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$502+ Cheap flights from Chicago (CHI) 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SYD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Chicago to Australia

Cheapest flights from Chicago to Australia
Explore the most affordable flight options available from Chicago to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:35 pm
ORD
-
BNE
1 stop25h 10m
Multiple Airlines
Tue 3/36:10 am
BNE
-
ORD
2 stops24h 31m
Multiple Airlines
Deal found 1/28$832
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:35 pm
ORD
-
BNE
2 stops29h 50m
Multiple Airlines
Fri 3/610:45 am
BNE
-
ORD
1 stop19h 56m
Multiple Airlines
Deal found 1/28$869
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/46:40 pm
ORD
-
MEL
2 stops27h 55m
Qantas Airways
Tue 2/1012:00 pm
MEL
-
ORD
1 stop20h 57m
Qantas Airways
Deal found 1/27$935
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/96:40 pm
ORD
-
MEL
2 stops27h 55m
Qantas Airways
Sat 2/2812:00 pm
MEL
-
ORD
1 stop28h 55m
Qantas Airways
Deal found 1/28$936
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/172:33 pm
ORD
-
SYD
1 stop25h 27m
Qantas Airways
Wed 3/47:05 am
SYD
-
ORD
2 stops24h 48m
Qantas Airways
Deal found 1/27$942
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/76:40 pm
ORD
-
MEL
2 stops27h 55m
Qantas Airways
Sat 2/2112:00 pm
MEL
-
ORD
1 stop26h 35m
Qantas Airways
Deal found 1/26$945
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/86:40 pm
ORD
-
MEL
2 stops27h 55m
Qantas Airways
Sat 2/2112:00 pm
MEL
-
ORD
1 stop28h 55m
Qantas Airways
Deal found 1/28$946
This Air Canada deal was found by Cheapflights users on 1/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:35 pm
ORD
-
BNE
1 stop25h 10m
Air Canada
Wed 3/119:45 am
BNE
-
ORD
1 stop19h 56m
Air Canada
Deal found 1/27$949
This Air Canada deal was found by Cheapflights users on 1/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/223:35 pm
ORD
-
BNE
1 stop25h 10m
Air Canada
Wed 3/119:45 am
BNE
-
ORD
1 stop19h 56m
Air Canada
Deal found 1/27$951
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:40 pm
ORD
-
SYD
2 stops27h 10m
Qantas Airways
Sat 5/169:10 am
SYD
-
ORD
1 stop23h 36m
Qantas Airways
Deal found 1/27$953
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:40 pm
ORD
-
SYD
2 stops27h 10m
Qantas Airways
Sun 2/2211:20 am
SYD
-
ORD
1 stop20h 33m
Qantas Airways
Deal found 1/28$954
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/288:21 pm
ORD
-
MEL
2 stops42h 59m
Qantas Airways
Wed 3/1112:00 pm
MEL
-
ORD
1 stop21h 46m
Qantas Airways
Deal found 1/26$956

Find flight deals from Chicago to Australia

Keep the following information in mind while searching for Chicago to Australia flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$832
(Expedia)

One-way from

$502
(Kiwi.com)

Popular in

December

Cheapest in

June

Average price

$1,364
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 (CHI) to Australia
Search Deals
One-way flight from Chicago (CHI) to Australia
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($235 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago 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 January 29, 2026.
Use the filters below to find and compare flights from Chicago to Australia that are best for you.

