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$468+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$835
(Air Canada)

One-way from

$468
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$857
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. 15% potential increase in price ($181 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This Air Canada deal was found by Cheapflights users on 8/12. 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 11/118:45 amORD - SYD
2 stops31h 50mAir Canada
Wed 11/1911:20 amSYD - ORD
2 stops37h 40mAir Canada
Deal found 8/12$835
This Air Canada deal was found by Cheapflights users on 8/12. 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.
Sun 11/97:15 amORD - SYD
3 stops33h 20mAir Canada
Tue 11/1811:20 amSYD - ORD
2 stops37h 40mAir Canada
Deal found 8/12$842
This Air Canada deal was found by Cheapflights users on 8/12. 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 10/213:40 pmORD - SYD
1 stop24h 40mAir Canada
Fri 10/3110:20 amSYD - ORD
1 stop20h 21mAir Canada
Deal found 8/12$898
This Air Canada deal was found by Cheapflights users on 8/12. 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 11/173:40 pmORD - MEL
2 stops30h 55mAir Canada
Sun 11/306:50 pmMEL - ORD
2 stops36h 51mAir Canada
Deal found 8/12$912
This Air Canada deal was found by Cheapflights users on 8/12. 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 11/111:10 pmORD - MEL
2 stops32h 05mAir Canada
Thu 11/208:10 amMEL - ORD
2 stops23h 31mAir Canada
Deal found 8/12$933
This Air Canada deal was found by Cheapflights users on 8/12. 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 11/48:45 amORD - SYD
2 stops31h 50mAir Canada
Tue 11/1811:20 amSYD - ORD
2 stops37h 40mAir Canada
Deal found 8/12$935
This Air Canada deal was found by Cheapflights users on 8/12. 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.
Sat 10/258:47 amORD - SYD
2 stops31h 48mAir Canada
Fri 10/3110:20 amSYD - ORD
1 stop20h 21mAir Canada
Deal found 8/12$960
This Air Canada deal was found by Cheapflights users on 8/12. 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 10/213:45 pmORD - CBR
2 stops34h 05mAir Canada
Sat 11/86:30 amCBR - ORD
2 stops25h 11mAir Canada
Deal found 8/12$962
This Trip.com deal was found by Cheapflights users on 8/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:30 amORD - MEL
2 stops38h 55mMultiple Airlines
Sun 10/52:30 pmMEL - ORD
2 stops24h 13mMultiple Airlines
Deal found 8/14$968
This Air Canada deal was found by Cheapflights users on 8/12. 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 9/93:45 pmORD - MEL
2 stops28h 50mAir Canada
Tue 9/166:00 amMEL - ORD
2 stops24h 00mAir Canada
Deal found 8/12$970
This Air Canada deal was found by Cheapflights users on 8/12. 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.
Fri 11/213:40 pmORD - MEL
2 stops30h 05mAir Canada
Mon 12/16:50 pmMEL - ORD
2 stops38h 54mAir Canada
Deal found 8/12$975
This Air Canada deal was found by Cheapflights users on 8/12. 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 11/32:00 pmORD - MEL
3 stops32h 35mAir Canada
Sun 11/167:10 amMEL - ORD
2 stops24h 31mAir Canada
Deal found 8/12$976

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 August 14, 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

Tue 11/11

8:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 11/18

11:20 am-2:41 pm

1 stop20h 21m

$835

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 11/11

3:40 pm-9:35 am

1 stop24h 55m

Sydney Kingsford Smith

Tue 11/25

11:20 am-5:10 pm

2 stops46h 50m

$835

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 11/11

3:40 pm-9:35 am

1 stop24h 55m

Sydney Kingsford Smith

Wed 11/19

11:20 am-4:44 pm

1 stop22h 24m

$835

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/9

1:00 pm-2:15 pm

2 stops32h 15m

Melbourne

Sun 2/22

7:10 am-2:41 pm

2 stops24h 31m

$870

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sun 2/1

2:00 pm-1:35 pm

3 stops30h 35m

Melbourne

Wed 4/1

6:40 am-2:43 pm

2 stops24h 03m

$876

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 1/14

1:00 pm-3:35 pm

2 stops33h 35m

Melbourne

Wed 1/21

8:10 am-4:38 pm

2 stops25h 28m

$878

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 1/12

1:00 pm-5:40 pm

2 stops35h 40m

Melbourne

Sun 1/25

8:00 am-7:30 pm

3 stops28h 30m

$889

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 10/21

10:40 am-8:20 am

2 stops29h 40m

Sydney Kingsford Smith

Fri 10/31

10:20 am-5:10 pm

2 stops22h 50m

$898

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 11/17

3:40 pm-3:35 pm

2 stops30h 55m

Melbourne

Sun 11/30

6:50 pm-2:41 pm

2 stops36h 51m

$912

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Tue 1/20

3:40 pm-2:15 pm

2 stops29h 35m

Melbourne

Fri 1/30

8:00 am-9:59 pm

3 stops30h 59m

$943

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

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 $1,031). Flying from Chicago O'Hare Intl Airport to Australia in December is currently the most expensive (average of $1,619). 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 August 14, 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.

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 August 14, 2025.
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
204 reviews

Crew

8.5

Boarding

8.1

Food

7.5

Overall

8.0

Entertainment

7.4

Comfort

8.0

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Fiji Airways
8.0
Very good
204 reviews
Fiji Airways
8.0
Very good
204 reviews

Crew

8.5

Boarding

8.1

Food

7.5

Overall

8.0

Entertainment

7.4

Comfort

8.0

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Qantas Airways
7.5
Good
895 reviews
Fiji Airways
8.0
Very good
204 reviews

Crew

8.5

Boarding

8.1

Food

7.5

Overall

8.0

Entertainment

7.4

Comfort

8.0

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
United Airlines
7.4
Good
8,916 reviews
Fiji Airways
8.0
Very good
204 reviews

Crew

8.5

Boarding

8.1

Food

7.5

Overall

8.0

Entertainment

7.4

Comfort

8.0

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
American Airlines
7.2
Good
10,000 reviews
Fiji Airways
8.0
Very good
204 reviews

Crew

8.5

Boarding

8.1

Food

7.5

Overall

8.0

Entertainment

7.4

Comfort

8.0

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Air Canada
7.1
Good
9,949 reviews
Fiji Airways
8.0
Very good
204 reviews

Crew

8.5

Boarding

8.1

Food

7.5

Overall

8.0

Entertainment

7.4

Comfort

8.0

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

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 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 $1,031). Flying from Chicago O'Hare Intl Airport to Australia in December is currently the most expensive (average of $1,619). 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$647Average$1,191FlexibilityNo cancel feeOn-time74%
ANACheapest$679Average$1,177FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$679Average$936FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$772Average$1,432FlexibilityNo cancel feeOn-time74%
DeltaCheapest$853Average$983FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$952Average$1,305FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,164Average$1,547FlexibilityNo cancel feeOn-time69%
Qatar AirwaysCheapest$1,229Average$1,477FlexibilityNo cancel feeOn-time68%
Air New ZealandCheapest$1,275Average$1,501FlexibilityNo cancel feeOn-time78%
Cathay PacificCheapest$1,470Average$1,566FlexibilityNo cancel feeOn-time72%

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