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

ANA and Qantas Airways 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 50% 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 November 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.

$543 Cheap Flights from Chicago to Australia in 2025/26

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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.

6:17 pm - 9:00 amORD-SYD

21h 43m1 stop

7:05 am - 4:39 pmSYD-ORD

26h 34m2 stops

$883Qantas Airways

Find Deal

Thu, Dec 4 - Wed, Mar 4

7:39 pm - 5:15 pmORD-MEL

28h 36m2 stops

12:00 pm - 5:41 pmMEL-ORD

22h 41m1 stop

$942Qantas Airways

Find Deal

Wed, Feb 25 - Fri, Mar 6

3:40 pm - 4:20 pmORD-ADL

32h 10m2 stops

6:10 am - 7:53 pmADL-ORD

29h 13m2 stops

$1,157Air Canada

Find Deal

Thu, Feb 26 - Thu, Mar 26

2:00 pm - 4:10 pmORD-ADL

33h 40m3 stops

6:10 am - 7:53 pmADL-ORD

29h 13m2 stops

$1,164Air Canada

Find Deal

Thu, Feb 26 - Thu, Mar 26

10:46 am - 8:20 amMDW-BNE

29h 34m2 stops

10:40 am - 10:26 pmBNE-MDW

27h 46m2 stops

$1,461Delta

Find Deal

Mon, Jan 19 - Sun, Feb 8

9:50 am - 8:00 amMDW-MEL

29h 10m2 stops

10:10 am - 10:09 pmMEL-MDW

28h 59m2 stops

$1,465Delta

Find Deal

Wed, Dec 31 - Wed, Jan 14

12:46 pm - 9:30 amORD-ADL

28h 14m1 stop

6:10 am - 6:51 pmADL-ORD

28h 11m2 stops

$1,558United Airlines

Find Deal

Thu, Feb 26 - Thu, Mar 26

10:35 am - 10:55 amORD-ADL

31h 50m2 stops

2:20 pm - 2:27 pmADL-ORD

39h 37m2 stops

$1,611Air New Zealand

Find Deal

Wed, Feb 25 - Tue, Mar 31

8:20 pm - 9:30 amORD-ADL

44h 40m1 stop

7:40 am - 6:48 pmADL-ORD

26h 38m2 stops

$1,646United Airlines

Find Deal

Wed, Feb 25 - Tue, Mar 31

2:30 pm - 10:55 amORD-ADL

27h 55m2 stops

6:35 am - 6:50 pmADL-ORD

28h 45m2 stops

$1,751Air New Zealand

Find Deal

Tue, Nov 25 - Wed, Dec 17

Qantas Airways flights from Chicago to Australia

Our best Qantas Airways deals on Chicago to Australia flight tickets

Qantas Airways

Dec 4

ORD6:17 pmChicago O'Hare Intl

21h 43m

1 stop

SYD9:00 amSydney Kingsford Smith

Mar 4

SYD7:05 amSydney Kingsford Smith

26h 34m

2 stops

ORD4:39 pmChicago O'Hare Intl

$883

Find similar

Qantas Airways

Feb 25

ORD7:39 pmChicago O'Hare Intl

28h 36m

2 stops

MEL5:15 pmMelbourne

Mar 6

MEL12:00 pmMelbourne

22h 41m

1 stop

ORD5:41 pmChicago O'Hare Intl

$942

Find similar

Qantas Airways

Feb 11

ORD9:02 amChicago O'Hare Intl

30h 58m

1 stop

SYD9:00 amSydney Kingsford Smith

Feb 26

SYD7:05 amSydney Kingsford Smith

27h 36m

2 stops

ORD5:41 pmChicago O'Hare Intl

$950

Find similar

Air Canada flights from Chicago to Australia

Our best Air Canada deals on Chicago to Australia flight tickets

Air Canada

Feb 26

ORD3:40 pmChicago O'Hare Intl

32h 10m

2 stops

ADL4:20 pmAdelaide

Mar 26

ADL6:10 amAdelaide

29h 13m

2 stops

ORD7:53 pmChicago O'Hare Intl

$1,157

Find similar

Air Canada

Feb 26

ORD2:00 pmChicago O'Hare Intl

33h 40m

3 stops

ADL4:10 pmAdelaide

Mar 26

ADL6:10 amAdelaide

29h 13m

2 stops

ORD7:53 pmChicago O'Hare Intl

$1,164

Find similar

Air Canada

Mar 25

ORD3:40 pmChicago O'Hare Intl

