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

Delta is the most popular carrier operating from Chicago to Australia

What airlines fly to Australia?

Qantas Airways, United Airlines and Air Canada 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 45% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 9 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 9 as of May 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.

$596 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.

9:57 pm - 11:50 am

ORD

SYD

46h 53m

3 stops

6:15 am - 5:28 am

SYD

ORD

38h 13m

3 stops

$1,220Multiple Airlines

Wed, Jul 22 - Tue, Aug 11

7:20 am - 11:50 am

ORD

SYD

37h 30m

3 stops

1:15 pm - 6:19 am

SYD

ORD

32h 04m

2 stops

$1,291Multiple Airlines

Sat, Jun 27 - Sat, Jul 4

9:13 pm - 7:30 am

ORD

SYD

43h 17m

1 stop

1:15 pm - 6:19 am

SYD

ORD

32h 04m

2 stops

$1,298Multiple Airlines

Tue, Aug 4 - Tue, Aug 25

9:13 pm - 6:45 am

ORD

MEL

42h 32m

1 stop

1:25 pm - 6:19 am

MEL

ORD

31h 54m

2 stops

$1,309Multiple Airlines

Fri, Jul 31 - Tue, Aug 25

9:13 pm - 7:30 am

ORD

SYD

43h 17m

1 stop

1:15 pm - 6:17 am

SYD

ORD

32h 02m

2 stops

$1,310Multiple Airlines

Thu, Jul 30 - Fri, Aug 7

3:40 pm - 7:20 am

ORD

SYD

24h 40m

1 stop

9:20 am - 2:41 pm

SYD

ORD

20h 21m

1 stop

$1,337Air Canada

Mon, Jun 22 - Wed, Jul 8

8:40 am - 7:05 am

ORD

BNE

31h 25m

2 stops

10:15 am - 9:38 am

BNE

ORD

38h 23m

2 stops

$1,394Air Canada

Tue, Jun 2 - Tue, Jun 16

8:46 am - 10:55 am

ORD

ADL

35h 39m

2 stops

6:00 am - 9:30 pm

ADL

ORD

30h 00m

2 stops

$1,616Air New Zealand

Mon, Aug 10 - Wed, Aug 19

5:10 pm - 12:10 pm

ORD

CBR

28h 00m

2 stops

6:10 am - 2:18 pm

CBR

ORD

23h 08m

2 stops

$1,840American Airlines

Sun, Jun 7 - Sun, Jun 14

4:30 pm - 1:15 pm

ORD

CBR

29h 45m

2 stops

7:15 am - 6:35 pm

CBR

ORD

26h 20m

2 stops

$1,871United Airlines

Sun, Jun 28 - Sun, Jul 5

ANA flights from Chicago to Australia

Our best ANA deals on Chicago to Australia flight tickets

ANA

Aug 5

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Aug 30

SYD11:45 amSydney Kingsford Smith

47h 48m

2 stops

ORD8:33 pmChicago O'Hare Intl

$1,323

ANA

Aug 5

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Aug 30

SYD11:45 amSydney Kingsford Smith

32h 00m

2 stops

ORD4:45 amChicago O'Hare Intl

$1,362

ANA

Aug 5

ORD5:45 pmChicago O'Hare Intl

34h 25m

1 stop

SYD7:10 pmSydney Kingsford Smith

Aug 30

SYD11:45 amSydney Kingsford Smith

32h 00m

2 stops

ORD4:45 amChicago O'Hare Intl

$1,364

Air New Zealand flights from Chicago to Australia

Our best Air New Zealand deals on Chicago to Australia flight tickets

Air New Zealand

May 30

ORD5:35 pmChicago O'Hare Intl

46h 45m

1 stop

SYD7:20 amSydney Kingsford Smith

Jun 8

SYD9:20 amSydney Kingsford Smith

37h 30m

2 stops

ORD7:50 amChicago O'Hare Intl

$1,431

Air New Zealand

Aug 10

ORD8:46 amChicago O'Hare Intl

35h 39m

2 stops

ADL10:55 amAdelaide

Aug 19

ADL6:00 amAdelaide

30h 00m

2 stops

ORD9:30 pmChicago O'Hare Intl

$1,616

Air New Zealand

Jul 13

ORD6:10 pmChicago O'Hare Intl

27h 10m

2 stops

BNE12:20 pmBrisbane

Jul 26

BNE10:30 amBrisbane

29h 29m

1 stop

ORD12:59 amChicago O'Hare Intl

$1,639

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 7/22

9:57 pm-11:50 am

3 stops46h 53m

Sydney Kingsford Smith

Tue 8/11

6:15 am-5:28 am

3 stops38h 13m

$1,220

