Australia

$484+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Jul 24 — Jul 311
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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 June 24, 2026.

This Trip.com deal was found by Cheapflights users on 6/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:20 am
ORD
-
SYD
3 stops35h 30m
Multiple Airlines
Tue 9/86:15 am
SYD
-
ORD
2 stops39h 02m
Multiple Airlines
Deal found 6/23$1,073
This Trip.com deal was found by Cheapflights users on 6/19. 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.
Fri 9/189:26 am
ORD
-
BNE
3 stops34h 09m
Multiple Airlines
Mon 10/511:50 am
BNE
-
ORD
3 stops37h 11m
Multiple Airlines
Deal found 6/19$1,112
This Bravofly deal was found by Cheapflights users on 6/20. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:30 pm
ORD
-
SYD
2 stops31h 40m
ANA
Wed 8/2611:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 6/20$1,213
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/89:13 pm
ORD
-
SYD
2 stops47h 37m
Multiple Airlines
Tue 8/185:50 pm
SYD
-
ORD
1 stop27h 27m
Multiple Airlines
Deal found 6/21$1,217
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:13 pm
ORD
-
SYD
2 stops47h 37m
Multiple Airlines
Tue 8/185:50 pm
SYD
-
ORD
1 stop27h 27m
Multiple Airlines
Deal found 6/21$1,218
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:20 pm
ORD
-
SYD
2 stops47h 30m
Multiple Airlines
Sat 9/55:50 pm
SYD
-
ORD
1 stop27h 27m
Multiple Airlines
Deal found 6/21$1,235
This lol.travel deal was found by Cheapflights users on 6/21. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
Thu 8/2711:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 6/21$1,243
This Rumbo deal was found by Cheapflights users on 6/24. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
Sat 8/298:55 pm
SYD
-
ORD
1 stop33h 00m
ANA
Deal found 6/24$1,247
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:13 pm
ORD
-
SYD
2 stops47h 37m
Multiple Airlines
Fri 8/145:50 pm
SYD
-
ORD
1 stop27h 27m
Multiple Airlines
Deal found 6/21$1,258
This Kiwi.com deal was found by Cheapflights users on 6/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:20 pm
ORD
-
MEL
2 stops47h 40m
Multiple Airlines
Tue 8/259:45 am
MEL
-
ORD
1 stop35h 32m
Multiple Airlines
Deal found 6/24$1,311
This oojo deal was found by Cheapflights users on 6/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/113:00 pm
ORD
-
MEL
2 stops28h 55m
Air New Zealand
Tue 8/2512:10 pm
MEL
-
ORD
2 stops24h 20m
Air New Zealand
Deal found 6/23$1,312
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:13 pm
ORD
-
MEL
2 stops47h 47m
Multiple Airlines
Tue 8/259:45 am
MEL
-
ORD
1 stop35h 32m
Multiple Airlines
Deal found 6/23$1,315

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 June 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,073
(Trip.com)

One-way from

$484
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,384
Provider with most accurate pricing for Chicago (CHI)-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Chicago (CHI)-Sydney Kingsford Smith flights.
From Chicago O'Hare Intl to Australia
One-way flight from Chicago O'Hare Intl to Australia
Highest demand for flights based on searches. 7% potential increase in price ($112 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
Average for round-trip flights in June 2026

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 June 24, 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

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 10/18

5:45 pm-8:10 pm

1 stop34h 25m

Sydney Kingsford Smith

Sat 10/24

9:45 pm-8:20 am

1 stop26h 35m

$1,269

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 11/24

2:00 pm-6:10 pm

3 stops35h 40m

Adelaide

Tue 12/1

6:10 am-2:41 pm

2 stops25h 01m

$1,452

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/3

3:40 pm-11:10 am

2 stops29h 00m

Adelaide

Mon 8/10

8:00 pm-10:05 pm

3 stops40h 35m

$1,459

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Fri 11/27

2:40 pm-10:55 am

2 stops27h 15m

Melbourne

Mon 12/14

8:00 am-6:54 pm

2 stops27h 54m

$1,461

ChicagoMelbourne

ORD - AVV

ORDAVV

Chicago O'Hare Intl

Mon 11/16

3:40 pm-2:05 pm

2 stops29h 25m

Melbourne Avalon

Mon 11/30

6:00 am-2:41 pm

2 stops25h 41m

$1,470

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 10/16

7:45 pm-1:30 pm

2 stops26h 15m

Adelaide

Sun 10/25

6:10 am-2:41 pm

2 stops24h 01m

$1,475

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 8/10

7:40 pm-6:10 pm

2 stops32h 00m

Adelaide

Wed 8/19

8:00 pm-2:36 pm

2 stops33h 06m

$1,486

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 8/13

4:20 pm-8:15 am

1 stop24h 55m

Melbourne

Wed 8/26

10:55 am-8:40 pm

1 stop24h 45m

$1,591

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 8/25

10:35 am-8:15 am

1 stop30h 40m

Melbourne

Thu 9/3

10:55 am-8:26 pm

1 stop24h 31m

$1,600

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Fri 10/16

2:32 pm-9:15 am

1 stop26h 43m

Melbourne

Sun 10/25

11:45 am-6:29 pm

1 stop22h 44m

$1,600

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

Showing 1-10 of 60 resultsSorted by cheapest first
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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 June 24, 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.

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.4

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.4

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.4

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.4

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.4

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.4

Overall

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 27h 15m. Fly via ANA, Air Canada, or Air New Zealand to get the fastest option. Chicago O'Hare Intl Airport and Australia are separated by a distance of 9660 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?

  • 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 June 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$198Average$1,536FlexibilityNo cancel feeOn-time71%
DeltaCheapest$261Average$1,547FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$712Average$1,137FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$716Average$1,185FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$836Average$1,525FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$870Average$1,700FlexibilityNo cancel feeOn-time69%
ANACheapest$1,193Average$1,288FlexibilityNo cancel feeOn-time80%
Qatar AirwaysCheapest$1,263Average$1,762FlexibilityNo cancel feeOn-time68%
Air New ZealandCheapest$1,264Average$1,566FlexibilityNo cancel feeOn-time78%
Cathay PacificCheapest$1,560Average$1,973FlexibilityNo cancel feeOn-time72%

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