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

ANA, Fiji Airways, 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 49% 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 September 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.

$527 Cheap Flights from Chicago to Australia in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Chicago to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

12:03 pm - 9:00 amMDW-SYD

28h 57m2 stops

2:05 pm - 10:03 pmSYD-MDW

24h 58m2 stops

$1,033

Find Deal

Mon, Oct 27 - Sun, Nov 9

9:44 am - 8:05 amMDW-SYD

30h 21m2 stops

2:05 pm - 11:03 pmSYD-MDW

24h 58m2 stops

$1,072

Find Deal

Mon, Oct 20 - Sun, Nov 2

3:00 pm - 9:30 amORD-MEL

25h 30m1 stop

12:00 pm - 4:54 pmMEL-ORD

21h 54m1 stop

$1,372Qantas Airways

Find Deal

Mon, Nov 24 - Sun, Dec 14

5:10 pm - 5:00 amORD-BNE

20h 50m1 stop

7:40 pm - 11:59 pmBNE-ORD

19h 19m1 stop

$1,375Qantas Airways

Find Deal

Sun, Mar 8 - Sun, Mar 15

2:00 pm - 1:35 pmORD-MEL

30h 35m3 stops

7:10 am - 7:53 pmMEL-ORD

28h 43m2 stops

$1,415Air Canada

Find Deal

Thu, Feb 26 - Tue, Mar 17

3:14 pm - 9:30 amORD-MEL

25h 16m2 stops

12:00 pm - 11:59 pmMEL-ORD

28h 59m1 stop

$1,436American Airlines

Find Deal

Mon, Dec 1 - Mon, Dec 15

2:50 pm - 5:30 amORD-BNE

23h 40m2 stops

7:40 pm - 11:59 pmBNE-ORD

19h 19m1 stop

$1,447American Airlines

Find Deal

Sun, Mar 8 - Sun, Mar 15

2:25 pm - 7:30 amORD-BNE

25h 05m1 stop

11:40 am - 6:55 pmBNE-ORD

23h 15m2 stops

$1,463United Airlines

Find Deal

Sun, Feb 15 - Sun, Feb 22

8:20 pm - 7:30 amORD-BNE

43h 10m1 stop

11:40 am - 8:02 pmBNE-ORD

24h 22m1 stop

$1,471United Airlines

Find Deal

Sat, Feb 14 - Mon, Feb 23

3:40 pm - 6:00 pmORD-CBR

33h 20m2 stops

6:30 am - 7:53 pmCBR-ORD

29h 23m2 stops

$1,592Air Canada

Find Deal

Wed, Mar 4 - Wed, Mar 11

ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

Nov 3

ORD4:25 pmChicago O'Hare Intl

25h 05m

1 stop

SYD10:30 amSydney Kingsford Smith

Nov 18

SYD12:25 pmSydney Kingsford Smith

33h 51m

2 stops

ORD5:16 amChicago O'Hare Intl

$1,161

Find similar

ANA

Nov 6

ORD4:25 pmChicago O'Hare Intl

34h 50m

1 stop

SYD8:15 pmSydney Kingsford Smith

Nov 19

SYD12:25 pmSydney Kingsford Smith

42h 25m

1 stop

ORD1:50 pmChicago O'Hare Intl

$1,297

Find similar

ANA

Sep 23

ORD5:45 pmChicago O'Hare Intl

34h 30m

1 stop

SYD7:15 pmSydney Kingsford Smith

Oct 21

SYD12:50 pmSydney Kingsford Smith

33h 20m

2 stops

ORD6:10 amChicago O'Hare Intl

$1,460

Find similar

Air New Zealand flights from Chicago to Australia

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

Air New Zealand

Oct 28

ORD3:40 pmChicago O'Hare Intl

27h 15m

2 stops

BNE9:55 amBrisbane

Nov 18

BNE8:20 amBrisbane

26h 30m

2 stops

ORD6:50 pmChicago O'Hare Intl

$1,258

Find similar

Air New Zealand

Oct 29

ORD3:40 pmChicago O'Hare Intl

25h 05m

2 stops

SYD8:45 amSydney Kingsford Smith

Nov 12

SYD11:45 amSydney Kingsford Smith

25h 11m

2 stops

ORD7:56 pmChicago O'Hare Intl

$1,263

Find similar

Air New Zealand

Feb 17

ORD12:55 pmChicago O'Hare Intl

29h 00m

2 stops

BNE9:55 amBrisbane

Feb 25

BNE11:10 amBrisbane

25h 06m

2 stops

ORD8:16 pmChicago O'Hare Intl

