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

Air Canada, Delta, and Qantas Airways are the most popular carriers operating from Chicago to Australia

What airlines fly to Australia?

Qantas Airways, United Airlines and Air Canada 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 46% 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 April 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.

$498 Cheap Flights from Chicago to Australia in 2026

1 adult

0 bags

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.

7:15 am - 11:50 am

ORD

SYD

37h 35m

2 stops

1:15 pm - 12:04 pm

SYD

ORD

37h 49m

3 stops

$1,202Multiple Airlines

vie., may. 22 - sáb., may. 30

6:56 pm - 7:20 pm

ORD

MEL

33h 24m

2 stops

7:30 am - 9:14 pm

MEL

ORD

28h 44m

2 stops

$1,214Multiple Airlines

jue., may. 7 - sáb., may. 16

5:45 pm - 7:10 pm

ORD

SYD

34h 25m

1 stop

8:55 pm - 8:40 am

SYD

ORD

26h 45m

1 stop

$1,230ANA

mar., sep. 1 - mar., sep. 8

7:50 pm - 7:10 pm

ORD

SYD

32h 20m

2 stops

8:55 pm - 8:40 am

SYD

ORD

26h 45m

1 stop

$1,234ANA

mar., sep. 1 - mar., sep. 8

3:40 pm - 7:05 am

ORD

BNE

24h 25m

1 stop

10:00 am - 2:41 pm

BNE

ORD

19h 41m

1 stop

$1,286Air Canada

lun., jul. 13 - dom., jul. 26

2:15 pm - 7:05 am

ORD

BNE

25h 50m

2 stops

10:00 am - 2:41 pm

BNE

ORD

19h 41m

1 stop

$1,295Air Canada

lun., jul. 13 - dom., jul. 26

3:20 pm - 9:25 am

ORD

ADL

27h 35m

2 stops

6:00 am - 5:43 pm

ADL

ORD

26h 13m

2 stops

$1,373Qantas Airways

jue., may. 28 - jue., jun. 4

4:30 pm - 9:25 am

ORD

ADL

26h 25m

2 stops

6:00 am - 4:44 pm

ADL

ORD

25h 14m

2 stops

$1,374Qantas Airways

mar., may. 12 - vie., may. 29

10:59 am - 6:50 am

MDW

SYD

28h 51m

2 stops

9:15 am - 6:18 pm

SYD

MDW

24h 03m

2 stops

$1,421Delta

dom., may. 31 - dom., jun. 7

12:53 pm - 6:50 am

MDW

SYD

26h 57m

2 stops

9:15 am - 6:18 pm

SYD

MDW

24h 03m

2 stops

$1,422Delta

lun., jun. 1 - lun., jun. 15

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

ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

Sep 1

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Sep 8

SYD8:55 pmSydney Kingsford Smith

26h 45m

1 stop

ORD8:40 amChicago O'Hare Intl

$1,230

ANA

Sep 1

ORD7:50 pmChicago O'Hare Intl

32h 20m

2 stops

SYD7:10 pmSydney Kingsford Smith

Sep 8

SYD8:55 pmSydney Kingsford Smith

26h 45m

1 stop

ORD8:40 amChicago O'Hare Intl

$1,234

ANA

Aug 26

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Sep 8

SYD11:45 amSydney Kingsford Smith

32h 00m

2 stops

ORD4:45 amChicago O'Hare Intl

$1,239

Air Canada flights from Chicago to Australia

Our best Air Canada deals on Chicago to Australia flight tickets

Air Canada

Jul 13

ORD3:40 pmChicago O'Hare Intl

24h 25m

1 stop

BNE7:05 amBrisbane

Jul 26

BNE10:00 amBrisbane

19h 41m

1 stop

ORD2:41 pmChicago O'Hare Intl

$1,286

Air Canada

Jul 13

ORD2:15 pmChicago O'Hare Intl

25h 50m

2 stops

BNE7:05 amBrisbane

Jul 26

BNE10:00 amBrisbane

19h 41m

1 stop

ORD2:41 pmChicago O'Hare Intl

$1,295

Air Canada

Jul 13

ORD9:14 amChicago O'Hare Intl

30h 51m

2 stops

BNE7:05 amBrisbane

Jul 26

BNE10:00 amBrisbane

36h 50m

2 stops

ORD7:50 amChicago O'Hare Intl

$1,300

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

vie. 5/22

7:15 am-11:50 am

2 stops37h 35m

Sydney Kingsford Smith

sáb. 5/30

1:15 pm-12:04 pm

3 stops37h 49m

$1,202

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

jue. 5/7

6:56 pm-7:20 pm

2 stops33h 24m

Melbourne

sáb. 5/16

7:30 am-9:14 pm

2 stops28h 44m

$1,214

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mar. 9/1

5:45 pm-7:10 pm

1 stop34h 25m

Sydney Kingsford Smith

mar. 9/8

8:55 pm-8:40 am

1 stop26h 45m

$1,230

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mar. 9/1

7:50 pm-7:10 pm

2 stops32h 20m

Sydney Kingsford Smith

mar. 9/8

8:55 pm-8:40 am

1 stop26h 45m

$1,234

Quickest round-trip

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

lun. 7/13

3:40 pm-7:05 am

1 stop24h 25m

Brisbane

dom. 7/26

10:00 am-2:41 pm

1 stop19h 41m

$1,286

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

lun. 7/13

2:15 pm-7:05 am

2 stops25h 50m

Brisbane

dom. 7/26

10:00 am-2:41 pm

1 stop19h 41m

$1,295

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

jue. 5/28

3:20 pm-9:25 am

2 stops27h 35m

Adelaide

jue. 6/4

6:00 am-5:43 pm

2 stops26h 13m

$1,373

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

mar. 5/12

4:30 pm-9:25 am

2 stops26h 25m

Adelaide

vie. 5/29

6:00 am-4:44 pm

2 stops25h 14m

$1,374

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

dom. 5/31

10:59 am-6:50 am

2 stops28h 51m

Sydney Kingsford Smith

dom. 6/7

9:15 am-6:18 pm

2 stops24h 03m

$1,421

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

lun. 6/1

12:53 pm-6:50 am

2 stops26h 57m

Sydney Kingsford Smith

lun. 6/15

9:15 am-6:18 pm

2 stops24h 03m

$1,422

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 $1,149. If you aren’t able to travel during the month of February, then book flights to Australia from Chicago during September instead. Flights to Australia in September, while not as cheap as those in February, still average around $1,348.

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 $1,382 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 $1,084 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 18% 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	20h 44m
Direct flights	None

The fastest flight from Chicago to Australia takes 20h 44m

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 April 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
American Airlines	PriceFrom $198	Free Cancellation	Rating 7.1 11,600 reviews	Search American Airlines flights
Delta	PriceFrom $317	Free Cancellation	Rating 7.9 8,422 reviews	Search Delta flights
Air Canada	PriceFrom $712	Free Cancellation	Rating 7.1 10,935 reviews	Search Air Canada flights
Fiji Airways	PriceFrom $716	Free Cancellation	Rating 8.1 240 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $837	Free Cancellation	Rating 7.5 1,019 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 9,604 reviews	Search United Airlines flights
ANA	PriceFrom $1,177	Free Cancellation	Rating 8.4 1,179 reviews	Search ANA flights
Air New Zealand	PriceFrom $1,217	Free Cancellation	Rating 8.0 630 reviews	Search Air New Zealand flights
Qatar Airways	PriceFrom $1,263	Free Cancellation	Rating 7.4 3,730 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,470	Free Cancellation	Rating 7.6 1,276 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.