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

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

What airlines fly to Australia?

Qantas Airways, Air Canada and United Airlines are the top three most popular airlines that fly to Australia from Chicago according to our data. Qantas Airways is the first choice among our users, with 48% 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 August 2026.

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.

$501 Cheap Flights from Chicago to Australia in 2026

Discover deals from 900+ travel sites with momondo.

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.

10:45 pm - 7:20 amORD Chicago O'Hare Intl-PER Perth

42h 35m1 stop Manila Ninoy Aquino Intl

8:30 am - 5:55 pmPER Perth-ORD Chicago O'Hare Intl

22h 25m1 stop Manila Ninoy Aquino Intl

$1,098Philippine Airlines

Wed, Feb 10 - Mon, Apr 5

6:30 am - 7:00 amORD Chicago O'Hare Intl-BNE Brisbane

33h 30m3 stops Denver Intl Los Angeles Auckland Intl

8:20 am - 12:21 amBNE Brisbane-ORD Chicago O'Hare Intl

32h 01m3 stops Auckland Intl Los Angeles Denver Intl

$1,191Multiple Airlines

Wed, Oct 28 - Wed, Nov 11

3:40 pm - 7:05 amORD Chicago O'Hare Intl-BNE Brisbane

24h 25m1 stop Vancouver Intl

10:00 am - 2:43 pmBNE Brisbane-ORD Chicago O'Hare Intl

19h 43m1 stop Vancouver Intl

$1,198Air Canada

Sun, Oct 11 - Sun, Oct 18

3:40 pm - 7:05 amORD Chicago O'Hare Intl-BNE Brisbane

24h 25m1 stop Vancouver Intl

10:00 am - 2:43 pmBNE Brisbane-ORD Chicago O'Hare Intl

19h 43m1 stop Vancouver Intl

$1,199Air Canada

Sun, Oct 11 - Sun, Oct 18

5:35 pm - 8:15 pmORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 40m1 stop Tokyo Haneda

12:25 pm - 5:20 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

33h 55m2 stops Tokyo Haneda Los Angeles

$1,227ANA

Sat, Oct 31 - Sat, Nov 14

7:45 pm - 8:10 pmORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

32h 25m2 stops Los Angeles Tokyo Haneda

12:25 pm - 8:20 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 55m1 stop Tokyo Haneda

$1,234ANA

Sat, Oct 17 - Fri, Oct 30

7:15 am - 7:00 amORD Chicago O'Hare Intl-BNE Brisbane

31h 45m2 stops Los Angeles Auckland Intl

11:15 am - 8:22 pmBNE Brisbane-ORD Chicago O'Hare Intl

25h 07m2 stops Auckland Intl Los Angeles

$1,236Air New Zealand

Sun, Feb 21 - Mon, Mar 8

11:00 am - 8:35 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 35m2 stops Los Angeles Auckland Intl

11:50 am - 8:22 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 32m2 stops Auckland Intl San Francisco

$1,238Air New Zealand

Tue, Jan 5 - Tue, Feb 2

6:50 pm - 6:45 pmORD Chicago O'Hare Intl-PER Perth

33h 55m1 stop Doha Hamad Intl

1:20 pm - 2:30 pmPER Perth-ORD Chicago O'Hare Intl

39h 10m2 stops Brisbane Doha Hamad Intl

$1,417Qatar Airways

Sun, Feb 7 - Sun, Feb 21

7:50 pm - 6:45 pmORD Chicago O'Hare Intl-PER Perth

33h 55m1 stop Doha Hamad Intl

1:20 pm - 2:30 pmPER Perth-ORD Chicago O'Hare Intl

39h 10m2 stops Brisbane Doha Hamad Intl

$1,537Qatar Airways

Sat, Oct 31 - Tue, Nov 17

Cheap last minute flights

Enter your travel dates to find the best prices.

