEL

33h 08m

1 stop

$1,485Qantas Airways

Thu, 16 Jul - Thu, 23 Jul

12:00 - 18:14

SYD

STL

21h 14m

1 stop

15:32 - 06:55

STL

SYD

24h 23m

1 stop

$1,499Qantas Airways

Mon, 10 Aug - Fri, 4 Sep

22:55 - 19:35

PER

ORD

34h 40m

3 stops

15:40 - 21:35

ORD

PER

39h 55m

2 stops

$2,534Air Canada

Wed, 18 Nov - Wed, 2 Dec

22:55 - 19:35

PER

ORD

34h 40m

3 stops

15:40 - 20:10

ORD

PER

38h 30m

2 stops

$2,581Air Canada

Sun, 1 Nov - Sat, 21 Nov

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 15/6

10:55-07:16

1 stop35h 21m

Chicago O'Hare Intl

Sun 28/6

21:35-08:15

1 stop43h 40m

$1,355

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 12/7

09:30-00:59

2 stops30h 29m

Chicago O'Hare Intl

Mon 27/7

18:10-07:30

1 stop22h 20m

$1,356

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 12/7

09:30-19:05

1 stop24h 35m

Chicago O'Hare Intl

Wed 29/7

14:33-07:30

2 stops25h 57m

$1,359

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 14/6

06:00-14:18

2 stops23h 18m

Chicago O'Hare Intl

Tue 23/6

08:19-06:45

2 stops31h 26m

$1,371

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 24/7

09:30-19:05

1 stop24h 35m

Chicago O'Hare Intl

Sun 2/8

21:30-07:30

1 stop43h 00m

$1,373

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 29/10

11:15-06:01

1 stop34h 46m

Chicago O'Hare Intl

Sun 1/11

10:15-06:10

1 stop26h 55m

$1,422

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 16/7

09:45-23:59

1 stop29h 14m

Lambert-St Louis

Thu 23/7

06:37-06:45

1 stop33h 08m

$1,485

Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

12:00-18:14

1 stop21h 14m

Lambert-St Louis

Fri 4/9

15:32-06:55

1 stop24h 23m

$1,499

PerthChicago

PER - ORD

PERORD

Perth

Wed 18/11

22:55-19:35

3 stops34h 40m

Chicago O'Hare Intl

Wed 2/12

15:40-21:35

2 stops39h 55m

$2,534

PerthChicago

PER - ORD

PERORD

Perth

Sun 1/11

22:55-19:35

3 stops34h 40m

Chicago O'Hare Intl

Sat 21/11

15:40-20:10

2 stops38h 30m

$2,581

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 Air New Zealand 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 28% 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	$860
Best Round-Trip Price	$1,355
Fastest flight time	22h 04m

The best one-way flight price to Illinois from Australia in the last 5 days is $860 (Melbourne to Lambert-St Louis).

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The best round-trip flight price to Illinois from Australia in the last 5 days is $1,355 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 22h 04m (Melbourne 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 $129/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost $722/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 Air New Zealand happen to be the most popular among our users. In the past year, 28% 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.