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Cheap flights from Chicago O'Hare Intl Airport to Australia from $544

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Australia departing on 11/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago O'Hare Intl Airport to Australia

Cheap round-trip flights

Multiple Airlines Logo
12:23 pm - 9:00 amORD-SYD
28h 37m2 stops
Multiple Airlines Logo
2:05 pm - 12:11 amSYD-ORD
27h 06m2 stops
$1,051Multiple Airlines
Find Deal
Mon, Oct 27 - Sun, Nov 9
Fiji Airways Logo
6:45 pm - 12:30 pmORD-SYD
25h 45m2 stops
Fiji Airways Logo
2:10 pm - 9:07 pmSYD-ORD
22h 57m2 stops
$1,102Fiji Airways
Find Deal
Tue, Mar 17 - Tue, Mar 24
Air Canada Logo
3:40 pm - 1:35 pmORD-MEL
28h 55m2 stops
Air Canada Logo
7:10 am - 2:41 pmMEL-ORD
24h 31m2 stops
$1,313Air Canada
Find Deal
Mon, Feb 2 - Sun, Feb 15
Air Canada Logo
3:40 pm - 2:15 pmORD-MEL
29h 35m2 stops
Air Canada Logo
7:00 am - 7:30 pmMEL-ORD
29h 30m3 stops
$1,324Air Canada
Find Deal
Mon, Feb 2 - Sun, Feb 15
Qantas Airways Logo
6:23 pm - 9:30 amORD-MEL
22h 07m1 stop
Qantas Airways Logo
6:45 am - 5:52 pmMEL-ORD
28h 07m2 stops
$1,344Qantas Airways
Find Deal
Mon, Dec 1 - Tue, Dec 9
Qantas Airways Logo
6:17 pm - 3:35 pmORD-MEL
28h 18m2 stops
Qantas Airways Logo
12:00 pm - 3:59 pmMEL-ORD
20h 59m1 stop
$1,346Qantas Airways
Find Deal
Thu, Dec 4 - Wed, Jan 14
American Airlines Logo
1:16 pm - 5:00 amORD-BNE
23h 44m2 stops
American Airlines Logo
5:10 pm - 4:56 amBNE-ORD
27h 46m1 stop
$1,440American Airlines
Find Deal
Sun, Feb 8 - Sun, Mar 1
United Airlines Logo
10:05 pm - 7:30 amORD-BNE
41h 25m1 stop
United Airlines Logo
11:40 am - 4:58 pmBNE-ORD
21h 18m2 stops
$1,475United Airlines
Find Deal
Sat, Nov 29 - Sun, Dec 7
United Airlines Logo
11:55 pm - 7:30 amORD-BNE
39h 35m1 stop
United Airlines Logo
11:40 am - 4:58 pmBNE-ORD
21h 18m2 stops
$1,476United Airlines
Find Deal
Sat, Nov 29 - Sun, Dec 7
American Airlines Logo
1:49 pm - 5:00 amORD-BNE
23h 11m1 stop
American Airlines Logo
9:40 am - 10:23 pmBNE-ORD
28h 43m1 stop
$1,492American Airlines
Find Deal
Fri, Nov 21 - Mon, Dec 1

Fiji Airways flights from Chicago O'Hare Intl Airport to Australia

Our best Fiji Airways deals on Chicago O'Hare Intl Airport to Australia flight tickets
Fiji Airways
Mar 17
ORD6:45 pmChicago O'Hare Intl
25h 45m
2 stops
SYD12:30 pmSydney Kingsford Smith
Mar 24
SYD2:10 pmSydney Kingsford Smith
22h 57m
2 stops
ORD9:07 pmChicago O'Hare Intl
$1,102
Find similar
Fiji Airways
Feb 24
ORD4:45 pmChicago O'Hare Intl
36h 05m
2 stops
SYD9:50 pmSydney Kingsford Smith
Mar 7
SYD6:00 amSydney Kingsford Smith
30h 18m
2 stops
ORD7:18 pmChicago O'Hare Intl
$1,125
Find similar
Fiji Airways
Feb 11
ORD5:40 pmChicago O'Hare Intl
25h 50m
2 stops
SYD12:30 pmSydney Kingsford Smith
Feb 28
SYD6:00 amSydney Kingsford Smith
30h 18m
2 stops
ORD7:18 pmChicago O'Hare Intl
$1,174
Find similar

