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

Fiji Airways, Air Canada, 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 May 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.

$764 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.

17:50 - 19:20

ORD

MEL

34h 30m

2 stops

07:30 - 21:02

MEL

ORD

28h 32m

2 stops

$1,671Multiple Airlines

Tue, 11 Aug - Sat, 15 Aug

07:15 - 12:00

ORD

MEL

37h 45m

3 stops

13:25 - 06:17

MEL

ORD

31h 52m

2 stops

$1,704Multiple Airlines

Thu, 6 Aug - Wed, 12 Aug

15:40 - 07:05

ORD

BNE

24h 25m

1 stop

10:15 - 14:36

BNE

ORD

19h 21m

1 stop

$1,795Air Canada

Mon, 10 Aug - Tue, 18 Aug

11:05 - 07:05

ORD

BNE

29h 00m

2 stops

10:15 - 14:36

BNE

ORD

19h 21m

1 stop

$1,800Air Canada

Mon, 10 Aug - Tue, 18 Aug

08:50 - 09:25

ORD

SYD

33h 35m

2 stops

11:45 - 08:40

SYD

ORD

35h 55m

1 stop

$1,810ANA

Tue, 25 Aug - Fri, 4 Sep

17:45 - 09:25

ORD

SYD

24h 40m

1 stop

11:45 - 08:40

SYD

ORD

35h 55m

1 stop

$1,811ANA

Tue, 25 Aug - Fri, 4 Sep

15:21 - 06:45

ORD

MEL

24h 24m

1 stop

13:35 - 19:42

MEL

ORD

21h 07m

1 stop

$1,821Qantas Airways

Tue, 11 Aug - Wed, 19 Aug

10:00 - 06:45

ORD

MEL

29h 45m

1 stop

09:45 - 20:00

MEL

ORD

25h 15m

1 stop

$1,884Qantas Airways

Fri, 7 Aug - Sun, 16 Aug

13:51 - 06:50

MDW

SYD

25h 59m

2 stops

09:15 - 18:33

SYD

MDW

24h 18m

2 stops

$1,982Delta

Wed, 5 Aug - Sun, 30 Aug

19:25 - 07:50

MDW

MEL

45h 25m

2 stops

10:00 - 18:33

MEL

MDW

23h 33m

2 stops

$2,019Delta

Tue, 11 Aug - Wed, 19 Aug

Air Canada flights from Chicago to Australia

Our best Air Canada deals on Chicago to Australia flight tickets

Air Canada

10 Aug

ORD15:40Chicago O'Hare Intl

24h 25m

1 stop

BNE07:05Brisbane

18 Aug

BNE10:15Brisbane

19h 21m

1 stop

ORD14:36Chicago O'Hare Intl

$1,795

Air Canada

10 Aug

ORD11:05Chicago O'Hare Intl

29h 00m

2 stops

BNE07:05Brisbane

18 Aug

BNE10:15Brisbane

19h 21m

1 stop

ORD14:36Chicago O'Hare Intl

$1,800

Air Canada

20 Oct

ORD15:40Chicago O'Hare Intl

24h 25m

1 stop

BNE07:05Brisbane

28 Oct

BNE09:45Brisbane

22h 05m

2 stops

ORD16:50Chicago O'Hare Intl

$1,809

Delta flights from Chicago to Australia

Our best Delta deals on Chicago to Australia flight tickets

Delta

10 June

ORD14:45Chicago O'Hare Intl

25h 05m

1 stop

SYD06:50Sydney Kingsford Smith

21 June

SYD09:15Sydney Kingsford Smith

23h 15m

1 stop

ORD17:30Chicago O'Hare Intl

$1,975

Delta

22 Nov

ORD14:55Chicago O'Hare Intl

25h 55m

1 stop

MEL09:50Melbourne

30 Nov

MEL12:00Melbourne

22h 21m

1 stop

ORD17:21Chicago O'Hare Intl

$1,977

Delta

5 Aug

MDW12:46Chicago Midway

27h 04m

2 stops

SYD06:50Sydney Kingsford Smith

30 Aug

SYD09:15Sydney Kingsford Smith

23h 46m

2 stops

MDW18:01Chicago Midway

$1,982

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 11/8

17:50-19:20

2 stops34h 30m

Melbourne

Sat 15/8

07:30-21:02

2 stops28h 32m

$1,671

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 6/8

07:15-12:00

3 stops37h 45m

Melbourne

Wed 12/8

13:25-06:17

2 stops31h 52m

$1,704

Fastest return journey

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 10/8

15:40-07:05

1 stop24h 25m

Brisbane

Tue 18/8

10:15-14:36

1 stop19h 21m

$1,795

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 10/8

11:05-07:05

2 stops29h 00m

Brisbane

Tue 18/8

10:15-14:36

1 stop19h 21m

$1,800

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 25/8

08:50-09:25

2 stops33h 35m

Sydney Kingsford Smith

Fri 4/9

11:45-08:40

1 stop35h 55m

$1,810

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 25/8

17:45-09:25

1 stop24h 40m

Sydney Kingsford Smith

Fri 4/9

11:45-08:40

1 stop35h 55m

$1,811

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 11/8

15:21-06:45

1 stop24h 24m

Melbourne

Wed 19/8

13:35-19:42

1 stop21h 07m

$1,821

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Fri 7/8

10:00-06:45

1 stop29h 45m

Melbourne

Sun 16/8

09:45-20:00

1 stop25h 15m

$1,884

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Wed 5/8

13:51-06:50

2 stops25h 59m

Sydney Kingsford Smith

Sun 30/8

09:15-18:33

2 stops24h 18m

$1,982

ChicagoMelbourne

MDW - MEL

MDWMEL

Chicago Midway

Tue 11/8

19:25-07:50

2 stops45h 25m

Melbourne

Wed 19/8

10:00-18:33

2 stops23h 33m

$2,019

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, November 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 $158. If you don’t want to visit Australia in November, then you should wait until August to fly from Chicago, when ticket prices are also cheap, with an average price of $193.

How far in advance should I book a flight from Chicago 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 $1,947 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 $1,578 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 27% 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 17m
Direct flights	None

The fastest flight from Chicago to Australia takes 20h 17m

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 May 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 $2,059	Free cancellation	Rating 7.5 1,043 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.