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

Alaska Airlines, Philippine Airlines, and Air New Zealand 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 October 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.

$840 Cheap Flights from Chicago to Australia in 2026/27

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.

08:58 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

31h 47m1 stop Vancouver Intl

10:45 - 20:02BNE Brisbane-ORD Chicago O'Hare Intl

25h 17m1 stop Vancouver Intl

$1,520Air Canada

Mon, 1 Feb - Sat, 13 Feb

08:40 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

32h 05m2 stops Calgary Vancouver Intl

10:45 - 19:52BNE Brisbane-ORD Chicago O'Hare Intl

25h 07m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,526Air Canada

Mon, 1 Feb - Sat, 13 Feb

13:57 - 08:45ORD Chicago O'Hare Intl-BNE Brisbane

26h 48m2 stops Toronto Pearson Intl Vancouver Intl

10:45 - 16:50BNE Brisbane-ORD Chicago O'Hare Intl

46h 05m2 stops Vancouver Intl Calgary

$1,532Air Canada

Fri, 26 Feb - Mon, 8 Mar

15:35 - 13:30ORD Chicago O'Hare Intl-BNE Brisbane

29h 55m2 stops Vancouver Intl Sydney Kingsford Smith

18:05 - 19:02BNE Brisbane-ORD Chicago O'Hare Intl

40h 57m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

$1,547Air Canada

Mon, 1 Feb - Sat, 13 Feb

15:35 - 15:30ORD Chicago O'Hare Intl-BNE Brisbane

31h 55m2 stops Vancouver Intl Sydney Kingsford Smith

10:45 - 14:32BNE Brisbane-ORD Chicago O'Hare Intl

19h 47m1 stop Vancouver Intl

$1,553Air Canada

Fri, 29 Jan - Sun, 14 Feb

15:35 - 15:30ORD Chicago O'Hare Intl-BNE Brisbane

31h 55m2 stops Vancouver Intl Sydney Kingsford Smith

10:45 - 20:02BNE Brisbane-ORD Chicago O'Hare Intl

25h 17m1 stop Vancouver Intl

$1,554Air Canada

Fri, 29 Jan - Sun, 14 Feb

15:35 - 15:30ORD Chicago O'Hare Intl-BNE Brisbane

31h 55m2 stops Vancouver Intl Sydney Kingsford Smith

10:45 - 19:52BNE Brisbane-ORD Chicago O'Hare Intl

25h 07m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,557Air Canada

Fri, 29 Jan - Sun, 14 Feb

15:35 - 15:30ORD Chicago O'Hare Intl-BNE Brisbane

31h 55m2 stops Vancouver Intl Sydney Kingsford Smith

10:45 - 19:52BNE Brisbane-ORD Chicago O'Hare Intl

25h 07m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,559Air Canada

Fri, 29 Jan - Sun, 14 Feb

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

22h 01m1 stop Los Angeles

11:20 - 16:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 39m1 stop Los Angeles

$1,909Qantas Airways

Sun, 3 Jan - Mon, 1 Feb

13:30 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

23h 55m1 stop Los Angeles

14:05 - 19:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 54m1 stop Dallas/Fort Worth

$1,952Qantas Airways

Wed, 2 Dec - Thu, 24 Dec

Cheap last-minute flights

Enter your travel dates to find the best prices.

17:15 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne

45h 15m2 stops Los Angeles Manila Ninoy Aquino Intl

09:20 - 16:55MEL Melbourne-ORD Chicago O'Hare Intl

24h 35m1 stop Manila Ninoy Aquino Intl

$1,833Multiple Airlines

Sun, 1 Nov - Mon, 16 Nov

17:15 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne

45h 15m2 stops Los Angeles Manila Ninoy Aquino Intl

09:20 - 22:30MEL Melbourne-ORD Chicago O'Hare Intl

30h 10m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,858Multiple Airlines

Sun, 1 Nov - Mon, 16 Nov

21:04 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne

41h 26m2 stops Los Angeles Manila Ninoy Aquino Intl

09:20 - 05:02MEL Melbourne-ORD Chicago O'Hare Intl

36h 42m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,860Multiple Airlines

Tue, 3 Nov - Tue, 10 Nov

08:59 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 26m2 stops Dallas/Fort Worth Los Angeles

14:00 - 00:53SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 53m3 stops Nadi Los Angeles Denver Intl

$1,895Multiple Airlines

Tue, 3 Nov - Thu, 26 Nov

08:59 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 26m2 stops Dallas/Fort Worth Los Angeles

14:00 - 06:14SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

33h 14m2 stops Nadi Los Angeles

$1,915Multiple Airlines

Tue, 3 Nov - Thu, 26 Nov

15:30 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 05m1 stop Vancouver Intl

11:20 - 14:37SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 17m1 stop Vancouver Intl

