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

Philippine Airlines, United Airlines, and Qantas Airways are the most popular carriers operating from Chicago to Australia

What airlines fly to Australia?

Qantas Airways, American Airlines and United Airlines are the top three most popular airlines that fly to Australia from Chicago according to our data. Qantas Airways is the first choice among our users, with 46% 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 February 2026.

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.

$462 Cheap Flights from Chicago to Australia in 2026

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Find the cheapest flights from Chicago to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:10 pm - 3:35 pm

ORD

MEL

29h 25m

2 stops

12:00 pm - 11:55 pm

MEL

ORD

28h 55m

1 stop

$938Qantas Airways

Sun, Feb 8 - Sat, Feb 21

6:00 am - 7:30 am

ORD

SYD

34h 30m

1 stop

1:15 pm - 5:50 am

SYD

ORD

31h 35m

2 stops

$942Multiple Airlines

Wed, Apr 15 - Mon, May 4

4:45 pm - 9:00 am

ORD

SYD

23h 15m

1 stop

7:05 am - 2:53 pm

SYD

ORD

24h 48m

2 stops

$945Qantas Airways

Mon, Feb 16 - Wed, Feb 25

7:45 pm - 7:30 am

ORD

SYD

44h 45m

1 stop

1:15 pm - 5:50 am

SYD

ORD

31h 35m

2 stops

$952Multiple Airlines

Tue, Apr 7 - Tue, Apr 14

3:35 pm - 8:45 am

ORD

BNE

25h 10m

1 stop

9:45 am - 2:41 pm

BNE

ORD

19h 56m

1 stop

$953Air Canada

Tue, Feb 24 - Wed, Mar 11

7:15 am - 8:45 am

ORD

BNE

33h 30m

2 stops

9:45 am - 2:41 pm

BNE

ORD

19h 56m

1 stop

$956Air Canada

Tue, Feb 24 - Wed, Mar 11

12:47 pm - 7:20 am

MDW

BNE

27h 33m

2 stops

10:05 am - 6:40 pm

BNE

MDW

23h 35m

2 stops

$1,170Delta

Wed, Mar 18 - Wed, Mar 25

6:40 pm - 8:20 am

MDW

BNE

45h 40m

2 stops

10:05 am - 6:40 pm

BNE

MDW

23h 35m

2 stops

$1,184Delta

Tue, Feb 24 - Wed, Mar 11

6:34 pm - 7:25 am

MDW

SYD

44h 51m

2 stops

9:40 am - 5:54 pm

SYD

MDW

24h 14m

2 stops

$1,448China Eastern

Sat, Mar 14 - Sat, Mar 21

4:35 pm - 1:40 pm

ORD

CBR

29h 05m

2 stops

6:35 am - 5:05 pm

CBR

ORD

26h 30m

2 stops

$1,682United Airlines

Wed, Mar 18 - Wed, Mar 25

Qantas Airways flights from Chicago to Australia

Our best Qantas Airways deals on Chicago to Australia flight tickets

Qantas Airways

Feb 8

ORD5:10 pmChicago O'Hare Intl

29h 25m

2 stops

MEL3:35 pmMelbourne

Feb 21

MEL12:00 pmMelbourne

28h 55m

1 stop

ORD11:55 pmChicago O'Hare Intl

$938

Qantas Airways

Feb 10

ORD10:01 amChicago O'Hare Intl

29h 59m

1 stop

SYD9:00 amSydney Kingsford Smith

Feb 25

SYD7:05 amSydney Kingsford Smith

24h 48m

2 stops

ORD2:53 pmChicago O'Hare Intl

$945

Qantas Airways

Feb 5

ORD6:40 pmChicago O'Hare Intl

27h 10m

2 stops

SYD2:50 pmSydney Kingsford Smith

May 16

SYD9:10 amSydney Kingsford Smith

22h 45m

1 stop

ORD4:55 pmChicago O'Hare Intl

$956

Air Canada flights from Chicago to Australia

Our best Air Canada deals on Chicago to Australia flight tickets

Air Canada

Feb 24

ORD3:35 pmChicago O'Hare Intl

25h 10m

1 stop

BNE8:45 amBrisbane

Mar 11

BNE9:45 amBrisbane

19h 56m

1 stop

ORD2:41 pmChicago O'Hare Intl

$953

Air Canada

Feb 24

ORD7:15 amChicago O'Hare Intl

33h 30m

2 stops

BNE8:45 amBrisbane

Mar 11

BNE9:45 amBrisbane

19h 56m

1 stop

ORD2:41 pmChicago O'Hare Intl

$956

Air Canada

Feb 23

ORD3:35 pmChicago O'Hare Intl

25h 10m

1 stop

BNE8:45 amBrisbane

Mar 9

BNE10:45 amBrisbane

24h 00m

2 stops

