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

Philippine Airlines, American Airlines, and Qantas Airways are the most popular carriers operating from Chicago to Australia

What airlines fly to Australia?

American Airlines, Qantas Airways and United Airlines are the top three most popular airlines that fly to Australia from Chicago according to our data. American Airlines is the first choice among our users, with 42% 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.

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

Prices for flights from Chicago to Australia were last updated today.

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

The number of operators available for flights from Chicago to Australia is 10 as of December 2025.

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

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

The travel and health documents required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$530 Cheap Flights from Chicago to Australia in 2025/26

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Find the cheapest flights from Chicago to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:40 pm - 9:00 am

ORD

SYD

21h 20m1 stop

7:05 am - 2:57 pm

SYD

ORD

24h 52m2 stops

$901Qantas Airways

Tue, Jan 20 - Wed, Jan 28

3:35 pm - 9:35 am

ORD

SYD

25h 00m1 stop

11:20 am - 2:41 pm

SYD

ORD

20h 21m1 stop

$906Air Canada

Sun, Feb 1 - Sun, Feb 15

2:15 pm - 9:10 am

ORD

SYD

49h 55m2 stops

11:20 am - 2:57 pm

SYD

ORD

20h 37m1 stop

$908Qantas Airways

Sat, Jan 24 - Sat, Jan 31

3:35 pm - 9:35 am

ORD

SYD

25h 00m1 stop

11:20 am - 8:10 pm

SYD

ORD

25h 50m2 stops

$909Air Canada

Sun, Feb 1 - Sun, Feb 15

8:45 am - 8:45 am

ORD

BNE

32h 00m2 stops

6:05 am - 2:41 pm

BNE

ORD

24h 36m2 stops

$979Multiple Airlines

Tue, Feb 10 - Sun, Feb 22

3:35 pm - 2:15 pm

ORD

MEL

29h 40m2 stops

8:30 pm - 2:43 pm

MEL

ORD

33h 13m2 stops

$989Multiple Airlines

Wed, Jan 28 - Mon, Apr 27

2:40 pm - 9:30 am

ORD

ADL

26h 20m1 stop

2:55 pm - 9:32 pm

ADL

ORD

23h 07m1 stop

$1,155United Airlines

Mon, Jan 19 - Mon, Feb 2

12:48 pm - 8:20 am

MDW

BNE

27h 32m2 stops

10:40 am - 10:22 pm

BNE

MDW

27h 42m2 stops

$1,163Delta

Wed, Jan 28 - Sun, Feb 8

1:00 pm - 7:40 am

MDW

MEL

27h 40m2 stops

10:00 am - 6:31 pm

MEL

MDW

23h 31m2 stops

$1,168Delta

Wed, Apr 29 - Sun, May 31

4:49 pm - 2:10 pm

ORD

CBR

29h 21m2 stops

5:45 pm - 5:25 am

CBR

ORD

27h 40m2 stops

$1,316American Airlines

Tue, Mar 10 - Tue, Mar 17

Qantas Airways flights from Chicago to Australia

Our best Qantas Airways deals on Chicago to Australia flight tickets

Qantas Airways

Jan 20

ORD6:40 pmChicago O'Hare Intl

21h 20m

1 stop

SYD9:00 amSydney Kingsford Smith

Jan 28

SYD7:05 amSydney Kingsford Smith

24h 52m

2 stops

ORD2:57 pmChicago O'Hare Intl

$901

Find similar

Qantas Airways

Jan 24

ORD2:15 pmChicago O'Hare Intl

49h 55m

2 stops

SYD9:10 amSydney Kingsford Smith

Jan 31

SYD11:20 amSydney Kingsford Smith

20h 37m

1 stop

ORD2:57 pmChicago O'Hare Intl

$908

Find similar

Qantas Airways

Jan 25

ORD6:40 pmChicago O'Hare Intl

43h 55m

2 stops

SYD7:35 amSydney Kingsford Smith

Feb 8

SYD11:20 amSydney Kingsford Smith

20h 37m

1 stop

ORD2:57 pmChicago O'Hare Intl

$946

Find similar

Air Canada flights from Chicago to Australia

Our best Air Canada deals on Chicago to Australia flight tickets

Air Canada

Feb 1

ORD3:35 pmChicago O'Hare Intl

25h 00m

1 stop

SYD9:35 amSydney Kingsford Smith

Feb 15

SYD11:20 amSydney Kingsford Smith

20h 21m

1 stop

ORD2:41 pmChicago O'Hare Intl

$906

Find similar

Air Canada

Feb 1

ORD3:35 pmChicago O'Hare Intl

25h 00m

1 stop

SYD9:35 amSydney Kingsford Smith

Feb 15

SYD11:20 amSydney Kingsford Smith

25h 50m

2 stops

ORD8:10 pmChicago O'Hare Intl

$909

Find similar

Air Canada

Jan 25

ORD3:35 pmChicago O'Hare Intl

25h 00m

1 stop

SYD9:35 amSydney Kingsford Smith

Feb 8

SYD11:20 amSydney Kingsford Smith

20h 21m

1 stop

ORD2:41 pmChicago O'Hare Intl

$944

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 1/20

6:40 pm-9:00 am

1 stop21h 20m

Sydney Kingsford Smith

Wed 1/28

7:05 am-2:57 pm

2 stops24h 52m

$901

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 2/1

3:35 pm-9:35 am

1 stop25h 00m

Sydney Kingsford Smith

Sun 2/15

11:20 am-2:41 pm

1 stop20h 21m

$906

