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Cheap flights from Australia to Illinois from $557

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
9 Mar — 16 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

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 7 February 2026.

Thu 5/310:45
BNE
-
ORD
1 stop25h 15m
Air Canada
Thu 19/307:15
ORD
-
BNE
2 stops33h 30m
Air Canada
Deal found 7/2$975
Thu 1/1010:00
BNE
-
ORD
2 stops36h 16m
Air Canada
Wed 21/1010:53
ORD
-
BNE
2 stops29h 12m
Air Canada
Deal found 5/2$1,032
Tue 29/910:00
BNE
-
ORD
1 stop19h 48m
Air Canada
Wed 21/1010:53
ORD
-
BNE
2 stops29h 12m
Air Canada
Deal found 5/2$1,034
Thu 1/1010:00
BNE
-
ORD
2 stops36h 16m
Air Canada
Tue 20/1009:50
ORD
-
BNE
2 stops30h 15m
Air Canada
Deal found 5/2$1,043
Tue 29/910:00
BNE
-
ORD
1 stop24h 53m
Air Canada
Tue 20/1012:52
ORD
-
BNE
2 stops27h 13m
Air Canada
Deal found 5/2$1,046
Thu 1/1010:00
BNE
-
ORD
2 stops36h 16m
Air Canada
Thu 22/1015:40
ORD
-
BNE
2 stops30h 50m
Air Canada
Deal found 5/2$1,080
Tue 29/910:00
BNE
-
ORD
1 stop24h 53m
Air Canada
Thu 22/1015:40
ORD
-
BNE
2 stops30h 50m
Air Canada
Deal found 5/2$1,100
Tue 2/609:20
SYD
-
ORD
1 stop20h 25m
Air Canada
Tue 4/815:40
ORD
-
SYD
1 stop24h 40m
Air Canada
Deal found 5/2$1,131
Mon 5/1010:20
SYD
-
ORD
1 stop20h 28m
Air Canada
Thu 22/1008:45
ORD
-
SYD
2 stops31h 35m
Air Canada
Deal found 6/2$1,136
Thu 5/311:20
SYD
-
ORD
1 stop20h 21m
Air Canada
Wed 18/307:15
ORD
-
SYD
2 stops33h 20m
Air Canada
Deal found 6/2$1,137
Thu 19/310:25
SYD
-
ORD
2 stops37h 35m
Air Canada
Tue 21/408:42
ORD
-
SYD
2 stops31h 38m
Air Canada
Deal found 6/2$1,141
Mon 2/311:20
SYD
-
ORD
1 stop20h 21m
Air Canada
Mon 16/307:15
ORD
-
SYD
2 stops33h 20m
Air Canada
Deal found 7/2$1,143

Find flight deals from Australia to Illinois

Keep the following information in mind while searching for Australia to Illinois flight deals. Data was last updated 7 February 2026.

Round-trip from

$975

One-way from

$557

Popular in

December

Cheapest in

April

Average price

$1,537
Air Canada
  • Air Canada
  • 5/3-19/3
  • 3 total stops
  • 58h 45m total
  • Australia to Illinois
Search Deals
28/4
  • 28/4
  • 2 total stops
  • 31h 35m total
  • Australia to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($349 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($55 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 7 February 2026.
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

Thu 5/3

10:45-14:41

1 stop19h 56m

Chicago O'Hare Intl

Thu 19/3

15:35-07:45

1 stop25h 10m

$1,000

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Fri 8/5

10:00-14:45

1 stop19h 45m

Chicago O'Hare Intl

Sat 16/5

08:45-07:05

2 stops31h 20m

$1,110

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 12/3

10:25-14:41

1 stop20h 16m

Chicago O'Hare Intl

Thu 19/3

07:15-08:35

2 stops33h 20m

$1,148

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

05:10-20:00

2 stops29h 50m

Chicago O'Hare Intl

Wed 1/4

08:50-07:05

1 stop31h 15m

$1,168

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 19/3

10:25-14:41

1 stop20h 16m

Chicago O'Hare Intl

Tue 21/4

15:40-07:20

1 stop24h 40m

$1,168

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 18/2

10:45-14:41

1 stop19h 56m

Chicago O'Hare Intl

Sat 21/2

18:00-08:45

2 stops46h 45m

$1,190

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 19/3

10:25-20:00

1 stop25h 35m

Chicago O'Hare Intl

Wed 15/4

10:43-07:20

2 stops29h 37m

$1,214

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sun 22/3

09:10-00:21

2 stops31h 11m

Lambert-St Louis

Sun 29/3

14:12-08:50

2 stops50h 38m

$1,274

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Sun 8/3

18:05-14:41

2 stops35h 36m

Chicago O'Hare Intl

Sun 15/3

15:35-16:55

2 stops34h 20m

$1,278

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sat 21/3

16:05-22:58

1 stop22h 53m

Lambert-St Louis

Sat 28/3

09:35-05:00

1 stop27h 25m

$1,352

Flights are sorted by cheapest return flights first.

Deals found on 6/2

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 return 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, May is the cheapest month in which you can book a flight from Australia to Illinois (average of $865). Flying from Australia to Illinois in December is currently the most expensive (average of $1,473). 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.

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 7 February 2026.
Read reviews from past customers who have flown with Air New Zealand, Qantas Airways, andUnited Airlines from Australia to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very Good
582 reviews
Check prices

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air New Zealand
8.0
Very Good
582 reviews
Air New Zealand
8.0
Very Good
582 reviews
Check prices

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Qantas Airways
7.5
Good
988 reviews
Air New Zealand
8.0
Very Good
582 reviews
Check prices

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
United Airlines
7.4
Good
9,254 reviews
Air New Zealand
8.0
Very Good
582 reviews
Check prices

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
American Airlines
7.2
Good
11,249 reviews
Air New Zealand
8.0
Very Good
582 reviews
Check prices

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air Canada
7.1
Good
10,697 reviews
Air New Zealand
8.0
Very Good
582 reviews
Check prices

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

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?

    Airlines like Air Canada, Delta, and American Airlines fly from Australia to Illinois in about 19h 56m. The time it takes to get you to your destination can typically vary by up to 11h 15m. There are 14318 km between Australia and Illinois. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $181. Qantas Airways flights start at $545 while deals on Air New Zealand start at $755 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 holiday 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, May is the cheapest month in which you can book a flight from Australia to Illinois (average of $865). Flying from Australia to Illinois in December is currently the most expensive (average of $1,473). 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.

Top 9 airlines flying from Australia to Illinois

Discover the top 9 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 647,157 searches. Data last updated 7 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$903Average$1,478FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,080Average$1,613FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,094Average$1,544FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,101Average$1,455FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$1,258Average$1,999FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Cathay PacificCheapest$1,386Average$1,924FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
ANACheapest$1,497Average$1,615FlexibilityNo cancel feeOn-time80%
Search ANA flights
Japan AirlinesCheapest$1,843Average$2,263FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Qatar AirwaysCheapest$2,326Average$2,996FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Australia to Illinois?

Cheapflights helps you search for flights from Australia to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Australia to Illinois?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Illinois from Australia.

Can Cheapflights find flights from Australia to Illinois with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Australia to Illinois flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Australia to Illinois become cheaper?

Yes, Cheapflights offers price alerts on Australia to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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