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

When did momondo last update prices for flights from Chicago to Australia?

Prices for flights from Chicago to Australia are updated daily.

How many operators does momondo search for flights from Chicago to Australia?

As of April 2026, there is 1 operator available to choose from for flights from Chicago to Australia.

How old do you have to be to fly from Chicago to Australia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify 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 required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$694 Cheap Flights from Chicago to Australia in 2026

1 adult

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Australia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

07:15 - 11:50

ORD

SYD

37h 35m

2 stops

13:15 - 12:04

SYD

ORD

37h 49m

3 stops

$1,676Multiple Airlines

Fri, 22 May - Sat, 30 May

18:56 - 19:20

ORD

MEL

33h 24m

2 stops

07:30 - 21:14

MEL

ORD

28h 44m

2 stops

$1,693Multiple Airlines

Thu, 7 May - Sat, 16 May

17:45 - 19:10

ORD

SYD

34h 25m

1 stop

20:55 - 08:40

SYD

ORD

26h 45m

1 stop

$1,715ANA

Wed, 26 Aug - Tue, 8 Sep

19:50 - 19:10

ORD

SYD

32h 20m

2 stops

20:55 - 08:40

SYD

ORD

26h 45m

1 stop

$1,720ANA

Wed, 26 Aug - Tue, 8 Sep

15:40 - 07:05

ORD

BNE

24h 25m

1 stop

10:00 - 14:41

BNE

ORD

19h 41m

1 stop

$1,793Air Canada

Mon, 13 Jul - Sun, 26 Jul

14:15 - 07:05

ORD

BNE

25h 50m

2 stops

10:00 - 14:41

BNE

ORD

19h 41m

1 stop

$1,805Air Canada

Mon, 13 Jul - Sun, 26 Jul

15:20 - 09:25

ORD

ADL

27h 35m

2 stops

06:00 - 17:43

ADL

ORD

26h 13m

2 stops

$1,914Qantas Airways

Thu, 28 May - Thu, 4 Jun

16:30 - 09:25

ORD

ADL

26h 25m

2 stops

06:00 - 16:44

ADL

ORD

25h 14m

2 stops

$1,916Qantas Airways

Tue, 12 May - Fri, 29 May

10:59 - 06:50

MDW

SYD

28h 51m

2 stops

09:15 - 18:18

SYD

MDW

24h 03m

2 stops

$1,981Delta

Sun, 31 May - Sun, 7 Jun

12:45 - 06:50

MDW

SYD

27h 05m

2 stops

09:15 - 18:18

SYD

MDW

24h 03m

2 stops

$1,983Delta

Tue, 9 Jun - Wed, 8 Jul

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ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

1 Sept

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD19:10Sydney Kingsford Smith

8 Sept

SYD20:55Sydney Kingsford Smith

26h 45m

1 stop

ORD08:40Chicago O'Hare Intl

$1,715

ANA

1 Sept

ORD19:50Chicago O'Hare Intl

32h 20m

2 stops

SYD19:10Sydney Kingsford Smith

8 Sept

SYD20:55Sydney Kingsford Smith

26h 45m

1 stop

ORD08:40Chicago O'Hare Intl

$1,720

ANA

26 Aug

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD19:10Sydney Kingsford Smith

8 Sept

SYD11:45Sydney Kingsford Smith

32h 00m

2 stops

ORD04:45Chicago O'Hare Intl

$1,727

Air Canada flights from Chicago to Australia

Our best Air Canada deals on Chicago to Australia flight tickets

Air Canada

13 July

ORD15:40Chicago O'Hare Intl

24h 25m

1 stop

BNE07:05Brisbane

26 July

BNE10:00Brisbane

19h 41m

1 stop

ORD14:41Chicago O'Hare Intl

$1,793

Air Canada

13 July

ORD11:05Chicago O'Hare Intl

29h 00m

2 stops

BNE07:05Brisbane

26 July

BNE10:00Brisbane

19h 41m

1 stop

ORD14:41Chicago O'Hare Intl

$1,798

Air Canada

13 July

ORD14:15Chicago O'Hare Intl

25h 50m

2 stops

BNE07:05Brisbane

26 July

BNE10:00Brisbane

19h 41m

1 stop

ORD14:41Chicago O'Hare Intl

$1,805

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 22/5

07:15-11:50

2 stops37h 35m

Sydney Kingsford Smith

Sat 30/5

13:15-12:04

3 stops37h 49m

$1,676

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 7/5

18:56-19:20

2 stops33h 24m

Melbourne

Sat 16/5

07:30-21:14

2 stops28h 44m

$1,693

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 26/8

17:45-19:10

1 stop34h 25m

Sydney Kingsford Smith

Tue 8/9

20:55-08:40

1 stop26h 45m

$1,715

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 26/8

19:50-19:10

2 stops32h 20m

Sydney Kingsford Smith

Tue 8/9

20:55-08:40

1 stop26h 45m

$1,720

Fastest return journey

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 13/7

15:40-07:05

1 stop24h 25m

Brisbane

Sun 26/7

10:00-14:41

1 stop19h 41m

$1,793

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 13/7

14:15-07:05

2 stops25h 50m

Brisbane

Sun 26/7

10:00-14:41

1 stop19h 41m

$1,805

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 28/5

15:20-09:25

2 stops27h 35m

Adelaide

Thu 4/6

06:00-17:43

2 stops26h 13m

$1,914

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 12/5

16:30-09:25

2 stops26h 25m

Adelaide

Fri 29/5

06:00-16:44

2 stops25h 14m

$1,916

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Sun 31/5

10:59-06:50

2 stops28h 51m

Sydney Kingsford Smith

Sun 7/6

09:15-18:18

2 stops24h 03m

$1,981

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Tue 9/6

12:45-06:50

2 stops27h 05m

Sydney Kingsford Smith

Wed 8/7

09:15-18:18

2 stops24h 03m

$1,983

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 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, February is the cheapest month to fly from Chicago to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,602. If you don’t want to visit Australia in February, then you should wait until September to fly from Chicago, when ticket prices are also cheap, with an average price of $1,879.

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 $1,927 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 for as low as $1,511 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 1% 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 are updated daily.
How many operators does momondo search for flights from Chicago to Australia?
As of April 2026, there is 1 operator available to choose from for flights from Chicago to Australia.
How old do you have to be to fly from Chicago to Australia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify 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 required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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
Qantas Airways	PriceFrom $1,886	Free cancellation	Rating 7.5 1,019 reviews		Search Qantas Airways flights

Why use momondo?

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

Finding the right flight to Australia from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.

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

Yes. All flights to Australia from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

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.