Cheap flights from Australia to Illinois from $869

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
8 Feb — 15 Feb1
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 9 January 2026.

Round-trip from

$1,058

One-way from

$869

Popular in

December

Cheapest in

March

Average price

$1,465
American Airlines
  • American Airlines
  • 19/2-21/2
  • 3 total stops
  • 68h 14m total
  • Australia to Illinois
Air New Zealand
  • Air New Zealand
  • 18/4
  • 2 total stops
  • 26h 33m total
  • Australia to Illinois
Highest demand for flights based on searches. 17% potential increase in price ($456 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($79 potential savings vs. average return price).
Average for round-trip flights in January 2026

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 9 January 2026.

Thu 19/209:40BNE - ORD
2 stops42h 45mAmerican Airlines
Sat 21/211:31ORD - BNE
1 stop25h 29mAmerican Airlines
Deal found 8/1$1,058
Thu 19/211:40BNE - ORD
2 stops40h 02mUnited Airlines
Sat 21/208:56ORD - BNE
1 stop30h 34mUnited Airlines
Deal found 7/1$1,079
Mon 2/210:45BNE - STL
2 stops44h 44mAir Canada
Fri 20/216:05STL - BNE
2 stops48h 40mAir Canada
Deal found 8/1$1,200
Thu 5/210:45BNE - STL
2 stops44h 44mAir Canada
Mon 9/216:15STL - BNE
2 stops24h 30mAir Canada
Deal found 6/1$1,255
Thu 5/209:40BNE - STL
2 stops26h 33mAmerican Airlines
Mon 9/211:55STL - BNE
2 stops25h 05mAmerican Airlines
Deal found 8/1$1,258
Mon 2/209:40BNE - STL
1 stop25h 49mAmerican Airlines
Fri 20/216:13STL - BNE
1 stop22h 17mAmerican Airlines
Deal found 8/1$1,267
Sun 22/211:40BNE - STL
2 stops25h 25mUnited Airlines
Sun 1/306:00STL - BNE
2 stops33h 30mUnited Airlines
Deal found 8/1$1,280
Wed 4/210:45BNE - ORD
1 stop19h 56mAir Canada
Wed 11/207:15ORD - BNE
2 stops33h 30mAir Canada
Deal found 6/1$1,283
Tue 17/319:50BNE - ORD
2 stops33h 51mAir Canada
Wed 1/408:40ORD - BNE
2 stops31h 25mAir Canada
Deal found 9/1$1,331
Sun 22/210:45BNE - ORD
1 stop19h 56mAir Canada
Sun 1/315:35ORD - BNE
2 stops49h 10mAir Canada
Deal found 8/1$1,346
Sat 21/210:45BNE - ORD
2 stops25h 25mAir Canada
Sat 28/212:50ORD - BNE
2 stops51h 55mAir Canada
Deal found 6/1$1,374
Sun 12/710:00BNE - STL
2 stops67h 02mAir Canada
Sat 18/708:55STL - BNE
2 stops55h 10mAir Canada
Deal found 9/1$1,380

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 9 January 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 19/2

09:40-12:25

2 stops42h 45m

Chicago O'Hare Intl

Sat 21/2

11:31-05:00

1 stop25h 29m

$1,058

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 19/2

11:40-11:42

2 stops40h 02m

Chicago O'Hare Intl

Sat 21/2

08:56-07:30

1 stop30h 34m

$1,079

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 2/2

10:45-15:29

2 stops44h 44m

Lambert-St Louis

Fri 20/2

16:05-08:45

2 stops48h 40m

$1,200

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Thu 5/2

10:45-15:29

2 stops44h 44m

Lambert-St Louis

Mon 9/2

16:15-08:45

2 stops24h 30m

$1,255

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Thu 5/2

19:40-23:59

1 stop20h 19m

Lambert-St Louis

Mon 9/2

07:15-06:30

1 stop31h 15m

$1,258

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 2/2

09:40-19:29

1 stop25h 49m

Lambert-St Louis

Fri 20/2

16:13-06:30

1 stop22h 17m

$1,267

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 4/2

10:45-14:41

1 stop19h 56m

Chicago O'Hare Intl

Wed 11/2

07:15-08:45

2 stops33h 30m

$1,283

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Sun 22/2

10:45-14:41

1 stop19h 56m

Chicago O'Hare Intl

Sun 1/3

15:35-08:45

2 stops49h 10m

$1,346

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

$1,374

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Sat 21/2

10:45-20:10

2 stops25h 25m

Chicago O'Hare Intl

Sat 28/2

12:50-08:45

2 stops51h 55m

$1,374

Flights are sorted by cheapest return flights first.

Deals found on 6/1

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 $906). Flying from Australia to Illinois in December is currently the most expensive (average of $1,543). 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 9 January 2026.
Read reviews from past customers who have flown with Air New Zealand, Cathay Pacific, andQantas Airways from Australia to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

Crew

8.5

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

Crew

8.5

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

Crew

8.5

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

Crew

8.5

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

Crew

8.5

Overall

8.0

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

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 American Airlines, United Airlines, and Air Canada fly from Australia to Illinois in about 40h 02m. The time it takes to get you to your destination can typically vary by up to 4h 42m. 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 $190. Qantas Airways flights start at $563 while deals on Cathay Pacific start at $983 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 $906). Flying from Australia to Illinois in December is currently the most expensive (average of $1,543). 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

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Top 10 airlines flying from Australia to Illinois

Discover the top 10 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 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$946Average$1,541FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$1,146Average$1,628FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,153Average$1,668FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,166Average$1,690FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,319Average$2,125FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Cathay PacificCheapest$1,452Average$2,015FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
ANACheapest$1,568Average$1,692FlexibilityNo cancel feeOn-time80%
Search ANA flights
Virgin AustraliaCheapest$1,720Average$2,788FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
Japan AirlinesCheapest$1,930Average$2,370FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Qatar AirwaysCheapest$2,436Average$3,137FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

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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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