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 6/27

7:20 am-11:50 am

3 stops37h 30m

Sydney Kingsford Smith

Sat 7/4

1:15 pm-6:19 am

2 stops32h 04m

$1,291

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 8/4

9:13 pm-7:30 am

1 stop43h 17m

Sydney Kingsford Smith

Tue 8/25

1:15 pm-6:19 am

2 stops32h 04m

$1,298

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Fri 7/31

9:13 pm-6:45 am

1 stop42h 32m

Melbourne

Tue 8/25

1:25 pm-6:19 am

2 stops31h 54m

$1,309

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 7/30

9:13 pm-7:30 am

1 stop43h 17m

Sydney Kingsford Smith

Fri 8/7

1:15 pm-6:17 am

2 stops32h 02m

$1,310

Quickest round-trip

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 6/22

3:40 pm-7:20 am

1 stop24h 40m

Sydney Kingsford Smith

Wed 7/8

9:20 am-2:41 pm

1 stop20h 21m

$1,337

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 6/2

8:40 am-7:05 am

2 stops31h 25m

Brisbane

Tue 6/16

10:15 am-9:38 am

2 stops38h 23m

$1,394

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/10

8:46 am-10:55 am

2 stops35h 39m

Adelaide

Wed 8/19

6:00 am-9:30 pm

2 stops30h 00m

$1,616

ChicagoCanberra

ORD - CBR

ORDCBR

Chicago O'Hare Intl

Sun 6/7

5:10 pm-12:10 pm

2 stops28h 00m

Canberra

Sun 6/14

6:10 am-2:18 pm

2 stops23h 08m

$1,840

ChicagoCanberra

ORD - CBR

ORDCBR

Chicago O'Hare Intl

Sun 6/28

4:30 pm-1:15 pm

2 stops29h 45m

Canberra

Sun 7/5

7:15 am-6:35 pm

2 stops26h 20m

$1,871

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 November is, on average, the cheapest month to fly to Australia from Chicago, with most prices found around $113. If you aren’t able to travel during the month of November, then book flights to Australia from Chicago during August instead. Flights to Australia in August, while not as cheap as those in November, still average around $138.

How far in advance should I book a flight from Chicago 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 $1,388 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 $1,126 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 14% 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	20h 17m
Direct flights	None

The fastest flight from Chicago to Australia takes 20h 17m

There are no direct flights from Chicago to Australia. There are no popular flight routes from Chicago to Australia.

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Frequently asked questions about flying from Chicago to Australia

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 9 as of May 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
American Airlines	PriceFrom $198	Free Cancellation	Rating 7.1 11,662 reviews	Search American Airlines flights
Air Canada	PriceFrom $712	Free Cancellation	Rating 7.1 11,043 reviews	Search Air Canada flights
Fiji Airways	PriceFrom $716	Free Cancellation	Rating 8.1 241 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $836	Free Cancellation	Rating 7.5 1,037 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 9,724 reviews	Search United Airlines flights
ANA	PriceFrom $1,193	Free Cancellation	Rating 8.3 1,210 reviews	Search ANA flights
Air New Zealand	PriceFrom $1,217	Free Cancellation	Rating 8.0 642 reviews	Search Air New Zealand flights
Qatar Airways	PriceFrom $1,263	Free Cancellation	Rating 7.4 3,727 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,418	Free Cancellation	Rating 7.6 1,331 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.