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.

$853 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.

07:35 - 08:00ORD Chicago O'Hare Intl-MEL Melbourne

31h 25m1 stop Los Angeles

10:10 - 13:47MEL Melbourne-ORD Chicago O'Hare Intl

20h 37m1 stop Los Angeles

$1,628Delta

Mon, 1 Feb - Sun, 28 Feb

07:35 - 08:00ORD Chicago O'Hare Intl-MEL Melbourne

31h 25m1 stop Los Angeles

10:10 - 13:47MEL Melbourne-ORD Chicago O'Hare Intl

20h 37m1 stop Los Angeles

$1,628Delta

Sat, 23 Jan - Sat, 30 Jan

07:35 - 07:00ORD Chicago O'Hare Intl-MEL Melbourne

30h 25m1 stop Los Angeles

09:10 - 23:30MEL Melbourne-ORD Chicago O'Hare Intl

30h 20m1 stop Los Angeles

$1,628Delta

Fri, 12 Mar - Sun, 21 Mar

07:35 - 08:00ORD Chicago O'Hare Intl-MEL Melbourne

31h 25m1 stop Los Angeles

10:10 - 23:30MEL Melbourne-ORD Chicago O'Hare Intl

30h 20m1 stop Los Angeles

$1,628Delta

Sat, 23 Jan - Mon, 1 Feb

14:55 - 08:00ORD Chicago O'Hare Intl-MEL Melbourne

24h 05m1 stop Los Angeles

10:10 - 13:47MEL Melbourne-ORD Chicago O'Hare Intl

20h 37m1 stop Los Angeles

$1,628Delta

Sat, 23 Jan - Sun, 31 Jan

07:35 - 08:00ORD Chicago O'Hare Intl-MEL Melbourne

31h 25m1 stop Los Angeles

10:10 - 13:47MEL Melbourne-ORD Chicago O'Hare Intl

20h 37m1 stop Los Angeles

$1,628Delta

Fri, 22 Jan - Fri, 29 Jan

18:30 - 07:50ORD Chicago O'Hare Intl-MEL Melbourne

22h 20m1 stop Los Angeles

10:00 - 17:21MEL Melbourne-ORD Chicago O'Hare Intl

22h 21m1 stop Los Angeles

$1,628Delta

Fri, 9 Apr - Wed, 21 Apr

07:35 - 08:00ORD Chicago O'Hare Intl-MEL Melbourne

31h 25m1 stop Los Angeles

10:10 - 13:47MEL Melbourne-ORD Chicago O'Hare Intl

20h 37m1 stop Los Angeles

$1,628Delta

Fri, 22 Jan - Sat, 30 Jan

20:30 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

41h 55m1 stop Los Angeles

11:10 - 22:31SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 21m1 stop Los Angeles

$2,472Qantas Airways

Sat, 31 Oct - Mon, 30 Nov

21:18 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 42m1 stop Los Angeles

11:20 - 15:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 39m1 stop Los Angeles

$2,484Qantas Airways

Tue, 29 Dec - Tue, 2 Feb

Cheap last-minute flights

Enter your travel dates to find the best prices.

06:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

35h 00m2 stops Los Angeles Manila Ninoy Aquino Intl

11:30 - 05:02SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

34h 32m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,885Multiple Airlines

Mon, 19 Oct - Thu, 5 Nov

06:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

35h 00m2 stops Los Angeles Manila Ninoy Aquino Intl

11:30 - 06:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 35m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,885Multiple Airlines

Mon, 19 Oct - Wed, 4 Nov

07:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 00m2 stops Los Angeles Manila Ninoy Aquino Intl

11:30 - 05:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 29m2 stops Manila Ninoy Aquino Intl San Francisco

$1,885Multiple Airlines

Mon, 19 Oct - Wed, 4 Nov

06:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

35h 00m2 stops Los Angeles Manila Ninoy Aquino Intl

11:30 - 05:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 29m2 stops Manila Ninoy Aquino Intl San Francisco

$1,885Multiple Airlines

Wed, 21 Oct - Mon, 9 Nov

06:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

35h 00m2 stops Los Angeles Manila Ninoy Aquino Intl

11:30 - 05:02SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

34h 32m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,885Multiple Airlines

Wed, 21 Oct - Thu, 5 Nov

06:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

35h 00m2 stops Los Angeles Manila Ninoy Aquino Intl

11:30 - 05:02SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

34h 32m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,885Multiple Airlines

Tue, 20 Oct - Thu, 5 Nov

07:00 - 10:05ORD Chicago O'Hare Intl-BNE Brisbane

36h 05m2 stops Los Angeles Manila Ninoy Aquino Intl

11:35 - 06:59BNE Brisbane-ORD Chicago O'Hare Intl

34h 24m2 stops Manila Ninoy Aquino Intl San Francisco

$1,887Multiple Airlines

Sun, 18 Oct - Sun, 1 Nov

07:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 00m2 stops Los Angeles Manila Ninoy Aquino Intl

