What is the cheapest airline that flies from Chicago to Australia?

Philippine Airlines and Delta 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 February 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.

$655 Cheap Flights from Chicago to Australia in 2026

1 adult

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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.

13:24 - 09:00

ORD

SYD

26h 36m

1 stop

07:05 - 14:53

SYD

ORD

24h 48m

2 stops

$1,335Qantas Airways

Thu, 26 Feb - Tue, 3 Mar

16:49 - 08:20

ORD

MEL

47h 31m

2 stops

09:45 - 16:55

MEL

ORD

22h 10m

1 stop

$1,347Qantas Airways

Wed, 18 Mar - Fri, 10 Apr

15:40 - 07:05

ORD

BNE

24h 25m

1 stop

10:00 - 14:45

BNE

ORD

19h 45m

1 stop

$1,362Air Canada

Wed, 20 May - Sun, 31 May

08:42 - 07:05

ORD

BNE

31h 23m

2 stops

10:00 - 17:01

BNE

ORD

22h 01m

2 stops

$1,363Air Canada

Tue, 21 Apr - Tue, 5 May

06:20 - 06:45

ORD

MEL

33h 25m

1 stop

13:30 - 07:00

MEL

ORD

32h 30m

2 stops

$1,377Multiple Airlines

Mon, 4 May - Mon, 25 May

19:45 - 08:30

ORD

SYD

44h 45m

1 stop

13:15 - 05:50

SYD

ORD

31h 35m

2 stops

$1,380Multiple Airlines

Fri, 3 Apr - Mon, 4 May

09:55 - 07:05

ORD

BNE

30h 10m

2 stops

10:00 - 20:05

BNE

ORD

25h 05m

2 stops

$1,408Air New Zealand

Wed, 20 May - Sun, 31 May

14:05 - 07:20

MDW

BNE

26h 15m

2 stops

10:05 - 17:22

BNE

MDW

22h 17m

2 stops

$1,656Delta

Wed, 18 Mar - Wed, 25 Mar

18:40 - 08:20

MDW

BNE

45h 40m

2 stops

10:05 - 18:40

BNE

MDW

23h 35m

2 stops

$1,670Delta

Tue, 24 Feb - Wed, 11 Mar

16:00 - 16:50

ORD

PER

35h 50m

2 stops

18:50 - 23:00

PER

ORD

41h 10m

2 stops

$2,088Air New Zealand

Tue, 10 Mar - Sun, 22 Mar

Qantas Airways flights from Chicago to Australia

Our best Qantas Airways deals on Chicago to Australia flight tickets

Qantas Airways

26 Feb

ORD13:24Chicago O'Hare Intl

26h 36m

1 stop

SYD09:00Sydney Kingsford Smith

3 Mar

SYD07:05Sydney Kingsford Smith

24h 48m

2 stops

ORD14:53Chicago O'Hare Intl

$1,335

Qantas Airways

18 Feb

ORD14:33Chicago O'Hare Intl

22h 27m

1 stop

BNE05:00Brisbane

25 Feb

BNE18:30Brisbane

36h 23m

2 stops

ORD14:53Chicago O'Hare Intl

$1,340

Qantas Airways

21 Feb

ORD20:21Chicago O'Hare Intl

42h 59m

2 stops

MEL08:20Melbourne

28 Feb

MEL12:00Melbourne

26h 35m

1 stop

ORD21:35Chicago O'Hare Intl

$1,345

Delta flights from Chicago to Australia

Our best Delta deals on Chicago to Australia flight tickets

Delta

18 Mar

MDW14:05Chicago Midway

26h 15m

2 stops

BNE07:20Brisbane

25 Mar

BNE10:05Brisbane

22h 17m

2 stops

MDW17:22Chicago Midway

$1,656

Delta

24 Feb

MDW18:40Chicago Midway

45h 40m

2 stops

BNE08:20Brisbane

11 Mar

BNE10:05Brisbane

23h 35m

2 stops

MDW18:40Chicago Midway

$1,670

Delta

22 Feb

MDW19:20Chicago Midway

45h 00m

2 stops

BNE08:20Brisbane

8 Mar

BNE10:40Brisbane

26h 51m

2 stops

MDW21:31Chicago Midway

$1,671

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 26/2

13:24-09:00

1 stop26h 36m

Sydney Kingsford Smith

Tue 3/3

07:05-14:53

2 stops24h 48m

$1,335

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 18/3

16:49-08:20

2 stops47h 31m

Melbourne

Fri 10/4

09:45-16:55

1 stop22h 10m

$1,347

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 20/5

15:40-07:05

1 stop24h 25m

Brisbane

Sun 31/5

10:00-14:45

1 stop19h 45m

$1,362

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 21/4

08:42-07:05

2 stops31h 23m

Brisbane

Tue 5/5

10:00-17:01

2 stops22h 01m

$1,363

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 4/5

06:20-06:45

1 stop33h 25m

Melbourne

Mon 25/5

13:30-07:00

2 stops32h 30m

$1,377

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 3/4

19:45-08:30

1 stop44h 45m

Sydney Kingsford Smith

Mon 4/5

13:15-05:50

2 stops31h 35m

$1,380

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 20/5

09:55-07:05

2 stops30h 10m

Brisbane

Sun 31/5

10:00-20:05

2 stops25h 05m

$1,408

ChicagoBrisbane

MDW - BNE

MDWBNE

Chicago Midway

Wed 18/3

14:05-07:20

2 stops26h 15m

Brisbane

Wed 25/3

10:05-17:22

2 stops22h 17m

$1,656

ChicagoBrisbane

MDW - BNE

MDWBNE

Chicago Midway

Tue 24/2

18:40-08:20

2 stops45h 40m

Brisbane

Wed 11/3

10:05-18:40

2 stops23h 35m

$1,670

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 10/3

16:00-16:50

2 stops35h 50m

Perth

Sun 22/3

18:50-23:00

2 stops41h 10m

$2,088

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, October 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 $1,366. If you don’t want to visit Australia in October, then you should wait until February to fly from Chicago, when ticket prices are also cheap, with an average price of $1,551.

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 $1,788 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 $1,487 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 19% 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	24h 01m
Direct flights	None

The fastest flight from Chicago to Australia takes 24h 01m

There are no direct flights from Chicago to Australia. There are no popular flight routes from Chicago to Australia.

Search flight deals

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 February 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 $1,207	Free cancellation	Rating 7.5 989 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.