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$503+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheap 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 April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$852
(Mytrip)

One-way from

$503
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$877
Provider with most accurate pricing for Chicago (CHI)-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Sydney Kingsford Smith flights.
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From Chicago O'Hare Intl to Australia
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One-way flight from Chicago O'Hare Intl to Australia
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Highest demand for flights based on searches. 12% potential increase in price ($158 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 15, 2025.

This Mytrip deal was found by Cheapflights users on 4/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/138:37 amORD - CNS
2 stops35h 48mMultiple Airlines
Tue 5/2012:25 pmCNS - ORD
3 stops33h 17mMultiple Airlines
Deal found 4/14$887
This Justfly.com deal was found by Cheapflights users on 4/14. 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 11/252:25 pmORD - BNE
1 stop24h 05mQantas Airways
Thu 12/257:25 pmBNE - ORD
1 stop19h 45mQantas Airways
Deal found 4/14$895
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/252:50 pmORD - BNE
2 stops23h 40mAmerican Airlines
Thu 12/257:25 pmBNE - ORD
1 stop26h 45mAmerican Airlines
Deal found 4/14$939
This Mytrip deal was found by Cheapflights users on 4/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/216:59 pmORD - SYD
2 stops33h 21mMultiple Airlines
Wed 5/281:15 pmSYD - ORD
2 stops32h 27mMultiple Airlines
Deal found 4/15$1,079
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/12:45 pmORD - SYD
2 stops27h 05mQantas Airways
Sun 11/167:05 amSYD - ORD
2 stops27h 26mQantas Airways
Deal found 4/14$1,099
This Mytrip deal was found by Cheapflights users on 4/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:59 pmORD - BNE
3 stops31h 46mMultiple Airlines
Tue 5/206:00 amBNE - ORD
3 stops44h 36mMultiple Airlines
Deal found 4/15$1,101
This Mytrip deal was found by Cheapflights users on 4/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:59 pmORD - MEL
2 stops33h 21mMultiple Airlines
Wed 5/286:00 amMEL - ORD
3 stops39h 42mMultiple Airlines
Deal found 4/14$1,147
This oojo deal was found by Cheapflights users on 4/15. 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.
Sat 10/186:50 pmORD - SYD
2 stops35h 20mFiji Airways
Sat 10/252:45 pmSYD - ORD
2 stops22h 04mFiji Airways
Deal found 4/15$1,181
This KAYAK deal was found by Cheapflights users on 4/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/225:45 pmORD - SYD
1 stop34h 30mANA
Tue 9/911:50 amSYD - ORD
1 stop35h 50mANA
Deal found 4/14$1,184
This Gurufare deal was found by Cheapflights users on 4/14. 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.
Tue 11/43:24 pmORD - MEL
2 stops26h 56mQantas Airways
Tue 11/183:05 pmMEL - ORD
2 stops24h 55mQantas Airways
Deal found 4/14$1,198
This KAYAK deal was found by Cheapflights users on 4/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:40 amORD - ADL
2 stops34h 05mQantas Airways
Sun 11/1611:55 amADL - ORD
2 stops27h 35mQantas Airways
Deal found 4/13$1,214
This Mytrip deal was found by Cheapflights users on 4/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:59 pmORD - ADL
2 stops26h 06mMultiple Airlines
Thu 5/2212:35 pmADL - ORD
3 stops31h 20mMultiple Airlines
Deal found 4/15$1,215

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 April 15, 2025.
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

ChicagoCairns

ORD - CNS

ORDCNS

Chicago O'Hare Intl

Tue 5/13

8:37 am-11:25 am

2 stops35h 48m

Cairns

Tue 5/20

12:25 pm-6:42 am

3 stops33h 17m

$887

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 5/21

6:59 pm-7:20 pm

2 stops33h 21m

Sydney Kingsford Smith

Wed 5/28

1:15 pm-6:42 am

2 stops32h 27m

$1,079

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 5/13

6:59 pm-5:45 pm

3 stops31h 46m

Brisbane

Tue 5/20

6:00 am-11:36 am

3 stops44h 36m

$1,101

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Thu 5/15

6:59 pm-7:20 pm

2 stops33h 21m

Melbourne

Wed 5/28

6:00 am-6:42 am

3 stops39h 42m

$1,147

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 5/13

6:45 pm-11:45 am

2 stops26h 00m

Sydney Kingsford Smith

Tue 5/27

6:15 am-8:24 pm

2 stops29h 09m

$1,186

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 5/6

6:58 pm-7:45 pm

2 stops33h 47m

Sydney Kingsford Smith

Tue 5/13

9:40 pm-6:20 pm

2 stops35h 40m

$1,289

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 5/13

7:13 pm-10:35 am

2 stops24h 22m

Brisbane

Tue 5/20

11:40 am-8:24 pm

2 stops23h 44m

$1,314

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 6/23

9:59 am-6:45 am

1 stop29h 46m

Melbourne

Wed 7/16

11:55 am-5:42 pm

1 stop20h 47m

$1,342

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 6/11

9:59 am-7:05 am

1 stop30h 06m

Sydney Kingsford Smith

Tue 6/24

9:10 am-5:17 pm

1 stop23h 07m

$1,355

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 5/7

4:00 pm-10:50 am

1 stop27h 50m

Sydney Kingsford Smith

Sun 5/18

9:50 pm-2:25 pm

1 stop31h 35m

$1,369

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 60 results
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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, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $1,046). Flying from Chicago O'Hare Intl Airport to Australia in December is currently the most expensive (average of $1,643). 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.

What is the cheapest time of day to fly from ORD to AU?

Find hourly flight availability from O'Hare Intl to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 15, 2025.

When flying from Chicago O'Hare Intl Airport to Australia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Australia ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Australia when rainfall is around 2.0 in.

Temperature in Australia by month

Plan your trip to Australia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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 April 15, 2025.
Read reviews from past customers who have flown Air Tahiti Nui, EVA Air and Japan Airlines from Chicago to Australia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.8
Very good
62 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
EVA Air
8.4
Very good
1,176 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Japan Airlines
8.3
Very good
1,440 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
ANA
8.3
Very good
841 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Singapore Airlines
8.1
Very good
1,288 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Entertainment

7.3

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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.

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

    The cheapest airline one-way is Fiji Airways, with whom users have recently found tickets for as low as $714. However, be on the lookout for offers from Alaska Airlines and Air Canada, 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, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $1,046). Flying from Chicago O'Hare Intl Airport to Australia in December is currently the most expensive (average of $1,643). 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.

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Alternative routes for O'Hare Intl to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$630Average$1,197FlexibilityNo cancel feeOn-time74%
ANACheapest$679Average$781FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$679Average$939FlexibilityNo cancel feeOn-time71%
DeltaCheapest$852Average$967FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$953Average$1,335FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,164Average$1,623FlexibilityNo cancel feeOn-time69%
Fiji AirwaysCheapest$1,217Average$1,398FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,256Average$1,704FlexibilityNo cancel feeOn-time78%
Cathay PacificCheapest$1,305Average$1,517FlexibilityNo cancel feeOn-time72%
Singapore AirlinesCheapest$1,421Average$1,706FlexibilityNo cancel feeOn-time81%

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