HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$467+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Apr 1 — Apr 81
Tue 4/1
Tue 4/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to Australia with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$875
(Jetabroad)

One-way from

$483
(American Airlines)

Popular in

December

Cheapest in

August

Average price

$907
Provider with most accurate pricing for Chicago (CHI)-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Sydney Kingsford Smith flights.
Search Deals
From Chicago O'Hare Intl to Australia
Search Deals
One-way flight from Chicago O'Hare Intl to Australia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 March 27, 2025.

This Justfly.com deal was found by Cheapflights users on 3/26. 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 3/26$899
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Fri 5/25:30 pmORD - BNE
1 stop20h 55mAmerican Airlines
Wed 5/148:05 pmBNE - ORD
1 stop24h 48mAmerican Airlines
Deal found 3/26$919
This lol.travel deal was found by Cheapflights users on 3/26. 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 5/1910:40 amORD - SYD
2 stops29h 40mAir Canada
Mon 6/29:20 amSYD - ORD
2 stops26h 00mAir Canada
Deal found 3/26$1,000
This Mytrip deal was found by Cheapflights users on 3/26. 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 5/611:53 amORD - SYD
2 stops32h 52mMultiple Airlines
Tue 5/131:15 pmSYD - ORD
2 stops32h 27mMultiple Airlines
Deal found 3/26$1,002
This Mytrip deal was found by Cheapflights users on 3/25. 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 5/69:30 amORD - BNE
3 stops46h 20mMultiple Airlines
Tue 5/1311:40 amBNE - ORD
2 stops34h 02mMultiple Airlines
Deal found 3/25$1,035
This Mytrip deal was found by Cheapflights users on 3/26. 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.
Sat 5/311:53 amORD - MEL
2 stops33h 22mMultiple Airlines
Sat 5/109:25 amMEL - ORD
3 stops41h 11mMultiple Airlines
Deal found 3/26$1,058
This Mytrip deal was found by Cheapflights users on 3/26. 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.
Sat 5/311:53 amORD - ADL
2 stops33h 12mMultiple Airlines
Sat 5/1012:35 pmADL - ORD
3 stops32h 37mMultiple Airlines
Deal found 3/26$1,069
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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 11/15:00 pmORD - SYD
2 stops26h 45mQantas Airways
Sun 11/167:05 amSYD - ORD
2 stops27h 26mQantas Airways
Deal found 3/27$1,106
This Expedia deal was found by Cheapflights users on 3/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:40 amORD - CNS
2 stops34h 40mMultiple Airlines
Tue 11/112:35 pmCNS - ORD
2 stops24h 25mMultiple Airlines
Deal found 3/26$1,170
This Air Canada deal was found by Cheapflights users on 3/26. 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.
Wed 10/223:40 pmORD - AVV
2 stops36h 35mMultiple Airlines
Wed 11/126:00 amAVV - ORD
2 stops27h 38mMultiple Airlines
Deal found 3/26$1,180
This Air Canada deal was found by Cheapflights users on 3/25. 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 6/233:35 pmORD - MEL
2 stops29h 00mAir Canada
Wed 7/166:00 amMEL - ORD
2 stops23h 49mAir Canada
Deal found 3/25$1,191
This StudentUniverse deal was found by Cheapflights users on 3/26. 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.
Tue 4/16:45 pmORD - SYD
2 stops35h 25mFiji Airways
Tue 4/86:15 amSYD - ORD
2 stops30h 00mFiji Airways
Deal found 3/26$1,193

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 March 27, 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

