HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$463+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Australia with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 December 22, 2024.

Round-trip from

$866
(American Airlines)

One-way from

$463
(American Airlines)
From Illinois to Australia
Search Deals
One-way flight from Illinois to Australia
Search Deals

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 December 22, 2024.

This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/278:25 pmORD - SYD
1 stop43h 35mQantas Airways
Thu 1/1611:15 amSYD - ORD
1 stop25h 16mQantas Airways
Deal found 12/21$866
This American Airlines deal was found by Cheapflights users on 12/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/252:14 pmORD - SYD
2 stops23h 21mAmerican Airlines
Fri 12/279:25 pmSYD - ORD
1 stop25h 21mAmerican Airlines
Deal found 12/21$868
This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/257:18 pmORD - MEL
2 stops28h 47mQantas Airways
Fri 12/279:00 pmMEL - ORD
2 stops43h 10mQantas Airways
Deal found 12/21$1,215
This Jetabroad deal was found by Cheapflights users on 12/21. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/238:25 pmORD - SYD
1 stop43h 35mMultiple Airlines
Sat 12/2810:15 pmSYD - ORD
2 stops31h 44mMultiple Airlines
Deal found 12/21$1,226
This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/287:18 pmORD - PER
2 stops46h 57mQantas Airways
Fri 1/313:20 pmPER - ORD
2 stops38h 39mQantas Airways
Deal found 12/21$1,284
This oojo deal was found by Cheapflights users on 12/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/228:25 pmORD - BNE
2 stops53h 25mQantas Airways
Thu 12/266:05 amBNE - ORD
2 stops27h 24mQantas Airways
Deal found 12/21$1,353
This Gurufare deal was found by Cheapflights users on 12/21. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/249:00 amORD - CNS
2 stops39h 50mQantas Airways
Sat 1/1812:35 pmCNS - ORD
2 stops43h 24mQantas Airways
Deal found 12/21$1,400
This Travelocity deal was found by Cheapflights users on 12/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/257:18 pmORD - CNS
2 stops26h 12mMultiple Airlines
Fri 12/276:20 pmCNS - ORD
2 stops44h 50mMultiple Airlines
Deal found 12/21$1,468
This Orbitz deal was found by Cheapflights users on 12/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/228:25 pmORD - BNE
2 stops49h 05mMultiple Airlines
Thu 12/269:40 amBNE - ORD
1 stop19h 19mMultiple Airlines
Deal found 12/21$1,497
This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/249:50 amORD - SYD
2 stops30h 45mAir Canada
Sun 12/2911:20 amSYD - ORD
3 stops40h 34mAir Canada
Deal found 12/21$1,530
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/266:15 amORD - SYD
1 stop33h 50mUnited Airlines
Sun 1/124:15 pmSYD - ORD
1 stop24h 04mUnited Airlines
Deal found 12/21$1,746
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3011:48 amMDW - SYD
2 stops27h 47mDelta
Thu 1/1611:05 amSYD - MDW
2 stops28h 15mDelta
Deal found 12/21$1,769

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 December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 2/5

3:20 pm-7:25 am

1 stop23h 05m

Sydney Kingsford Smith

Wed 2/12

11:15 am-5:38 pm

2 stops23h 23m

$866

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 3/9

7:13 pm-9:00 am

1 stop21h 47m

Sydney Kingsford Smith

Sat 3/22

5:25 pm-11:59 pm

1 stop22h 34m

$869

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 2/3

5:40 pm-9:00 am

1 stop22h 20m

Sydney Kingsford Smith

Tue 2/11

11:15 am-3:59 pm

1 stop21h 44m

$870

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 2/24

5:40 pm-2:30 pm

2 stops28h 50m

Brisbane

Tue 3/11

6:10 am-3:55 pm

2 stops24h 45m

$1,011

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 3/17

3:16 pm-11:35 am

2 stops29h 19m

Brisbane

Tue 5/6

6:00 am-3:45 pm

2 stops24h 45m

$1,032

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 5/9

7:15 am-7:15 pm

2 stops45h 00m

Sydney Kingsford Smith

Sun 5/18

8:55 pm-4:59 am

2 stops47h 04m

$1,042

ChicagoCairns

ORD - CNS

ORDCNS

Chicago O'Hare Intl

Mon 2/3

8:35 pm-12:00 pm

2 stops47h 25m

Cairns

Mon 2/10

12:45 pm-6:05 am

2 stops33h 20m

$1,058

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Fri 3/28

2:13 pm-5:00 am

1 stop23h 47m

Brisbane

Sat 4/5

10:00 pm-12:10 pm

1 stop29h 10m

$1,108

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Sun 6/1

6:25 am-5:00 am

1 stop31h 35m

Melbourne

Mon 6/23

9:40 am-7:35 pm

1 stop24h 55m

$1,127

ChicagoMelbourne

ORD - MEL

ORDMEL

Chicago O'Hare Intl

Mon 2/3

5:40 pm-12:35 pm

2 stops25h 55m

Melbourne

Wed 2/12

12:00 pm-5:45 pm

1 stop22h 45m

$1,133

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 60 results
1
2
3
...
6

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 December 22, 2024.

