How long is the flight from Australia to Illinois?

The flight from Australia to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Melbourne (a popular airport in Australia) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 21h 09m on average. If you fly from Sydney (another popular airport in Australia) to Chicago O'Hare Intl Airport, then the average flight time is 23h 13m.

What is the cheapest airline that flies from Australia to Illinois?

Cathay Pacific, Delta, and United Airlines are the most popular carriers operating from Australia to Illinois

What airlines fly to Illinois?

Qantas Airways, United Airlines and Japan 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 36% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Australia to Illinois?

Prices for flights from Australia to Illinois were last updated today.

How many operators does momondo search for flights from Australia to Illinois?

There are 4 operators available for flights from Australia to Illinois as of August 2026.

How old do you have to be to fly from Australia 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 layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Australia 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 license, 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.

$482 Cheap Flights from Australia to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Australia to Illinois

Round-trip

One-way

Last minute

Recent round-trip flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

6:15 am - 6:17 am

SYD

ORD

39h 02m

2 stops

6:20 am - 10:25 pm

ORD

SYD

49h 05m

3 stops

$818Multiple Airlines

Tue, Sep 8 - Tue, Sep 22

1:15 pm - 6:17 am

SYD

ORD

32h 02m

2 stops

6:30 am - 10:25 pm

ORD

SYD

48h 55m

3 stops

$835Multiple Airlines

Tue, Sep 8 - Tue, Sep 22

10:00 am - 7:51 am

BNE

ORD

36h 51m

2 stops

8:40 am - 7:45 am

ORD

BNE

32h 05m

2 stops

$889Air Canada

Thu, Oct 15 - Wed, Oct 28

10:00 am - 7:51 am

BNE

ORD

36h 51m

2 stops

3:30 pm - 7:45 am

ORD

BNE

25h 15m

1 stop

$890Air Canada

Thu, Oct 15 - Wed, Oct 28

2:35 pm - 6:20 pm

MEL

STL

19h 45m

1 stop

6:04 am - 9:30 am

STL

MEL

35h 26m

1 stop

$1,132Qantas Airways

Wed, Oct 21 - Wed, Oct 28

10:30 am - 3:14 pm

BNE

MLI

43h 44m

2 stops

6:32 am - 6:30 am

MLI

BNE

56h 58m

2 stops

$1,163United Airlines

Tue, Sep 15 - Sat, Oct 10

10:30 am - 5:26 pm

BNE

MLI

21h 56m

2 stops

6:32 am - 6:30 am

MLI

BNE

32h 58m

2 stops

$1,170United Airlines

Wed, Sep 16 - Sun, Oct 11

10:00 pm - 11:00 pm

SYD

ORD

40h 00m

2 stops

3:54 pm - 8:15 am

ORD

SYD

25h 21m

2 stops

$1,326Qantas Airways

Fri, Aug 21 - Sat, Sep 5

12:15 pm - 7:45 am

PER

ORD

56h 30m

2 stops

2:10 pm - 10:40 pm

ORD

PER

43h 30m

2 stops

$2,035Japan Airlines

Fri, Aug 28 - Fri, Sep 4

12:10 am - 7:45 am

PER

ORD

44h 35m

2 stops

2:30 pm - 12:40 am

ORD

PER

45h 10m

2 stops

$2,177Japan Airlines

Wed, Aug 19 - Sun, Aug 23

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Air Canada flights from Australia to Illinois

