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$515+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
May 23 — May 301
Sat 5/23
Sat 5/30
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 April 23, 2026.

This Trip.com deal was found by Cheapflights users on 4/19. 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 5/45:20 am
ORD
-
BNE
3 stops38h 15m
Multiple Airlines
Mon 5/1811:55 am
BNE
-
ORD
2 stops33h 44m
Multiple Airlines
Deal found 4/19$1,152
This Trip.com deal was found by Cheapflights users on 4/18. 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 5/166:55 am
ORD
-
SYD
3 stops37h 55m
Multiple Airlines
Mon 6/81:15 pm
SYD
-
ORD
2 stops31h 49m
Multiple Airlines
Deal found 4/18$1,208
This Trip.com deal was found by Cheapflights users on 4/20. 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 5/45:20 am
ORD
-
MEL
3 stops40h 05m
Multiple Airlines
Tue 5/191:25 pm
MEL
-
ORD
3 stops48h 36m
Multiple Airlines
Deal found 4/20$1,213
This Cheapflightsfares deal was found by Cheapflights users on 4/21. 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.
Tue 11/34:25 pm
ORD
-
SYD
1 stop25h 05m
ANA
Tue 11/179:45 pm
SYD
-
ORD
1 stop26h 35m
ANA
Deal found 4/21$1,231
This Cheapflightsfares deal was found by Cheapflights users on 4/21. 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.
Wed 8/55:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
Sun 8/308:55 pm
SYD
-
ORD
2 stops32h 41m
ANA
Deal found 4/21$1,241
This Air Canada deal was found by Cheapflights users on 4/21. 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 11/63:40 pm
ORD
-
SYD
1 stop24h 55m
Air Canada
Fri 11/2011:20 am
SYD
-
ORD
1 stop20h 21m
Air Canada
Deal found 4/21$1,244
This CrystalTravel deal was found by Cheapflights users on 4/21. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:00 pm
ORD
-
SYD
2 stops31h 15m
ANA
Tue 11/179:45 pm
SYD
-
ORD
1 stop26h 35m
ANA
Deal found 4/21$1,251
This Trip.com deal was found by Cheapflights users on 4/20. 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 5/106:50 am
ORD
-
SYD
3 stops38h 00m
Multiple Airlines
Sun 6/71:15 pm
SYD
-
ORD
3 stops48h 58m
Multiple Airlines
Deal found 4/20$1,252
This Trip.com deal was found by Cheapflights users on 4/22. 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 7/309:28 am
ORD
-
SYD
3 stops35h 22m
Multiple Airlines
Thu 8/131:15 pm
SYD
-
ORD
2 stops32h 02m
Multiple Airlines
Deal found 4/22$1,256
This Gotogate deal was found by Cheapflights users on 4/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:45 pm
ORD
-
SYD
1 stop24h 40m
ANA
Mon 9/1411:45 am
SYD
-
ORD
1 stop42h 10m
ANA
Deal found 4/22$1,257
This Trip.com deal was found by Cheapflights users on 4/18. 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 5/35:50 am
ORD
-
MEL
3 stops39h 35m
Multiple Airlines
Sun 5/171:30 pm
MEL
-
ORD
3 stops46h 02m
Multiple Airlines
Deal found 4/18$1,289
This Trip.com deal was found by Cheapflights users on 4/21. 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.
Fri 7/246:55 am
ORD
-
BNE
3 stops36h 40m
Multiple Airlines
Wed 7/2911:35 am
BNE
-
ORD
3 stops50h 39m
Multiple Airlines
Deal found 4/21$1,289

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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,152
(Trip.com)

One-way from

$515
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,441
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. 4% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 April 23, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 5/14