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 December 22, 2024.
Read reviews from past customers who have flown ANA, Fiji Airways and Delta 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
8.7
Very good
63 reviews

Overall

8.7

Food

7.7

Crew

9.0

Entertainment

7.2

Comfort

8.0

Boarding

8.6

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
8.7
Very good
63 reviews
Air Tahiti Nui
8.7
Very good
63 reviews

Overall

8.7

Food

7.7

Crew

9.0

Entertainment

7.2

Comfort

8.0

Boarding

8.6

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
1,265 reviews
Air Tahiti Nui
8.7
Very good
63 reviews

Overall

8.7

Food

7.7

Crew

9.0

Entertainment

7.2

Comfort

8.0

Boarding

8.6

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
844 reviews
Air Tahiti Nui
8.7
Very good
63 reviews

Overall

8.7

Food

7.7

Crew

9.0

Entertainment

7.2

Comfort

8.0

Boarding

8.6

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
8.4
Very good
1,025 reviews
Air Tahiti Nui
8.7
Very good
63 reviews

Overall

8.7

Food

7.7

Crew

9.0

Entertainment

7.2

Comfort

8.0

Boarding

8.6

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.

Fiji Airways
8.1
Very good
191 reviews
Air Tahiti Nui
8.7
Very good
63 reviews

Overall

8.7

Food

7.7

Crew

9.0

Entertainment

7.2

Comfort

8.0

Boarding

8.6

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?

    $463 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Qantas Airways and Fiji Airways, with prices starting from $521 and $600, 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

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.

Alternative routes for Illinois to Australia

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Sydney flights
Los Angeles to Auckland flights
Los Angeles to Melbourne flights
San Francisco to Sydney flights
John F Kennedy Intl to Sydney flights
Los Angeles to Papeete flights
Dallas/Fort Worth to Sydney flights
San Francisco to Melbourne flights
Newark to Sydney flights
San Francisco to Auckland flights
John F Kennedy Intl to Auckland flights
LaGuardia to Sydney flights
Ontario to Auckland flights
Dallas/Fort Worth to Auckland flights
Seattle to Sydney flights
Santa Ana to Auckland flights
Seattle to Melbourne flights
Seattle to Auckland flights
Dulles Intl to Sydney flights
O'Hare Intl to Sydney flights
Los Angeles to Brisbane flights
John F Kennedy Intl to Melbourne flights
Hobby to Sydney flights
Ontario to Sydney flights
Atlanta to Sydney flights
Newark to Auckland flights
Santa Ana to Sydney flights
Reagan-National to Sydney flights
George Bush Intcntl to Sydney flights
Hobby to Melbourne flights
San Francisco to Papeete flights
Newark to Melbourne flights
Los Angeles to Avalon flights
LaGuardia to Auckland flights
Boston to Sydney flights
Denver to Sydney flights
Dulles Intl to Melbourne flights
O'Hare Intl to Auckland flights
Honolulu to Sydney flights
Detroit to Sydney flights
Los Angeles to Nadi flights
Boston to Auckland flights
Dallas/Fort Worth to Melbourne flights
Baltimore to Sydney flights
LaGuardia to Melbourne flights
Dallas/Fort Worth to Nadi flights
Hobby to Auckland flights
Denver to Auckland flights
Philadelphia to Sydney flights
Honolulu to Auckland flights

Top 9 airlines flying from Illinois to Australia

Discover the top 9 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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$630Average$1,478FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$679Average$1,290FlexibilityNo cancel feeOn-time71%
DeltaCheapest$851Average$983FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$916Average$1,883FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$956Average$1,393FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$1,138Average$1,402FlexibilityNo cancel feeOn-time72%
Air New ZealandCheapest$1,181Average$1,433FlexibilityNo cancel feeOn-time78%
Singapore AirlinesCheapest$1,421Average$1,704FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,700Average$1,903FlexibilityNo cancel feeOn-time68%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.