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$448+ 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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Australia to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Australia (AU0) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$685
(Aunt Betty)

One-way from

$448
(Cheapflightsfares)
From Australia to Illinois
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One-way flight from Australia to Illinois
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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 January 21, 2025.

This Aunt Betty deal was found by Cheapflights users on 1/20. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/610:00 pmBNE - ORD
1 stop35h 17mQantas Airways
Mon 3/173:16 pmORD - BNE
1 stop22h 44mQantas Airways
Deal found 1/20$685
This Qantas Airways deal was found by Cheapflights users on 1/20. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/610:00 pmBNE - ORD
1 stop23h 04mMultiple Airlines
Mon 3/172:13 pmORD - BNE
1 stop23h 47mMultiple Airlines
Deal found 1/20$693
This BestPriceTravel deal was found by Cheapflights users on 1/21. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/311:15 amSYD - ORD
1 stop21h 35mQantas Airways
Fri 3/148:20 pmORD - SYD
1 stop20h 40mQantas Airways
Deal found 1/21$706
This Bravofly deal was found by Cheapflights users on 1/20. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/285:35 pmSYD - ORD
1 stop37h 20mMultiple Airlines
Thu 8/217:15 amORD - SYD
2 stops45h 00mMultiple Airlines
Deal found 1/20$850
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/261:45 pmMEL - ORD
2 stops32h 43mMultiple Airlines
Wed 3/54:45 pmORD - MEL
2 stops26h 30mMultiple Airlines
Deal found 1/20$991
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/69:40 amBNE - ORD
2 stops22h 34mAmerican Airlines
Mon 3/171:34 pmORD - BNE
2 stops24h 56mAmerican Airlines
Deal found 1/20$999
This Trip.com deal was found by Cheapflights users on 1/21. 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.
Tue 3/46:15 amADL - ORD
2 stops27h 25mMultiple Airlines
Tue 3/118:20 pmORD - ADL
2 stops31h 10mMultiple Airlines
Deal found 1/21$1,001
This BYOjet deal was found by Cheapflights users on 1/20. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/266:45 amMEL - ORD
2 stops23h 11mQantas Airways
Wed 3/55:40 pmORD - MEL
2 stops25h 55mQantas Airways
Deal found 1/20$1,002
This Air Canada deal was found by Cheapflights users on 1/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/511:20 amSYD - STL
2 stops44h 46mAir Canada
Wed 3/123:50 pmSTL - SYD
2 stops48h 45mAir Canada
Deal found 1/19$1,053
This KAYAK deal was found by Cheapflights users on 1/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/612:55 pmADL - ORD
2 stops45h 10mQantas Airways
Wed 9/242:42 pmORD - ADL
2 stops31h 03mQantas Airways
Deal found 1/21$1,086
This Air Canada deal was found by Cheapflights users on 1/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/206:35 amBNE - ORD
3 stops31h 31mAir Canada
Wed 2/262:05 pmORD - BNE
2 stops26h 35mAir Canada
Deal found 1/19$1,098
This Globehunters deal was found by Cheapflights users on 1/20. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/239:45 pmPER - ORD
1 stop30h 10mANA
Wed 11/57:35 pmORD - PER
2 stops58h 55mANA
Deal found 1/20$1,119

Find flights from Australia to Illinois within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 3/6

10:00 pm-5:17 pm

1 stop35h 17m

Chicago O'Hare Intl

Mon 3/17

3:16 pm-5:00 am

1 stop22h 44m

$685

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 3/6

10:00 pm-5:04 am

1 stop23h 04m

Chicago O'Hare Intl

Mon 3/17

2:13 pm-5:00 am

1 stop23h 47m

$693

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 3/3

11:15 am-3:50 pm

1 stop21h 35m

Chicago O'Hare Intl

Fri 3/14

8:20 pm-9:00 am

1 stop20h 40m

$706

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 2/10

2:00 pm-11:13 pm

2 stops26h 13m

Chicago O'Hare Intl

Mon 2/17

11:35 am-12:30 pm

2 stops31h 55m

$936

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 2/26

1:45 pm-5:28 am

2 stops32h 43m

Chicago O'Hare Intl

Wed 3/5

4:45 pm-12:15 pm

2 stops26h 30m

$991

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 3/6

9:40 am-4:14 pm

2 stops22h 34m

Chicago O'Hare Intl

Mon 3/17

1:34 pm-5:30 am

2 stops24h 56m

$999

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 3/4

6:15 am-5:10 pm

2 stops27h 25m

Chicago O'Hare Intl

Tue 3/11

8:20 pm-7:00 pm

2 stops31h 10m

$1,001

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 2/26

6:45 am-12:56 pm

2 stops23h 11m

Chicago O'Hare Intl

Wed 3/5

5:40 pm-12:35 pm

2 stops25h 55m

$1,002

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 3/5

11:20 am-3:06 pm

2 stops44h 46m

Lambert-St Louis

Wed 3/12

3:50 pm-8:35 am

2 stops48h 45m

$1,053

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Fri 6/6

12:55 pm-7:35 pm

2 stops45h 10m

Chicago O'Hare Intl

Wed 9/24

2:42 pm-12:15 pm

2 stops31h 03m

$1,086

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

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.

Travel insights for flights from Australia to Illinois

Get recent, data-driven insights about flights from Australia to Illinois including ideal travel times, pricing trends, and more.

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 $320). 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 January 21, 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.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 January 21, 2025.
Read through reviews of airlines operating flights from Australia to Illinois, such as ANA, Emirates and Cathay Pacific. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very good
62 reviews

Crew

9.1

Overall

8.8

Food

7.8

Boarding

8.7

Comfort

8.1

Entertainment

7.3

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui
8.8
Very good
62 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Crew

9.1

Overall

8.8

Food

7.8

Boarding

8.7

Comfort

8.1

Entertainment

7.3

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Korean Air
8.5
Very good
1,039 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Crew

9.1

Overall

8.8

Food

7.8

Boarding

8.7

Comfort

8.1

Entertainment

7.3

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

EVA Air
8.4
Very good
1,255 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Crew

9.1

Overall

8.8

Food

7.8

Boarding

8.7

Comfort

8.1

Entertainment

7.3

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

ANA
8.4
Very good
852 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Crew

9.1

Overall

8.8

Food

7.8

Boarding

8.7

Comfort

8.1

Entertainment

7.3

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Japan Airlines
8.3
Very good
1,449 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Crew

9.1

Overall

8.8

Food

7.8

Boarding

8.7

Comfort

8.1

Entertainment

7.3

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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 $448 on Qantas Airways. Other airlines that offer cheap prices include EVA Air from $642 and Cathay Pacific from $787 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 $320). 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 3 airlines flying from Australia to Illinois

Discover the top 3 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$737Average$1,230FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$884Average$1,264FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$964Average$1,549FlexibilityNo cancel feeOn-time69%
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