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$423+ Cheap flights from Illinois 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Illinois to Australia

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Australia (AU0). 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 enero 21, 2025.

Round-trip from

$777
(BestPriceTravel)

One-way from

$423
(Ovago)
From Illinois to Australia
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One-way flight from Illinois to Australia
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Find flight deals from Illinois to Australia

Cheapest flights from Illinois to Australia
Explore the most affordable flight options available from Illinois to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2025.

This BestPriceTravel 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/52:13 pmORD - BNE
1 stop22h 47mQantas Airways
mié. 3/128:05 amBNE - ORD
1 stop20h 01mQantas Airways
Deal found 1/20$777
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/63:16 pmORD - BNE
1 stop21h 44mAmerican Airlines
jue. 3/1310:00 pmBNE - ORD
1 stop23h 25mAmerican Airlines
Deal found 1/19$807
This Flighttix 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/512:25 pmORD - BNE
2 stops24h 35mBritish Airways
mié. 3/1910:00 pmBNE - ORD
2 stops22h 20mBritish Airways
Deal found 1/20$816
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/54:45 pmORD - BNE
2 stops25h 35mMultiple Airlines
mié. 3/1211:20 amBNE - ORD
2 stops32h 25mMultiple Airlines
Deal found 1/21$842
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/43:22 pmORD - SYD
1 stop22h 13mQantas Airways
lun. 2/1011:15 amSYD - ORD
1 stop23h 30mQantas Airways
Deal found 1/20$848
This Flighttix 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/232:14 pmORD - SYD
1 stop24h 11mBritish Airways
mié. 2/511:50 amSYD - ORD
1 stop22h 48mBritish Airways
Deal found 1/20$851
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.
vie. 2/282:13 pmORD - SYD
1 stop24h 12mAmerican Airlines
dom. 3/95:25 pmSYD - ORD
1 stop29h 00mAmerican Airlines
Deal found 1/20$856
This CheapTickets.ch 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 CheapTickets.ch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/67:00 amORD - SYD
2 stops33h 00mMultiple Airlines
jue. 3/1311:50 amSYD - ORD
1 stop19h 23mMultiple Airlines
Deal found 1/20$880
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/67:45 pmORD - SYD
2 stops32h 30mANA
mar. 5/278:55 pmSYD - ORD
1 stop26h 45mANA
Deal found 1/20$962
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/43:22 pmORD - ADL
2 stops24h 58mQantas Airways
mar. 3/47:05 amADL - ORD
2 stops26h 35mQantas Airways
Deal found 1/20$1,005
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/275:05 pmORD - ADL
2 stops27h 50mMultiple Airlines
dom. 7/276:00 amADL - ORD
2 stops28h 07mMultiple Airlines
Deal found 1/20$1,009
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/712:49 pmMDW - SYD
3 stops54h 41mMultiple Airlines
vie. 3/146:15 amSYD - MDW
3 stops39h 16mMultiple Airlines
Deal found 1/21$1,022

Find flights from Illinois to Australia within your budget

Customize your flight search to find flights from Illinois 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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

mié. 3/5

2:13 pm-5:00 am

1 stop22h 47m

Brisbane

mié. 3/12

8:05 am-1:06 pm

1 stop20h 01m

$777

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

jue. 3/6

3:16 pm-5:00 am

1 stop21h 44m

Brisbane

jue. 3/13

10:00 pm-6:25 am

1 stop23h 25m

$807

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

mié. 3/5

12:25 pm-5:00 am

2 stops24h 35m

Brisbane

mié. 3/19

10:00 pm-5:20 am

2 stops22h 20m

$816

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

mié. 3/5

4:45 pm-10:20 am

2 stops25h 35m

Brisbane

mié. 3/12

11:20 am-4:45 am

2 stops32h 25m

$842

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mar. 2/4

3:22 pm-6:35 am

1 stop22h 13m

Sydney Kingsford Smith

lun. 2/10

11:15 am-5:45 pm

1 stop23h 30m

$848

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

vie. 2/28

2:13 pm-7:25 am

1 stop24h 12m

Sydney Kingsford Smith

dom. 3/9

5:25 pm-5:25 am

1 stop29h 00m

$856

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

vie. 1/24

8:30 am-6:10 am

1 stop28h 40m

Sydney Kingsford Smith

jue. 2/6

11:50 am-2:25 pm

1 stop19h 35m

$858

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

dom. 3/9

2:13 pm-7:25 am

1 stop25h 12m

Sydney Kingsford Smith

dom. 3/23

9:25 pm-6:33 am

1 stop25h 08m

$861

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

jue. 3/6

7:00 am-9:00 am

2 stops33h 00m

Sydney Kingsford Smith

jue. 3/13

11:50 am-3:13 pm

1 stop19h 23m

$880

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

mar. 2/4

3:22 pm-8:50 am

2 stops24h 58m

Adelaide

mar. 3/4

7:05 am-5:10 pm

2 stops26h 35m

$1,005

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 Illinois to Australia

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

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

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Australia (average of $1,051). Flying from Illinois to Australia in December is currently the most expensive (average of $1,643). 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 IL to AU?

Find hourly flight availability from Illinois to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Australia as you normally would.

Rainfall in Australia by month

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

In terms of precipitation, rainfall in Australia ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Australia when rainfall is around 2.0 in.

Temperature in Australia by month

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

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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 enero 21, 2025.
Read reviews from past customers who have flown Delta, Air New Zealand and ANA from Illinois to Australia. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very good
62 reviews

Entertainment

7.3

Overall

8.8

Food

7.8

Crew

9.1

Boarding

8.7

Comfort

8.1

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

Entertainment

7.3

Overall

8.8

Food

7.8

Crew

9.1

Boarding

8.7

Comfort

8.1

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

Entertainment

7.3

Overall

8.8

Food

7.8

Crew

9.1

Boarding

8.7

Comfort

8.1

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

Entertainment

7.3

Overall

8.8

Food

7.8

Crew

9.1

Boarding

8.7

Comfort

8.1

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

Entertainment

7.3

Overall

8.8

Food

7.8

Crew

9.1

Boarding

8.7

Comfort

8.1

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.

Singapore Airlines
8.1
Very good
1,328 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Entertainment

7.3

Overall

8.8

Food

7.8

Crew

9.1

Boarding

8.7

Comfort

8.1

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 Illinois to Australia. 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 Illinois to Australia one-way?

    $423 is the cheapest one-way deal found within the past few days, from Qantas Airways. You may also be able to find cheap deals on American Airlines and Fiji Airways, with prices starting from $425 and $567, respectively.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Illinois to Australia (average of $1,051). Flying from Illinois to Australia in December is currently the most expensive (average of $1,643). 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 Illinois to Australia

Discover the top 10 airlines that operate flights from Illinois 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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$618Average$1,383FlexibilityNo cancel feeOn-time74%
ANACheapest$679Average$781FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$679Average$1,139FlexibilityNo cancel feeOn-time71%
DeltaCheapest$851Average$978FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$916Average$1,631FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$953Average$1,405FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$1,138Average$1,402FlexibilityNo cancel feeOn-time72%
Air New ZealandCheapest$1,181Average$1,420FlexibilityNo cancel feeOn-time78%
Singapore AirlinesCheapest$1,421Average$1,704FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,700Average$1,903FlexibilityNo cancel feeOn-time68%
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