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Illinois

$388+ 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
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$800
(Booking.com)

One-way from

$388
(flugladen.de)

Popular in

December

Cheapest in

February

Average price

$1,047
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. 18% potential increase in price ($236 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 31, 2025.

This Booking.com deal was found by Cheapflights users on 7/30. 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.
mar. 10/710:20 amBNE - ORD
2 stops21h 31mAir Canada
mar. 10/287:10 amORD - BNE
2 stops33h 35mAir Canada
Deal found 7/30$800
This American Airlines deal was found by Cheapflights users on 7/31. 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.
lun. 8/189:10 amSYD - STL
2 stops24h 59mAmerican Airlines
sáb. 11/83:59 pmSTL - SYD
2 stops24h 01mAmerican Airlines
Deal found 7/31$814
This United Airlines deal was found by Cheapflights users on 7/31. 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.
dom. 9/1410:55 amMEL - STL
1 stop20h 58mUnited Airlines
dom. 9/216:15 amSTL - MEL
2 stops35h 00mUnited Airlines
Deal found 7/31$824
This United Airlines deal was found by Cheapflights users on 7/30. 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.
dom. 9/149:30 amSYD - STL
2 stops24h 28mUnited Airlines
dom. 9/2111:05 amSTL - SYD
2 stops28h 50mUnited Airlines
Deal found 7/30$830
This BYOjet deal was found by Cheapflights users on 7/30. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/75:00 amBNE - ORD
3 stops29h 29mMultiple Airlines
mar. 10/282:40 pmORD - BNE
2 stops26h 05mMultiple Airlines
Deal found 7/30$869
This BYOjet deal was found by Cheapflights users on 7/30. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/146:00 amMEL - ORD
2 stops23h 54mMultiple Airlines
dom. 8/177:35 pmORD - MEL
2 stops25h 45mMultiple Airlines
Deal found 7/30$925
This BYOjet deal was found by Cheapflights users on 7/30. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/126:10 amADL - ORD
2 stops23h 14mMultiple Airlines
mar. 9/167:41 pmORD - ADL
2 stops32h 39mMultiple Airlines
Deal found 7/30$937
This Air Canada deal was found by Cheapflights users on 7/30. 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.
dom. 9/149:20 amSYD - STL
3 stops49h 37mAir Canada
dom. 9/211:30 pmSTL - SYD
2 stops26h 50mAir Canada
Deal found 7/30$941
This BYOjet deal was found by Cheapflights users on 7/29. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/126:50 pmADL - ORD
2 stops34h 34mAir Canada
mar. 9/163:40 pmORD - ADL
2 stops39h 55mAir Canada
Deal found 7/29$948
This Booking.com deal was found by Cheapflights users on 7/29. 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.
mié. 10/226:05 amMEL - ORD
2 stops24h 55mAir Canada
sáb. 11/291:10 pmORD - MEL
2 stops28h 55mAir Canada
Deal found 7/29$977
This lol.travel deal was found by Cheapflights users on 7/31. 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.
mar. 11/254:45 pmPER - ORD
2 stops37h 59mAir Canada
mar. 12/93:40 pmORD - PER
2 stops29h 40mAir Canada
Deal found 7/31$1,023
This American Airlines deal was found by Cheapflights users on 7/29. 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.
jue. 7/319:45 amMEL - ORD
2 stops24h 39mAmerican Airlines
mié. 8/133:12 pmORD - MEL
1 stop24h 33mAmerican Airlines
Deal found 7/29$1,034

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 julio 31, 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

mar. 10/7

10:20 am-4:51 pm

2 stops21h 31m

Chicago O'Hare Intl

mar. 10/28

7:10 am-7:45 am

2 stops33h 35m

$800

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

lun. 8/18

9:10 am-7:09 pm

2 stops24h 59m

Lambert-St Louis

sáb. 11/8

3:59 pm-9:00 am

2 stops24h 01m

$814

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

dom. 9/14

10:55 am-4:53 pm

1 stop20h 58m

Lambert-St Louis

dom. 9/21

6:15 am-8:15 am

2 stops35h 00m

$824

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

dom. 9/14

10:20 am-4:53 pm

1 stop21h 33m

Lambert-St Louis

dom. 9/21

11:05 am-6:55 am

2 stops28h 50m

$830

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

mar. 10/7

5:00 am-7:29 pm

3 stops29h 29m

Chicago O'Hare Intl

mar. 10/28

2:40 pm-7:45 am

2 stops26h 05m

$869

MelbourneChicago

MEL - ORD

MELORD

Melbourne

lun. 1/19

7:10 am-2:41 pm

2 stops24h 31m

Chicago O'Hare Intl

lun. 2/23

3:40 pm-2:15 pm

2 stops29h 35m

$924

MelbourneChicago

MEL - ORD

MELORD

Melbourne

jue. 8/14

6:00 am-2:54 pm

2 stops23h 54m

Chicago O'Hare Intl

dom. 8/17

7:35 pm-12:20 pm

2 stops25h 45m

$925

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

mar. 8/12

6:10 am-2:54 pm

2 stops23h 14m

Chicago O'Hare Intl

mar. 9/16

7:41 pm-6:50 pm

2 stops32h 39m

$937

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

dom. 9/14

9:20 am-7:57 pm

3 stops49h 37m

Lambert-St Louis

dom. 9/21

1:30 pm-7:20 am

2 stops26h 50m

$941

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

mar. 8/12

6:50 pm-2:54 pm

2 stops34h 34m

Chicago O'Hare Intl

mar. 9/16

3:40 pm-10:05 pm

2 stops39h 55m

$948

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 julio 31, 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 julio 31, 2025.
Peruse reviews from past customers who have flown with EVA Air, ANA, and Korean Air 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.
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Boarding

8.4

Food

8.1

Crew

8.6

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,220 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Boarding

8.4

Food

8.1

Crew

8.6

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.4
Very good
922 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Boarding

8.4

Food

8.1

Crew

8.6

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,121 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Boarding

8.4

Food

8.1

Crew

8.6

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,536 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Boarding

8.4

Food

8.1

Crew

8.6

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Singapore Airlines
8.1
Very good
1,338 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Boarding

8.4

Food

8.1

Crew

8.6

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

  • 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 $642 on Etihad Airways. Other airlines that offer cheap prices include EVA Air from $646 and Cathay Pacific from $673 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 4 airlines flying from Australia to Illinois

Discover the top 4 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$631Average$908FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$884Average$1,243FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$985Average$1,247FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,080Average$1,463FlexibilityNo cancel feeOn-time69%

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