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 September 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.

$764 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

06:30 - 12:45ORD-MEL

38h 15m2 stops

14:15 - 23:00MEL-ORD

25h 45m2 stops

$1,568Multiple Airlines

Find Deal

Fri, 31 Oct - Fri, 7 Nov

14:35 - 01:35ORD-PER

45h 00m2 stops

20:50 - 14:25PER-ORD

54h 35m2 stops

$1,622Multiple Airlines

Find Deal

Tue, 6 Jan - Wed, 20 May

16:45 - 12:30ORD-SYD

26h 45m2 stops

14:10 - 19:18SYD-ORD

22h 08m2 stops

$1,652Fiji Airways

Find Deal

Sat, 28 Feb - Sat, 7 Mar

14:00 - 19:45ORD-SYD

36h 45m2 stops

21:40 - 05:04SYD-ORD

24h 24m2 stops

$1,701Hawaiian Airlines

Find Deal

Tue, 24 Feb - Tue, 3 Mar

14:00 - 19:45ORD-SYD

36h 45m2 stops

21:40 - 13:04SYD-ORD

31h 24m2 stops

$1,703Hawaiian Airlines

Find Deal

Tue, 24 Feb - Tue, 10 Mar

16:45 - 12:30ORD-SYD

26h 45m2 stops

14:10 - 19:18SYD-ORD

22h 08m2 stops

$1,749Fiji Airways

Find Deal

Sat, 7 Feb - Sat, 14 Feb

18:03 - 09:30ORD-MEL

22h 27m1 stop

12:00 - 15:55MEL-ORD

20h 55m1 stop

$2,009Qantas Airways

Find Deal

Tue, 4 Nov - Tue, 18 Nov

18:23 - 09:30ORD-MEL

22h 07m1 stop

12:00 - 16:54MEL-ORD

21h 54m1 stop

$2,057Qantas Airways

Find Deal

Mon, 1 Dec - Sun, 14 Dec

21:12 - 13:55ORD-ADL

49h 13m3 stops

06:10 - 16:44ADL-ORD

27h 04m2 stops

$2,920Air Canada

Find Deal

Mon, 20 Oct - Mon, 10 Nov

21:12 - 13:55ORD-ADL

49h 13m3 stops

06:00 - 19:30ADL-ORD

30h 00m3 stops

$2,926Air Canada

Find Deal

Mon, 20 Oct - Mon, 10 Nov

ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

3 Mar

ORD16:25Chicago O'Hare Intl

34h 50m

1 stop

SYD20:15Sydney Kingsford Smith

18 Mar

SYD12:25Sydney Kingsford Smith

37h 12m

2 stops

ORD09:37Chicago O'Hare Intl

$1,715

Find similar

ANA

3 Mar

ORD07:10Chicago O'Hare Intl

44h 05m

2 stops

SYD20:15Sydney Kingsford Smith

18 Mar

SYD12:25Sydney Kingsford Smith

37h 12m

2 stops

ORD09:37Chicago O'Hare Intl

$1,721

Find similar

ANA

16 Feb

ORD16:25Chicago O'Hare Intl

34h 50m

1 stop

SYD20:15Sydney Kingsford Smith

1 Mar

SYD12:25Sydney Kingsford Smith

36h 00m

2 stops

ORD07:25Chicago O'Hare Intl

$1,737

Find similar

Fiji Airways flights from Chicago to Australia

Our best Fiji Airways deals on Chicago to Australia flight tickets

Fiji Airways

28 Feb

ORD16:45Chicago O'Hare Intl

26h 45m

2 stops

SYD12:30Sydney Kingsford Smith

7 Mar

SYD14:10Sydney Kingsford Smith

22h 08m

2 stops

ORD19:18Chicago O'Hare Intl

$1,652

Find similar

Fiji Airways

7 Feb

ORD16:45Chicago O'Hare Intl

26h 45m

2 stops

SYD12:30Sydney Kingsford Smith

14 Feb

SYD14:10Sydney Kingsford Smith

22h 08m

2 stops

ORD19:18Chicago O'Hare Intl

$1,749

Find similar

Fiji Airways

7 Feb

ORD16:45Chicago O'Hare Intl

26h 45m

2 stops

SYD12:30Sydney Kingsford Smith

28 Feb

SYD14:10Sydney Kingsford Smith

22h 08m

2 stops

ORD19:18Chicago O'Hare Intl

$1,761

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Fri 31/10

06:30-12:45

2 stops38h 15m

Melbourne

Fri 7/11

14:15-23:00

2 stops25h 45m

$1,568

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 6/1

14:35-01:35

2 stops45h 00m

Perth

Wed 20/5

20:50-14:25

2 stops54h 35m

$1,622

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 28/2

16:45-12:30

2 stops26h 45m

Sydney Kingsford Smith

Sat 7/3

14:10-19:18

2 stops22h 08m

$1,652

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 24/2

14:00-19:45

2 stops36h 45m

Sydney Kingsford Smith

Tue 3/3

21:40-05:04

2 stops24h 24m

$1,701

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 24/2

14:00-19:45

2 stops36h 45m

Sydney Kingsford Smith

Tue 10/3

21:40-13:04

2 stops31h 24m

$1,703

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 7/2

16:45-12:30

2 stops26h 45m

Sydney Kingsford Smith

Sat 14/2

14:10-19:18

2 stops22h 08m

$1,749

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 4/11

18:03-09:30

1 stop22h 27m

Melbourne

Tue 18/11

12:00-15:55

1 stop20h 55m

$2,009

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 1/12

18:23-09:30

1 stop22h 07m

Melbourne

Sun 14/12

12:00-16:54

1 stop21h 54m

$2,057

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 20/10

21:12-13:55

3 stops49h 13m

Adelaide

Mon 10/11

06:10-16:44

2 stops27h 04m

$2,920

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 20/10

21:12-13:55

3 stops49h 13m

Adelaide

Mon 10/11

06:00-19:30

3 stops30h 00m

$2,926

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 $1,276. 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 $1,300.

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 $1,380. 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 $3,686. 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 $1,768. 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 $2,430. 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 $1,656 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 $1,288 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 September 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 $1,246	Free cancellation	Rating 7.1 10,000 reviews		Search Air Canada flights
Qantas Airways	PriceFrom $1,301	Free cancellation	Rating 7.5 907 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.