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$426+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Mar 30 — Apr 61
Mon 3/30
Mon 4/6
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 February 28, 2026.

This BusinessClass deal was found by Cheapflights users on 2/26. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/123:40 pm
ORD
-
BNE
1 stop24h 25m
Multiple Airlines
Mon 4/2710:00 am
BNE
-
ORD
2 stops34h 27m
Multiple Airlines
Deal found 2/26$881
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/233:35 pm
ORD
-
BNE
1 stop25h 10m
Air Canada
Tue 4/2110:00 am
BNE
-
ORD
1 stop19h 45m
Air Canada
Deal found 2/27$882
This Air Canada deal was found by Cheapflights users on 2/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:50 pm
ORD
-
BNE
2 stops27h 15m
Air Canada
Wed 4/2910:00 am
BNE
-
ORD
1 stop19h 45m
Air Canada
Deal found 2/26$885
This BusinessClass deal was found by Cheapflights users on 2/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:40 pm
ORD
-
BNE
1 stop24h 25m
Multiple Airlines
Mon 5/410:00 am
BNE
-
ORD
2 stops34h 25m
Multiple Airlines
Deal found 2/25$890
This Expedia deal was found by Cheapflights users on 2/25. 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.
Wed 4/223:40 pm
ORD
-
BNE
1 stop24h 25m
Air Canada
Wed 4/2910:00 am
BNE
-
ORD
1 stop19h 45m
Air Canada
Deal found 2/25$891
This BusinessClass deal was found by Cheapflights users on 2/27. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:40 pm
ORD
-
BNE
1 stop24h 25m
EVA Air
Wed 4/2910:00 am
BNE
-
ORD
2 stops21h 35m
EVA Air
Deal found 2/27$892
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:42 am
ORD
-
BNE
2 stops31h 23m
Air Canada
Mon 4/2010:00 am
BNE
-
ORD
1 stop25h 15m
Air Canada
Deal found 2/27$893
This Air Canada deal was found by Cheapflights users on 2/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:40 am
ORD
-
BNE
2 stops31h 25m
Air Canada
Tue 4/2110:00 am
BNE
-
ORD
1 stop19h 45m
Air Canada
Deal found 2/24$895
This BusinessClass deal was found by Cheapflights users on 2/27. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:05 am
ORD
-
BNE
2 stops29h 00m
Singapore Airlines
Sun 5/3110:00 am
BNE
-
ORD
1 stop19h 45m
Singapore Airlines
Deal found 2/27$896
This Priceline deal was found by Cheapflights users on 2/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:40 pm
ORD
-
ADL
2 stops31h 45m
Air Canada
Tue 4/216:55 pm
ADL
-
ORD
2 stops39h 50m
Air Canada
Deal found 2/27$939
This Gurufare deal was found by Cheapflights users on 2/25. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:40 pm
ORD
-
ADL
2 stops29h 40m
Multiple Airlines
Mon 4/279:20 pm
ADL
-
ORD
2 stops31h 55m
Multiple Airlines
Deal found 2/25$966
This Trip.com deal was found by Cheapflights users on 2/26. 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 4/272:00 pm
ORD
-
MEL
2 stops29h 55m
Multiple Airlines
Wed 5/138:35 am
MEL
-
ORD
2 stops29h 52m
Multiple Airlines
Deal found 2/26$997

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 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$881
(BusinessClass)

One-way from

$426
(Trip.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 ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($23 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 28, 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

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Tue 4/14

3:40 pm-1:55 pm

2 stops31h 45m

Adelaide

Tue 4/21

6:55 pm-8:15 pm

2 stops39h 50m

$939

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 6/17

3:57 pm-6:30 am

1 stop23h 33m

Brisbane

Sun 6/28

10:30 am-8:00 am

2 stops36h 30m

$1,161

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 3/22

8:58 am-6:30 am

1 stop30h 32m

Brisbane

Fri 4/17

10:30 am-11:29 pm

1 stop27h 59m

$1,207

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 3/14

4:35 pm-8:30 am

1 stop24h 25m

Adelaide

Mon 3/23

2:15 pm-5:07 am

1 stop30h 22m

$1,208

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 3/14

6:20 pm-8:30 am

1 stop22h 40m

Adelaide

Wed 3/25

2:15 pm-9:37 pm

1 stop22h 52m

$1,209

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Thu 6/25

10:55 pm-6:30 am

2 stops40h 35m

Brisbane

Sun 7/5

10:30 am-10:59 pm

1 stop27h 29m

$1,211

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 4/11

4:30 pm-5:00 am

1 stop21h 30m

Brisbane

Sat 4/18

8:35 pm-5:47 am

1 stop24h 12m

$1,249

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 4/13

8:10 pm-5:10 pm

2 stops32h 00m

Perth

Mon 4/20

6:25 pm-6:15 pm

2 stops36h 50m

$1,275

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 4/4

4:45 pm-5:00 am

1 stop21h 15m

Brisbane

Sat 4/11

8:45 am-5:44 pm

2 stops23h 59m

$1,276

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 5/17

10:30 am-5:00 am

1 stop27h 30m

Brisbane

Sat 5/30

8:45 am-6:11 pm

2 stops24h 26m

$1,292

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/25

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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, 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 $836). 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 28, 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
228 reviews

Food

7.5

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

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
228 reviews
Fiji Airways
8.0
Very good
228 reviews

Food

7.5

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

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
1,000 reviews
Fiji Airways
8.0
Very good
228 reviews

Food

7.5

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

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
9,365 reviews
Fiji Airways
8.0
Very good
228 reviews

Food

7.5

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

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
11,367 reviews
Fiji Airways
8.0
Very good
228 reviews

Food

7.5

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

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
10,757 reviews
Fiji Airways
8.0
Very good
228 reviews

Food

7.5

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

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 23h 33m. 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 $426. However, be on the lookout for offers from ANA 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 - Sydney Kingsford Smith or Chicago O'Hare Intl - Brisbane, Chicago O'Hare Intl - Melbourne 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 $836). 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 February 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$675Average$1,642FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$710Average$1,444FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$795Average$1,303FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$870Average$1,648FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$872Average$1,222FlexibilityNo cancel feeOn-time67%
DeltaCheapest$936Average$1,034FlexibilityNo cancel feeOn-timeN/A
ANACheapest$1,177Average$1,237FlexibilityNo cancel feeOn-time80%
Air New ZealandCheapest$1,217Average$1,489FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,263Average$1,762FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,470Average$1,786FlexibilityNo cancel feeOn-time72%

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