Hawaiian Airlines flights from Chicago O'Hare Intl Airport to Australia

Our best Hawaiian Airlines deals on Chicago O'Hare Intl Airport to Australia flight tickets
Hawaiian Airlines
Feb 10
ORD2:00 pmChicago O'Hare Intl
36h 45m
2 stops
SYD7:45 pmSydney Kingsford Smith
Feb 27
SYD9:40 pmSydney Kingsford Smith
32h 24m
2 stops
ORD1:04 pmChicago O'Hare Intl
$1,126
Find similar
Hawaiian Airlines
Jan 12
ORD2:00 pmChicago O'Hare Intl
36h 45m
2 stops
SYD7:45 pmSydney Kingsford Smith
Jan 26
SYD9:40 pmSydney Kingsford Smith
32h 24m
2 stops
ORD1:04 pmChicago O'Hare Intl
$1,149
Find similar
Hawaiian Airlines
Jan 14
ORD2:00 pmChicago O'Hare Intl
36h 45m
2 stops
SYD7:45 pmSydney Kingsford Smith
Jan 21
SYD9:40 pmSydney Kingsford Smith
32h 24m
2 stops
ORD1:04 pmChicago O'Hare Intl
$1,158
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 23, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 10/27

12:23 pm-9:00 am

2 stops28h 37m

Sydney Kingsford Smith

Sun 11/9

2:05 pm-12:11 am

2 stops27h 06m

$1,051

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 3/17

6:45 pm-12:30 pm

2 stops25h 45m

Sydney Kingsford Smith

Tue 3/24

2:10 pm-9:07 pm

2 stops22h 57m

$1,102

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/2

3:40 pm-1:35 pm

2 stops28h 55m

Melbourne

Sun 2/15

7:10 am-2:41 pm

2 stops24h 31m

$1,313

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

$1,324

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 12/1

6:23 pm-9:30 am

1 stop22h 07m

Melbourne

Tue 12/9

6:45 am-5:52 pm

2 stops28h 07m

$1,344

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 12/4

6:17 pm-3:35 pm

2 stops28h 18m

Melbourne

Wed 1/14

12:00 pm-3:59 pm

1 stop20h 59m

$1,346

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 2/8

1:16 pm-5:00 am

2 stops23h 44m

Brisbane

Sun 3/1

5:10 pm-4:56 am

1 stop27h 46m

$1,440

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 11/29

10:05 pm-7:30 am

1 stop41h 25m

Brisbane

Sun 12/7

11:40 am-4:58 pm

2 stops21h 18m

$1,475

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 11/29

11:55 pm-7:30 am

1 stop39h 35m

Brisbane

Sun 12/7

11:40 am-4:58 pm

2 stops21h 18m

$1,476

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Fri 11/21

1:49 pm-5:00 am

1 stop23h 11m

Brisbane

Mon 12/1

9:40 am-10:23 pm

1 stop28h 43m

$1,492

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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

What is the cheapest month to fly to Australia?

The month of March is, on average, the cheapest month to fly to Australia from Chicago O'Hare Intl Airport, with most prices found around $856. If you aren’t able to travel during the month of March, then book flights to Australia from Chicago O'Hare Intl Airport during May instead. Flights to Australia in May, while not as cheap as those in March, still average around $872.

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

The cheapest day to depart from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,108 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Chicago O'Hare Intl Airport for as low as $859 on momondo.

Can stopping save me money on Chicago O'Hare Intl Airport to Australia flights?

You could potentially save up to 9% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Australia flight.

Cheap Chicago O'Hare Intl Airport to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Australia

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Australia. There are no popular flight routes from Chicago O'Hare Intl Airport to Australia.
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  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Australia?

    Prices for flights from Chicago O'Hare Intl Airport to Australia were last updated today.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Australia?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Australia.

  • What documentation or ID do you need to fly to Australia?

    The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Chicago O'Hare Intl Airport to Australia

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Australia with momondo
Airline
Rating
Free Cancellation
Price
Qantas AirwaysPriceFrom $647Free CancellationRating
7.5
908 reviews
Search Qantas Airways flights
ANAPriceFrom $679Free CancellationRating
8.4
970 reviews
Search ANA flights
American AirlinesPriceFrom $679Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Fiji AirwaysPriceFrom $772Free CancellationRating
8.0
205 reviews
Search Fiji Airways flights
DeltaPriceFrom $846Free CancellationRating
7.9
7,974 reviews
Search Delta flights
Air CanadaPriceFrom $872Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,169Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Qatar AirwaysPriceFrom $1,229Free CancellationRating
7.4
3,626 reviews
Search Qatar Airways flights
Air New ZealandPriceFrom $1,264Free CancellationRating
8.0
505 reviews
Search Air New Zealand flights
Cathay PacificPriceFrom $1,470Free CancellationRating
7.6
1,008 reviews
Search Cathay Pacific flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Australia. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Australia from Chicago which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Australia from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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