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

Air Canada, ANA, and Delta are the most popular carriers operating from Chicago to Australia

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

Prices for flights from Chicago to Australia are updated daily.

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

As of September 2026, there is 1 operator available to choose from for flights from Chicago to Australia.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Chicago 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 licence 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.

$747 Cheap Flights from Chicago to Australia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Australia

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:40 - 07:05ORD Chicago O'Hare Intl-BNE Brisbane

24h 25m1 stop Vancouver Intl

10:00 - 14:43BNE Brisbane-ORD Chicago O'Hare Intl

19h 43m1 stop Vancouver Intl

$1,672Air Canada

Sun, 11 Oct - Sun, 18 Oct

15:40 - 07:05ORD Chicago O'Hare Intl-BNE Brisbane

24h 25m1 stop Vancouver Intl

10:00 - 14:43BNE Brisbane-ORD Chicago O'Hare Intl

19h 43m1 stop Vancouver Intl

$1,674Air Canada

Sun, 11 Oct - Sun, 18 Oct

08:49 - 07:05ORD Chicago O'Hare Intl-BNE Brisbane

31h 16m1 stop Vancouver Intl

10:00 - 20:12BNE Brisbane-ORD Chicago O'Hare Intl

25h 12m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,675Air Canada

Sun, 11 Oct - Sun, 18 Oct

08:49 - 07:05ORD Chicago O'Hare Intl-BNE Brisbane

31h 16m1 stop Vancouver Intl

10:00 - 20:12BNE Brisbane-ORD Chicago O'Hare Intl

25h 12m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,676Air Canada

Sun, 11 Oct - Sun, 18 Oct

08:45 - 07:05ORD Chicago O'Hare Intl-BNE Brisbane

31h 20m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

10:00 - 20:12BNE Brisbane-ORD Chicago O'Hare Intl

25h 12m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,678Air Canada

Sun, 11 Oct - Sun, 18 Oct

11:05 - 07:05ORD Chicago O'Hare Intl-BNE Brisbane

29h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

10:00 - 20:12BNE Brisbane-ORD Chicago O'Hare Intl

25h 12m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,679Air Canada

Sun, 11 Oct - Sun, 18 Oct

10:26 - 10:35ORD Chicago O'Hare Intl-BNE Brisbane

33h 09m3 stops Atlanta Hartsfield-Jackson Los Angeles Los Angeles Nadi

11:35 - 00:45BNE Brisbane-ORD Chicago O'Hare Intl

28h 10m3 stops Nadi Los Angeles Los Angeles Dallas/Fort Worth

$1,721Multiple Airlines

Mon, 14 Sep - Fri, 18 Sep

14:10 - 10:00ORD Chicago O'Hare Intl-BNE Brisbane

27h 50m2 stops Los Angeles Los Angeles Auckland Intl

08:20 - 23:02BNE Brisbane-ORD Chicago O'Hare Intl

30h 42m2 stops Auckland Intl Los Angeles Los Angeles

$1,724Air New Zealand

Mon, 22 Feb - Mon, 1 Mar

18:45 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 15m1 stop Los Angeles Los Angeles

11:20 - 16:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 45m1 stop Los Angeles Los Angeles

$2,198Qantas Airways

Tue, 1 Dec - Thu, 10 Dec

17:59 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 01m1 stop Los Angeles Los Angeles

11:15 - 23:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

29h 15m1 stop Los Angeles Los Angeles

$2,222Qantas Airways

Tue, 29 Dec - Sat, 23 Jan

Cheap last-minute flights

Enter your travel dates to find the best prices.

19:54 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

44h 26m2 stops Winnipeg Vancouver Intl

09:20 - 14:43SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 23m1 stop Vancouver Intl

$1,897Air Canada

Thu, 3 Sep - Thu, 10 Sep

19:54 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

44h 26m2 stops Winnipeg Vancouver Intl

09:20 - 22:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 45m2 stops Vancouver Intl Toronto Pearson Intl

$1,908Air Canada

Thu, 3 Sep - Thu, 10 Sep

08:44 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 36m2 stops Calgary Vancouver Intl

09:20 - 07:51SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 31m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,964Air Canada

Thu, 3 Sep - Thu, 10 Sep

08:44 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 36m2 stops Calgary Vancouver Intl

09:20 - 14:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 16m1 stop Vancouver Intl

$2,211Air Canada

Fri, 4 Sep - Mon, 7 Sep

14:20 - 22:40ORD Chicago O'Hare Intl-PER Perth

67h 20m2 stops Zurich Hong Kong Intl

08:20 - 12:35PER Perth-ORD Chicago O'Hare Intl

41h 15m2 stops Hong Kong Intl Zurich

$2,225SWISS

Sun, 6 Sep - Thu, 1 Oct

11:50 - 06:45ORD Chicago O'Hare Intl-BNE Brisbane

27h 55m1 stop Tokyo Narita

22:15 - 20:45BNE Brisbane-ORD Chicago O'Hare Intl

37h 30m1 stop Taipei City Taiwan Taoyuan Intl

$2,387Multiple Airlines

Thu, 3 Sep - Sat, 5 Sep

06:00 - 10:50ORD Chicago O'Hare Intl-BNE Brisbane

37h 50m2 stops Seattle/Tacoma Intl Hong Kong Intl

22:15 - 20:45BNE Brisbane-ORD Chicago O'Hare Intl

37h 30m1 stop Taipei City Taiwan Taoyuan Intl

$2,404Multiple Airlines

Thu, 3 Sep - Sat, 5 Sep

08:50 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 30m1 stop Toronto Pearson Intl

