What airlines fly to Australia?

Qantas Airways, United Airlines and Air Canada are the top three most popular airlines that fly to Australia from Illinois according to our data. Qantas Airways is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 10 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

How long is the flight from Illinois to Australia?

Flight times from Illinois to Australia vary, but if you’re flying out of Chicago and flying into Sydney (one of the most popular routes), then the duration is 25h 41m on average. Another popular route from Illinois to Australia is flying from Peoria to Sydney, which will take roughly 31h 10m. Keep in mind that layovers or delays could extend your travel time.

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

American Airlines, Fiji Airways, and Qantas Airways are the most popular carriers operating from Illinois to Australia

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

Prices for flights from Illinois to Australia refresh daily.

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

As of May 2026, there are 10 operators available to choose from for flights from Illinois to Australia.

How old do you have to be to fly from Illinois to Australia?

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 Illinois to Australia.

What documentation or ID do you need to fly to Australia?

The required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$559 Cheap Flights from Illinois to Australia in 2026

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Find the cheapest flights from Illinois to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 7:05 am

ORD

BNE

24h 25m

1 stop

10:15 am - 8:06 pm

BNE

ORD

24h 51m

1 stop

$1,019Air Canada

Tue, Sep 15 - Thu, Sep 24

6:35 am - 6:45 am

STL

MEL

33h 10m

1 stop

9:45 am - 11:59 pm

MEL

STL

29h 14m

1 stop

$1,030Qantas Airways

Mon, Jun 8 - Fri, Jul 31

7:00 am - 5:00 am

STL

MEL

31h 00m

1 stop

1:35 pm - 9:49 pm

MEL

STL

23h 14m

1 stop

$1,081American Airlines

Sat, Jul 4 - Sat, Jul 11

3:33 pm - 9:30 am

STL

MEL

25h 57m

2 stops

11:15 pm - 8:58 am

MEL

STL

26h 43m

2 stops

$1,085American Airlines

Tue, Oct 27 - Wed, Nov 11

7:15 am - 12:00 pm

ORD

MEL

37h 45m

3 stops

1:25 pm - 6:17 am

MEL

ORD

31h 52m

2 stops

$1,216Multiple Airlines

Thu, Aug 6 - Wed, Aug 12

6:18 pm - 7:20 pm

ORD

MEL

34h 02m

2 stops

7:30 am - 9:02 pm

MEL

ORD

28h 32m

2 stops

$1,267Multiple Airlines

Sat, Aug 8 - Thu, Aug 20

7:50 pm - 7:10 pm

ORD

SYD

32h 20m

2 stops

11:45 am - 8:40 am

SYD

ORD

35h 55m

1 stop

$1,271ANA

Wed, Aug 26 - Thu, Sep 3

5:45 pm - 7:10 pm

ORD

SYD

34h 25m

1 stop

11:45 am - 8:40 am

SYD

ORD

35h 55m

1 stop

$1,273ANA

Wed, Aug 26 - Tue, Sep 8

7:23 pm - 6:55 am

STL

SYD

20h 32m

1 stop

10:20 am - 6:17 pm

SYD

STL

22h 57m

1 stop

$1,331United Airlines

Wed, Jun 10 - Wed, Jun 17

11:25 am - 7:00 am

STL

SYD

28h 35m

2 stops

10:20 am - 6:17 pm

SYD

STL

22h 57m

1 stop

$1,336United Airlines

Wed, Jul 1 - Sun, Jul 19

ANA flights from Illinois to Australia

Our best ANA deals on Illinois to Australia flight tickets

ANA

Aug 26

ORD7:50 pmChicago O'Hare Intl

32h 20m

2 stops

SYD7:10 pmSydney Kingsford Smith

Sep 3

SYD11:45 amSydney Kingsford Smith

35h 55m

1 stop

ORD8:40 amChicago O'Hare Intl

$1,271

ANA

Aug 26

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Sep 8

SYD11:45 amSydney Kingsford Smith

35h 55m

1 stop

ORD8:40 amChicago O'Hare Intl

$1,273

ANA

Aug 26

ORD7:50 pmChicago O'Hare Intl

32h 20m

2 stops

SYD7:10 pmSydney Kingsford Smith

Sep 8

SYD11:45 amSydney Kingsford Smith

32h 00m

2 stops

ORD4:45 amChicago O'Hare Intl

$1,276

Air New Zealand flights from Illinois to Australia

Our best Air New Zealand deals on Illinois to Australia flight tickets

Air New Zealand

Jun 10

STL1:13 pmLambert-St Louis

26h 42m

2 stops

SYD6:55 amSydney Kingsford Smith

Jun 17

SYD10:20 amSydney Kingsford Smith

21h 13m

2 stops

STL4:33 pmLambert-St Louis

$1,335

Air New Zealand

Aug 22

STL4:40 pmLambert-St Louis

47h 20m

2 stops

SYD7:00 amSydney Kingsford Smith

Sep 8

SYD9:30 amSydney Kingsford Smith

22h 04m

2 stops

STL4:34 pmLambert-St Louis

$1,351

Air New Zealand

Aug 26

STL1:36 pmLambert-St Louis

26h 24m

2 stops

SYD7:00 amSydney Kingsford Smith

Sep 12

SYD10:20 amSydney Kingsford Smith

25h 18m

2 stops

STL8:38 pmLambert-St Louis

$1,385

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 9/15

3:40 pm-7:05 am

1 stop24h 25m

Brisbane

Thu 9/24

10:15 am-8:06 pm

1 stop24h 51m

$1,019

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Mon 6/8

6:35 am-6:45 am

1 stop33h 10m

Melbourne

Fri 7/31

