Australia

$516+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SYD
mai 28 — juin 41
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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 avril 28, 2026.

This Trip.com deal was found by Cheapflights users on 4/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/1411:49 am
ORD
-
SYD
3 stops33h 01m
Multiple Airlines
dim. 9/201:15 pm
SYD
-
ORD
3 stops36h 33m
Multiple Airlines
Deal found 4/26$1,178
This Trip.com deal was found by Cheapflights users on 4/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 5/276:55 am
ORD
-
MEL
3 stops38h 10m
Multiple Airlines
dim. 6/71:30 pm
MEL
-
ORD
3 stops46h 02m
Multiple Airlines
Deal found 4/26$1,189
This Trip.com deal was found by Cheapflights users on 4/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/32:00 pm
ORD
-
SYD
2 stops41h 10m
Multiple Airlines
sam. 5/96:00 am
SYD
-
ORD
3 stops45h 04m
Multiple Airlines
Deal found 4/26$1,228
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/265:45 pm
ORD
-
SYD
1 stop24h 40m
ANA
mar. 9/88:55 pm
SYD
-
ORD
1 stop26h 45m
ANA
Deal found 4/28$1,231
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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.
mer. 8/55:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
dim. 8/3011:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 4/27$1,240
This CrystalTravel deal was found by Cheapflights users on 4/25. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/147:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
ven. 8/2811:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 4/25$1,247
This CrystalTravel deal was found by Cheapflights users on 4/24. 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.
sam. 8/155:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
sam. 8/2911:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 4/24$1,248
This CrystalTravel deal was found by Cheapflights users on 4/26. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/217:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
ven. 8/2811:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 4/26$1,251
This CrystalTravel deal was found by Cheapflights users on 4/27. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/195:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
dim. 11/229:45 pm
SYD
-
ORD
1 stop26h 35m
ANA
Deal found 4/27$1,254
This Gotogate deal was found by Cheapflights users on 4/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/255:45 pm
ORD
-
SYD
1 stop24h 40m
ANA
lun. 9/711:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 4/27$1,257
This Trip.com deal was found by Cheapflights users on 4/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/32:00 pm
ORD
-
MEL
2 stops31h 25m
Multiple Airlines
sam. 5/91:30 pm
MEL
-
ORD
3 stops37h 34m
Multiple Airlines
Deal found 4/26$1,299
This KAYAK deal was found by Cheapflights users on 4/24. 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.
jeu. 9/35:50 pm
ORD
-
MEL
2 stops34h 30m
Multiple Airlines
sam. 9/127:30 am
MEL
-
ORD
2 stops28h 44m
Multiple Airlines
Deal found 4/24$1,322

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 avril 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,178
(Trip.com)

One-way from

$516
(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.
Provider most trusted by Cheapflights users for Chicago (CHI)-Sydney Kingsford Smith flights.
From Chicago (CHI) to Australia
One-way flight from Chicago (CHI) to Australia
Highest demand for flights based on searches. 4% potential increase in price ($60 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($20 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 avril 28, 2026.
Use the filters below to find and compare flights from Chicago 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

lun. 6/8

3:20 pm-9:25 am

2 stops27h 35m

Adelaide

lun. 6/15

7:50 am-7:28 pm

2 stops26h 08m

$1,378

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

jeu. 5/14

7:21 pm-1:40 pm

2 stops27h 49m

Adelaide

sam. 5/23

6:00 am-7:33 pm

2 stops28h 03m

$1,401

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

jeu. 7/2

5:10 pm-11:55 am

2 stops28h 15m

Adelaide

dim. 8/2

6:00 am-6:12 pm

2 stops26h 42m

$1,407

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mar. 9/1

8:42 pm-6:50 pm

2 stops31h 08m

Sydney Kingsford Smith

mar. 9/8

8:45 pm-6:22 am

2 stops24h 37m

$1,410

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

dim. 6/28

6:59 pm-11:55 am

2 stops26h 26m

Adelaide

ven. 7/3

7:45 pm-3:53 pm

2 stops34h 38m

$1,500

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

mar. 6/9

11:05 am-7:05 am

2 stops29h 00m

Brisbane

jeu. 7/9

10:15 am-2:41 pm

1 stop19h 26m

$1,542

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

ven. 7/24

9:13 pm-12:00 pm

2 stops47h 47m

Melbourne

ven. 8/7

9:45 am-6:02 am

1 stop35h 17m

$1,548

ChicagoMelbourne

MDW - MEL

MDWMEL

Chicago Midway

dim. 5/3

6:38 pm-7:50 am

2 stops46h 12m

Melbourne

dim. 5/24

10:00 am-6:33 pm

2 stops23h 33m

$1,587

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

dim. 6/7

7:59 pm-7:50 am

2 stops44h 51m

Melbourne

dim. 6/14

10:00 am-6:59 pm

2 stops23h 59m

$1,587

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

jeu. 6/18

12:56 pm-8:15 am

2 stops28h 19m

Melbourne

sam. 7/4

10:55 am-9:39 pm

2 stops25h 44m

$1,590

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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

How far ahead should I book a flight from Chicago to Australia?

To ensure you get the cheapest price possible for a flight from Chicago to Australia, you should look to book at least 32 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from Chicago to Australia (average of $113). Flying from Chicago to Australia in April is currently the most expensive (average of $716). 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 avril 28, 2026.
See what other customers who have flown with Air New Zealand,Qantas Airways, andUnited 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.

Overall

8.0

Entertainment

7.4

Crew

8.5

Comfort

7.9

Food

7.4

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Overall

8.0

Entertainment

7.4

Crew

8.5

Comfort

7.9

Food

7.4

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Overall

8.0

Entertainment

7.4

Crew

8.5

Comfort

7.9

Food

7.4

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Overall

8.0

Entertainment

7.4

Crew

8.5

Comfort

7.9

Food

7.4

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Overall

8.0

Entertainment

7.4

Crew

8.5

Comfort

7.9

Food

7.4

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Overall

8.0

Entertainment

7.4

Crew

8.5

Comfort

7.9

Food

7.4

Boarding

8.2

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 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 35m. Fly via Qantas Airways, Air Canada, or Delta to get the fastest option. The distance from Chicago to Australia is about 9903 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 Qantas Airways ($441), ANA ($691), and American Airlines ($827).

  • What are the most popular routes 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, November is the cheapest month in which you can book a flight from Chicago to Australia (average of $113). Flying from Chicago to Australia in April is currently the most expensive (average of $716). 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.

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 avril 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$198Average$1,487FlexibilityNo cancel feeOn-time71%
DeltaCheapest$317Average$1,418FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$712Average$1,105FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$716Average$1,212FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$837Average$1,582FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$870Average$1,663FlexibilityNo cancel feeOn-time69%
ANACheapest$1,186Average$1,288FlexibilityNo cancel feeOn-time80%
Air New ZealandCheapest$1,217Average$1,489FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,263Average$1,762FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,418Average$1,890FlexibilityNo cancel feeOn-time72%

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