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

What airlines fly to Australia?

American Airlines, Qantas Airways and United Airlines are the top three most popular airlines that fly to Australia from Chicago according to our data. American Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 10 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Chicago to Australia?

Prices for flights from Chicago to Australia were last updated today.

How many operators does momondo search for flights from Chicago to Australia?

The number of operators available for flights from Chicago to Australia is 10 as of August 2025.

How old do you have to be to fly from Chicago to Australia?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$473 Cheap Flights from Chicago to Australia in 2025

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Find the cheapest flights from Chicago to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

6:30 am - 11:45 amORD-SYD

38h 15m2 stops

1:15 pm - 10:43 pmSYD-ORD

24h 28m2 stops

$935

Find Deal

Fri, Sep 5 - Sun, Sep 14

6:30 am - 11:45 amORD-SYD

38h 15m2 stops

1:15 pm - 10:43 pmSYD-ORD

24h 28m2 stops

$956

Find Deal

Fri, Sep 5 - Sun, Sep 14

3:40 pm - 2:15 pmORD-MEL

29h 35m2 stops

7:00 am - 7:30 pmMEL-ORD

29h 30m3 stops

$1,322Air Canada

Find Deal

Mon, Feb 2 - Sun, Feb 15

3:40 pm - 3:35 pmORD-MEL

30h 55m2 stops

8:00 am - 9:59 pmMEL-ORD

30h 59m3 stops

$1,331Air Canada

Find Deal

Wed, Feb 4 - Wed, Feb 18

11:46 am - 5:00 amORD-MEL

24h 14m1 stop

12:00 pm - 5:28 pmMEL-ORD

22h 28m1 stop

$1,370Qantas Airways

Find Deal

Mon, Dec 1 - Mon, Dec 15

5:40 pm - 9:30 amORD-MEL

22h 50m1 stop

12:00 pm - 11:57 pmMEL-ORD

28h 57m1 stop

$1,407Qantas Airways

Find Deal

Mon, Feb 9 - Sun, Feb 22

12:45 pm - 7:30 amORD-BNE

26h 45m1 stop

11:40 am - 1:09 amBNE-ORD

29h 29m1 stop

$1,457United Airlines

Find Deal

Sun, Nov 16 - Tue, Dec 30

6:25 pm - 7:30 amORD-BNE

21h 05m1 stop

11:40 am - 4:59 pmBNE-ORD

21h 19m2 stops

$1,461United Airlines

Find Deal

Sun, Nov 16 - Mon, Dec 29

10:10 am - 5:25 amORD-BNE

28h 15m1 stop

7:25 pm - 5:57 amBNE-ORD

26h 32m1 stop

$1,488American Airlines

Find Deal

Wed, Oct 22 - Sat, Nov 22

12:00 pm - 5:25 amORD-BNE

26h 25m2 stops

7:25 pm - 12:29 amBNE-ORD

20h 04m1 stop

$1,489American Airlines

Find Deal

Thu, Oct 16 - Tue, Oct 28

Fiji Airways flights from Chicago to Australia

Our best Fiji Airways deals on Chicago to Australia flight tickets

Fiji Airways

Feb 14

ORD4:45 pmChicago O'Hare Intl

26h 45m

2 stops

SYD12:30 pmSydney Kingsford Smith

Mar 7

SYD2:10 pmSydney Kingsford Smith

22h 08m

2 stops

ORD7:18 pmChicago O'Hare Intl

$1,077

Find similar

Fiji Airways

Nov 18

ORD5:10 pmChicago O'Hare Intl

26h 20m

2 stops

SYD12:30 pmSydney Kingsford Smith

Feb 24

SYD6:00 amSydney Kingsford Smith

30h 18m

2 stops

ORD7:18 pmChicago O'Hare Intl

$1,102

Find similar

Fiji Airways

Feb 1

ORD5:40 pmChicago O'Hare Intl

25h 50m

2 stops

SYD12:30 pmSydney Kingsford Smith

Feb 14

SYD6:00 amSydney Kingsford Smith

30h 18m

2 stops

ORD7:18 pmChicago O'Hare Intl

$1,151

Find similar

ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

Oct 26

ORD5:35 pmChicago O'Hare Intl

34h 40m

1 stop

SYD8:15 pmSydney Kingsford Smith

Nov 24

SYD9:45 pmSydney Kingsford Smith

26h 35m

1 stop

ORD7:20 amChicago O'Hare Intl

$1,189

Find similar

ANA

Oct 26

ORD5:35 pmChicago O'Hare Intl

34h 40m

1 stop

SYD8:15 pmSydney Kingsford Smith

Nov 24

SYD9:45 pmSydney Kingsford Smith

33h 10m

2 stops

ORD1:55 pmChicago O'Hare Intl

$1,198

Find similar

ANA

Nov 9

ORD4:25 pmChicago O'Hare Intl

34h 50m

1 stop

SYD8:15 pmSydney Kingsford Smith

Nov 18

SYD12:25 pmSydney Kingsford Smith

35h 55m

1 stop

ORD7:20 amChicago O'Hare Intl

$1,216

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 9/5

6:30 am-11:45 am

2 stops38h 15m

Sydney Kingsford Smith

Sun 9/14

1:15 pm-10:43 pm

2 stops24h 28m

$935

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 9/5

6:30 am-11:45 am

2 stops38h 15m

Sydney Kingsford Smith

Sun 9/14

1:15 pm-10:43 pm

2 stops24h 28m

$956

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/2

3:40 pm-2:15 pm

2 stops29h 35m

Melbourne

Sun 2/15

7:00 am-7:30 pm

3 stops29h 30m

$1,322

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 2/4

3:40 pm-3:35 pm

2 stops30h 55m

Melbourne

Wed 2/18

8:00 am-9:59 pm

3 stops30h 59m

$1,331

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 12/1

11:46 am-5:00 am

1 stop24h 14m

Melbourne

Mon 12/15

12:00 pm-5:28 pm

1 stop22h 28m

$1,370

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/9

5:40 pm-9:30 am

1 stop22h 50m

Melbourne

Sun 2/22

12:00 pm-11:57 pm

1 stop28h 57m

