What is the cheapest airline that flies from Chicago O'Hare Intl to Australia?

ANA, Air Canada, and Etihad Airways are the most popular carriers operating from Chicago O'Hare Intl 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 O'Hare Intl Airport according to our data. Qantas Airways is the first choice among our users, with 44% 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 O'Hare Intl Airport to Australia?

Prices for flights from Chicago O'Hare Intl Airport to Australia were last updated today.

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Australia?

There are 10 operators available for flights from Chicago O'Hare Intl Airport to Australia as of June 2026.

How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Australia.

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

The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$479 Cheap Flights from Chicago O'Hare Intl Airport to Australia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago O'Hare Intl Airport to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:20 am - 11:50 am

ORD

SYD

35h 30m

3 stops

1:15 pm - 5:59 am

SYD

ORD

31h 44m

2 stops

$989Multiple Airlines

Wed, Aug 12 - Wed, Aug 19

9:20 am - 11:40 am

ORD

CNS

35h 20m

3 stops

12:40 pm - 5:59 am

CNS

ORD

32h 19m

2 stops

$1,010Multiple Airlines

Thu, Aug 13 - Thu, Aug 20

9:20 am - 11:50 am

ORD

SYD

35h 30m

3 stops

1:15 pm - 5:59 am

SYD

ORD

31h 44m

2 stops

$1,016Multiple Airlines

Thu, Aug 13 - Thu, Aug 20

4:45 pm - 11:05 am

ORD

BNE

27h 20m

2 stops

12:20 pm - 11:26 pm

BNE

ORD

26h 06m

2 stops

$1,279Air New Zealand

Wed, Aug 19 - Wed, Aug 26

6:00 am - 10:55 am

ORD

MEL

37h 55m

2 stops

12:10 pm - 11:26 pm

MEL

ORD

26h 16m

2 stops

$1,334Air New Zealand

Mon, Aug 10 - Mon, Aug 24

3:30 pm - 1:55 pm

ORD

ADL

29h 55m

2 stops

6:10 am - 2:37 pm

ADL

ORD

24h 57m

2 stops

$1,441Air Canada

Wed, Nov 25 - Tue, Dec 1

3:40 pm - 7:25 pm

ORD

ADL

36h 15m

2 stops

6:10 am - 8:01 pm

ADL

ORD

30h 21m

2 stops

$1,443Air Canada

Mon, Oct 19 - Tue, Nov 10

12:40 pm - 5:10 pm

ORD

HBA

35h 30m

2 stops

9:20 pm - 2:36 pm

HBA

ORD

34h 16m

2 stops

$1,742United Airlines

Sun, Nov 15 - Sun, Dec 6

9:06 pm - 8:05 pm

ORD

AVV

55h 59m

2 stops

8:55 pm - 2:54 pm

AVV

ORD

32h 59m

2 stops

$2,449Qantas Airways

Tue, Aug 25 - Thu, Sep 3

8:35 am - 11:40 am

ORD

DRW

36h 35m

2 stops

1:50 am - 5:45 pm

DRW

ORD

30h 25m

2 stops

$2,539Qantas Airways

Thu, Oct 15 - Sun, Oct 18

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Air Canada flights from Chicago O'Hare Intl Airport to Australia

Our best Air Canada deals on Chicago O'Hare Intl Airport to Australia flight tickets

