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Cheap flights from Australia to Illinois from $897

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 24/2. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
4 Dec — 11 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Illinois

Keep the following information in mind while searching for Australia to Illinois flight deals. Data was last updated 4 November 2025.

Round-trip from

$1,166

One-way from

$897

Popular in

December

Cheapest in

March

Average price

$1,765
Air Canada
  • Air Canada
  • 20/1-10/2
  • 2 total stops
  • 45h 01m total
  • Australia to Illinois
Search Deals
Air New Zealand
  • Air New Zealand
  • 24/2
  • 2 total stops
  • 26h 20m total
  • Australia to Illinois
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($627 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($99 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 4 November 2025.

Mon 10/1110:45BNE - ORD
1 stop19h 56mAir Canada
Mon 24/1107:05ORD - BNE
2 stops33h 40mAir Canada
Deal found 3/11$1,250
Tue 4/1110:45BNE - ORD
1 stop19h 56mAir Canada
Tue 11/1107:10ORD - BNE
2 stops33h 35mAir Canada
Deal found 3/11$1,264
Wed 12/1106:10BNE - ORD
3 stops29h 20mMultiple Airlines
Mon 17/1121:30ORD - BNE
2 stops43h 15mMultiple Airlines
Deal found 3/11$1,317
Wed 5/1110:45BNE - ORD
2 stops27h 20mAir Canada
Sun 9/1107:05ORD - BNE
2 stops57h 40mAir Canada
Deal found 3/11$1,339
Tue 2/1208:00MEL - ORD
2 stops23h 41mMultiple Airlines
Tue 9/1215:40ORD - MEL
2 stops25h 25mMultiple Airlines
Deal found 4/11$1,357
Wed 12/1114:05BNE - ORD
2 stops40h 36mAir Canada
Mon 17/1121:30ORD - BNE
2 stops43h 15mAir Canada
Deal found 3/11$1,390
Mon 8/1211:20SYD - ORD
1 stop35h 45mMultiple Airlines
Wed 31/1209:34ORD - SYD
2 stops30h 26mMultiple Airlines
Deal found 3/11$1,394
Thu 6/1112:10BNE - ORD
1 stop40h 45mCathay Pacific
Fri 14/1114:35ORD - BNE
1 stop40h 25mCathay Pacific
Deal found 3/11$1,407
Sat 22/1117:45SYD - ORD
2 stops28h 47mMultiple Airlines
Sun 7/1206:50ORD - SYD
1 stop31h 35mMultiple Airlines
Deal found 2/11$1,427
Thu 27/1111:20SYD - STL
2 stops45h 09mAir Canada
Tue 2/1213:35STL - SYD
2 stops24h 20mAir Canada
Deal found 3/11$1,449
Sun 23/1107:45SYD - ORD
2 stops30h 32mAir New Zealand
Mon 8/1213:00ORD - SYD
2 stops28h 30mAir New Zealand
Deal found 3/11$1,458
Tue 4/1100:30BNE - ORD
1 stop28h 25mCathay Pacific
Sat 8/1114:35ORD - BNE
1 stop40h 25mCathay Pacific
Deal found 3/11$1,464

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 4 November 2025.
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

Tue 20/1

10:45-14:41

1 stop19h 56m

Chicago O'Hare Intl

Tue 10/2

15:40-08:45

1 stop25h 05m

$1,166

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

19:50-14:41

2 stops33h 51m

Chicago O'Hare Intl

Wed 1/4

08:40-07:05

2 stops31h 25m

$1,206

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 11/3

09:45-19:53

1 stop25h 08m

Chicago O'Hare Intl

Sun 15/3

12:50-07:45

2 stops51h 55m

$1,326

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

10:25-15:29

2 stops45h 04m

Lambert-St Louis

Mon 16/3

16:05-08:35

2 stops48h 30m

$1,342

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Tue 2/12

08:00-14:41

2 stops23h 41m

Chicago O'Hare Intl

Tue 9/12

15:40-10:05

2 stops25h 25m

$1,357

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 8/12

11:20-06:05

1 stop35h 45m

Chicago O'Hare Intl

Wed 31/12

09:34-09:00

2 stops30h 26m

$1,394

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 13/3

06:40-14:41

2 stops24h 01m

Chicago O'Hare Intl

Fri 27/3

15:40-13:20

2 stops29h 40m

$1,400

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Tue 24/2

07:10-16:38

2 stops26h 28m

Chicago O'Hare Intl

Sun 1/3

15:40-15:35

2 stops30h 55m

$1,400

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Sun 1/3

10:45-19:30

2 stops48h 45m

Chicago O'Hare Intl

Sat 14/3

07:15-07:45

2 stops33h 30m

$1,413

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 22/11

17:45-05:32

2 stops28h 47m

Chicago O'Hare Intl

Sun 7/12

06:50-07:25

1 stop31h 35m

$1,427

Flights are sorted by cheapest return flights first.

Deals found on 3/11

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 $927). Flying from Australia to Illinois in December is currently the most expensive (average of $1,623). 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 4 November 2025.

One of the essential ways to save on airfare from Australia to Illinois is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 7% on airfare.

What is the cheapest day to fly from Australia to Illinois?

Use this chart to determine the cheapest time to fly return from Australia to Illinois. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Australia to Illinois flight should consider departing on Friday afternoons when fares are most often at their lowest. Thursday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 4 November 2025.
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
521 reviews
Check prices

Comfort

8.0

Food

7.4

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
Air New Zealand
8.0
Very Good
521 reviews
Air New Zealand
8.0
Very Good
521 reviews
Check prices

Comfort

8.0

Food

7.4

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
Qantas Airways
7.5
Good
927 reviews
Air New Zealand
8.0
Very Good
521 reviews
Check prices

Comfort

8.0

Food

7.4

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
United Airlines
7.4
Good
8,999 reviews
Air New Zealand
8.0
Very Good
521 reviews
Check prices

Comfort

8.0

Food

7.4

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
American Airlines
7.2
Good
11,038 reviews
Air New Zealand
8.0
Very Good
521 reviews
Check prices

Comfort

8.0

Food

7.4

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
Air Canada
7.1
Good
10,400 reviews
Air New Zealand
8.0
Very Good
521 reviews
Check prices

Comfort

8.0

Food

7.4

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

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 United 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 25h 39m. 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 Air New Zealand, which is currently one of the cheapest options available, starting at $897. United Airlines flights start at $902 while deals on Delta start at $902 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 $927). Flying from Australia to Illinois in December is currently the most expensive (average of $1,623). 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 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 4 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$972Average$1,591FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$1,173Average$1,667FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,181Average$1,561FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,194Average$1,729FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,363Average$2,196FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Cathay PacificCheapest$1,486Average$2,023FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
ANACheapest$1,605Average$1,732FlexibilityNo cancel feeOn-time80%
Search ANA flights
Japan AirlinesCheapest$1,976Average$2,356FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Virgin AustraliaCheapest$2,188Average$3,090FlexibilityNo 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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