Fly from

Chicago

Fly to

Australia

Route

Depart

Return

Price

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/24

3:35 pm-8:45 am

1 stop25h 10m

Brisbane

Tue 3/3

6:10 am-2:41 pm

2 stops24h 31m

$832

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 3/2

3:35 pm-1:25 pm

2 stops29h 50m

Brisbane

Fri 3/6

10:45 am-2:41 pm

1 stop19h 56m

$869

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/9

6:40 pm-3:35 pm

2 stops27h 55m

Melbourne

Sat 2/28

12:00 pm-11:55 pm

1 stop28h 55m

$936

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/24

7:15 am-8:45 am

2 stops33h 30m

Brisbane

Wed 3/11

9:45 am-5:48 pm

2 stops23h 03m

$961

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 2/22

12:50 pm-8:45 am

2 stops27h 55m

Brisbane

Wed 3/11

9:45 am-5:48 pm

2 stops23h 03m

$962

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Thu 2/26

4:45 pm-7:30 am

2 stops46h 45m

Brisbane

Thu 3/5

7:40 pm-11:47 pm

1 stop20h 07m

$972

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 2/28

2:08 pm-5:10 pm

2 stops35h 02m

Brisbane

Mon 3/9

7:40 pm-11:47 pm

1 stop19h 07m

$972

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Fri 2/27

4:45 pm-7:30 am

2 stops46h 45m

Brisbane

Fri 3/6

7:40 pm-2:53 pm

1 stop35h 13m

$980

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/24

2:33 pm-5:00 am

1 stop22h 27m

Brisbane

Tue 3/3

7:40 pm-11:47 pm

1 stop20h 07m

$1,014

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/24

1:12 pm-1:30 pm

3 stops32h 18m

Brisbane

Tue 3/3

6:05 am-2:41 pm

2 stops24h 36m

$1,017

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 60 results
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Best time to book a flight from Chicago to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Chicago 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 to Australia

What is the cheapest month to book a flight from Chicago to Australia?

Currently, August is the cheapest month in which you can book a flight from Chicago to Australia (average of $198). Flying from Chicago to Australia in October is currently the most expensive (average of $833). 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.

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 January 29, 2026.
See what other customers who have flown with Air New Zealand, Qantas Airways, and United Airlines from Chicago to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very good
577 reviews

Boarding

8.2

Food

7.4

Overall

8.0

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air New Zealand
8.0
Very good
577 reviews
Air New Zealand
8.0
Very good
577 reviews

Boarding

8.2

Food

7.4

Overall

8.0

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Qantas Airways
7.5
Good
981 reviews
Air New Zealand
8.0
Very good
577 reviews

Boarding

8.2

Food

7.4

Overall

8.0

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
United Airlines
7.4
Good
9,215 reviews
Air New Zealand
8.0
Very good
577 reviews

Boarding

8.2

Food

7.4

Overall

8.0

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
American Airlines
7.2
Good
11,206 reviews
Air New Zealand
8.0
Very good
577 reviews

Boarding

8.2

Food

7.4

Overall

8.0

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air Canada
7.1
Good
10,667 reviews
Air New Zealand
8.0
Very good
577 reviews

Boarding

8.2

Food

7.4

Overall

8.0

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

Related info for your journey

Find useful and relevant information for your journey from Chicago 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 to Australia?

    There are many flights that can get you from Chicago to Australia in 27h 55m. Fly via Qantas Airways, Air Canada, or Delta to get the fastest option. The distance from Chicago to Australia is about 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 to Australia one-way?

    The cheapest airlines for a one-way flight from Chicago to Australia are ANA ($304), Qantas Airways ($404), and American Airlines ($427).

  • What are the most popular routes from Chicago to Australia?

    While some choose either Chicago O'Hare Intl - Melbourne or Chicago Midway - Sydney Kingsford Smith, Chicago O'Hare Intl - Sydney Kingsford Smith is the most popular route from Chicago to Australia.

  • Can I find deals for flights from Chicago to Australia that include hotel bookings?

    Yes. In addition to deals on Chicago to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Australia.

  • Can I find deals for business class flights from Chicago to Australia?

    Yes. Cheapflights offers flight deals from Chicago 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 to Australia?

    Currently, August is the cheapest month in which you can book a flight from Chicago to Australia (average of $198). Flying from Chicago to Australia in October is currently the most expensive (average of $833). 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

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Alternative routes for Chicago 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 Chicago to Australia

Discover the top 10 airlines that operate flights from Chicago 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$675Average$1,503FlexibilityNo cancel feeOn-time74%
ANACheapest$703Average$1,237FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$796Average$874FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$796Average$1,422FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$851Average$1,210FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$870Average$1,664FlexibilityNo cancel feeOn-time69%
DeltaCheapest$935Average$1,034FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$1,217Average$1,489FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,229Average$2,092FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,418Average$1,773FlexibilityNo cancel feeOn-time72%

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