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$545+ Cheap flights from O'Hare Intl (ORD) to Australia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Jun 24 — Jul 11
Wed 6/24
Wed 7/1
1 adult, Economy
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Cheap flight deals from O'Hare Intl to Australia

Cheapest flights from O'Hare Intl to Australia
Explore the most affordable flight options available from O'Hare Intl to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 25, 2026.

This Expedia deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:40 pm
ORD
-
BNE
1 stop24h 25m
Air Canada
Thu 9/2410:15 am
BNE
-
ORD
1 stop24h 51m
Air Canada
Deal found 5/20$1,019
This Trip.com deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:15 am
ORD
-
MEL
3 stops37h 45m
Multiple Airlines
Wed 8/121:25 pm
MEL
-
ORD
2 stops31h 52m
Multiple Airlines
Deal found 5/24$1,216
This Jetabroad deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:18 pm
ORD
-
MEL
2 stops34h 02m
Multiple Airlines
Thu 8/207:30 am
MEL
-
ORD
2 stops28h 32m
Multiple Airlines
Deal found 5/21$1,267
This FlightHub deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
Thu 9/311:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/21$1,271
This Justfly.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
Tue 9/811:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/21$1,273
This FlightHub deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
Sun 9/611:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 5/20$1,277
This FlightHub deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:45 pm
ORD
-
SYD
1 stop24h 40m
ANA
Sun 11/112:25 pm
SYD
-
ORD
1 stop42h 25m
ANA
Deal found 5/21$1,283
This FlightHub deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:45 pm
ORD
-
SYD
1 stop24h 40m
ANA
Sun 9/611:45 am
SYD
-
ORD
1 stop42h 10m
ANA
Deal found 5/20$1,284
This Justfly.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
Mon 9/711:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/23$1,291
This Justfly.com deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:50 am
ORD
-
SYD
2 stops33h 35m
ANA
Fri 9/411:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/24$1,292
This Justfly.com deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:45 pm
ORD
-
SYD
1 stop24h 40m
ANA
Fri 9/411:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/24$1,293
This FlightHub deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
Sun 9/611:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 5/24$1,296

Find flight deals from O'Hare Intl to Australia

Keep the following information in mind while searching for O'Hare Intl to Australia flight deals. Data was last updated May 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,019
(Expedia)

One-way from

$545
(flugladen.de)

Popular in

July

Cheapest in

February

Average price

$1,459
Provider with most accurate pricing for Chicago (CHI)-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Sydney Kingsford Smith flights.
Search Deals
From Chicago O'Hare Intl to Australia
Search Deals
One-way flight from Chicago O'Hare Intl to Australia
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated May 25, 2026.
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

