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

Fiji Airways, ANA, and Philippine 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 August 2025, there are 2 operators 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.

$713 Cheap Flights from Chicago to Australia in 2025

1 adult

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Find the cheapest flights from Chicago to Australia

Round-trip

One-way

Last minute

Cheap return flights

06:30 - 11:45ORD-SYD

38h 15m2 stops

13:15 - 22:43SYD-ORD

24h 28m2 stops

$1,442

Find Deal

Fri, 5 Sep - Sun, 14 Sep

06:30 - 11:45ORD-SYD

38h 15m2 stops

13:15 - 22:43SYD-ORD

24h 28m2 stops

$1,448

Find Deal

Fri, 5 Sep - Sun, 14 Sep

16:45 - 12:30ORD-SYD

26h 45m2 stops

14:10 - 19:18SYD-ORD

22h 08m2 stops

$1,641Fiji Airways

Find Deal

Sat, 14 Feb - Sat, 7 Mar

16:45 - 10:10ORD-BNE

25h 25m2 stops

11:25 - 19:18BNE-ORD

23h 53m2 stops

$1,725Fiji Airways

Find Deal

Sat, 14 Feb - Sat, 7 Mar

16:25 - 20:15ORD-SYD

34h 50m1 stop

21:45 - 07:20SYD-ORD

26h 35m1 stop

$1,779ANA

Find Deal

Tue, 4 Nov - Tue, 11 Nov

18:00 - 20:15ORD-SYD

33h 15m2 stops

21:45 - 07:20SYD-ORD

26h 35m1 stop

$1,785ANA

Find Deal

Tue, 4 Nov - Tue, 11 Nov

14:00 - 15:35ORD-MEL

32h 35m3 stops

07:10 - 14:41MEL-ORD

24h 31m2 stops

$2,035Air Canada

Find Deal

Mon, 16 Feb - Sun, 1 Mar

15:40 - 15:15ORD-MEL

30h 35m2 stops

08:00 - 19:30MEL-ORD

28h 30m3 stops

$2,041Air Canada

Find Deal

Mon, 2 Feb - Sun, 15 Feb

09:07 - 09:30ORD-MEL

31h 23m1 stop

12:00 - 23:59MEL-ORD

28h 59m1 stop

$2,089Qantas Airways

Find Deal

Mon, 24 Nov - Sun, 7 Dec

14:14 - 09:30ORD-MEL

26h 16m1 stop

12:00 - 15:59MEL-ORD

20h 59m1 stop

$2,115Qantas Airways

Find Deal

Wed, 21 Jan - Mon, 2 Feb

ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

4 Nov

ORD16:25Chicago O'Hare Intl

34h 50m

1 stop

SYD20:15Sydney Kingsford Smith

11 Nov

SYD21:45Sydney Kingsford Smith

26h 35m

1 stop

ORD07:20Chicago O'Hare Intl

$1,779

Find similar

ANA

4 Nov

ORD18:00Chicago O'Hare Intl

33h 15m

2 stops

SYD20:15Sydney Kingsford Smith

11 Nov

SYD21:45Sydney Kingsford Smith

26h 35m

1 stop

ORD07:20Chicago O'Hare Intl

$1,785

Find similar

ANA

9 Feb

ORD16:25Chicago O'Hare Intl

34h 50m

1 stop

SYD20:15Sydney Kingsford Smith

22 Feb

SYD12:25Sydney Kingsford Smith

33h 38m

2 stops

ORD05:03Chicago O'Hare Intl

$1,793

Find similar

Cathay Pacific flights from Chicago to Australia

Our best Cathay Pacific deals on Chicago to Australia flight tickets

Cathay Pacific

27 Oct

ORD15:40Chicago O'Hare Intl

28h 50m

1 stop

MEL12:30Melbourne

8 Nov

MEL00:45Melbourne

29h 15m

1 stop

ORD13:00Chicago O'Hare Intl

$2,109

Find similar

Cathay Pacific

25 Aug

ORD16:00Chicago O'Hare Intl

28h 15m

1 stop

MEL11:15Melbourne

8 Sept

MEL23:45Melbourne

29h 40m

1 stop

ORD14:25Chicago O'Hare Intl

$2,122

Find similar

Cathay Pacific

2 Sept

ORD16:00Chicago O'Hare Intl

27h 50m

1 stop

SYD10:50Sydney Kingsford Smith

14 Oct

SYD08:40Sydney Kingsford Smith

45h 45m

1 stop

ORD14:25Chicago O'Hare Intl

$2,132

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 5/9

06:30-11:45

2 stops38h 15m

Sydney Kingsford Smith

Sun 14/9

13:15-22:43

2 stops24h 28m

$1,442

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 5/9

06:30-11:45

2 stops38h 15m

Sydney Kingsford Smith

Sun 14/9

13:15-22:43

2 stops24h 28m

$1,448

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 14/2

16:45-12:30

2 stops26h 45m

Sydney Kingsford Smith

Sat 7/3

14:10-19:18

2 stops22h 08m

$1,641

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 14/2

16:45-10:10

2 stops25h 25m

Brisbane

Sat 7/3

11:25-19:18

2 stops23h 53m

$1,725

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 4/11

16:25-20:15

1 stop34h 50m

Sydney Kingsford Smith

Tue 11/11

21:45-07:20

1 stop26h 35m

$1,779

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 4/11

18:00-20:15

2 stops33h 15m

Sydney Kingsford Smith

Tue 11/11

21:45-07:20

1 stop26h 35m

$1,785

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 16/2

14:00-15:35

3 stops32h 35m

Melbourne

Sun 1/3

07:10-14:41

2 stops24h 31m

$2,035

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/2

15:40-15:15

2 stops30h 35m

Melbourne

Sun 15/2

08:00-19:30

3 stops28h 30m

$2,041

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 24/11

09:07-09:30

1 stop31h 23m

Melbourne

Sun 7/12

12:00-23:59

1 stop28h 59m

$2,089

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 21/1

14:14-09:30

1 stop26h 16m

Melbourne

Mon 2/2

12:00-15:59

1 stop20h 59m

$2,115

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, August 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 $1,323. If you don’t want to visit Australia in August, then you should wait until May to fly from Chicago, when ticket prices are also cheap, with an average price of $1,339.

What is the cheapest day to depart on your flight to Australia?

On average, the least expensive day to fly to Australia from Chicago is on a Friday. momondo users have found tickets for Friday departures for as low as $1,421. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Chicago to Australia on a Thursday will generally be more expensive and average around $3,797. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Australia?

According to our data, the cheapest time of day to fly to Australia is in the afternoon. momondo users have found flights departing from Chicago to Australia in the afternoon for as low as $1,821. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the evening, with an average ticket price of $2,503. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,691 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 $1,337 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 15% 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

Direct flights	None

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 August 2025, there are 2 operators 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
Air Canada	PriceFrom $1,284	Free cancellation	Rating 7.1 10,000 reviews		Search Air Canada flights
Qantas Airways	PriceFrom $1,318	Free cancellation	Rating 7.5 896 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.