3:55 pm - 7:20 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 25m1 stop Vancouver Intl

9:20 am - 2:43 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 23m1 stop Vancouver Intl

$1,189Air Canada

Mon, Aug 31 - Wed, Sep 16

3:55 pm - 7:20 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 25m1 stop Vancouver Intl

9:20 am - 8:00 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 40m2 stops Vancouver Intl Toronto Pearson Intl

$1,197Air Canada

Mon, Aug 31 - Wed, Sep 16

9:20 pm - 7:30 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 10m1 stop Los Angeles

3:40 pm - 8:35 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

31h 55m1 stop Abu Dhabi Zayed Intl

$1,376Multiple Airlines

Tue, Sep 1 - Wed, Sep 30

9:20 pm - 7:30 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 10m1 stop Los Angeles

9:50 pm - 1:55 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

55h 05m2 stops Brisbane Hong Kong Intl

$1,385Multiple Airlines

Tue, Sep 1 - Wed, Sep 30

7:20 pm - 10:05 pmORD Chicago O'Hare Intl-MEL Melbourne

35h 45m1 stop Doha Hamad Intl

10:00 pm - 3:05 pmMEL Melbourne-ORD Chicago O'Hare Intl

32h 05m1 stop Doha Hamad Intl

$1,427Qatar Airways

Tue, Sep 1 - Wed, Sep 30

7:20 pm - 4:50 pmORD Chicago O'Hare Intl-MEL Melbourne

30h 30m1 stop Doha Hamad Intl

11:40 pm - 2:30 pmMEL Melbourne-ORD Chicago O'Hare Intl

31h 50m1 stop Doha Hamad Intl

$1,442Qatar Airways

Mon, Aug 31 - Mon, Nov 2

8:50 am - 7:10 pmORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 20m2 stops Los Angeles Tokyo Haneda

11:45 am - 8:33 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

47h 48m2 stops Tokyo Haneda Los Angeles

$1,479ANA

Sun, Aug 30 - Tue, Sep 15

8:50 am - 7:10 pmORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 20m2 stops Los Angeles Tokyo Haneda

11:45 am - 8:33 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

47h 48m2 stops Tokyo Haneda Los Angeles

$1,595ANA

Sun, Aug 30 - Tue, Sep 15

8:49 am - 7:20 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 31m1 stop Vancouver Intl

9:20 am - 2:36 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 16m1 stop Vancouver Intl

$1,608Air New Zealand

Tue, Sep 1 - Sun, Sep 6

5:52 pm - 7:30 amORD Chicago O'Hare Intl-MEL Melbourne

22h 38m1 stop Los Angeles

12:10 pm - 10:36 pmMEL Melbourne-ORD Chicago O'Hare Intl

26h 26m2 stops Auckland Intl Houston George Bush Intcntl

$1,617Air New Zealand

Mon, Aug 31 - Sun, Nov 1

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Air New Zealand flights from Chicago to Australia