$1,274

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Mon 10/27

12:03 pm-9:00 am

2 stops28h 57m

Sydney Kingsford Smith

Sun 11/9

2:05 pm-10:03 pm

2 stops24h 58m

$1,033

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Mon 10/20

9:44 am-8:05 am

2 stops30h 21m

Sydney Kingsford Smith

Sun 11/2

2:05 pm-11:03 pm

2 stops24h 58m

$1,072

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 11/24

3:00 pm-9:30 am

1 stop25h 30m

Melbourne

Sun 12/14

12:00 pm-4:54 pm

1 stop21h 54m

$1,372

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 3/8

5:10 pm-5:00 am

1 stop20h 50m

Brisbane

Sun 3/15

7:40 pm-11:59 pm

1 stop19h 19m

$1,375

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 2/26

2:00 pm-1:35 pm

3 stops30h 35m

Melbourne

Tue 3/17

7:10 am-7:53 pm

2 stops28h 43m

$1,415

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 12/1

3:14 pm-9:30 am

2 stops25h 16m

Melbourne

Mon 12/15

12:00 pm-11:59 pm

1 stop28h 59m

$1,436

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 3/8

2:50 pm-5:30 am

2 stops23h 40m

Brisbane

Sun 3/15

7:40 pm-11:59 pm

1 stop19h 19m

$1,447

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 2/15

2:25 pm-7:30 am

1 stop25h 05m

Brisbane

Sun 2/22

11:40 am-6:55 pm

2 stops23h 15m

$1,463

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 2/14

8:20 pm-7:30 am

1 stop43h 10m

Brisbane

Mon 2/23

11:40 am-8:02 pm

1 stop24h 22m

$1,471

ChicagoCanberra

ORD - CBR

ORDCBR

Chicago O'Hare Intl

Wed 3/4

3:40 pm-6:00 pm

2 stops33h 20m

Canberra

Wed 3/11

6:30 am-7:53 pm

2 stops29h 23m

$1,592

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 $851. If you aren’t able to travel during the month of August, then book flights to Australia from Chicago during May instead. Flights to Australia in May, while not as cheap as those in August, still average around $867.

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 $1,105 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 $859 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 9% 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

Direct flights	None

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 September 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 $647	Free Cancellation	Rating 7.5 905 reviews	Search Qantas Airways flights
ANA	PriceFrom $679	Free Cancellation	Rating 8.4 961 reviews	Search ANA flights
American Airlines	PriceFrom $679	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Fiji Airways	PriceFrom $772	Free Cancellation	Rating 8.0 205 reviews	Search Fiji Airways flights
Delta	PriceFrom $846	Free Cancellation	Rating 7.9 7,954 reviews	Search Delta flights
Air Canada	PriceFrom $896	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
United Airlines	PriceFrom $1,169	Free Cancellation	Rating 7.4 8,929 reviews	Search United Airlines flights
Qatar Airways	PriceFrom $1,229	Free Cancellation	Rating 7.4 3,624 reviews	Search Qatar Airways flights
Air New Zealand	PriceFrom $1,264	Free Cancellation	Rating 8.0 505 reviews	Search Air New Zealand flights
Cathay Pacific	PriceFrom $1,468	Free Cancellation	Rating 7.6 993 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.