7:21 pm-11:55 am

2 stops26h 04m

Adelaide

Sat 5/23

6:00 am-3:52 pm

2 stops24h 22m

$1,388

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Thu 7/2

5:10 pm-11:55 am

2 stops28h 15m

Adelaide

Sun 8/2

6:00 am-7:58 pm

2 stops28h 28m

$1,407

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 6/29

4:45 pm-7:00 am

1 stop23h 15m

Sydney Kingsford Smith

Tue 7/7

10:20 am-6:46 pm

2 stops23h 26m

$1,422

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 7/8

3:55 pm-6:50 am

2 stops23h 55m

Sydney Kingsford Smith

Wed 7/15

9:15 am-6:57 pm

2 stops24h 42m

$1,422

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 6/1

6:24 am-6:50 am

2 stops33h 26m

Sydney Kingsford Smith

Mon 6/15

9:15 am-5:20 pm

1 stop23h 05m

$1,423
Quickest round-trip

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 5/5

6:20 pm-6:55 am

1 stop21h 35m

Sydney Kingsford Smith

Tue 5/19

10:20 am-5:05 pm

2 stops21h 45m

$1,423

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 5/24

9:25 am-6:50 am

2 stops30h 25m

Sydney Kingsford Smith

Sun 5/31

9:15 am-4:49 pm

2 stops22h 34m

$1,423

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 5/10

2:11 pm-6:50 am

2 stops25h 39m

Sydney Kingsford Smith

Sun 6/7

9:15 am-8:32 pm

2 stops26h 17m

$1,423

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 7/5

9:30 pm-7:00 am

1 stop42h 30m

Sydney Kingsford Smith

Wed 7/29

10:20 am-2:50 pm

1 stop19h 30m

$1,429

ChicagoCanberra

ORD - CBR

ORDCBR

Chicago O'Hare Intl

Tue 5/19

3:45 pm-1:15 pm

2 stops30h 30m

Canberra

Tue 5/26

7:15 am-4:38 pm

2 stops24h 23m

$1,528

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 60 resultsSorted by cheapest first
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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, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $113). Flying from Chicago O'Hare Intl Airport to Australia in February is currently the most expensive (average of $839). 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 April 23, 2026.
Peruse reviews from past customers who have flown with Air New Zealand,Qantas Airways, andUnited 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.
Air New Zealand
8.0
Very good
632 reviews

Overall

8.0

Entertainment

7.4

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air New Zealand
8.0
Very good
632 reviews
Air New Zealand
8.0
Very good
632 reviews

Overall

8.0

Entertainment

7.4

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Qantas Airways
7.5
Good
1,024 reviews
Air New Zealand
8.0
Very good
632 reviews

Overall

8.0

Entertainment

7.4

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
United Airlines
7.4
Good
9,636 reviews
Air New Zealand
8.0
Very good
632 reviews

Overall

8.0

Entertainment

7.4

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
American Airlines
7.1
Good
11,655 reviews
Air New Zealand
8.0
Very good
632 reviews

Overall

8.0

Entertainment

7.4

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air Canada
7.1
Good
10,957 reviews
Air New Zealand
8.0
Very good
632 reviews

Overall

8.0

Entertainment

7.4

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

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 23h 15m. Fly via Qantas Airways, United Airlines, or Delta 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 Qantas Airways, with whom users have recently found tickets for as low as $441. However, be on the lookout for offers from ANA 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 - Melbourne Avalon, 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, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Australia (average of $113). Flying from Chicago O'Hare Intl Airport to Australia in February is currently the most expensive (average of $839). 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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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 April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$198Average$1,487FlexibilityNo cancel feeOn-time71%
DeltaCheapest$317Average$1,467FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$712Average$1,100FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$716Average$1,212FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$837Average$1,581FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$870Average$1,661FlexibilityNo cancel feeOn-time69%
ANACheapest$1,177Average$1,259FlexibilityNo cancel feeOn-time80%
Air New ZealandCheapest$1,217Average$1,489FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,263Average$1,762FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,470Average$1,888FlexibilityNo cancel feeOn-time72%

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