09:20 - 14:43SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 23m1 stop Vancouver Intl

$2,466Air New Zealand

Thu, 3 Sep - Thu, 10 Sep

15:40 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 40m1 stop Vancouver Intl

09:20 - 13:23SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

43h 03m1 stop Toronto Pearson Intl

$2,466Air New Zealand

Fri, 4 Sep - Mon, 7 Sep

19:00 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 05m1 stop Los Angeles Los Angeles

12:00 - 18:29SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 29m1 stop Dallas/Fort Worth

$3,081Qantas Airways

Fri, 4 Sep - Sun, 6 Sep

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ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

19 Oct

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD20:10Sydney Kingsford Smith

26 Oct

SYD21:45Sydney Kingsford Smith

26h 35m

1 stop

ORD08:20Chicago O'Hare Intl

$1,764

ANA

19 Oct

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD20:10Sydney Kingsford Smith

26 Oct

SYD21:45Sydney Kingsford Smith

26h 35m

1 stop

ORD08:20Chicago O'Hare Intl

$1,766

ANA

8 Dec

ORD16:25Chicago O'Hare Intl

34h 50m

1 stop

SYD20:15Sydney Kingsford Smith

28 Feb

SYD12:25Sydney Kingsford Smith

33h 40m

2 stops

ORD05:05Chicago O'Hare Intl

$1,770

Air New Zealand flights from Chicago to Australia

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

Air New Zealand

22 Feb

ORD14:10Chicago O'Hare Intl

27h 50m

2 stops

BNE10:00Brisbane

1 Mar

BNE08:20Brisbane

30h 42m

2 stops

ORD23:02Chicago O'Hare Intl

$1,724

Air New Zealand

26 Jan

ORD07:25Chicago O'Hare Intl

34h 35m

2 stops

BNE10:00Brisbane

9 Feb

BNE08:20Brisbane

28h 20m

2 stops

ORD20:40Chicago O'Hare Intl

$1,725

Air New Zealand

1 Feb

ORD15:51Chicago O'Hare Intl

25h 44m

2 stops

SYD10:35Sydney Kingsford Smith

3 Mar

SYD09:55Sydney Kingsford Smith

28h 43m

2 stops

ORD21:38Chicago O'Hare Intl

$1,728

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 11/10

15:40-07:05

1 stop24h 25m

Brisbane

Sun 18/10

10:00-14:43

1 stop19h 43m

$1,672

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 11/10

15:40-07:05

1 stop24h 25m

Brisbane

Sun 18/10

10:00-14:43

1 stop19h 43m

$1,674

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 11/10

08:49-07:05

1 stop31h 16m

Brisbane

Sun 18/10

10:00-20:12

2 stops25h 12m

$1,675

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 11/10

08:49-07:05

1 stop31h 16m

Brisbane

Sun 18/10

10:00-20:12

2 stops25h 12m

$1,676

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 11/10

08:45-07:05

2 stops31h 20m

Brisbane

Sun 18/10

10:00-20:12

2 stops25h 12m

$1,678

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 11/10

11:05-07:05

2 stops29h 00m

Brisbane

Sun 18/10

10:00-20:12

2 stops25h 12m

$1,679

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Mon 14/9

10:26-10:35

3 stops33h 09m

Brisbane

Fri 18/9

11:35-00:45

3 stops28h 10m

$1,721

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Mon 22/2

14:10-10:00

2 stops27h 50m

Brisbane

Mon 1/3

08:20-23:02

2 stops30h 42m

$1,724

Fastest return journey

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/12

18:45-09:00

1 stop21h 15m

Sydney Kingsford Smith

Thu 10/12

11:20-16:05

1 stop21h 45m

$2,198

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 29/12

17:59-09:00

1 stop22h 01m

Sydney Kingsford Smith

Sat 23/1

11:15-23:30

1 stop29h 15m

$2,222

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chicago 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

What is the cheapest month to fly to Australia?

In general, February is the cheapest month to fly from Chicago to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,822. If you don’t want to visit Australia in February, then you should wait until June to fly from Chicago, when ticket prices are also cheap, with an average price of $1,834.

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

You are more likely to see cheaper flights to Australia from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $2,001 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Chicago for as low as $1,534 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 8% on your flight if you consider stops on a Chicago to Australia flight.

Cheap Chicago to Australia flight deals and tips

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

Best price found	$747
Fastest flight time	20h 17m
Direct flights	None

The best one-way flight to Australia from Chicago in the past 72 hours is $747. The best return flight deal from Chicago to Australia found on momondo in the last 72 hours is $1,672.

The fastest flight from Chicago to Australia takes 20h 17m

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

Search flight deals

Frequently asked questions about flying from Chicago to Australia

When did momondo last update prices for flights from Chicago to Australia?
Prices for flights from Chicago to Australia are updated daily.
How many operators does momondo search for flights from Chicago to Australia?
As of September 2026, there is 1 operator available to choose from for flights from Chicago to Australia.
How old do you have to be to fly from Chicago to Australia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Chicago 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 licence 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 Chicago to Australia

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

Airline	Rating	Free cancellation	Price
Qantas Airways	PriceFrom $2,209	Free cancellation	Rating 7.5 1,087 reviews		Search Qantas Airways flights

Why use momondo?

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

Finding the right flight to Australia from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.

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

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

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

Once all potential Chicago to Australia 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 Chicago to Australia right now. Can momondo alert me if prices change?

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