Cheapest round-trip

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 8/8

9:14 am-7:05 am

2 stops30h 51m

Brisbane

Sun 8/16

10:00 am-9:35 am

2 stops38h 35m

$1,406

ChicagoCoolangatta

ORD - OOL

ORDOOL

Chicago O'Hare Intl

Sun 10/11

3:40 pm-1:40 pm

2 stops31h 00m

Coolangatta Gold Coast

Mon 10/19

6:00 am-2:43 pm

2 stops23h 43m

$1,446

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/10

3:40 pm-1:55 pm

2 stops31h 45m

Adelaide

Wed 8/19

6:55 pm-2:36 pm

2 stops34h 11m

$1,489

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 6/15

3:40 pm-11:50 am

2 stops29h 40m

Adelaide

Wed 7/15

8:00 pm-10:05 pm

3 stops40h 35m

$1,497

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 8/25

6:54 pm-6:50 pm

2 stops32h 56m

Sydney Kingsford Smith

Fri 9/4

8:45 pm-1:26 pm

2 stops31h 41m

$1,548

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 8/20

6:54 pm-6:50 pm

2 stops32h 56m

Sydney Kingsford Smith

Tue 9/1

8:45 pm-6:20 am

3 stops24h 35m

$1,553

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Fri 7/10

7:30 am-7:30 am

2 stops33h 00m

Melbourne

Thu 7/23

10:55 am-8:14 pm

2 stops24h 19m

$1,592

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 7/13

6:20 pm-8:15 am

1 stop22h 55m

Melbourne

Sun 7/26

9:30 am-8:40 pm

1 stop26h 10m

$1,593

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sat 7/11

6:10 am-8:15 am

1 stop35h 05m

Melbourne

Fri 7/24

9:30 am-6:46 pm

2 stops24h 16m

$1,594

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 10/16

3:49 pm-6:50 pm

2 stops35h 01m

Sydney Kingsford Smith

Sat 10/24

8:45 pm-1:25 pm

2 stops32h 40m

$1,607

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/25

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from O'Hare Intl to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from O'Hare Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Australia

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Australia?

Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $113). Flying from Chicago O'Hare Intl Airport to Australia in July is currently the most expensive (average of $768). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Australia?

The price you pay for your flight from Chicago O'Hare Intl Airport to Australia may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated May 25, 2026.
Peruse reviews from past customers who have flown with Air New Zealand,Qantas Airways, andUnited Airlines from Chicago O'Hare Intl Airport to Australia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very good
648 reviews

Crew

8.5

Entertainment

7.4

Food

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air New Zealand
8.0
Very good
648 reviews
Air New Zealand
8.0
Very good
648 reviews

Crew

8.5

Entertainment

7.4

Food

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Qantas Airways
7.5
Good
1,041 reviews
Air New Zealand
8.0
Very good
648 reviews

Crew

8.5

Entertainment

7.4

Food

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
United Airlines
7.4
Good
9,747 reviews
Air New Zealand
8.0
Very good
648 reviews

Crew

8.5

Entertainment

7.4

Food

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
American Airlines
7.1
Good
11,629 reviews
Air New Zealand
8.0
Very good
648 reviews

Crew

8.5

Entertainment

7.4

Food

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air Canada
7.1
Good
11,083 reviews
Air New Zealand
8.0
Very good
648 reviews

Crew

8.5

Entertainment

7.4

Food

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago O'Hare Intl Airport to Australia?

    There are many flights that can get you from Chicago O'Hare Intl Airport to Australia in 30h 51m. Fly via Air Canada, United Airlines, or Delta to get the fastest option. Chicago O'Hare Intl Airport and Australia are separated by a distance of 8897 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Australia one-way?

    The cheapest airline one-way is Qantas Airways, with whom users have recently found tickets for as low as $441. However, be on the lookout for offers from ANA and United Airlines, as they are both options that can get you from Chicago O'Hare Intl Airport to Australia for a low price.

  • What are the most popular routes from Chicago O'Hare Intl Airport to Australia?

    While some choose either Chicago O'Hare Intl - Melbourne or Chicago O'Hare Intl - Melbourne Avalon, Chicago O'Hare Intl - Sydney Kingsford Smith is the most popular route from Chicago O'Hare Intl Airport to Australia.

  • Can I find deals for flights from O'Hare Intl to Australia that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Australia.

  • Can I find deals for business class flights from O'Hare Intl to Australia?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Australia?

    Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $113). Flying from Chicago O'Hare Intl Airport to Australia in July is currently the most expensive (average of $768). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 10 airlines flying from O'Hare Intl to Australia

Discover the top 10 airlines that operate flights from O'Hare Intl to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$198Average$1,523FlexibilityNo cancel feeOn-time71%
DeltaCheapest$317Average$1,418FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$712Average$1,127FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$716Average$1,206FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$836Average$1,520FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$870Average$1,691FlexibilityNo cancel feeOn-time69%
ANACheapest$1,193Average$1,288FlexibilityNo cancel feeOn-time80%
Air New ZealandCheapest$1,217Average$1,517FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,263Average$1,762FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,502Average$1,890FlexibilityNo cancel feeOn-time72%

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