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$508+ 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 6/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
may. 5 — may. 121
lun. 5/5
lun. 5/12
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 abril 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,158
(Kiwi.com)

One-way from

$508
(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 ($157 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 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 abril 30, 2025.

This Ovago deal was found by Cheapflights users on 4/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/252:25 pmORD - BNE
1 stop24h 05mQantas Airways
jue. 12/257:25 pmBNE - ORD
1 stop19h 45mQantas Airways
Deal found 4/28$890
This American Airlines deal was found by Cheapflights users on 4/29. 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.
lun. 12/111:40 amORD - BNE
2 stops25h 20mAmerican Airlines
jue. 12/257:25 pmBNE - ORD
1 stop19h 45mAmerican Airlines
Deal found 4/29$927
This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/17:03 pmORD - BNE
2 stops24h 07mFiji Airways
sáb. 11/1511:25 amBNE - ORD
2 stops23h 55mFiji Airways
Deal found 4/28$1,137
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
jue. 6/53:17 pmORD - SYD
2 stops32h 23mMultiple Airlines
jue. 6/125:45 pmSYD - ORD
1 stop28h 06mMultiple Airlines
Deal found 4/29$1,158
This Fiji Airways deal was found by Cheapflights users on 4/28. 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 Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/146:20 pmORD - CNS
2 stops26h 20mMultiple Airlines
sáb. 10/2512:40 pmCNS - ORD
2 stops25h 12mMultiple Airlines
Deal found 4/28$1,171
This Gurufare deal was found by Cheapflights users on 4/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/313:07 pmORD - BNE
1 stop24h 23mMultiple Airlines
vie. 11/1412:10 amBNE - ORD
1 stop28h 50mMultiple Airlines
Deal found 4/28$1,171
This KAYAK deal was found by Cheapflights users on 4/29. 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.
mar. 12/22:25 pmORD - SYD
2 stops27h 25mQantas Airways
dom. 12/216:05 amSYD - ORD
2 stops28h 26mQantas Airways
Deal found 4/29$1,180
This CrystalTravel deal was found by Cheapflights users on 4/28. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/215:45 pmORD - SYD
1 stop24h 40mANA
vie. 10/3112:25 pmSYD - ORD
2 stops32h 38mANA
Deal found 4/28$1,182
This KAYAK deal was found by Cheapflights users on 4/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/41:23 pmORD - MEL
2 stops28h 57mQantas Airways
mar. 11/183:05 pmMEL - ORD
2 stops24h 55mQantas Airways
Deal found 4/28$1,201
This Air Canada deal was found by Cheapflights users on 4/29. 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.
sáb. 11/229:00 amORD - BNE
2 stops31h 40mAir Canada
sáb. 11/2910:45 amBNE - ORD
1 stop19h 54mAir Canada
Deal found 4/29$1,202
This StudentUniverse deal was found by Cheapflights users on 4/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/912:54 pmORD - SYD
2 stops28h 51mAir New Zealand
dom. 8/1711:50 amSYD - ORD
2 stops26h 09mAir New Zealand
Deal found 4/28$1,240
This StudentUniverse deal was found by Cheapflights users on 4/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/22:25 pmORD - MEL
2 stops29h 25mAir New Zealand
lun. 9/1512:05 pmMEL - ORD
2 stops26h 10mAir New Zealand
Deal found 4/28$1,265

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 abril 30, 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

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

jue. 6/5

3:17 pm-2:40 pm

2 stops32h 23m

Sydney Kingsford Smith

jue. 6/12

5:45 pm-6:51 am

1 stop28h 06m

$1,158

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

mar. 9/2

2:25 pm-10:50 am

2 stops29h 25m

Melbourne

lun. 9/15

12:05 pm-11:15 pm

2 stops26h 10m

$1,265

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

lun. 7/7

3:35 pm-5:10 pm

2 stops34h 35m

Sydney Kingsford Smith

mié. 7/23

9:55 am-10:59 pm

2 stops28h 04m

$1,284

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

mié. 10/22

11:45 pm-8:25 pm

2 stops52h 40m

Melbourne

mié. 11/12

8:40 pm-10:10 am

2 stops54h 30m

$1,310

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mié. 5/7

4:00 pm-10:50 am

1 stop27h 50m

Sydney Kingsford Smith

mié. 5/21

9:50 pm-2:25 pm

1 stop31h 35m

$1,319

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

jue. 5/15

11:45 am-11:30 am

3 stops32h 45m

Melbourne

vie. 5/23

1:35 pm-6:42 am

2 stops32h 07m

$1,319

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

lun. 5/19

6:59 pm-10:35 am

2 stops24h 36m

Brisbane

jue. 10/9

11:40 am-11:31 pm

2 stops26h 51m

$1,325

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

lun. 8/4

8:50 am-6:45 am

1 stop30h 55m

Melbourne

mié. 8/20

3:05 pm-8:57 pm

1 stop20h 52m

$1,342

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mié. 7/2

6:53 pm-7:05 am

1 stop21h 12m

Sydney Kingsford Smith

mié. 8/13

12:10 pm-5:15 pm

1 stop20h 05m

$1,349

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mar. 5/6

6:58 pm-7:45 pm

2 stops33h 47m

Sydney Kingsford Smith

mar. 5/27

9:40 pm-5:02 pm

2 stops34h 22m

$1,364

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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, March is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $1,043). 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 abril 30, 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 abril 30, 2025.
Read reviews from past customers who have flown Air Tahiti Nui, EVA Air and Korean Air 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

Food

7.8

Entertainment

7.3

Crew

9.1

Boarding

8.7

Overall

8.8

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

Food

7.8

Entertainment

7.3

Crew

9.1

Boarding

8.7

Overall

8.8

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
1,186 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Boarding

8.7

Overall

8.8

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.
Korean Air
8.4
Very good
1,066 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Boarding

8.7

Overall

8.8

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
1,459 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Boarding

8.7

Overall

8.8

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
852 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Boarding

8.7

Overall

8.8

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 $662. However, be on the lookout for offers from Alaska Airlines and Qantas Airways, 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, March is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $1,043). 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.

See more FAQs

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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 abril 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$630Average$1,247FlexibilityNo cancel feeOn-time74%
ANACheapest$679Average$1,011FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$679Average$940FlexibilityNo cancel feeOn-time71%
DeltaCheapest$852Average$981FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$953Average$1,335FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$1,021Average$1,477FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,164Average$1,615FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$1,235Average$1,728FlexibilityNo cancel feeOn-time78%
Cathay PacificCheapest$1,305Average$1,524FlexibilityNo cancel feeOn-time72%
Singapore AirlinesCheapest$1,421Average$1,706FlexibilityNo cancel feeOn-time81%

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