11:30 - 05:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 29m2 stops Manila Ninoy Aquino Intl San Francisco

$1,928Multiple Airlines

Mon, 19 Oct - Fri, 6 Nov

15:20 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 45m1 stop Los Angeles

14:05 - 18:30SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 25m1 stop Dallas/Fort Worth

$2,419Qantas Airways

Mon, 19 Oct - Wed, 4 Nov

15:20 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 45m1 stop Los Angeles

11:10 - 17:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 50m1 stop Los Angeles

$2,419Qantas Airways

Mon, 19 Oct - Wed, 4 Nov

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Air Canada flights from Chicago to Australia

Our best Air Canada deals on Chicago to Australia flight tickets

Air Canada

25 Nov

ORD15:30Chicago O'Hare Intl

25h 05m

1 stop

SYD09:35Sydney Kingsford Smith

2 Dec

SYD11:20Sydney Kingsford Smith

20h 17m

1 stop

ORD14:37Chicago O'Hare Intl

$1,901

Air Canada

25 Nov

ORD08:49Chicago O'Hare Intl

31h 46m

1 stop

SYD09:35Sydney Kingsford Smith

2 Dec

SYD11:20Sydney Kingsford Smith

25h 32m

2 stops

ORD19:52Chicago O'Hare Intl

$1,904

Air Canada

25 Nov

ORD13:55Chicago O'Hare Intl

26h 40m

2 stops

SYD09:35Sydney Kingsford Smith

2 Dec

SYD11:20Sydney Kingsford Smith

25h 32m

2 stops

ORD19:52Chicago O'Hare Intl

$1,907

Turkish Airlines flights from Chicago to Australia

Our best Turkish Airlines deals on Chicago to Australia flight tickets

Turkish Airlines

10 Nov

ORD20:15Chicago O'Hare Intl

54h 10m

1 stop

SYD19:25Sydney Kingsford Smith

17 Nov

SYD21:35Sydney Kingsford Smith

53h 25m

1 stop

ORD10:00Chicago O'Hare Intl

$1,970

Turkish Airlines

27 Oct

ORD12:45Chicago O'Hare Intl

38h 40m

2 stops

SYD19:25Sydney Kingsford Smith

14 Nov

SYD21:35Sydney Kingsford Smith

61h 45m

2 stops

ORD18:20Chicago O'Hare Intl

$2,067

Turkish Airlines

28 Oct

ORD12:45Chicago O'Hare Intl

62h 40m

2 stops

SYD19:25Sydney Kingsford Smith

12 Nov

SYD21:35Sydney Kingsford Smith

53h 25m

2 stops

ORD10:00Chicago O'Hare Intl

$2,074

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Mon 1/2

07:35-08:00

1 stop31h 25m

Melbourne

Sun 28/2

10:10-13:47

1 stop20h 37m

$1,628

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Sat 23/1

07:35-08:00

1 stop31h 25m

Melbourne

Sat 30/1

10:10-13:47

1 stop20h 37m

$1,628

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Fri 12/3

07:35-07:00

1 stop30h 25m

Melbourne

Sun 21/3

09:10-23:30

1 stop30h 20m

$1,628

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Sat 23/1

07:35-08:00

1 stop31h 25m

Melbourne

Mon 1/2

10:10-23:30

1 stop30h 20m

$1,628

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Sat 23/1

14:55-08:00

1 stop24h 05m

Melbourne

Sun 31/1

10:10-13:47

1 stop20h 37m

$1,628

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Fri 22/1

07:35-08:00

1 stop31h 25m

Melbourne

Fri 29/1

10:10-13:47

1 stop20h 37m

$1,628

Fastest return journey

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Fri 9/4

18:30-07:50

1 stop22h 20m

Melbourne

Wed 21/4

10:00-17:21

1 stop22h 21m

$1,628

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Fri 22/1

07:35-08:00

1 stop31h 25m

Melbourne

Sat 30/1

10:10-13:47

1 stop20h 37m

$1,628

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Sat 31/10

20:30-06:25

1 stop41h 55m

Sydney Kingsford Smith

Mon 30/11

11:10-22:31

1 stop28h 21m

$2,472

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 29/12

21:18-09:00

1 stop42h 42m

Sydney Kingsford Smith

Tue 2/2

11:20-15:59

1 stop21h 39m

$2,484

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 $1,742. If you don’t want to visit Australia in February, then you should wait until January 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 $2,037 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 $1,510 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	$853
Fastest flight time	20h 50m
Direct flights	None

The best one-way flight to Australia from Chicago in the past 72 hours is $853. The best return flight deal from Chicago to Australia found on momondo in the last 72 hours is $1,628.

The fastest flight from Chicago to Australia takes 20h 50m

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 $2,265	Free cancellation	Rating 7.5 1,111 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.