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Illinois

$425+ Cheap flights from Australia to Illinois

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Australia to Illinois

Keep the following information in mind while searching for Australia to Illinois flight deals. Data was last updated September 15, 2025.

Round-trip from

$765
(Flightnetwork)

One-way from

$425
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$1,148
From Australia to Illinois
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One-way flight from Australia to Illinois
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Highest demand for flights based on searches. 22% potential increase in price ($296 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Australia to Illinois

Cheapest flights from Australia to Illinois
Explore the most affordable flight options available from Australia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Flightnetwork deal was found by Cheapflights users on 9/14. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:00 amBNE - ORD
2 stops49h 06mAir Canada
Mon 10/203:45 pmORD - BNE
1 stop24h 20mAir Canada
Deal found 9/14$765
This Gotogate deal was found by Cheapflights users on 9/13. 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.
Tue 10/289:45 amBNE - ORD
2 stops24h 45mAir Canada
Tue 11/48:00 amORD - BNE
2 stops32h 45mAir Canada
Deal found 9/13$786
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:20 amBNE - ORD
1 stop19h 40mAir Canada
Tue 10/288:00 amORD - BNE
2 stops32h 45mAir Canada
Deal found 9/13$792
This Air Canada deal was found by Cheapflights users on 9/14. 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 10/1410:20 amBNE - ORD
1 stop19h 40mAir Canada
Tue 10/218:40 amORD - BNE
2 stops31h 25mAir Canada
Deal found 9/14$794
This BestPriceTravel deal was found by Cheapflights users on 9/13. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/269:45 amBNE - ORD
1 stop19h 56mAir Canada
Mon 11/101:19 pmORD - BNE
2 stops27h 26mAir Canada
Deal found 9/13$820
This Air Canada deal was found by Cheapflights users on 9/15. 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.
Thu 12/44:00 pmSYD - STL
2 stops64h 29mAir Canada
Thu 12/111:35 pmSTL - SYD
2 stops24h 20mAir Canada
Deal found 9/15$830
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Thu 12/44:00 pmSYD - STL
2 stops64h 29mAir Canada
Wed 12/101:35 pmSTL - SYD
2 stops48h 20mAir Canada
Deal found 9/13$831
This American Airlines deal was found by Cheapflights users on 9/13. 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 12/511:15 amSYD - STL
2 stops22h 04mAmerican Airlines
Sat 12/136:55 amSTL - SYD
1 stop33h 05mAmerican Airlines
Deal found 9/13$833
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Thu 12/44:00 pmSYD - STL
2 stops61h 39mAir Canada
Mon 12/84:05 pmSTL - SYD
2 stops48h 30mAir Canada
Deal found 9/13$836
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 10/1311:55 amMEL - STL
2 stops26h 05mUnited Airlines
Mon 10/203:23 pmSTL - MEL
2 stops25h 52mUnited Airlines
Deal found 9/15$844
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 12/111:50 amSYD - STL
1 stop39h 14mUnited Airlines
Tue 12/94:45 pmSTL - SYD
2 stops23h 20mUnited Airlines
Deal found 9/15$850
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 12/112:10 pmSYD - STL
2 stops43h 15mUnited Airlines
Mon 12/81:35 pmSTL - SYD
2 stops26h 30mUnited Airlines
Deal found 9/15$851

Cheapflights Fare Finder

 
Customize your flight search to find flights from Australia to Illinois 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 September 15, 2025.
Use the filters below to find and compare flights from Australia to Illinois that are best for you.

