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$431+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Apr 4 — Apr 111
Sat 4/4
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 March 5, 2026.

This Trip.com deal was found by Cheapflights users on 3/1. 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.
Wed 4/157:51 am
ORD
-
BNE
2 stops35h 44m
Multiple Airlines
Wed 4/2211:35 am
BNE
-
ORD
2 stops33h 00m
Multiple Airlines
Deal found 3/1$829
This lol.travel deal was found by Cheapflights users on 3/2. 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.
Sun 4/58:50 am
ORD
-
BNE
1 stop31h 15m
Air Canada
Tue 4/2110:00 am
BNE
-
ORD
2 stops22h 01m
Air Canada
Deal found 3/2$869
This Trip.com deal was found by Cheapflights users on 3/4. 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 4/235:15 am
ORD
-
MEL
2 stops39h 45m
Multiple Airlines
Thu 4/301:30 pm
MEL
-
ORD
2 stops24h 57m
Multiple Airlines
Deal found 3/4$872
This BusinessClass deal was found by Cheapflights users on 3/1. 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 4/133:40 pm
ORD
-
BNE
1 stop24h 25m
Multiple Airlines
Mon 5/1110:00 am
BNE
-
ORD
2 stops34h 25m
Multiple Airlines
Deal found 3/1$881
This Air Canada deal was found by Cheapflights users on 3/1. 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 3/1$882
This Air Canada deal was found by Cheapflights users on 3/4. 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 3/247:15 am
ORD
-
BNE
2 stops33h 30m
Air Canada
Tue 5/510:00 am
BNE
-
ORD
1 stop19h 45m
Air Canada
Deal found 3/4$885
This Trip.com deal was found by Cheapflights users on 3/4. 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 4/175:15 am
ORD
-
MEL
2 stops39h 50m
Multiple Airlines
Sat 4/251:30 pm
MEL
-
ORD
2 stops31h 05m
Multiple Airlines
Deal found 3/4$888
This BusinessClass deal was found by Cheapflights users on 2/28. 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 5/173:40 pm
ORD
-
BNE
1 stop24h 25m
Multiple Airlines
Sun 5/3110:00 am
BNE
-
ORD
1 stop19h 45m
Multiple Airlines
Deal found 2/28$892
This Trip.com deal was found by Cheapflights users on 3/3. 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.
Sat 4/188:00 am
ORD
-
MEL
2 stops37h 00m
Multiple Airlines
Sat 4/251:30 pm
MEL
-
ORD
2 stops24h 57m
Multiple Airlines
Deal found 3/3$895
This Air Canada deal was found by Cheapflights users on 3/1. 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 4/153:40 pm
ORD
-
BNE
2 stops29h 20m
Air Canada
Wed 4/2210:00 am
BNE
-
ORD
1 stop25h 15m
Air Canada
Deal found 3/1$916
This Trip.com deal was found by Cheapflights users on 3/3. 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 4/172:00 pm
ORD
-
MEL
2 stops31h 05m
Multiple Airlines
Fri 4/241:30 pm
MEL
-
ORD
2 stops24h 57m
Multiple Airlines
Deal found 3/3$917
This BusinessClass deal was found by Cheapflights users on 3/4. 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 3/233:35 pm
ORD
-
BNE
1 stop25h 10m
Multiple Airlines
Mon 5/410:00 am
BNE
-
ORD
2 stops34h 25m
Multiple Airlines
Deal found 3/4$919

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 March 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$829
(Trip.com)

One-way from

$431
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$1,246
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 ($136 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 5, 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
Quickest round-trip

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 4/29

3:40 pm-7:05 am

1 stop24h 25m

Brisbane

Thu 5/7

10:00 am-2:45 pm

1 stop19h 45m

$920

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 4/20

2:00 pm-1:55 pm

3 stops33h 25m

Adelaide

Mon 4/27

9:20 pm-2:45 pm

2 stops31h 55m

$941

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 4/19

6:00 pm-5:00 am

1 stop20h 00m

Brisbane

Sun 4/26

8:35 pm-5:47 am

1 stop24h 12m

$1,142

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 4/29

2:00 pm-11:30 am

3 stops30h 30m

Brisbane

Thu 5/7

7:40 pm-7:25 pm

3 stops38h 45m

$1,158

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 4/19

6:00 pm-11:15 am

2 stops26h 45m

Adelaide

Sun 4/26

6:00 am-7:57 pm

2 stops28h 27m

$1,179

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 6/10

9:15 pm-1:55 pm

3 stops50h 10m

Adelaide

Wed 6/17

8:00 pm-2:41 pm

2 stops33h 11m

$1,231

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Fri 4/17

9:13 pm-5:00 am

1 stop40h 47m

Brisbane

Wed 4/29

8:35 pm-9:21 pm

1 stop39h 46m

$1,270

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Fri 4/17

3:40 pm-3:55 pm

2 stops33h 45m

Adelaide

Fri 4/24

7:35 pm-2:45 pm

2 stops33h 40m

$1,273

ChicagoCairns

ORD - CNS

ORDCNS

Chicago O'Hare Intl

Sun 4/19

6:00 pm-10:35 am

2 stops25h 35m

Cairns

Sun 4/26

1:55 pm-5:47 am

2 stops30h 52m

$1,356

ChicagoCairns

ORD - CNS

ORDCNS

Chicago O'Hare Intl

Mon 4/13

4:30 pm-10:35 am

2 stops27h 05m

Cairns

Mon 4/27

3:45 pm-5:47 am

2 stops29h 02m

$1,358

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Showing 1-10 of 60 resultsSorted by cheapest first
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 $841). 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 March 5, 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

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

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
228 reviews
Fiji Airways
8.0
Very good
228 reviews

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

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
1,002 reviews
Fiji Airways
8.0
Very good
228 reviews

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

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
9,397 reviews
Fiji Airways
8.0
Very good
228 reviews

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

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
7.1
Good
11,385 reviews
Fiji Airways
8.0
Very good
228 reviews

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

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
10,777 reviews
Fiji Airways
8.0
Very good
228 reviews

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

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 24h 25m. Fly via Air Canada, Qantas Airways, or Air New Zealand 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 - 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 $841). 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 March 5, 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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