HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$435+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to Australia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Mon 4/207:21 pm
ORD
-
MEL
1 stop44h 24m
Multiple Airlines
Mon 5/111:30 pm
MEL
-
ORD
2 stops31h 20m
Multiple Airlines
Deal found 2/7$921
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Mon 4/67:45 pm
ORD
-
MEL
1 stop44h 00m
Multiple Airlines
Sun 4/191:30 pm
MEL
-
ORD
2 stops31h 20m
Multiple Airlines
Deal found 2/9$928
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Thu 5/77:21 pm
ORD
-
BNE
1 stop42h 39m
Multiple Airlines
Mon 5/2511:55 am
BNE
-
ORD
2 stops33h 51m
Multiple Airlines
Deal found 2/9$933
This oojo deal was found by Cheapflights users on 2/9. 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.
Wed 2/112:15 pm
ORD
-
SYD
1 stop25h 45m
Qantas Airways
Thu 2/267:05 am
SYD
-
ORD
2 stops26h 32m
Qantas Airways
Deal found 2/9$941
This oojo deal was found by Cheapflights users on 2/10. 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 2/106:40 pm
ORD
-
SYD
1 stop21h 20m
Qantas Airways
Tue 3/37:05 am
SYD
-
ORD
2 stops24h 48m
Qantas Airways
Deal found 2/10$942
This oojo deal was found by Cheapflights users on 2/10. 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.
Mon 2/168:45 pm
ORD
-
MEL
1 stop43h 45m
Qantas Airways
Tue 2/246:45 am
MEL
-
ORD
2 stops25h 08m
Qantas Airways
Deal found 2/10$944
This oojo deal was found by Cheapflights users on 2/10. 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.
Wed 2/116:49 pm
ORD
-
SYD
1 stop21h 11m
Qantas Airways
Fri 2/277:05 am
SYD
-
ORD
2 stops26h 32m
Qantas Airways
Deal found 2/10$944
This oojo deal was found by Cheapflights users on 2/9. 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.
Thu 2/264:45 pm
ORD
-
SYD
1 stop21h 40m
Qantas Airways
Tue 3/37:05 am
SYD
-
ORD
2 stops24h 48m
Qantas Airways
Deal found 2/9$948
This oojo deal was found by Cheapflights users on 2/11. 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.
Mon 2/234:45 pm
ORD
-
SYD
1 stop21h 40m
Qantas Airways
Tue 3/37:05 am
SYD
-
ORD
2 stops24h 48m
Qantas Airways
Deal found 2/11$952
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Mon 4/137:45 pm
ORD
-
SYD
1 stop44h 45m
Multiple Airlines
Thu 4/301:15 pm
SYD
-
ORD
2 stops32h 31m
Multiple Airlines
Deal found 2/7$953
This oojo deal was found by Cheapflights users on 2/8. 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.
Mon 3/94:49 pm
ORD
-
MEL
2 stops37h 56m
Qantas Airways
Mon 3/1612:00 pm
MEL
-
ORD
1 stop21h 46m
Qantas Airways
Deal found 2/8$954
This oojo deal was found by Cheapflights users on 2/10. 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.
Thu 3/192:58 pm
ORD
-
MEL
2 stops39h 47m
Qantas Airways
Thu 4/99:45 am
MEL
-
ORD
1 stop22h 56m
Qantas Airways
Deal found 2/10$956

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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$912
(Kiwi.com)

One-way from

$435
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,097
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. 9% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 11, 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

O'Hare Intl

Fly to

Australia

Route

Depart

Return

Price

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 3/19

2:58 pm-10:45 pm

2 stops39h 47m

Melbourne

Thu 4/9

9:45 am-5:41 pm

1 stop22h 56m

$956

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 4/15

8:42 am-7:05 am

2 stops31h 23m

Brisbane

Sun 4/19

10:00 am-2:43 pm

1 stop19h 43m

$964

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 5/4

6:20 am-6:45 am

1 stop33h 25m

Melbourne

Mon 5/25

1:30 pm-7:00 am

2 stops32h 30m

$974

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 3/22

3:35 pm-1:30 pm

2 stops30h 55m

Brisbane

Wed 4/29

10:00 am-2:43 pm

1 stop19h 43m

$979

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 3/22

3:35 pm-11:30 am

2 stops28h 55m

Brisbane

Wed 4/29

10:00 am-2:43 pm

1 stop19h 43m

$988

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 3/25

1:14 pm-10:45 pm

2 stops41h 31m

Melbourne

Wed 4/1

9:45 am-2:53 pm

1 stop21h 08m

$991

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 4/13

3:40 pm-11:50 am

2 stops29h 40m

Adelaide

Mon 4/20

9:20 pm-7:58 pm

2 stops37h 08m

$1,003

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 5/16

3:40 pm-7:05 am

1 stop24h 25m

Brisbane

Sun 5/31

10:00 am-1:07 pm

2 stops42h 07m

$1,006

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Thu 5/7

6:03 pm-7:05 am

2 stops46h 02m

Brisbane

Sun 5/24

10:00 am-2:45 pm

1 stop19h 45m

$1,009

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Fri 3/20

3:35 pm-7:45 am

1 stop25h 10m

Brisbane

Sun 4/19

10:00 am-2:43 pm

1 stop19h 43m

$1,010

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 60 results
1
2
3
...
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, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $198). Flying from Chicago O'Hare Intl Airport to Australia in June is currently the most expensive (average of $833). 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.

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 February 11, 2026.
Peruse reviews from past customers who have flown with Fiji Airways, Qantas Airways, and United 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.
Fiji Airways
8.0
Very good
225 reviews

Boarding

8.1

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Fiji Airways
8.0
Very good
225 reviews
Fiji Airways
8.0
Very good
225 reviews

Boarding

8.1

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Qantas Airways
7.5
Good
988 reviews
Fiji Airways
8.0
Very good
225 reviews

Boarding

8.1

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
United Airlines
7.4
Good
9,274 reviews
Fiji Airways
8.0
Very good
225 reviews

Boarding

8.1

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
American Airlines
7.2
Good
11,266 reviews
Fiji Airways
8.0
Very good
225 reviews

Boarding

8.1

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Air Canada
7.1
Good
10,705 reviews
Fiji Airways
8.0
Very good
225 reviews

Boarding

8.1

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍

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 26h 40m. Fly via Qantas Airways, 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 ANA, with whom users have recently found tickets for as low as $304. However, be on the lookout for offers from Qantas Airways and American 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 - Brisbane, 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, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $198). Flying from Chicago O'Hare Intl Airport to Australia in June is currently the most expensive (average of $833). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$675Average$1,576FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$698Average$901FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$795Average$1,303FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$870Average$1,652FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$872Average$1,226FlexibilityNo cancel feeOn-time67%
DeltaCheapest$935Average$1,034FlexibilityNo cancel feeOn-timeN/A
ANACheapest$1,177Average$1,259FlexibilityNo cancel feeOn-time80%
Air New ZealandCheapest$1,217Average$1,489FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,229Average$2,092FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,470Average$1,786FlexibilityNo cancel feeOn-time72%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.