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

Qantas Airways, American Airlines, and United Airlines are the most popular carriers operating from Chicago O'Hare Intl 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 O'Hare Intl Airport according to our data. Qantas Airways is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 9 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 9 operators available for flights from Chicago O'Hare Intl Airport to Australia as of May 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.

$579 Cheap Flights from Chicago O'Hare Intl Airport to Australia in 2026

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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.

6:20 pm - 7:20 pm

ORD

MEL

34h 00m

2 stops

7:30 am - 9:22 pm

MEL

ORD

28h 52m

2 stops

$1,197Multiple Airlines

Tue, Jun 23 - Sat, Aug 1

6:29 pm - 7:20 pm

ORD

MEL

33h 51m

2 stops

7:30 am - 9:22 pm

MEL

ORD

28h 52m

2 stops

$1,230Multiple Airlines

Sat, Jun 27 - Sat, Aug 1

8:40 am - 7:05 am

ORD

BNE

31h 25m

2 stops

10:15 am - 9:38 am

BNE

ORD

38h 23m

2 stops

$1,394Air Canada

Tue, Jun 2 - Tue, Jun 16

3:40 pm - 7:05 am

ORD

BNE

24h 25m

1 stop

10:00 am - 2:48 pm

BNE

ORD

19h 48m

1 stop

$1,397Air Canada

Tue, Aug 4 - Wed, Sep 16

8:46 am - 10:55 am

ORD

ADL

35h 39m

2 stops

6:00 am - 5:05 pm

ADL

ORD

25h 35m

2 stops

$1,616Air New Zealand

Mon, Aug 10 - Wed, Aug 19

6:10 pm - 1:35 pm

ORD

ADL

28h 55m

2 stops

12:05 pm - 11:10 pm

ADL

ORD

25h 35m

2 stops

$1,627Air New Zealand

Mon, Aug 10 - Wed, Aug 19

3:21 pm - 10:20 am

ORD

CBR

27h 59m

2 stops

6:10 am - 2:23 pm

CBR

ORD

23h 13m

2 stops

$1,697American Airlines

Sat, Aug 8 - Sun, Aug 16

5:10 pm - 3:00 pm

ORD

CNS

30h 50m

2 stops

3:45 pm - 4:59 am

CNS

ORD

28h 14m

2 stops

$1,703American Airlines

Tue, Jul 28 - Fri, Aug 7

6:02 pm - 10:45 am

ORD

HBA

24h 43m

2 stops

10:10 am - 7:49 pm

HBA

ORD

25h 39m

2 stops

$1,776Qantas Airways

Sat, Oct 3 - Sat, Oct 10

7:08 pm - 11:05 am

ORD

ADL

25h 27m

2 stops

6:00 am - 3:54 pm

ADL

ORD

24h 24m

2 stops

$1,815Qantas Airways

Sun, Aug 2 - Sun, Aug 9

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

Jun 22

ORD3:40 pmChicago O'Hare Intl

24h 40m

1 stop

SYD7:20 amSydney Kingsford Smith

Jul 8

SYD9:20 amSydney Kingsford Smith

20h 21m

1 stop

ORD2:41 pmChicago O'Hare Intl

$1,343

Air Canada

Jun 2

ORD8:40 amChicago O'Hare Intl

31h 25m

2 stops

BNE7:05 amBrisbane

Jun 16

BNE10:15 amBrisbane

38h 23m

2 stops

ORD9:38 amChicago O'Hare Intl

$1,394

Air Canada

Aug 4

ORD3:40 pmChicago O'Hare Intl

24h 25m

1 stop

BNE7:05 amBrisbane

Sep 16

BNE10:00 amBrisbane

19h 48m

1 stop

ORD2:48 pmChicago O'Hare Intl

$1,397

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 26

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

$1,231

ANA

Aug 26

ORD5:45 pmChicago O'Hare Intl

24h 40m

1 stop

SYD9:25 amSydney Kingsford Smith

Sep 8

SYD11:45 amSydney Kingsford Smith

32h 00m

2 stops

ORD4:45 amChicago O'Hare Intl

$1,241

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

$1,242

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

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 6/23

6:20 pm-7:20 pm

2 stops34h 00m

Melbourne

Sat 8/1

7:30 am-9:22 pm

2 stops28h 52m

$1,197

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sat 6/27

6:29 pm-7:20 pm

2 stops33h 51m

Melbourne

Sat 8/1

7:30 am-9:22 pm

2 stops28h 52m

$1,230

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 6/2

8:40 am-7:05 am

2 stops31h 25m

Brisbane

Tue 6/16

10:15 am-9:38 am

2 stops38h 23m

$1,394

Quickest round-trip

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 8/4

3:40 pm-7:05 am

1 stop24h 25m

Brisbane

Wed 9/16

10:00 am-2:48 pm

1 stop19h 48m

$1,397

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/10

8:46 am-10:55 am

2 stops35h 39m

Adelaide

Wed 8/19

6:00 am-5:05 pm

2 stops25h 35m

$1,616

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/10

6:10 pm-1:35 pm

2 stops28h 55m

Adelaide

Wed 8/19

12:05 pm-11:10 pm

2 stops25h 35m

$1,627

ChicagoCanberra

ORD - CBR

ORDCBR

Chicago O'Hare Intl

Sat 8/8

3:21 pm-10:20 am

2 stops27h 59m

Canberra

Sun 8/16

6:10 am-2:23 pm

2 stops23h 13m

$1,697

ChicagoCairns

ORD - CNS

ORDCNS

Chicago O'Hare Intl

Tue 7/28

5:10 pm-3:00 pm

2 stops30h 50m

Cairns

Fri 8/7

3:45 pm-4:59 am

2 stops28h 14m

$1,703

ChicagoHobart

ORD - HBA

ORDHBA

Chicago O'Hare Intl

Sat 10/3

6:02 pm-10:45 am

2 stops24h 43m

Hobart

Sat 10/10

10:10 am-7:49 pm

2 stops25h 39m

$1,776

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 8/2

7:08 pm-11:05 am

2 stops25h 27m

Adelaide

Sun 8/9

6:00 am-3:54 pm

2 stops24h 24m

$1,815

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 August instead. Flights to Australia in August, while not as cheap as those in November, still average around $138.

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 $1,388 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 $1,126 on momondo.

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

You could potentially save up to 14% 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 50m
Direct flights	None

The fastest flight from Chicago O'Hare Intl Airport to Australia takes 20h 50m

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 9 operators available for flights from Chicago O'Hare Intl Airport to Australia as of May 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 11,661 reviews	Search American Airlines flights
Air Canada	PriceFrom $712	Free Cancellation	Rating 7.1 11,019 reviews	Search Air Canada flights
Fiji Airways	PriceFrom $716	Free Cancellation	Rating 8.1 240 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $836	Free Cancellation	Rating 7.5 1,035 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 9,701 reviews	Search United Airlines flights
ANA	PriceFrom $1,193	Free Cancellation	Rating 8.3 1,208 reviews	Search ANA flights
Air New Zealand	PriceFrom $1,217	Free Cancellation	Rating 8.0 642 reviews	Search Air New Zealand flights
Qatar Airways	PriceFrom $1,263	Free Cancellation	Rating 7.4 3,728 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,418	Free Cancellation	Rating 7.6 1,329 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.