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Cheap flights from Australia to Illinois from $744

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
1 May — 8 May1
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 1 April 2026.

Tue 12/510:00
BNE
-
ORD
1 stop19h 45m
Air Canada
Tue 19/508:45
ORD
-
BNE
2 stops31h 20m
Air Canada
Deal found 28/3$1,369
Thu 4/610:15
BNE
-
ORD
2 stops36h 35m
Air Canada
Mon 8/615:40
ORD
-
BNE
1 stop24h 25m
Air Canada
Deal found 27/3$1,389
Tue 21/413:15
SYD
-
ORD
3 stops35h 47m
Multiple Airlines
Wed 6/512:40
ORD
-
SYD
3 stops32h 10m
Multiple Airlines
Deal found 1/4$1,493
Sun 24/513:30
MEL
-
ORD
2 stops31h 29m
Multiple Airlines
Sun 31/507:15
ORD
-
MEL
2 stops38h 10m
Multiple Airlines
Deal found 28/3$1,502
Thu 14/510:00
BNE
-
STL
2 stops41h 06m
Air Canada
Thu 21/507:05
STL
-
BNE
2 stops57h 00m
Air Canada
Deal found 29/3$1,518
Thu 7/510:00
BNE
-
STL
2 stops49h 43m
Air Canada
Mon 11/513:05
STL
-
BNE
2 stops51h 00m
Air Canada
Deal found 28/3$1,545
Wed 6/510:00
BNE
-
ORD
2 stops37h 00m
Air Canada
Sat 30/512:40
ORD
-
BNE
2 stops27h 25m
Air Canada
Deal found 29/3$1,551
Mon 1/610:00
BNE
-
STL
2 stops52h 57m
Air Canada
Mon 15/613:05
STL
-
BNE
2 stops51h 00m
Air Canada
Deal found 29/3$1,554
Wed 20/509:20
SYD
-
STL
2 stops41h 46m
Air Canada
Thu 28/507:05
STL
-
SYD
2 stops33h 15m
Air Canada
Deal found 28/3$1,584
Tue 19/513:15
SYD
-
MDW
3 stops36h 54m
Multiple Airlines
Tue 26/506:00
MDW
-
SYD
3 stops38h 50m
Multiple Airlines
Deal found 31/3$1,606
Mon 7/920:50
MEL
-
STL
3 stops38h 10m
Multiple Airlines
Sun 27/914:40
STL
-
MEL
3 stops29h 45m
Multiple Airlines
Deal found 29/3$1,639
Tue 12/513:15
SYD
-
ORD
3 stops48h 58m
Multiple Airlines
Tue 19/506:55
ORD
-
SYD
3 stops37h 55m
Multiple Airlines
Deal found 28/3$1,661

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 1 April 2026.

Round-trip from

$1,369

One-way from

$744

Popular in

December

Cheapest in

August

Average price

$1,841
Air Canada
  • Air Canada
  • 12/5-19/5
  • 3 total stops
  • 51h 05m total
  • Australia to Illinois
Search Deals
11/6
  • 11/6
  • 3 total stops
  • 37h 59m total
  • Australia to Illinois
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($106 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($33 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 1 April 2026.
Use the filters below to find and compare flights from Australia to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 4/6

10:15-07:50

2 stops36h 35m

Chicago O'Hare Intl

Mon 8/6

15:40-07:05

1 stop24h 25m

$1,389

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Thu 14/5

10:00-12:06

2 stops41h 06m

Lambert-St Louis

Thu 21/5

07:05-07:05

2 stops57h 00m

$1,518

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Thu 7/5

10:00-20:43

2 stops49h 43m

Lambert-St Louis

Mon 11/5

13:05-07:05

2 stops51h 00m

$1,545

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 1/6

20:45-12:06

3 stops54h 21m

Lambert-St Louis

Mon 15/6

13:05-07:05

2 stops51h 00m

$1,584

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 6/5

10:00-08:00

2 stops37h 00m

Chicago O'Hare Intl

Sat 30/5

15:40-07:05

1 stop24h 25m

$1,604

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 7/9

20:50-20:00

3 stops38h 10m

Lambert-St Louis

Sun 27/9

14:40-11:25

3 stops29h 45m

$1,639

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 6/5

10:00-20:25

2 stops49h 25m

Lambert-St Louis

Sun 10/5

13:05-07:05

2 stops51h 00m

$1,724

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 7/9

13:35-23:41

1 stop25h 06m

Lambert-St Louis

Sun 27/9

15:33-10:35

2 stops28h 02m

$1,815

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 13/5

19:25-20:09

3 stops39h 44m

Lambert-St Louis

Wed 20/5

07:05-11:30

3 stops37h 25m

$1,958

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 16/7

22:15-17:04

2 stops33h 49m

Chicago O'Hare Intl

Sun 9/8

00:30-20:00

1 stop28h 30m

$2,099

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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, April is the cheapest month in which you can book a flight from Australia to Illinois (average of $967). Flying from Australia to Illinois in December is currently the most expensive (average of $1,531). 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 1 April 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
623 reviews
Check prices

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air New Zealand
8.0
Very Good
623 reviews
Air New Zealand
8.0
Very Good
623 reviews
Check prices

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Qantas Airways
7.5
Good
1,016 reviews
Air New Zealand
8.0
Very Good
623 reviews
Check prices

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
United Airlines
7.4
Good
9,533 reviews
Air New Zealand
8.0
Very Good
623 reviews
Check prices

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
American Airlines
7.1
Good
11,546 reviews
Air New Zealand
8.0
Very Good
623 reviews
Check prices

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air Canada
7.1
Good
10,877 reviews
Air New Zealand
8.0
Very Good
623 reviews
Check prices

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

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, American Airlines, and Delta fly from Australia to Illinois in about 23h 25m. The time it takes to get you to your destination can typically vary by up to 13h 10m. There are 15554 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 $183. Qantas Airways flights start at $668 while deals on Air Canada start at $761 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, April is the cheapest month in which you can book a flight from Australia to Illinois (average of $967). Flying from Australia to Illinois in December is currently the most expensive (average of $1,531). 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 1 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$974Average$1,941FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,093Average$1,617FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,108Average$1,578FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,125Average$1,474FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$1,287Average$2,118FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Cathay PacificCheapest$1,403Average$1,939FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
ANACheapest$1,516Average$1,636FlexibilityNo cancel feeOn-time80%
Search ANA flights
Japan AirlinesCheapest$1,866Average$2,328FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Virgin AustraliaCheapest$2,191Average$2,219FlexibilityNo cancel feeOn-time80%
Search Virgin Australia 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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