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

Air Canada, Etihad Airways, and Turkish 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 August 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.

$845 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.

14:10 - 10:00ORD Chicago O'Hare Intl-BNE Brisbane

27h 50m2 stops Los Angeles Auckland Intl

08:20 - 18:54BNE Brisbane-ORD Chicago O'Hare Intl

26h 34m2 stops Auckland Intl Los Angeles

$1,728Air New Zealand

Tue, 19 Jan - Mon, 1 Feb

15:00 - 10:40ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

27h 40m2 stops Los Angeles Auckland Intl

09:55 - 18:56SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 01m2 stops Auckland Intl Los Angeles

$1,731Air New Zealand

Wed, 21 Oct - Mon, 9 Nov

13:00 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 35m2 stops Los Angeles Auckland Intl

09:55 - 18:56SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 01m2 stops Auckland Intl Los Angeles

$1,731Air New Zealand

Wed, 4 Nov - Wed, 11 Nov

15:00 - 08:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 45m2 stops Los Angeles Auckland Intl

11:50 - 18:56SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

24h 06m2 stops Auckland Intl Los Angeles

$1,731Air New Zealand

Wed, 21 Oct - Mon, 9 Nov

14:10 - 10:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

27h 25m2 stops Los Angeles Auckland Intl

09:55 - 18:54SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 59m2 stops Auckland Intl Los Angeles

$1,731Air New Zealand

Mon, 1 Feb - Wed, 3 Mar

11:00 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 35m2 stops Los Angeles Auckland Intl

09:55 - 20:22SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 27m2 stops Auckland Intl Los Angeles

$1,731Air New Zealand

Mon, 1 Feb - Wed, 10 Feb

16:45 - 10:40ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 55m2 stops Los Angeles Auckland Intl

09:55 - 21:35SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 40m2 stops Auckland Intl Los Angeles

$1,731Air New Zealand

Tue, 1 Sep - Tue, 8 Sep

14:35 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 00m2 stops Los Angeles Auckland Intl

14:05 - 20:22SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 17m2 stops Auckland Intl Los Angeles

$1,731Air New Zealand

Mon, 4 Jan - Mon, 8 Feb

18:45 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 15m1 stop Los Angeles

11:15 - 20:04SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 49m1 stop Los Angeles

$2,202Qantas Airways

Tue, 1 Dec - Sun, 13 Dec

18:45 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 15m1 stop Los Angeles

11:15 - 16:51SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 36m1 stop Los Angeles

$2,211Qantas Airways

Tue, 1 Dec - Sun, 13 Dec

Cheap last-minute flights

Enter your travel dates to find the best prices.

15:40 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 40m1 stop Vancouver Intl

09:20 - 14:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 16m1 stop Vancouver Intl

$1,871Air Canada

Mon, 17 Aug - Tue, 25 Aug

11:05 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

09:20 - 14:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 16m1 stop Vancouver Intl

$1,875Air Canada

Mon, 17 Aug - Tue, 25 Aug

21:13 - 07:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 17m1 stop Los Angeles

17:50 - 06:17SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 27m1 stop Los Angeles

$1,888Multiple Airlines

Fri, 14 Aug - Mon, 31 Aug

11:05 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

09:20 - 14:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 16m1 stop Vancouver Intl

$1,928Air Canada

Thu, 13 Aug - Tue, 25 Aug

19:48 - 12:20ORD Chicago O'Hare Intl-MEL Melbourne

25h 32m2 stops Vancouver Intl Brisbane

20:30 - 19:48MEL Melbourne-ORD Chicago O'Hare Intl

38h 18m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

$1,935Air Canada

Sun, 16 Aug - Wed, 9 Sep

08:44 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 36m2 stops Calgary Vancouver Intl

09:20 - 14:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 16m1 stop Vancouver Intl

$1,938Air Canada

Thu, 13 Aug - Tue, 25 Aug

10:16 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

29h 49m2 stops Orlando Los Angeles

17:50 - 06:17SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 27m1 stop Los Angeles

$1,942Multiple Airlines

Fri, 14 Aug - Mon, 31 Aug

08:40 - 07:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

09:20 - 14:36SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 16m1 stop Vancouver Intl

$1,982Air Canada

Thu, 13 Aug - Thu, 20 Aug

17:16 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 49m1 stop Los Angeles