$1,407

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 11/16

12:45 pm-7:30 am

1 stop26h 45m

Brisbane

Tue 12/30

11:40 am-1:09 am

1 stop29h 29m

$1,457

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 11/16

6:25 pm-7:30 am

1 stop21h 05m

Brisbane

Mon 12/29

11:40 am-4:59 pm

2 stops21h 19m

$1,461

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 10/22

10:10 am-5:25 am

1 stop28h 15m

Brisbane

Sat 11/22

7:25 pm-5:57 am

1 stop26h 32m

$1,488

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Thu 10/16

12:00 pm-5:25 am

2 stops26h 25m

Brisbane

Tue 10/28

7:25 pm-12:29 am

1 stop20h 04m

$1,489

Flights are sorted by cheapest round-trip 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?

The month of August is, on average, the cheapest month to fly to Australia from Chicago, with most prices found around $857. If you aren’t able to travel during the month of August, then book flights to Australia from Chicago during May instead. Flights to Australia in May, while not as cheap as those in August, still average around $867.

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

The cheapest day to depart from Chicago to Australia is on a Saturday. Travelers who choose to depart for Australia on a Saturday will often find tickets for as low as $935. On the other hand, Thursday is the most expensive day to depart from Chicago because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,415.

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

Flying to Australia from Chicago in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,185 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,417 on average. Flights to Australia from Chicago in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $1,095 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Chicago for as low as $866 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 25% 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

Best Price Found	$473
Fastest flight time	19h 50m
Direct flights	None
Airports in Australia	7 airports

The best one-way flight to Australia from Chicago in the past 72 hours is $473. The best round-trip flight deal from Chicago to Australia found on momondo in the last 72 hours is $935.

The fastest flight from Chicago to Australia takes 19h 50m

There are no direct flights from Chicago to Australia. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Sydney Kingsford Smith Airport, Chicago O'Hare Intl Airport - Perth Airport and Chicago O'Hare Intl Airport - Brisbane Airport.

There are 7 airports near Australia: Melbourne Avalon (AVV), Canberra (CBR), Melbourne (MEL), Brisbane (BNE), Perth (PER), Coolangatta Gold Coast (OOL), Sydney Kingsford Smith (SYD)

Search flight deals

When did momondo last update prices for flights from Chicago to Australia?
Prices for flights from Chicago to Australia were last updated today.
How many operators does momondo search for flights from Chicago to Australia?
The number of operators available for flights from Chicago to Australia is 10 as of August 2025.
How old do you have to be to fly from Chicago to Australia?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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 $647	Free Cancellation	Rating 7.5 896 reviews	Search Qantas Airways flights
ANA	PriceFrom $679	Free Cancellation	Rating 8.4 934 reviews	Search ANA flights
American Airlines	PriceFrom $679	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Fiji Airways	PriceFrom $772	Free Cancellation	Rating 8.0 204 reviews	Search Fiji Airways flights
Delta	PriceFrom $853	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Air Canada	PriceFrom $952	Free Cancellation	Rating 7.1 9,992 reviews	Search Air Canada flights
United Airlines	PriceFrom $1,164	Free Cancellation	Rating 7.4 8,925 reviews	Search United Airlines flights
Qatar Airways	PriceFrom $1,229	Free Cancellation	Rating 7.4 3,609 reviews	Search Qatar Airways flights
Air New Zealand	PriceFrom $1,275	Free Cancellation	Rating 8.0 504 reviews	Search Air New Zealand flights
Cathay Pacific	PriceFrom $1,470	Free Cancellation	Rating 7.6 969 reviews	Search Cathay Pacific flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Australia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Australia from Chicago.

Can I find flights from Chicago to Australia with flexible booking policies on momondo?

Flights from Chicago to Australia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to Australia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to Australia.

I’m not ready to book a flight from Chicago to Australia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Australia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.