9:45 am-11:59 pm

1 stop29h 14m

$1,030

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Sat 7/4

7:00 am-5:00 am

1 stop31h 00m

Melbourne

Sat 7/11

1:35 pm-9:49 pm

1 stop23h 14m

$1,081

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 10/27

3:33 pm-9:30 am

2 stops25h 57m

Melbourne

Wed 11/11

11:15 pm-8:58 am

2 stops26h 43m

$1,085

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 8/6

7:15 am-12:00 pm

3 stops37h 45m

Melbourne

Wed 8/12

1:25 pm-6:17 am

2 stops31h 52m

$1,216

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sat 8/8

6:18 pm-7:20 pm

2 stops34h 02m

Melbourne

Thu 8/20

7:30 am-9:02 pm

2 stops28h 32m

$1,267

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/26

7:50 pm-7:10 pm

2 stops32h 20m

Sydney Kingsford Smith

Thu 9/3

11:45 am-8:40 am

1 stop35h 55m

$1,271

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/26

5:45 pm-7:10 pm

1 stop34h 25m

Sydney Kingsford Smith

Tue 9/8

11:45 am-8:40 am

1 stop35h 55m

$1,273

Quickest round-trip

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 6/10

7:23 pm-6:55 am

1 stop20h 32m

Sydney Kingsford Smith

Wed 6/17

10:20 am-6:17 pm

1 stop22h 57m

$1,331

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 7/1

11:25 am-7:00 am

2 stops28h 35m

Sydney Kingsford Smith

Sun 7/19

10:20 am-6:17 pm

1 stop22h 57m

$1,336

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 Illinois to Australia

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 Australia?

The month of November is, on average, the cheapest month to fly to Australia from Illinois, with most prices found around $113. If you aren’t able to travel during the month of November, then book flights to Australia from Illinois during August instead. Flights to Australia in August, while not as cheap as those in November, still average around $138.

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

You are more likely to see cheaper flights to Australia from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,390 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Illinois for as low as $1,126 on momondo.

Can stopping save me money on Illinois to Australia flights?

You could potentially save up to 18% on your flight if you consider stops on a Illinois to Australia flight.

Cheap Illinois to Australia flight deals and tips

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

Fastest flight time	20h 20m
Direct flights	None

The fastest flight from Illinois to Australia takes 20h 20m

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

Search flight deals

Frequently asked questions about flying from Illinois to Australia

When did momondo last update prices for flights from Illinois to Australia?
Prices for flights from Illinois to Australia refresh daily.
How many operators does momondo search for flights from Illinois to Australia?
As of May 2026, there are 10 operators available to choose from for flights from Illinois to Australia.
How old do you have to be to fly from Illinois to Australia?
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 Illinois to Australia.
What documentation or ID do you need to fly to Australia?
The required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Australia

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $198	Free Cancellation	Rating 7.1 11,630 reviews	Search American Airlines flights
Delta	PriceFrom $317	Free Cancellation	Rating 7.9 8,428 reviews	Search Delta flights
Air Canada	PriceFrom $712	Free Cancellation	Rating 7.1 11,086 reviews	Search Air Canada flights
Fiji Airways	PriceFrom $716	Free Cancellation	Rating 8.1 242 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $836	Free Cancellation	Rating 7.5 1,042 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 9,751 reviews	Search United Airlines flights
ANA	PriceFrom $1,193	Free Cancellation	Rating 8.3 1,215 reviews	Search ANA flights
Air New Zealand	PriceFrom $1,217	Free Cancellation	Rating 8.0 648 reviews	Search Air New Zealand flights
Qatar Airways	PriceFrom $1,263	Free Cancellation	Rating 7.4 3,726 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,502	Free Cancellation	Rating 7.6 1,344 reviews	Search Cathay Pacific flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Australia for you.

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

Yes. All flights to Australia from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 help filter your options to help you make an informed choice when booking flights to Australia from Illinois.

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

Of course. momondo tracks the price of Illinois to Australia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.