Fri 5/2

5:30 pm-5:25 am

1 stop20h 55m

Brisbane

Wed 5/14

8:05 pm-5:53 am

1 stop24h 48m

$919

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 5/19

10:40 am-7:20 am

2 stops29h 40m

Sydney Kingsford Smith

Mon 6/2

9:20 am-8:20 pm

2 stops26h 00m

$1,000

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 5/6

11:53 am-11:45 am

2 stops32h 52m

Sydney Kingsford Smith

Tue 5/13

1:15 pm-6:42 am

2 stops32h 27m

$1,002

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 5/6

9:30 am-10:50 pm

3 stops46h 20m

Brisbane

Tue 5/13

11:40 am-6:42 am

2 stops34h 02m

$1,035

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sat 5/3

11:53 am-12:15 pm

2 stops33h 22m

Melbourne

Sat 5/10

9:25 am-11:36 am

3 stops41h 11m

$1,058

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sat 5/3

11:53 am-11:35 am

2 stops33h 12m

Adelaide

Sat 5/10

12:35 pm-6:42 am

3 stops32h 37m

$1,069

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 6/3

7:13 pm-10:40 am

2 stops24h 27m

Brisbane

Wed 6/11

12:15 pm-11:35 pm

2 stops26h 20m

$1,154

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 6/23

3:35 pm-11:35 am

2 stops29h 00m

Melbourne

Wed 7/16

6:00 am-2:49 pm

2 stops23h 49m

$1,191

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 8/24

5:45 pm-9:25 am

1 stop24h 40m

Sydney Kingsford Smith

Sun 8/31

11:50 am-5:01 am

2 stops32h 11m

$1,212

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 5/10

6:45 pm-11:45 am

2 stops26h 00m

Sydney Kingsford Smith

Sat 5/17

1:45 pm-8:24 pm

2 stops21h 39m

$1,253

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 60 results
1
2
3
...
6

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 $1,044). 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 March 27, 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 March 27, 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
8.7
Very good
61 reviews

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

Comfort

8.0

Entertainment

7.2

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
8.7
Very good
61 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

Comfort

8.0

Entertainment

7.2

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
1,169 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

Comfort

8.0

Entertainment

7.2

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
8.7
Very good
61 reviews

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

Comfort

8.0

Entertainment

7.2

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
828 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

Comfort

8.0

Entertainment

7.2

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
1,285 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

Comfort

8.0

Entertainment

7.2

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 American Airlines, with whom users have recently found tickets for as low as $483. However, be on the lookout for offers from Fiji Airways 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?

    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 $1,044). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for O'Hare Intl to Australia

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Sydney flights
O'Hare Intl to Auckland flights
O'Hare Intl to Melbourne flights
Midway to Sydney flights
O'Hare Intl to Vaitape flights
O'Hare Intl to Brisbane flights
O'Hare Intl to Papeete flights
O'Hare Intl to Nadi flights
O'Hare Intl to Christchurch flights
O'Hare Intl to Queenstown flights
O'Hare Intl to Tamuning flights
Midway to Papeete flights
O'Hare Intl to Perth flights
O'Hare Intl to Wellington flights
O'Hare Intl to Avalon flights
O'Hare Intl to Canberra flights
O'Hare Intl to Adelaide flights
O'Hare Intl to Cairns flights
O'Hare Intl to Rarotonga flights
Midway to Tamuning flights
O'Hare Intl to Coolangatta flights
Midway to Melbourne flights
O'Hare Intl to Townsville flights
O'Hare Intl to Apia flights
O'Hare Intl to I Fadang flights
O'Hare Intl to Koror flights
O'Hare Intl to Maroochydore flights
O'Hare Intl to Hobart flights
O'Hare Intl to Port Moresby flights
O'Hare Intl to Suva flights
O'Hare Intl to Darwin flights
O'Hare Intl to Hervey Bay flights
O'Hare Intl to Blenheim flights
O'Hare Intl to Launceston flights
O'Hare Intl to Tauranga flights
O'Hare Intl to Nuku‘alofa flights
O'Hare Intl to Broome flights
O'Hare Intl to Temae flights
O'Hare Intl to Rotorua flights
O'Hare Intl to Savusavu flights
O'Hare Intl to Napier flights
O'Hare Intl to Fare flights
O'Hare Intl to Mackay flights
O'Hare Intl to Truk flights
O'Hare Intl to Taupo flights

Top 9 airlines flying from O'Hare Intl to Australia

Discover the top 9 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 March 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$647Average$1,200FlexibilityNo 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$1,375FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$1,138Average$1,408FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$1,164Average$1,631FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$1,204Average$1,512FlexibilityNo cancel feeOn-time78%
Singapore AirlinesCheapest$1,421Average$1,706FlexibilityNo cancel feeOn-time81%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.