Our best Air Canada deals on Australia to Illinois flight tickets

Air Canada

Oct 15

BNE10:00 amBrisbane

36h 51m

2 stops

ORD7:51 amChicago O'Hare Intl

Oct 28

ORD8:40 amChicago O'Hare Intl

32h 05m

2 stops

BNE7:45 amBrisbane

$889

Air Canada

Oct 15

BNE10:00 amBrisbane

36h 51m

2 stops

ORD7:51 amChicago O'Hare Intl

Oct 28

ORD3:30 pmChicago O'Hare Intl

25h 15m

1 stop

BNE7:45 amBrisbane

$890

Air Canada

Oct 15

BNE10:00 amBrisbane

19h 43m

1 stop

ORD2:43 pmChicago O'Hare Intl

Oct 28

ORD3:30 pmChicago O'Hare Intl

25h 15m

1 stop

BNE7:45 amBrisbane

$908

Emirates flights from Australia to Illinois

Our best Emirates deals on Australia to Illinois flight tickets

Emirates

Sep 1

ADL10:00 pmAdelaide

32h 15m

1 stop

ORD3:45 pmChicago O'Hare Intl

Sep 6

ORD8:35 pmChicago O'Hare Intl

33h 00m

1 stop

ADL8:05 pmAdelaide

$2,583

Emirates

Aug 15

PER10:20 pmPerth

30h 35m

1 stop

ORD3:55 pmChicago O'Hare Intl

Aug 29

ORD8:35 pmChicago O'Hare Intl

32h 00m

1 stop

PER5:35 pmPerth

$2,638

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 9/8

6:15 am-6:17 am

2 stops39h 02m

Chicago O'Hare Intl

Tue 9/22

6:20 am-10:25 pm

3 stops49h 05m

$818

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 9/8

1:15 pm-6:17 am

2 stops32h 02m

Chicago O'Hare Intl

Tue 9/22

6:30 am-10:25 pm

3 stops48h 55m

$835

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 10/15

10:00 am-7:51 am

2 stops36h 51m

Chicago O'Hare Intl

Wed 10/28

8:40 am-7:45 am

2 stops32h 05m

$889

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 10/15

10:00 am-7:51 am

2 stops36h 51m

Chicago O'Hare Intl

Wed 10/28

3:30 pm-7:45 am

1 stop25h 15m

$890

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 10/21

2:35 pm-6:20 pm

1 stop19h 45m

Lambert-St Louis

Wed 10/28

6:04 am-9:30 am

1 stop35h 26m

$1,132

BrisbaneMoline

BNE - MLI

BNEMLI

Brisbane

Tue 9/15

10:30 am-3:14 pm

2 stops43h 44m

Moline Quad-City

Sat 10/10

6:32 am-6:30 am

2 stops56h 58m

$1,163

Quickest round-trip

BrisbaneMoline

BNE - MLI

BNEMLI

Brisbane

Wed 9/16

10:30 am-5:26 pm

2 stops21h 56m

Moline Quad-City

Sun 10/11

6:32 am-6:30 am

2 stops32h 58m

$1,170

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 8/21

10:00 pm-11:00 pm

2 stops40h 00m

Chicago O'Hare Intl

Sat 9/5

3:54 pm-8:15 am

2 stops25h 21m

$1,326

PerthChicago

PER - ORD

PERORD

Perth

Fri 8/28

12:15 pm-7:45 am

2 stops56h 30m

Chicago O'Hare Intl

Fri 9/4

2:10 pm-10:40 pm

2 stops43h 30m

$2,035

PerthChicago

PER - ORD

PERORD

Perth

Wed 8/19

12:10 am-7:45 am

2 stops44h 35m

Chicago O'Hare Intl

Sun 8/23

2:30 pm-12:40 am

2 stops45h 10m

$2,177

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Australia to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Australia is in May. Flight prices, which tend to average around $1,126, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of May, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $1,138.

How far in advance should I book a flight from Australia to Illinois?

You are more likely to see cheaper flights to Illinois from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $1,370 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Australia for as low as $1,027 on momondo.

Cheap Australia to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Australia to Illinois

Fastest flight time	21h 09m
Direct flights	None

The fastest flight from Australia to Illinois takes 21h 09m

There are no direct flights from Australia to Illinois. There are no popular flight routes from Australia to Illinois.

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Frequently asked questions about flying from Australia to Illinois

When did momondo last update prices for flights from Australia to Illinois?
Prices for flights from Australia to Illinois were last updated today.
How many operators does momondo search for flights from Australia to Illinois?
There are 4 operators available for flights from Australia to Illinois as of August 2026.
How old do you have to be to fly from Australia 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 layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Australia 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 license, 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.

Best airlines flying from Australia to Illinois

Compare and see reviews for airlines that fly from Australia to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $862	Free Cancellation	Rating 7.1 11,420 reviews	Search Air Canada flights
United Airlines	PriceFrom $902	Free Cancellation	Rating 7.4 10,058 reviews	Search United Airlines flights
Japan Airlines	PriceFrom $965	Free Cancellation	Rating 8.3 1,889 reviews	Search Japan Airlines flights
Qantas Airways	PriceFrom $970	Free Cancellation	Rating 7.5 1,074 reviews	Search Qantas Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Australia to Illinois?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Australia to Illinois. momondo saves you time and could save you money on your trip.

Can I find flights from Australia to Illinois with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Australia to Illinois flights to just show those with flexible booking policies.

How can momondo help me find flights from Australia to Illinois?

Once all potential Australia to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Australia to Illinois right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Australia and alert you when they change.