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 1/24

2:15 pm-9:10 am

2 stops49h 55m

Sydney Kingsford Smith

Sat 1/31

11:20 am-2:57 pm

1 stop20h 37m

$908

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 2/1

3:35 pm-9:35 am

1 stop25h 00m

Sydney Kingsford Smith

Sun 2/15

11:20 am-8:10 pm

2 stops25h 50m

$909

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/10

8:45 am-8:45 am

2 stops32h 00m

Brisbane

Sun 2/22

6:05 am-2:41 pm

2 stops24h 36m

$979

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 1/28

3:35 pm-2:15 pm

2 stops29h 40m

Melbourne

Mon 4/27

8:30 pm-2:43 pm

2 stops33h 13m

$989

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 1/19

2:40 pm-9:30 am

1 stop26h 20m

Adelaide

Mon 2/2

2:55 pm-9:32 pm

1 stop23h 07m

$1,155

ChicagoBrisbane

MDW - BNE

MDWBNE

Chicago Midway

Wed 1/28

12:48 pm-8:20 am

2 stops27h 32m

Brisbane

Sun 2/8

10:40 am-10:22 pm

2 stops27h 42m

$1,163

ChicagoMelbourne

MDW - MEL

MDWMEL

Chicago Midway

Wed 4/29

1:00 pm-7:40 am

2 stops27h 40m

Melbourne

Sun 5/31

10:00 am-6:31 pm

2 stops23h 31m

$1,168

ChicagoCanberra

ORD - CBR

ORDCBR

Chicago O'Hare Intl

Tue 3/10

4:49 pm-2:10 pm

2 stops29h 21m

Canberra

Tue 3/17

5:45 pm-5:25 am

2 stops27h 40m

$1,316

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 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?

The month of August is, on average, the cheapest month to fly to Australia from Chicago, with most prices found around $853. If you aren’t able to travel during the month of August, then book flights to Australia from Chicago during June instead. Flights to Australia in June, while not as cheap as those in August, still average around $863.

What is the cheapest day to depart on your flight to Australia?

The cheapest day to depart from Chicago to Australia is on a Saturday. Travelers who choose to depart for Australia on a Saturday will often find tickets for as low as $935. On the other hand, Thursday is the most expensive day to depart from Chicago because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,415.

What is the cheapest time of day to depart on your flight to Australia?

Flying to Australia from Chicago in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,185 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,417 on average. Flights to Australia from Chicago in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $1,077 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Chicago for as low as $851 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 33% 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 20m
Direct flights	None

The fastest flight from Chicago to Australia takes 21h 20m

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 were last updated today.
How many operators does momondo search for flights from Chicago to Australia?
The number of operators available for flights from Chicago to Australia is 10 as of December 2025.
How old do you have to be to fly from Chicago 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 Chicago to Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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 $675	Free Cancellation	Rating 7.5 947 reviews	Search Qantas Airways flights
ANA	PriceFrom $679	Free Cancellation	Rating 8.4 1,021 reviews	Search ANA flights
American Airlines	PriceFrom $680	Free Cancellation	Rating 7.2 11,048 reviews	Search American Airlines flights
Fiji Airways	PriceFrom $772	Free Cancellation	Rating 8.1 210 reviews	Search Fiji Airways flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
Air Canada	PriceFrom $872	Free Cancellation	Rating 7.1 10,514 reviews	Search Air Canada flights
Delta	PriceFrom $935	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
Qatar Airways	PriceFrom $1,229	Free Cancellation	Rating 7.4 3,677 reviews	Search Qatar Airways flights
Air New Zealand	PriceFrom $1,264	Free Cancellation	Rating 8.0 552 reviews	Search Air New Zealand flights
Cathay Pacific	PriceFrom $1,418	Free Cancellation	Rating 7.6 1,093 reviews	Search Cathay Pacific flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Australia from Chicago.

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

Flights from Chicago to Australia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to Australia.

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

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