Fly from

Australia

Fly to

Illinois

Route

Depart

Return

Price

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Mon 10/6

10:00 am-8:06 pm

2 stops49h 06m

Chicago O'Hare Intl

Mon 10/20

3:45 pm-7:05 am

1 stop24h 20m

$765

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 10/28

9:45 am-7:30 pm

2 stops24h 45m

Chicago O'Hare Intl

Tue 11/4

8:00 am-8:45 am

2 stops32h 45m

$786

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 10/7

10:20 am-3:00 pm

1 stop19h 40m

Chicago O'Hare Intl

Tue 10/28

8:00 am-7:45 am

2 stops32h 45m

$792

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 10/14

10:20 am-3:00 pm

1 stop19h 40m

Chicago O'Hare Intl

Tue 10/21

8:40 am-7:05 am

2 stops31h 25m

$794

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 3/12

10:20 am-3:29 pm

2 stops45h 09m

Lambert-St Louis

Mon 3/16

4:05 pm-8:35 am

2 stops48h 30m

$809

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Sun 10/26

9:45 am-2:41 pm

1 stop19h 56m

Chicago O'Hare Intl

Mon 11/10

1:19 pm-8:45 am

2 stops27h 26m

$820

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 10/28

5:05 am-6:39 pm

3 stops28h 34m

Chicago O'Hare Intl

Tue 11/4

2:40 pm-8:45 am

2 stops26h 05m

$823

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 12/2

11:20 am-11:07 pm

2 stops28h 47m

Lambert-St Louis

Sat 12/13

1:55 pm-9:00 am

2 stops26h 05m

$833

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 12/2

11:20 am-11:07 pm

2 stops28h 47m

Lambert-St Louis

Tue 12/9

1:55 pm-9:00 am

2 stops26h 05m

$833

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/4

11:20 am-8:57 pm

2 stops26h 37m

Lambert-St Louis

Mon 12/8

4:05 pm-6:55 am

2 stops45h 50m

$836

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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

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

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

Currently, August is the cheapest month in which you can book a flight from Australia to Illinois (average of $245). Flying from Australia to Illinois in March is currently the most expensive (average of $321). 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 AU to IL?

Find hourly flight availability from Australia to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Australia to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Japan Airlines, Qantas Airways, and United Airlines from Australia to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,559 reviews

Food

7.7

Crew

8.7

Overall

8.3

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

HND - JFK

The plane was delayed due to maintenance after everybody boarded (1 hour), the inside of the plane was not air conditioned before takeoff, and the weather outside was hot. Upon arriving in JFK, there were further delays. The airline attendants were passive aggresive and not certainly were not polite.
Japan Airlines
8.3
Very good
1,559 reviews
Japan Airlines
8.3
Very good
1,559 reviews

Food

7.7

Crew

8.7

Overall

8.3

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

HND - JFK

The plane was delayed due to maintenance after everybody boarded (1 hour), the inside of the plane was not air conditioned before takeoff, and the weather outside was hot. Upon arriving in JFK, there were further delays. The airline attendants were passive aggresive and not certainly were not polite.
Qantas Airways
7.5
Good
905 reviews
Japan Airlines
8.3
Very good
1,559 reviews

Food

7.7

Crew

8.7

Overall

8.3

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

HND - JFK

The plane was delayed due to maintenance after everybody boarded (1 hour), the inside of the plane was not air conditioned before takeoff, and the weather outside was hot. Upon arriving in JFK, there were further delays. The airline attendants were passive aggresive and not certainly were not polite.
United Airlines
7.4
Good
8,929 reviews
Japan Airlines
8.3
Very good
1,559 reviews

Food

7.7

Crew

8.7

Overall

8.3

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

HND - JFK

The plane was delayed due to maintenance after everybody boarded (1 hour), the inside of the plane was not air conditioned before takeoff, and the weather outside was hot. Upon arriving in JFK, there were further delays. The airline attendants were passive aggresive and not certainly were not polite.
American Airlines
7.2
Good
10,000 reviews
Japan Airlines
8.3
Very good
1,559 reviews

Food

7.7

Crew

8.7

Overall

8.3

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

HND - JFK

The plane was delayed due to maintenance after everybody boarded (1 hour), the inside of the plane was not air conditioned before takeoff, and the weather outside was hot. Upon arriving in JFK, there were further delays. The airline attendants were passive aggresive and not certainly were not polite.
Air Canada
7.1
Good
10,000 reviews
Japan Airlines
8.3
Very good
1,559 reviews

Food

7.7

Crew

8.7

Overall

8.3

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

HND - JFK

The plane was delayed due to maintenance after everybody boarded (1 hour), the inside of the plane was not air conditioned before takeoff, and the weather outside was hot. Upon arriving in JFK, there were further delays. The airline attendants were passive aggresive and not certainly were not polite.

Related info for your journey

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

    A quick flight from Australia to Illinois can take about 26h 05m. Air Canada provides one of the quickest options available for as low as $844. Australia and Illinois are separated by a distance of 9479 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Australia to Illinois one-way?

    One-way options have recently been found by users for as low as $509 on Delta. Other airlines that offer cheap prices include United Airlines from $509 and Air Canada from $581 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Australia to Illinois 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 Australia to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Australia to Illinois (average of $245). Flying from Australia to Illinois in March is currently the most expensive (average of $321). 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 Australia to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Australia to Illinois

Discover the top 5 airlines that operate flights from Australia to Illinois. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$631Average$908FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$862Average$1,098FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$884Average$1,160FlexibilityNo cancel feeOn-time71%
Japan AirlinesCheapest$965Average$973FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$1,080Average$1,434FlexibilityNo cancel feeOn-time69%

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