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

Philippine Airlines, Delta, and United Airlines 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 June 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.

$702 Cheap Flights from Chicago to Australia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Australia

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:05 - 11:50

MDW

SYD

38h 45m

3 stops

06:15 - 10:58

SYD

MDW

43h 43m

3 stops

$1,550Multiple Airlines

Mon, 24 Aug - Tue, 8 Sep

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

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

15:40 - 07:05

ORD

BNE

24h 25m

1 stop

10:00 - 09:43

BNE

ORD

38h 43m

2 stops

$2,017Air Canada

Mon, 3 Aug - Wed, 14 Oct

15:30 - 08:45

ORD

BNE

25h 15m

1 stop

10:45 - 14:37

BNE

ORD

19h 52m

1 stop

$2,018Air Canada

Wed, 4 Nov - Wed, 18 Nov

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ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

16 Aug

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD19:10Sydney Kingsford Smith

29 Aug

SYD11:45Sydney Kingsford Smith

32h 00m

2 stops

ORD04:45Chicago O'Hare Intl

$1,732

ANA

16 Aug

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD19:10Sydney Kingsford Smith

29 Aug

SYD11:45Sydney Kingsford Smith

42h 10m

1 stop

ORD14:55Chicago O'Hare Intl

$1,743

ANA

13 Aug

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD19:10Sydney Kingsford Smith

29 Aug

SYD20:55Sydney Kingsford Smith

33h 00m

1 stop

ORD14:55Chicago O'Hare Intl

$1,808

Delta flights from Chicago to Australia

Our best Delta deals on Chicago to Australia flight tickets

Delta

15 Sept

MDW13:19Chicago Midway

26h 31m

2 stops

SYD06:50Sydney Kingsford Smith

2 Oct

SYD09:15Sydney Kingsford Smith

24h 18m

2 stops

MDW18:33Chicago Midway

$2,334

Delta

22 Aug

MDW13:25Chicago Midway

26h 25m

2 stops

SYD06:50Sydney Kingsford Smith

4 Sept

SYD09:15Sydney Kingsford Smith

24h 18m

2 stops

MDW18:33Chicago Midway

$2,335

Delta

1 Nov

MDW13:00Chicago Midway

27h 50m

2 stops

MEL09:50Melbourne

10 Nov

MEL12:00Melbourne

23h 37m

2 stops

MDW18:37Chicago Midway

$2,337

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Mon 24/8

06:05-11:50

3 stops38h 45m

Sydney Kingsford Smith

Tue 8/9

06:15-10:58

3 stops43h 43m

$1,550

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

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

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

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 3/8

15:40-07:05

1 stop24h 25m

Brisbane

Wed 14/10

10:00-09:43

2 stops38h 43m

$2,017

Fastest return journey

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 4/11

15:30-08:45

1 stop25h 15m

Brisbane

Wed 18/11

10:45-14:37

1 stop19h 52m

$2,018

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 $164. If you don’t want to visit Australia in November, then you should wait until May to fly from Chicago, when ticket prices are also cheap, with an average price of $206.

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 $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 for as low as $1,673 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 18% 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	21h 44m
Direct flights	None

The fastest flight from Chicago to Australia takes 21h 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 June 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 $2,131	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?

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.