Air Canada

Aug 8

ORD3:40 pmChicago O'Hare Intl

28h 40m

2 stops

MEL11:20 amMelbourne

Aug 26

MEL6:00 amMelbourne

23h 36m

2 stops

ORD2:36 pmChicago O'Hare Intl

$1,359

Air Canada

Aug 8

ORD3:40 pmChicago O'Hare Intl

28h 40m

2 stops

MEL11:20 amMelbourne

Aug 26

MEL6:00 amMelbourne

31h 05m

3 stops

ORD10:05 pmChicago O'Hare Intl

$1,370

Air Canada

Oct 16

ORD8:49 amChicago O'Hare Intl

31h 16m

1 stop

BNE7:05 amBrisbane

Oct 25

BNE9:45 amBrisbane

34h 03m

2 stops

ORD4:48 amChicago O'Hare Intl

$1,389

ANA flights from Chicago O'Hare Intl Airport to Australia

Our best ANA deals on Chicago O'Hare Intl Airport to Australia flight tickets

ANA

Aug 16

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Aug 29

SYD11:45 amSydney Kingsford Smith

32h 00m

2 stops

ORD4:45 amChicago O'Hare Intl

$1,195

ANA

Aug 16

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Aug 29

SYD11:45 amSydney Kingsford Smith

42h 10m

1 stop

ORD2:55 pmChicago O'Hare Intl

$1,202

ANA

Aug 13

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Aug 29

SYD8:55 pmSydney Kingsford Smith

33h 00m

1 stop

ORD2:55 pmChicago O'Hare Intl

$1,247

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/12

9:20 am-11:50 am

3 stops35h 30m

Sydney Kingsford Smith

Wed 8/19

1:15 pm-5:59 am

2 stops31h 44m

$989

ChicagoCairns

ORD - CNS

ORDCNS

Chicago O'Hare Intl

Thu 8/13

9:20 am-11:40 am

3 stops35h 20m

Cairns

Thu 8/20

12:40 pm-5:59 am

2 stops32h 19m

$1,010

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 8/13

9:20 am-11:50 am

3 stops35h 30m

Sydney Kingsford Smith

Thu 8/20

1:15 pm-5:59 am

2 stops31h 44m

$1,016

Quickest round-trip

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 8/19

4:45 pm-11:05 am

2 stops27h 20m

Brisbane

Wed 8/26

12:20 pm-11:26 pm

2 stops26h 06m

$1,279

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 8/10

6:00 am-10:55 am

2 stops37h 55m

Melbourne

Mon 8/24

12:10 pm-11:26 pm

2 stops26h 16m

$1,334

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 11/25

3:30 pm-1:55 pm

2 stops29h 55m

Adelaide

Tue 12/1

6:10 am-2:37 pm

2 stops24h 57m

$1,441

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 10/19

3:40 pm-7:25 pm

2 stops36h 15m

Adelaide

Tue 11/10

6:10 am-8:01 pm

2 stops30h 21m

$1,443

ChicagoHobart

ORD - HBA

ORDHBA

Chicago O'Hare Intl

Sun 11/15

12:40 pm-5:10 pm

2 stops35h 30m

Hobart

Sun 12/6

9:20 pm-2:36 pm

2 stops34h 16m

$1,742

ChicagoMelbourne

ORD - AVV

ORDAVV

Chicago O'Hare Intl

Tue 8/25

9:06 pm-8:05 pm

2 stops55h 59m

Melbourne Avalon

Thu 9/3

8:55 pm-2:54 pm

2 stops32h 59m

$2,449

ChicagoDarwin

ORD - DRW

ORDDRW

Chicago O'Hare Intl

Thu 10/15

8:35 am-11:40 am

2 stops36h 35m

Darwin

Sun 10/18

1:50 am-5:45 pm

2 stops30h 25m

$2,539

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 O'Hare Intl Airport 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 November is, on average, the cheapest month to fly to Australia from Chicago O'Hare Intl Airport, with most prices found around $113. If you aren’t able to travel during the month of November, then book flights to Australia from Chicago O'Hare Intl Airport during May instead. Flights to Australia in May, while not as cheap as those in November, still average around $142.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Australia?

You are more likely to see cheaper flights to Australia from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,412 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Chicago O'Hare Intl Airport for as low as $1,154 on momondo.

Can stopping save me money on Chicago O'Hare Intl Airport to Australia flights?

You could potentially save up to 31% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Australia flight.

Cheap Chicago O'Hare Intl Airport to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Australia

Fastest flight time	20h 28m
Direct flights	None

The fastest flight from Chicago O'Hare Intl Airport to Australia takes 20h 28m

There are no direct flights from Chicago O'Hare Intl Airport to Australia. There are no popular flight routes from Chicago O'Hare Intl Airport to Australia.

Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Australia

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Australia?
Prices for flights from Chicago O'Hare Intl Airport to Australia were last updated today.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Australia?
There are 10 operators available for flights from Chicago O'Hare Intl Airport to Australia as of June 2026.
How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Chicago O'Hare Intl Airport to Australia

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Australia with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $198	Free Cancellation	Rating 7.1 11,765 reviews	Search American Airlines flights
Delta	PriceFrom $261	Free Cancellation	Rating 7.8 8,451 reviews	Search Delta flights
Air Canada	PriceFrom $712	Free Cancellation	Rating 7.1 11,273 reviews	Search Air Canada flights
Fiji Airways	PriceFrom $716	Free Cancellation	Rating 8.1 245 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $836	Free Cancellation	Rating 7.5 1,054 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 9,897 reviews	Search United Airlines flights
ANA	PriceFrom $1,193	Free Cancellation	Rating 8.3 1,259 reviews	Search ANA flights
Qatar Airways	PriceFrom $1,263	Free Cancellation	Rating 7.3 3,738 reviews	Search Qatar Airways flights
Air New Zealand	PriceFrom $1,264	Free Cancellation	Rating 8.0 647 reviews	Search Air New Zealand flights
Cathay Pacific	PriceFrom $1,560	Free Cancellation	Rating 7.6 1,398 reviews	Search Cathay Pacific flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Australia. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Australia from Chicago which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Australia from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.