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

Delta is the most popular carrier 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 January 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.

$731 Cheap Flights from Chicago to Australia in 2026

1 adult

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Find the cheapest flights from Chicago to Australia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

14:15 - 09:30

ORD

MEL

26h 15m

1 stop

06:45 - 14:53

MEL

ORD

25h 08m

2 stops

$1,391Qantas Airways

Fri, 30 Jan - Thu, 19 Feb

17:10 - 17:15

ORD

MEL

31h 05m

2 stops

12:00 - 21:35

MEL

ORD

26h 35m

1 stop

$1,392Qantas Airways

Sun, 1 Feb - Sat, 28 Feb

15:35 - 08:45

ORD

BNE

25h 10m

1 stop

09:45 - 14:41

BNE

ORD

19h 56m

1 stop

$1,416Air Canada

Tue, 24 Feb - Wed, 11 Mar

07:15 - 08:45

ORD

BNE

33h 30m

2 stops

09:45 - 14:41

BNE

ORD

19h 56m

1 stop

$1,422Air Canada

Tue, 24 Feb - Wed, 11 Mar

08:45 - 07:05

ORD

BNE

31h 20m

2 stops

10:00 - 14:41

BNE

ORD

19h 41m

1 stop

$1,465Air New Zealand

Tue, 7 Jul - Sun, 19 Jul

08:45 - 07:05

ORD

BNE

31h 20m

2 stops

10:00 - 20:05

BNE

ORD

25h 05m

2 stops

$1,470Air New Zealand

Tue, 7 Jul - Sun, 19 Jul

19:39 - 07:25

ORD

SYD

43h 46m

1 stop

14:00 - 04:49

SYD

ORD

30h 49m

2 stops

$1,492Multiple Airlines

Tue, 10 Mar - Tue, 24 Mar

19:39 - 07:25

ORD

SYD

43h 46m

1 stop

14:00 - 04:49

SYD

ORD

30h 49m

2 stops

$1,503Multiple Airlines

Tue, 10 Mar - Tue, 24 Mar

12:45 - 08:20

MDW

BNE

27h 35m

2 stops

10:05 - 18:40

BNE

MDW

23h 35m

2 stops

$1,742Delta

Wed, 4 Mar - Wed, 11 Mar

19:20 - 08:20

MDW

BNE

45h 00m

2 stops

10:05 - 18:40

BNE

MDW

23h 35m

2 stops

$1,763Delta

Tue, 24 Feb - Wed, 11 Mar

Qantas Airways flights from Chicago to Australia

Our best Qantas Airways deals on Chicago to Australia flight tickets

Qantas Airways

30 Jan

ORD14:15Chicago O'Hare Intl

26h 15m

1 stop

MEL09:30Melbourne

19 Feb

MEL06:45Melbourne

25h 08m

2 stops

ORD14:53Chicago O'Hare Intl

$1,391

Qantas Airways

1 Feb

ORD17:10Chicago O'Hare Intl

31h 05m

2 stops

MEL17:15Melbourne

28 Feb

MEL12:00Melbourne

26h 35m

1 stop

ORD21:35Chicago O'Hare Intl

$1,392

Qantas Airways

30 Jan

ORD09:02Chicago O'Hare Intl

31h 28m

1 stop

MEL09:30Melbourne

16 Feb

MEL18:30Melbourne

37h 23m

2 stops

ORD14:53Chicago O'Hare Intl

$1,425

Delta flights from Chicago to Australia

Our best Delta deals on Chicago to Australia flight tickets

Delta

4 Mar

MDW12:45Chicago Midway

27h 35m

2 stops

BNE08:20Brisbane

11 Mar

BNE10:05Brisbane

23h 35m

2 stops

MDW18:40Chicago Midway

$1,742

Delta

24 Feb

MDW19:20Chicago Midway

45h 00m

2 stops

BNE08:20Brisbane

11 Mar

BNE10:05Brisbane

23h 35m

2 stops

MDW18:40Chicago Midway

$1,763

Delta

27 Feb

MDW13:28Chicago Midway

26h 52m

2 stops

BNE08:20Brisbane

6 Mar

BNE10:40Brisbane

24h 00m

2 stops

MDW18:40Chicago Midway

$1,892

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Fri 30/1

14:15-09:30

1 stop26h 15m

Melbourne

Thu 19/2

06:45-14:53

2 stops25h 08m

$1,391

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sun 1/2

17:10-17:15

2 stops31h 05m

Melbourne

Sat 28/2

12:00-21:35

1 stop26h 35m

$1,392

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 24/2

15:35-08:45

1 stop25h 10m

Brisbane

Wed 11/3

09:45-14:41

1 stop19h 56m

$1,416

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 24/2

07:15-08:45

2 stops33h 30m

Brisbane

Wed 11/3

09:45-14:41

1 stop19h 56m

$1,422

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 7/7

08:45-07:05

2 stops31h 20m

Brisbane

Sun 19/7

10:00-14:41

1 stop19h 41m

$1,465

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 7/7

08:45-07:05

2 stops31h 20m

Brisbane

Sun 19/7

10:00-20:05

2 stops25h 05m

$1,470

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 10/3

19:39-07:25

1 stop43h 46m

Sydney Kingsford Smith

Tue 24/3

14:00-04:49

2 stops30h 49m

$1,492

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 10/3

19:39-07:25

1 stop43h 46m

Sydney Kingsford Smith

Tue 24/3

14:00-04:49

2 stops30h 49m

$1,503

ChicagoBrisbane

MDW - BNE

MDWBNE

Chicago Midway

Wed 4/3

12:45-08:20

2 stops27h 35m

Brisbane

Wed 11/3

10:05-18:40

2 stops23h 35m

$1,742

ChicagoBrisbane

MDW - BNE

MDWBNE

Chicago Midway

Tue 24/2

19:20-08:20

2 stops45h 00m

Brisbane

Wed 11/3

10:05-18:40

2 stops23h 35m

$1,763

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, June 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 $1,292. If you don’t want to visit Australia in June, then you should wait until May to fly from Chicago, when ticket prices are also cheap, with an average price of $1,298.

How far in advance should I book a flight 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 $1,642 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 $1,362 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 37% 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

Fastest flight time	21h 01m
Direct flights	None

The fastest flight from Chicago to Australia takes 21h 01m

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

Search flight deals

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 January 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 $1,307	Free cancellation	Rating 7.5 973 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.