$1,919Air Canada

Sun, 1 Nov - Mon, 16 Nov

15:30 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 05m1 stop Vancouver Intl

11:20 - 19:52SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 32m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,926Air Canada

Sun, 1 Nov - Mon, 16 Nov

15:30 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 05m1 stop Vancouver Intl

11:20 - 14:37SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 17m1 stop Vancouver Intl

$1,956Air Canada

Sun, 1 Nov - Mon, 16 Nov

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

21h 15m1 stop Los Angeles

11:15 - 17:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 45m1 stop Los Angeles

$2,297Qantas Airways

Mon, 2 Nov - Mon, 16 Nov

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

21h 15m1 stop Los Angeles

11:15 - 17:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 45m1 stop Los Angeles

$2,344Qantas Airways

Mon, 2 Nov - Mon, 16 Nov

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Qantas Airways flights from Chicago to Australia

Our best Qantas Airways deals on Chicago to Australia flight tickets

Qantas Airways

15 Feb

ORD16:59Chicago O'Hare Intl

20h 51m

1 stop

BNE05:50Brisbane

3 Mar

BNE13:10Brisbane

19h 47m

1 stop

ORD16:57Chicago O'Hare Intl

$1,747

Qantas Airways

15 Feb

ORD16:59Chicago O'Hare Intl

20h 51m

1 stop

BNE05:50Brisbane

3 Mar

BNE16:50Brisbane

23h 05m

2 stops

ORD23:55Chicago O'Hare Intl

$1,800

Qantas Airways

15 Feb

ORD16:59Chicago O'Hare Intl

20h 51m

1 stop

BNE05:50Brisbane

4 Mar

BNE13:10Brisbane

22h 40m

1 stop

ORD19:50Chicago O'Hare Intl

$1,823

Air New Zealand flights from Chicago to Australia

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

Air New Zealand

15 Feb

ORD13:50Chicago O'Hare Intl

25h 10m

2 stops

BNE07:00Brisbane

2 Mar

BNE11:15Brisbane

24h 41m

2 stops

ORD19:56Chicago O'Hare Intl

$1,817

Air New Zealand

15 Feb

ORD13:50Chicago O'Hare Intl

28h 05m

2 stops

MEL10:55Melbourne

21 Feb

MEL10:20Melbourne

30h 39m

2 stops

ORD23:59Chicago O'Hare Intl

$1,861

Air New Zealand

11 Jan

ORD10:05Chicago O'Hare Intl

30h 30m

1 stop

SYD09:35Sydney Kingsford Smith

24 Jan

SYD11:20Sydney Kingsford Smith

25h 44m

1 stop

ORD20:04Chicago O'Hare Intl

$1,863

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Mon 1/2

08:58-08:45

1 stop31h 47m

Brisbane

Sat 13/2

10:45-20:02

1 stop25h 17m

$1,520

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Mon 1/2

08:40-08:45

2 stops32h 05m

Brisbane

Sat 13/2

10:45-19:52

2 stops25h 07m

$1,526

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Fri 26/2

13:57-08:45

2 stops26h 48m

Brisbane

Mon 8/3

10:45-16:50

2 stops46h 05m

$1,532

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Mon 1/2

15:35-13:30

2 stops29h 55m

Brisbane

Sat 13/2

18:05-19:02

3 stops40h 57m

$1,547

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Fri 29/1

15:35-15:30

2 stops31h 55m

Brisbane

Sun 14/2

10:45-14:32

1 stop19h 47m

$1,553

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Fri 29/1

15:35-15:30

2 stops31h 55m

Brisbane

Sun 14/2

10:45-20:02

1 stop25h 17m

$1,554

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Fri 29/1

15:35-15:30

2 stops31h 55m

Brisbane

Sun 14/2

10:45-19:52

2 stops25h 07m

$1,557

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Fri 29/1

15:35-15:30

2 stops31h 55m

Brisbane

Sun 14/2

10:45-19:52

2 stops25h 07m

$1,558

Fastest return journey

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Sun 3/1

17:59-09:00

1 stop22h 01m

Sydney Kingsford Smith

Mon 1/2

11:20-16:59

1 stop22h 39m

$1,909

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 2/12

13:30-06:25

1 stop23h 55m

Sydney Kingsford Smith

Thu 24/12

14:05-19:59

1 stop22h 54m

$1,952

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, January 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 $1,730. If you don’t want to visit Australia in January, then you should wait until February to fly from Chicago, when ticket prices are also cheap, with an average price of $1,738.

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 $2,095 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 $1,536 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 12% 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	$840
Fastest flight time	24h 06m
Direct flights	None

The best one-way flight to Australia from Chicago in the past 72 hours is $840. The best return flight deal from Chicago to Australia found on momondo in the last 72 hours is $1,520.

The fastest flight from Chicago to Australia takes 24h 06m

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 October 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 $2,248	Free cancellation	Rating 7.5 1,121 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.