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

ANA, Qantas Airways, and Philippine Airlines are the most popular carriers operating from Chicago O'Hare Intl to Australia

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

There is 1 operator 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 licence 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.

$694 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

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

09:20 - 11:50

ORD

SYD

35h 30m

3 stops

06:15 - 06:17

SYD

ORD

39h 02m

2 stops

$1,556Multiple Airlines

Mon, 24 Aug - Tue, 8 Sep

09:20 - 11:50

ORD

SYD

35h 30m

3 stops

06:15 - 23:55

SYD

ORD

56h 40m

3 stops

$1,561Multiple Airlines

Mon, 24 Aug - Tue, 8 Sep

17:45 - 19:10

ORD

SYD

34h 25m

1 stop

11:45 - 04:45

SYD

ORD

32h 00m

2 stops

$1,732ANA

Sun, 16 Aug - Sat, 29 Aug

17:45 - 19:10

ORD

SYD

34h 25m

1 stop

11:45 - 14:55

SYD

ORD

42h 10m

1 stop

$1,743ANA

Sun, 16 Aug - Sat, 29 Aug

21:13 - 11:50

ORD

SYD

47h 37m

2 stops

17:50 - 05:59

SYD

ORD

27h 09m

1 stop

$1,751Multiple Airlines

Tue, 11 Aug - Wed, 19 Aug

22:45 - 06:20

ORD

MEL

38h 35m

1 stop

09:00 - 16:55

MEL

ORD

24h 55m

1 stop

$1,821Philippine Airlines

Wed, 11 Nov - Wed, 25 Nov

16:45 - 11:05

ORD

BNE

27h 20m

2 stops

12:20 - 23:26

BNE

ORD

26h 06m

2 stops

$1,854Air New Zealand

Wed, 19 Aug - Wed, 26 Aug

15:00 - 10:55

ORD

MEL

28h 55m

2 stops

12:10 - 21:30

MEL

ORD

24h 20m

2 stops

$1,902Air New Zealand

Tue, 11 Aug - Tue, 25 Aug

08:35 - 11:40

ORD

DRW

36h 35m

2 stops

01:50 - 17:45

DRW

ORD

30h 25m

2 stops

$3,681Qantas Airways

Thu, 15 Oct - Sun, 18 Oct

08:35 - 11:40

ORD

DRW

36h 35m

2 stops

01:50 - 17:45

DRW

ORD

30h 25m

2 stops

$3,684Qantas Airways

Thu, 15 Oct - Sun, 18 Oct

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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

8 Aug

ORD15:40Chicago O'Hare Intl

28h 40m

2 stops

MEL11:20Melbourne

26 Aug

MEL06:00Melbourne

23h 36m

2 stops

ORD14:36Chicago O'Hare Intl

$1,970

Air Canada

8 Aug

ORD15:40Chicago O'Hare Intl

28h 40m

2 stops

MEL11:20Melbourne

26 Aug

MEL06:00Melbourne

31h 05m

3 stops

ORD22:05Chicago O'Hare Intl

$1,986

Air Canada

16 Oct

ORD08:49Chicago O'Hare Intl

31h 16m

1 stop

BNE07:05Brisbane

25 Oct

BNE09:45Brisbane

34h 03m

2 stops

ORD04:48Chicago O'Hare Intl

$2,014

Air New Zealand flights from Chicago O'Hare Intl Airport to Australia

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

Air New Zealand

19 Aug

ORD16:45Chicago O'Hare Intl

27h 20m

2 stops

BNE11:05Brisbane

26 Aug

BNE12:20Brisbane

26h 06m

2 stops

ORD23:26Chicago O'Hare Intl

$1,854

Air New Zealand

31 Aug

ORD14:16Chicago O'Hare Intl

27h 29m

2 stops

SYD08:45Sydney Kingsford Smith

15 Sept

SYD09:55Sydney Kingsford Smith

26h 50m

2 stops

ORD21:45Chicago O'Hare Intl

$1,901

Air New Zealand

11 Aug

ORD15:00Chicago O'Hare Intl

28h 55m

2 stops

MEL10:55Melbourne

25 Aug

MEL12:10Melbourne

24h 20m

2 stops

ORD21:30Chicago O'Hare Intl

$1,902

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 return flight

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 24/8

09:20-11:50

3 stops35h 30m

Sydney Kingsford Smith

Tue 8/9

06:15-06:17

2 stops39h 02m

$1,556

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 24/8

09:20-11:50

3 stops35h 30m

Sydney Kingsford Smith

Tue 8/9

06:15-23:55

3 stops56h 40m

$1,561

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 16/8

17:45-19:10

1 stop34h 25m

Sydney Kingsford Smith

Sat 29/8

11:45-04:45

2 stops32h 00m

$1,732

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 16/8

17:45-19:10

1 stop34h 25m

Sydney Kingsford Smith

Sat 29/8

11:45-14:55

1 stop42h 10m

$1,743

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 11/8

21:13-11:50

2 stops47h 37m

Sydney Kingsford Smith

Wed 19/8

17:50-05:59

1 stop27h 09m

$1,751

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 11/11

22:45-06:20

1 stop38h 35m

Melbourne

Wed 25/11

09:00-16:55

1 stop24h 55m

$1,821

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 19/8

16:45-11:05

2 stops27h 20m

Brisbane

Wed 26/8

12:20-23:26

2 stops26h 06m

$1,854

Fastest return journey

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 11/8

15:00-10:55

2 stops28h 55m

Melbourne

Tue 25/8

12:10-21:30

2 stops24h 20m

$1,902

ChicagoDarwin

ORD - DRW

ORDDRW

Chicago O'Hare Intl

Thu 15/10

08:35-11:40

2 stops36h 35m

Darwin

Sun 18/10

01:50-17:45

2 stops30h 25m

$3,681

ChicagoDarwin

ORD - DRW

ORDDRW

Chicago O'Hare Intl

Thu 15/10

08:35-11:40

2 stops36h 35m

Darwin

Sun 18/10

01:50-17:45

2 stops30h 25m

$3,684

Flights are sorted by cheapest return 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?

In general, November is the cheapest month to fly from Chicago O'Hare Intl Airport to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $164. If you don’t want to visit Australia in November, then you should wait until May to fly from Chicago O'Hare Intl Airport, when ticket prices are also cheap, with an average price of $206.

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 $2,048 when searching weeks before you fly. 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 $1,673 on momondo.

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

You could potentially save up to 11% 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	21h 00m
Direct flights	None

The fastest flight from Chicago O'Hare Intl Airport to Australia takes 21h 00m

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 are updated daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Australia?
There is 1 operator 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 licence 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
Qantas Airways	PriceFrom $2,131	Free cancellation	Rating 7.5 1,050 reviews		Search Qantas Airways flights

Why use momondo?

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

It is quick and easy to find Chicago to Australia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Australia that suits you.

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 you have performed a search for Chicago to Australia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chicago to Australia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Australia, momondo offers a useful price alert feature which will track prices for flights to Australia from Chicago and alert you when they change.