Australia

$527+ 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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Oct 15 — Oct 221
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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 September 15, 2025.

Round-trip from

$1,071
(Trip.com)

One-way from

$527
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$999
From Chicago O'Hare Intl to Australia
One-way flight from Chicago O'Hare Intl to Australia
Highest demand for flights based on searches. 15% potential increase in price ($184 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
Average for round-trip flights in September 2025

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 September 15, 2025.

This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:35 pmORD - PER
2 stops47h 45mMultiple Airlines
Thu 11/65:35 amPER - ORD
2 stops45h 20mMultiple Airlines
Deal found 9/15$1,071
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2012:28 pmORD - SYD
2 stops27h 37mMultiple Airlines
Sun 11/22:05 pmSYD - ORD
2 stops27h 06mMultiple Airlines
Deal found 9/15$1,075
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/275:05 amORD - SYD
2 stops35h 55mMultiple Airlines
Sun 11/92:05 pmSYD - ORD
2 stops27h 06mMultiple Airlines
Deal found 9/15$1,105
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:30 amORD - MEL
2 stops38h 15mMultiple Airlines
Thu 11/62:15 pmMEL - ORD
2 stops25h 45mMultiple Airlines
Deal found 9/15$1,135
This lol.travel deal was found by Cheapflights users on 9/13. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/34:25 pmORD - SYD
1 stop25h 05mANA
Tue 11/1812:25 pmSYD - ORD
2 stops33h 51mANA
Deal found 9/13$1,161
This Trip.com deal was found by Cheapflights users on 9/14. 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 10/267:25 amORD - ADL
2 stops36h 00mMultiple Airlines
Fri 11/1411:55 amADL - ORD
2 stops27h 35mMultiple Airlines
Deal found 9/14$1,164
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 10/69:48 amORD - SYD
3 stops34h 57mMultiple Airlines
Mon 10/206:00 amSYD - ORD
3 stops34h 17mMultiple Airlines
Deal found 9/15$1,166
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:25 amORD - SYD
2 stops37h 20mMultiple Airlines
Sat 11/12:30 pmSYD - ORD
2 stops24h 30mMultiple Airlines
Deal found 9/15$1,187
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 11/311:45 amORD - SYD
3 stops31h 45mMultiple Airlines
Sun 11/162:00 pmSYD - ORD
3 stops33h 25mMultiple Airlines
Deal found 9/15$1,204
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:00 amORD - SYD
2 stops31h 25mMultiple Airlines
Sat 11/15:45 pmSYD - ORD
1 stop21h 15mMultiple Airlines
Deal found 9/14$1,205
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:00 amORD - SYD
2 stops31h 30mMultiple Airlines
Fri 10/246:45 pmSYD - ORD
1 stop21h 14mMultiple Airlines
Deal found 9/14$1,209
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2910:42 amORD - SYD
2 stops29h 48mMultiple Airlines
Tue 10/710:10 amSYD - ORD
2 stops29h 43mMultiple Airlines
Deal found 9/15$1,210

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 September 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

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 11/3

4:25 pm-10:30 am

1 stop25h 05m

Sydney Kingsford Smith

Tue 11/18

12:25 pm-5:16 am

2 stops33h 51m

$1,161

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 10/26

7:25 am-10:55 am

2 stops36h 00m

Adelaide

Fri 11/14

11:55 am-11:00 pm

2 stops27h 35m

$1,164

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 11/3

1:49 pm-12:30 pm

2 stops29h 41m

Sydney Kingsford Smith

Tue 11/18

2:10 pm-7:40 pm

2 stops22h 30m

$1,340

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 10/30

7:05 pm-1:00 pm

2 stops25h 55m

Sydney Kingsford Smith

Thu 11/6

2:00 pm-9:24 pm

2 stops24h 24m

$1,368

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 11/6

6:03 pm-1:00 pm

2 stops25h 57m

Sydney Kingsford Smith

Tue 11/11

2:10 pm-7:40 pm

2 stops22h 30m

$1,388

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 9/23

6:30 pm-10:10 pm

2 stops36h 40m

Sydney Kingsford Smith

Thu 10/23

2:15 pm-12:29 am

2 stops26h 14m

$1,404

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 9/20

6:30 pm-10:10 pm

2 stops36h 40m

Sydney Kingsford Smith

Tue 10/21

6:00 am-9:14 pm

2 stops31h 14m

$1,408

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 9/20

6:30 pm-10:10 pm

2 stops36h 40m

Sydney Kingsford Smith

Fri 10/24

6:00 am-12:29 am

2 stops34h 29m

$1,408

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 11/9

6:50 pm-12:00 pm

1 stop27h 10m

Perth

Thu 11/20

10:45 pm-2:30 pm

1 stop29h 45m

$1,434

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 11/22

4:57 pm-9:50 pm

2 stops35h 53m

Sydney Kingsford Smith

Tue 12/9

2:10 pm-9:25 pm

2 stops24h 15m

$1,436

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 $1,032). Flying from Chicago O'Hare Intl Airport to Australia in December is currently the most expensive (average of $1,627). 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 September 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.

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 September 15, 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.

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

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!!

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

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!!

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

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!!

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

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!!

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

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!!

Entertainment

7.4

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.5

Boarding

8.1

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.
  • 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 25h 05m. Fly via ANA, Fiji Airways, or Qatar Airways to get the fastest option. Chicago O'Hare Intl Airport and Australia are separated by a distance of 9228 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 Fiji Airways, with whom users have recently found tickets for as low as $723. However, be on the lookout for offers from United Airlines and ANA, 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?

  • 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 $1,032). Flying from Chicago O'Hare Intl Airport to Australia in December is currently the most expensive (average of $1,627). 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.

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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$647Average$1,358FlexibilityNo cancel feeOn-time74%
ANACheapest$679Average$1,186FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$679Average$938FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$772Average$1,426FlexibilityNo cancel feeOn-time74%
DeltaCheapest$846Average$1,034FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$872Average$1,317FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,169Average$1,561FlexibilityNo cancel feeOn-time69%
Qatar AirwaysCheapest$1,229Average$1,331FlexibilityNo cancel feeOn-time68%
Air New ZealandCheapest$1,264Average$1,443FlexibilityNo cancel feeOn-time78%
Cathay PacificCheapest$1,468Average$2,048FlexibilityNo cancel feeOn-time72%

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