ORD7:45 pmChicago O'Hare Intl

$961

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sun 2/8

5:10 pm-3:35 pm

2 stops29h 25m

Melbourne

Sat 2/21

12:00 pm-11:55 pm

1 stop28h 55m

$938

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 4/15

6:00 am-7:30 am

1 stop34h 30m

Sydney Kingsford Smith

Mon 5/4

1:15 pm-5:50 am

2 stops31h 35m

$942

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 2/16

4:45 pm-9:00 am

1 stop23h 15m

Sydney Kingsford Smith

Wed 2/25

7:05 am-2:53 pm

2 stops24h 48m

$945

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 4/7

7:45 pm-7:30 am

1 stop44h 45m

Sydney Kingsford Smith

Tue 4/14

1:15 pm-5:50 am

2 stops31h 35m

$952

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/24

3:35 pm-8:45 am

1 stop25h 10m

Brisbane

Wed 3/11

9:45 am-2:41 pm

1 stop19h 56m

$953

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/24

7:15 am-8:45 am

2 stops33h 30m

Brisbane

Wed 3/11

9:45 am-2:41 pm

1 stop19h 56m

$956

ChicagoBrisbane

MDW - BNE

MDWBNE

Chicago Midway

Wed 3/18

12:47 pm-7:20 am

2 stops27h 33m

Brisbane

Wed 3/25

10:05 am-6:40 pm

2 stops23h 35m

$1,170

ChicagoBrisbane

MDW - BNE

MDWBNE

Chicago Midway

Tue 2/24

6:40 pm-8:20 am

2 stops45h 40m

Brisbane

Wed 3/11

10:05 am-6:40 pm

2 stops23h 35m

$1,184

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Sat 3/14

6:34 pm-7:25 am

2 stops44h 51m

Sydney Kingsford Smith

Sat 3/21

9:40 am-5:54 pm

2 stops24h 14m

$1,448

ChicagoCanberra

ORD - CBR

ORDCBR

Chicago O'Hare Intl

Wed 3/18

4:35 pm-1:40 pm

2 stops29h 05m

Canberra

Wed 3/25

6:35 am-5:05 pm

2 stops26h 30m

$1,682

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 June is, on average, the cheapest month to fly to Australia from Chicago, with most prices found around $865. If you aren’t able to travel during the month of June, then book flights to Australia from Chicago during May instead. Flights to Australia in May, while not as cheap as those in June, still average around $869.

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 $1,110 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 $911 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 23% 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 20m
Direct flights	None

The fastest flight from Chicago to Australia takes 21h 20m

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 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 February 2026.
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 $675	Free Cancellation	Rating 7.5 985 reviews	Search Qantas Airways flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,084 reviews	Search ANA flights
Fiji Airways	PriceFrom $795	Free Cancellation	Rating 8.0 223 reviews	Search Fiji Airways flights
American Airlines	PriceFrom $803	Free Cancellation	Rating 7.2 11,217 reviews	Search American Airlines flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 9,235 reviews	Search United Airlines flights
Air Canada	PriceFrom $872	Free Cancellation	Rating 7.1 10,684 reviews	Search Air Canada flights
Delta	PriceFrom $935	Free Cancellation	Rating 7.9 8,138 reviews	Search Delta flights
Air New Zealand	PriceFrom $1,217	Free Cancellation	Rating 8.0 578 reviews	Search Air New Zealand flights
Qatar Airways	PriceFrom $1,229	Free Cancellation	Rating 7.4 3,729 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,418	Free Cancellation	Rating 7.6 1,158 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.