20:15 - 07:10SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

25h 55m2 stops Honolulu Los Angeles

$2,832Qantas Airways

Thu, 13 Aug - Sat, 15 Aug

17:16 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 49m1 stop Los Angeles

09:10 - 16:48SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 38m1 stop Los Angeles

$3,234Qantas Airways

Thu, 13 Aug - Sat, 15 Aug

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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

30 Aug

ORD15:40Chicago O'Hare Intl

24h 40m

1 stop

SYD07:20Sydney Kingsford Smith

13 Sept

SYD09:20Sydney Kingsford Smith

20h 23m

1 stop

ORD14:43Chicago O'Hare Intl

$1,765

Air Canada

30 Aug

ORD15:40Chicago O'Hare Intl

24h 40m

1 stop

SYD07:20Sydney Kingsford Smith

13 Sept

SYD09:20Sydney Kingsford Smith

37h 40m

2 stops

ORD08:00Chicago O'Hare Intl

$1,776

Air Canada

27 Sept

ORD11:05Chicago O'Hare Intl

29h 15m

3 stops

SYD07:20Sydney Kingsford Smith

12 Oct

SYD10:20Sydney Kingsford Smith

25h 52m

2 stops

ORD20:12Chicago O'Hare Intl

$1,822

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 Jan

ORD14:10Chicago O'Hare Intl

27h 50m

2 stops

BNE10:00Brisbane

1 Feb

BNE08:20Brisbane

26h 34m

2 stops

ORD18:54Chicago O'Hare Intl

$1,728

Air New Zealand

1 Feb

ORD14:10Chicago O'Hare Intl

27h 25m

2 stops

SYD10:35Sydney Kingsford Smith

3 Mar

SYD09:55Sydney Kingsford Smith

25h 59m

2 stops

ORD18:54Chicago O'Hare Intl

$1,731

Air New Zealand

4 Nov

ORD13:00Chicago O'Hare Intl

26h 35m

2 stops

SYD08:35Sydney Kingsford Smith

18 Nov

SYD11:50Sydney Kingsford Smith

24h 06m

2 stops

ORD18:56Chicago O'Hare Intl

$1,732

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

ChicagoBrisbane

ORD Chicago O'Hare Intl - BNE Brisbane

ORDBNE

Chicago O'Hare Intl

Tue 19/1

14:10-10:00

2 stops27h 50m

Brisbane

Mon 1/2

08:20-18:54

2 stops26h 34m

$1,728

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 21/10

15:00-10:40

2 stops27h 40m

Sydney Kingsford Smith

Mon 9/11

09:55-18:56

2 stops26h 01m

$1,731

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 4/11

13:00-08:35

2 stops26h 35m

Sydney Kingsford Smith

Wed 11/11

09:55-18:56

2 stops26h 01m

$1,731

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 21/10

15:00-08:45

2 stops25h 45m

Sydney Kingsford Smith

Mon 9/11

11:50-18:56

2 stops24h 06m

$1,731

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 1/2

14:10-10:35

2 stops27h 25m

Sydney Kingsford Smith

Wed 3/3

09:55-18:54

2 stops25h 59m

$1,731

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 1/2

11:00-08:35

2 stops28h 35m

Sydney Kingsford Smith

Wed 10/2

09:55-20:22

2 stops27h 27m

$1,731

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/9

16:45-10:40

2 stops26h 55m

Sydney Kingsford Smith

Tue 8/9

09:55-21:35

2 stops26h 40m

$1,731

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 4/1

14:35-08:35

2 stops25h 00m

Sydney Kingsford Smith

Mon 8/2

14:05-20:22

2 stops23h 17m

$1,731

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/12

18:45-09:00

1 stop21h 15m

Sydney Kingsford Smith

Sun 13/12

11:15-20:04

1 stop25h 49m

$2,202

Fastest return journey

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/12

18:45-09:00

1 stop21h 15m

Sydney Kingsford Smith

Sun 13/12

11:15-16:51

1 stop22h 36m

$2,211

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, January 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 $1,822. If you don’t want to visit Australia in January, then you should wait until June to fly from Chicago O'Hare Intl Airport, when ticket prices are also cheap, with an average price of $1,854.

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 $2,011 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 $1,645 on momondo.

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

You could potentially save up to 8% 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	23h 30m
Direct flights	None

The fastest flight from Chicago O'Hare Intl Airport to Australia takes 23h 30m

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 August 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 $2,080	Free cancellation	Rating 7.5 1,081 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.