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

Fiji Airways is the most popular carrier 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 November 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.

$815 Cheap Flights from Chicago to Australia in 2025/26

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.

09:28 - 09:30ORD-MEL

31h 02m1 stop

18:30 - 16:39MEL-ORD

39h 09m2 stops

$1,539Qantas Airways

Find Deal

Tue, 24 Feb - Sun, 1 Mar

08:20 - 09:00ORD-SYD

31h 40m2 stops

11:20 - 06:05SYD-ORD

35h 45m1 stop

$1,579Multiple Airlines

Find Deal

Tue, 2 Dec - Tue, 9 Dec

18:40 - 17:15ORD-MEL

29h 35m2 stops

12:00 - 17:41MEL-ORD

22h 41m1 stop

$1,603Qantas Airways

Find Deal

Mon, 26 Jan - Mon, 16 Feb

15:40 - 09:35ORD-SYD

24h 55m1 stop

11:20 - 14:41SYD-ORD

20h 21m1 stop

$1,612Air Canada

Find Deal

Mon, 9 Feb - Tue, 17 Feb

08:45 - 09:35ORD-SYD

31h 50m2 stops

11:20 - 08:00SYD-ORD

37h 40m3 stops

$1,623Air Canada

Find Deal

Mon, 9 Feb - Tue, 17 Feb

20:00 - 19:15ORD-SYD

32h 15m2 stops

20:55 - 16:34SYD-ORD

34h 39m2 stops

$1,769ANA

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Sat, 25 Apr - Sun, 3 May

17:37 - 22:05ORD-SYD

35h 28m2 stops

14:00 - 21:35SYD-ORD

24h 35m2 stops

$1,780Fiji Airways

Find Deal

Sat, 7 Feb - Sat, 21 Feb

16:10 - 07:30ORD-BNE

23h 20m1 stop

11:40 - 14:53BNE-ORD

19h 13m1 stop

$1,918United Airlines

Find Deal

Sun, 7 Dec - Mon, 12 Jan

09:10 - 07:30ORD-BNE

30h 20m1 stop

11:40 - 14:48BNE-ORD

19h 08m1 stop

$1,935United Airlines

Find Deal

Sun, 23 Nov - Mon, 15 Dec

18:45 - 11:35ORD-CNS

25h 50m2 stops

12:35 - 23:59CNS-ORD

26h 24m2 stops

$2,355Fiji Airways

Find Deal

Tue, 17 Mar - Sat, 28 Mar

Fiji Airways flights from Chicago to Australia

Our best Fiji Airways deals on Chicago to Australia flight tickets

Fiji Airways

7 Feb

ORD17:37Chicago O'Hare Intl

35h 28m

2 stops

SYD22:05Sydney Kingsford Smith

21 Feb

SYD14:00Sydney Kingsford Smith

24h 35m

2 stops

ORD21:35Chicago O'Hare Intl

$1,780

Find similar

Fiji Airways

17 Mar

ORD18:45Chicago O'Hare Intl

25h 50m

2 stops

CNS11:35Cairns

28 Mar

CNS12:35Cairns

26h 24m

2 stops

ORD23:59Chicago O'Hare Intl

$2,355

Find similar

Delta flights from Chicago to Australia

Our best Delta deals on Chicago to Australia flight tickets

Delta

26 Apr

MDW14:00Chicago Midway

25h 35m

2 stops

SYD06:35Sydney Kingsford Smith

4 May

SYD09:25Sydney Kingsford Smith

27h 20m

2 stops

MDW21:45Chicago Midway

$1,949

Find similar

Delta

25 Nov

MDW12:47Chicago Midway

26h 43m

2 stops

SYD08:30Sydney Kingsford Smith

10 Dec

SYD10:40Sydney Kingsford Smith

30h 07m

2 stops

MDW23:47Chicago Midway

$1,951

Find similar

Delta

8 Nov

ORD17:15Chicago O'Hare Intl

46h 15m

2 stops

SYD08:30Sydney Kingsford Smith

19 Nov

SYD10:40Sydney Kingsford Smith

23h 06m

2 stops

ORD16:46Chicago O'Hare Intl

$1,975

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 24/2

09:28-09:30

1 stop31h 02m

Melbourne

Sun 1/3

18:30-16:39

2 stops39h 09m

$1,539

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 2/12

08:20-09:00

2 stops31h 40m

Sydney Kingsford Smith

Tue 9/12

11:20-06:05

1 stop35h 45m

$1,579

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 26/1

18:40-17:15

2 stops29h 35m

Melbourne

Mon 16/2

12:00-17:41

1 stop22h 41m

$1,603

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 9/2

15:40-09:35

1 stop24h 55m

Sydney Kingsford Smith

Tue 17/2

11:20-14:41

1 stop20h 21m

$1,612

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 9/2

08:45-09:35

2 stops31h 50m

Sydney Kingsford Smith

Tue 17/2

11:20-08:00

3 stops37h 40m

$1,623

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 25/4

20:00-19:15

2 stops32h 15m

Sydney Kingsford Smith

Sun 3/5

20:55-16:34

2 stops34h 39m

$1,769

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 7/2

17:37-22:05

2 stops35h 28m

Sydney Kingsford Smith

Sat 21/2

14:00-21:35

2 stops24h 35m

$1,780

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 7/12

16:10-07:30

1 stop23h 20m

Brisbane

Mon 12/1

11:40-14:53

1 stop19h 13m

$1,918

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 23/11

09:10-07:30

1 stop30h 20m

Brisbane

Mon 15/12

11:40-14:48

1 stop19h 08m

$1,935

ChicagoCairns

ORD - CNS

ORDCNS

Chicago O'Hare Intl

Tue 17/3

18:45-11:35

2 stops25h 50m

Cairns

Sat 28/3

12:35-23:59

2 stops26h 24m

$2,355

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 $1,308. If you don’t want to visit Australia in August, then you should wait until September to fly from Chicago, when ticket prices are also cheap, with an average price of $1,316.

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 $1,415. 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 $3,780. 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 $1,813. 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 $2,492. 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 $1,646 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 $1,320 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 22% 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 November 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
American Airlines	PriceFrom $1,317	Free cancellation	Rating 7.2 11,040 reviews		Search American Airlines flights
Qantas Airways	PriceFrom $1,334	Free cancellation	Rating 7.5 927 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.