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

Air New Zealand

Feb 21

ORD7:40 amChicago O'Hare Intl

34h 20m

2 stops

BNE10:00 amBrisbane

Mar 8

BNE11:15 amBrisbane

25h 07m

2 stops

ORD8:22 pmChicago O'Hare Intl

$1,236

Air New Zealand

Oct 21

ORD2:00 pmChicago O'Hare Intl

26h 45m

2 stops

SYD8:45 amSydney Kingsford Smith

Nov 9

SYD2:05 pmSydney Kingsford Smith

25h 54m

2 stops

ORD10:59 pmChicago O'Hare Intl

$1,238

Air New Zealand

Oct 31

ORD6:30 pmChicago O'Hare Intl

46h 05m

2 stops

SYD8:35 amSydney Kingsford Smith

Nov 17

SYD11:50 amSydney Kingsford Smith

25h 45m

2 stops

ORD8:35 pmChicago O'Hare Intl

$1,247

Delta flights from Chicago to Australia

Our best Delta deals on Chicago to Australia flight tickets

Delta

Oct 21

MDW1:27 pmChicago Midway

27h 23m

2 stops

MEL8:50 amMelbourne

Oct 28

MEL9:10 amMelbourne

24h 50m

2 stops

MDW6:00 pmChicago Midway

$1,614

Delta

Oct 31

MDW6:04 amChicago Midway

33h 26m

2 stops

SYD7:30 amSydney Kingsford Smith

Nov 7

SYD10:40 amSydney Kingsford Smith

23h 07m

2 stops

MDW4:47 pmChicago Midway

$1,615

Delta

Sep 1

MDW10:54 amChicago Midway

28h 56m

2 stops

SYD6:50 amSydney Kingsford Smith

Sep 8

SYD9:15 amSydney Kingsford Smith

24h 04m

2 stops

MDW6:19 pmChicago Midway

$1,618

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoPerth

ORD Chicago O'Hare Intl - PER Perth

ORDPER

Chicago O'Hare Intl

Wed 2/10

10:45 pm-7:20 am

1 stop42h 35m

Perth

Mon 4/5

8:30 am-5:55 pm

1 stop22h 25m

$1,098

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Wed 10/28

6:30 am-7:00 am

3 stops33h 30m

Brisbane

Wed 11/11

8:20 am-12:21 am

3 stops32h 01m

$1,191

Quickest round-trip

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 10/11

3:40 pm-7:05 am

1 stop24h 25m

Brisbane

Sun 10/18

10:00 am-2:43 pm

1 stop19h 43m

$1,198

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 10/11

3:40 pm-7:05 am

1 stop24h 25m

Brisbane

Sun 10/18

10:00 am-2:43 pm

1 stop19h 43m

$1,199

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Sat 10/31

5:35 pm-8:15 pm

1 stop34h 40m

Sydney Kingsford Smith

Sat 11/14

12:25 pm-5:20 am

2 stops33h 55m

$1,227

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Sat 10/17

7:45 pm-8:10 pm

2 stops32h 25m

Sydney Kingsford Smith

Fri 10/30

12:25 pm-8:20 am

1 stop35h 55m

$1,234

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Sun 2/21

7:15 am-7:00 am

2 stops31h 45m

Brisbane

Mon 3/8

11:15 am-8:22 pm

2 stops25h 07m

$1,236

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/5

11:00 am-8:35 am

2 stops28h 35m

Sydney Kingsford Smith

Tue 2/2

11:50 am-8:22 pm

2 stops25h 32m

$1,238

ChicagoPerth

ORD Chicago O'Hare Intl - PER Perth

ORDPER

Chicago O'Hare Intl

Sun 2/7

6:50 pm-6:45 pm

1 stop33h 55m

Perth

Sun 2/21

1:20 pm-2:30 pm

2 stops39h 10m

$1,417

ChicagoPerth

ORD Chicago O'Hare Intl - PER Perth

ORDPER

Chicago O'Hare Intl

Sat 10/31

7:50 pm-6:45 pm

1 stop33h 55m

Perth

Tue 11/17

1:20 pm-2:30 pm

2 stops39h 10m

$1,537

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 February is, on average, the cheapest month to fly to Australia from Chicago, with most prices found around $1,305. If you aren’t able to travel during the month of February, then book flights to Australia from Chicago during June instead. Flights to Australia in June, while not as cheap as those in February, still average around $1,314.

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 $1,434 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 $1,099 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 16% 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	$501
Fastest flight time	20h 17m
Direct flights	None

The best one-way flight to Australia from Chicago in the past 72 hours is $501. The best round-trip flight deal from Chicago to Australia found on momondo in the last 72 hours is $1,098.

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 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 August 2026.
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
Delta	PriceFrom $261	Free Cancellation	Rating 7.8 8,537 reviews	Search Delta flights
Air Canada	PriceFrom $649	Free Cancellation	Rating 7.1 11,556 reviews	Search Air Canada flights
Fiji Airways	PriceFrom $716	Free Cancellation	Rating 8.0 256 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $837	Free Cancellation	Rating 7.5 1,087 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $837	Free Cancellation	Rating 7.1 12,017 reviews	Search American Airlines flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 10,138 reviews	Search United Airlines flights
ANA	PriceFrom $1,193	Free Cancellation	Rating 8.3 1,305 reviews	Search ANA flights
Air New Zealand	PriceFrom $1,264	Free Cancellation	Rating 8.0 665 reviews	Search Air New Zealand flights
Cathay Pacific	PriceFrom $1,560	Free Cancellation	Rating 7.6 1,466 reviews	Search Cathay Pacific flights
Qatar Airways	PriceFrom $1,629	Free Cancellation	Rating 7.4 3,725 reviews	Search Qatar Airways 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.