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$415+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This Ovago deal was found by Cheapflights users on 12/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:17 pmORD - MEL
1 stop22h 13mQantas Airways
Tue 1/134:40 pmMEL - ORD
2 stops41h 09mQantas Airways
Deal found 12/2$974
This KAYAK deal was found by Cheapflights users on 12/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:17 pmORD - MEL
1 stop22h 13mQantas Airways
Tue 1/134:40 pmMEL - ORD
2 stops41h 09mQantas Airways
Deal found 12/2$979
This oojo deal was found by Cheapflights users on 12/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:34 pmORD - SYD
1 stop23h 26mQantas Airways
Fri 1/165:50 pmSYD - ORD
2 stops38h 07mQantas Airways
Deal found 12/2$1,004
This oojo deal was found by Cheapflights users on 12/4. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:46 pmORD - MEL
1 stop39h 29mQantas Airways
Wed 1/144:40 pmMEL - ORD
2 stops38h 15mQantas Airways
Deal found 12/4$1,006
This FlightHub deal was found by Cheapflights users on 12/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:17 pmORD - SYD
1 stop21h 43mQantas Airways
Tue 12/1611:20 amSYD - ORD
1 stop21h 42mQantas Airways
Deal found 12/3$1,219
This Priceline deal was found by Cheapflights users on 12/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:17 pmORD - SYD
1 stop21h 43mQantas Airways
Sun 12/1411:20 amSYD - ORD
1 stop21h 47mQantas Airways
Deal found 12/3$1,232
This American Airlines deal was found by Cheapflights users on 12/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:25 pmORD - SYD
2 stops22h 35mAmerican Airlines
Sun 12/1411:20 amSYD - ORD
1 stop22h 34mAmerican Airlines
Deal found 12/3$1,237
This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:45 amORD - SYD
1 stop28h 15mQantas Airways
Wed 12/1011:20 amSYD - ORD
1 stop23h 32mQantas Airways
Deal found 12/2$1,242
This United Airlines deal was found by Cheapflights users on 12/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:17 pmORD - MEL
1 stop23h 43mUnited Airlines
Wed 1/141:00 pmMEL - ORD
1 stop22h 48mUnited Airlines
Deal found 12/2$1,243
This United Airlines deal was found by Cheapflights users on 12/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:12 pmORD - MEL
1 stop44h 18mUnited Airlines
Wed 1/141:00 pmMEL - ORD
1 stop22h 48mUnited Airlines
Deal found 12/2$1,253
This American Airlines deal was found by Cheapflights users on 12/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:25 pmORD - SYD
2 stops22h 35mAmerican Airlines
Wed 12/1011:20 amSYD - ORD
1 stop23h 32mAmerican Airlines
Deal found 12/2$1,287
This United Airlines deal was found by Cheapflights users on 12/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:35 pmORD - MEL
1 stop22h 25mUnited Airlines
Wed 1/1411:30 amMEL - ORD
1 stop20h 20mUnited Airlines
Deal found 12/3$1,293

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 December 4, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$905
(CrystalTravel)

One-way from

$415
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,349
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
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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 December 4, 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

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 1/28

3:35 pm-8:45 am

1 stop25h 10m

Brisbane

Sun 2/8

10:45 am-5:08 pm

2 stops46h 23m

$953

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/10

8:45 am-8:45 am

2 stops32h 00m

Brisbane

Sun 2/22

10:45 am-2:41 pm

1 stop19h 56m

$953

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/3

5:52 pm-8:45 am

2 stops46h 53m

Brisbane

Tue 2/10

10:45 am-2:41 pm

1 stop19h 56m

$1,045

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 1/18

3:35 pm-4:20 pm

2 stops32h 15m

Adelaide

Sun 1/25

6:10 am-2:41 pm

2 stops25h 01m

$1,051

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 3/1

3:35 pm-8:45 am

1 stop25h 10m

Brisbane

Thu 3/5

10:45 am-4:45 pm

2 stops22h 00m

$1,092

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sat 1/17

11:56 am-5:00 am

1 stop24h 04m

Melbourne

Sat 1/24

12:00 pm-4:49 pm

1 stop21h 49m

$1,131

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sat 2/21

11:45 am-5:00 am

1 stop24h 15m

Melbourne

Sat 2/28

4:05 pm-9:33 pm

1 stop22h 28m

$1,131

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Fri 2/20

2:00 pm-9:30 am

1 stop26h 30m

Melbourne

Wed 3/18

12:00 pm-4:44 pm

1 stop20h 44m

$1,132

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Wed 2/25

1:15 pm-5:00 am

1 stop22h 45m

Melbourne

Fri 3/6

4:05 pm-9:19 pm

1 stop22h 14m

$1,132

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Thu 1/15

2:15 pm-5:00 am

1 stop22h 45m

Brisbane

Sat 1/31

7:40 pm-11:59 pm

1 stop20h 19m

$1,135

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

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, 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 October is currently the most expensive (average of $832). 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 December 4, 2025.

One of the essential ways to save on airfare from Chicago O'Hare Intl Airport to Australia is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 20% on airfare.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Australia?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Australia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Australia flight should consider departing on Friday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 4, 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
8.1
Very good
209 reviews

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.1
Very good
209 reviews
Fiji Airways
8.1
Very good
209 reviews

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Qantas Airways
7.5
Good
947 reviews
Fiji Airways
8.1
Very good
209 reviews

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
United Airlines
7.4
Good
9,066 reviews
Fiji Airways
8.1
Very good
209 reviews

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
American Airlines
7.2
Good
11,045 reviews
Fiji Airways
8.1
Very good
209 reviews

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Air Canada
7.1
Good
10,500 reviews
Fiji Airways
8.1
Very good
209 reviews

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

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 04m. Fly via Air Canada, Qantas Airways, or United Airlines to get the fastest option. Chicago O'Hare Intl Airport and Australia are separated by a distance of 9660 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 ANA, with whom users have recently found tickets for as low as $304. However, be on the lookout for offers from Qantas Airways 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 October is currently the most expensive (average of $832). 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$675Average$1,188FlexibilityNo cancel feeOn-time74%
ANACheapest$679Average$1,196FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$679Average$929FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$772Average$1,422FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$870Average$1,683FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$872Average$1,255FlexibilityNo cancel feeOn-time67%
DeltaCheapest$935Average$1,034FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,229Average$1,775FlexibilityNo cancel feeOn-time68%
Air New ZealandCheapest$1,264Average$1,531FlexibilityNo cancel feeOn-time78%
Cathay PacificCheapest$1,418Average$1,835FlexibilityNo cancel feeOn-time72%

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