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 15m and 22h 39m, respectively.

$882 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

Qantas Airways

1 June

MEL

25h 05m

1 stop

ORD

22 June

ORD

42h 50m

1 stop

MEL

$1,340

United Airlines

1 June

MEL

22h 56m

2 stops

ORD

12 June

ORD

24h 33m

2 stops

MEL

$1,351

United Airlines

10 June

MEL

22h 45m

1 stop

ORD

17 June

ORD

25h 49m

1 stop

MEL

$1,355

Qantas Airways

27 July

MEL

21h 14m

1 stop

ORD

10 Aug

ORD

41h 10m

1 stop

MEL

$1,358

Delta

24 July

MEL

24h 30m

2 stops

ORD

2 Aug

ORD

45h 33m

2 stops

MEL

$1,361

Delta

24 July

MEL

28h 18m

1 stop

ORD

2 Aug

ORD

45h 33m

2 stops

MEL

$1,365

Delta

5 June

MEL

26h 09m

2 stops

MDW

21 June

MDW

45h 34m

2 stops

MEL

$1,366

Delta

5 June

MEL

26h 50m

2 stops

ORD

21 June

ORD

45h 13m

2 stops

MEL

$1,366

Delta

24 July

MEL

28h 18m

1 stop

ORD

2 Aug

ORD

44h 29m

2 stops

MEL

$1,368

Multiple Airlines

5 June

MEL

22h 34m

1 stop

ORD

21 June

ORD

26h 45m

1 stop

MEL

$1,376

American Airlines

1 June

MEL

24h 29m

2 stops

ORD

22 June

ORD

24h 22m

1 stop

MEL

$1,383

American Airlines

1 June

MEL

21h 07m

1 stop

ORD

22 June

ORD

24h 36m

2 stops

MEL

$1,404

Flights to Moline

Search all flight deals to Moline

Qatar Airways

27 June

BNE

35h 10m

2 stops

MLI

3 July

MLI

44h 22m

2 stops

BNE

$17,957

Multiple Airlines

27 June

BNE

38h 25m

3 stops

MLI

3 July

MLI

44h 22m

2 stops

BNE

$18,616

Multiple Airlines

27 June

BNE

30h 01m

3 stops

MLI

3 July

MLI

27h 45m

3 stops

BNE

$26,571

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.

09:45 - 19:50

MEL

ORD

25h 05m

1 stop

20:55 - 06:45

ORD

MEL

42h 50m

1 stop

$1,340Qantas Airways

Mon, 1 Jun - Mon, 22 Jun

10:55 - 18:51

MEL

ORD

22h 56m

2 stops

15:57 - 07:30

ORD

MEL

24h 33m

2 stops

$1,351United Airlines

Mon, 1 Jun - Fri, 12 Jun

09:30 - 17:05

MEL

ORD

22h 35m

2 stops

16:12 - 07:30

ORD

MEL

24h 18m

2 stops

$1,355United Airlines

Wed, 10 Jun - Wed, 17 Jun

09:45 - 15:59

MEL

ORD

21h 14m

1 stop

22:35 - 06:45

ORD

MEL

41h 10m

1 stop

$1,358Qantas Airways

Mon, 27 Jul - Mon, 10 Aug

14:30 - 23:59

MEL

ORD

24h 29m

2 stops

15:23 - 06:45

ORD

MEL

24h 22m

1 stop

$1,383American Airlines

Mon, 1 Jun - Mon, 22 Jun

09:10 - 16:33

SYD

STL

22h 23m

2 stops

20:39 - 07:05

STL

SYD

43h 26m

2 stops

$1,415American Airlines

Thu, 4 Jun - Sat, 13 Jun

09:20 - 16:33

SYD

STL

22h 13m

2 stops

16:48 - 07:20

STL

SYD

23h 32m

2 stops

$1,453Air Canada

Thu, 11 Jun - Wed, 17 Jun

20:30 - 20:09

MEL

STL

38h 39m

3 stops

08:40 - 11:35

STL

MEL

35h 55m

3 stops

$1,916Air Canada

Wed, 3 Jun - Sun, 7 Jun

12:10 - 12:55

BNE

ORD

40h 45m

1 stop

14:35 - 23:10

ORD

BNE

40h 35m

1 stop

$1,929Cathay Pacific

Thu, 5 Nov - Mon, 9 Nov

12:10 - 12:55

BNE

ORD

40h 45m

1 stop

14:35 - 10:30

ORD

BNE

27h 55m

1 stop

$2,031Cathay Pacific

Thu, 5 Nov - Mon, 9 Nov

Fly from

Route

Depart

Return

Price

Cheapest return flight

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 1/6

09:45-19:50

1 stop25h 05m

Chicago O'Hare Intl

Mon 22/6

20:55-06:45

1 stop42h 50m

$1,340

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 1/6

10:55-18:51

2 stops22h 56m

Chicago O'Hare Intl

Fri 12/6

15:57-07:30

2 stops24h 33m

$1,351

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 10/6

09:30-17:05

2 stops22h 35m

Chicago O'Hare Intl

Wed 17/6

16:12-07:30

2 stops24h 18m

$1,355

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 27/7

09:45-15:59

1 stop21h 14m

Chicago O'Hare Intl

Mon 10/8

22:35-06:45

1 stop41h 10m

$1,358

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 1/6

14:30-23:59

2 stops24h 29m

Chicago O'Hare Intl

Mon 22/6

15:23-06:45

1 stop24h 22m

$1,383

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 4/6

09:10-16:33

2 stops22h 23m

Lambert-St Louis

Sat 13/6

20:39-07:05

2 stops43h 26m

$1,415

Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 11/6

09:20-16:33

2 stops22h 13m

Lambert-St Louis

Wed 17/6

16:48-07:20

2 stops23h 32m

$1,453

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 3/6

20:30-20:09

3 stops38h 39m

Lambert-St Louis

Sun 7/6

08:40-11:35

3 stops35h 55m

$1,916

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 5/11

12:10-12:55

1 stop40h 45m

Chicago O'Hare Intl

Mon 9/11

14:35-23:10

1 stop40h 35m

$1,929

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 5/11

12:10-12:55

1 stop40h 45m

Chicago O'Hare Intl

Mon 9/11

14:35-10:30

1 stop27h 55m

$2,031

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 33% 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	$882
Best Round-Trip Price	$1,340
Fastest flight time	26h 50m

The best one-way flight price to Illinois from Australia in the last 72 hours is $882 (Sydney Kingsford Smith to Lambert-St Louis).

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The best round-trip flight price to Illinois from Australia in the last 72 hours is $1,340 (Melbourne to Chicago O'Hare Intl).

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The fastest flight to Illinois from Australia takes 26h 50m (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 $71/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 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, 33% 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 May 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.