28h 55m

2 stops

MEL12:35 pmMelbourne

Apr 6

MEL9:40 pmMelbourne

32h 03m

2 stops

ORD2:43 pmChicago O'Hare Intl

$1,233

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 12/4

6:17 pm-9:00 am

1 stop21h 43m

Sydney Kingsford Smith

Wed 3/4

7:05 am-4:39 pm

2 stops26h 34m

$883

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 2/25

7:39 pm-5:15 pm

2 stops28h 36m

Melbourne

Fri 3/6

12:00 pm-5:41 pm

1 stop22h 41m

$942

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 2/26

3:40 pm-4:20 pm

2 stops32h 10m

Adelaide

Thu 3/26

6:10 am-7:53 pm

2 stops29h 13m

$1,157

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 2/26

2:00 pm-4:10 pm

3 stops33h 40m

Adelaide

Thu 3/26

6:10 am-7:53 pm

2 stops29h 13m

$1,164

ChicagoBrisbane

MDW - BNE

MDWBNE

Chicago Midway

Mon 1/19

10:46 am-8:20 am

2 stops29h 34m

Brisbane

Sun 2/8

10:40 am-10:26 pm

2 stops27h 46m

$1,461

ChicagoMelbourne

MDW - MEL

MDWMEL

Chicago Midway

Wed 12/31

9:50 am-8:00 am

2 stops29h 10m

Melbourne

Wed 1/14

10:10 am-10:09 pm

2 stops28h 59m

$1,465

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 2/26

12:46 pm-9:30 am

1 stop28h 14m

Adelaide

Thu 3/26

6:10 am-6:51 pm

2 stops28h 11m

$1,558

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 2/25

10:35 am-10:55 am

2 stops31h 50m

Adelaide

Tue 3/31

2:20 pm-2:27 pm

2 stops39h 37m

$1,611

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 2/25

8:20 pm-9:30 am

1 stop44h 40m

Adelaide

Tue 3/31

7:40 am-6:48 pm

2 stops26h 38m

$1,646

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 11/25

2:30 pm-10:55 am

2 stops27h 55m

Adelaide

Wed 12/17

6:35 am-6:50 pm

2 stops28h 45m

$1,751

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 $851. 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 $864.

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 $1,051 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 $848 on momondo.

Can stopping save me money on Chicago to Australia flights?

You could potentially save up to 20% 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 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 November 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 $673	Free Cancellation	Rating 7.5 933 reviews	Search Qantas Airways flights
ANA	PriceFrom $679	Free Cancellation	Rating 8.4 1,003 reviews	Search ANA flights
American Airlines	PriceFrom $679	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights
Fiji Airways	PriceFrom $772	Free Cancellation	Rating 8.1 209 reviews	Search Fiji Airways flights
Delta	PriceFrom $846	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 9,015 reviews	Search United Airlines flights
Air Canada	PriceFrom $872	Free Cancellation	Rating 7.1 10,444 reviews	Search Air Canada flights
Qatar Airways	PriceFrom $1,229	Free Cancellation	Rating 7.4 3,661 reviews	Search Qatar Airways flights
Air New Zealand	PriceFrom $1,264	Free Cancellation	Rating 8.0 526 reviews	Search Air New Zealand flights
Cathay Pacific	PriceFrom $1,470	Free Cancellation	Rating 7.6 1,058 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.