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Cheap flights from Australia to Illinois from $846

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
4 Apr — 11 Apr1
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 5 March 2026.

Thu 5/319:40
BNE
-
STL
2 stops29h 15m
American Airlines
Mon 9/318:57
STL
-
BNE
2 stops43h 33m
American Airlines
Deal found 2/3$1,114
Fri 17/413:30
MEL
-
ORD
2 stops24h 57m
Multiple Airlines
Mon 27/405:15
ORD
-
MEL
2 stops40h 10m
Multiple Airlines
Deal found 28/2$1,116
Thu 5/311:40
BNE
-
STL
1 stop26h 45m
United Airlines
Mon 9/311:25
STL
-
BNE
2 stops28h 05m
United Airlines
Deal found 1/3$1,137
Sat 18/413:30
MEL
-
ORD
2 stops24h 57m
Multiple Airlines
Sat 25/415:00
ORD
-
MEL
2 stops30h 00m
Multiple Airlines
Deal found 4/3$1,168
Thu 16/413:30
MEL
-
ORD
2 stops24h 57m
Multiple Airlines
Thu 23/414:00
ORD
-
MEL
2 stops31h 00m
Multiple Airlines
Deal found 1/3$1,224
Tue 17/308:40
BNE
-
ORD
2 stops42h 45m
American Airlines
Wed 1/416:44
ORD
-
BNE
1 stop21h 16m
American Airlines
Deal found 3/3$1,229
Wed 18/312:00
MEL
-
STL
1 stop26h 25m
United Airlines
Sun 22/306:51
STL
-
MEL
1 stop34h 09m
United Airlines
Deal found 2/3$1,269
Fri 1/510:55
MEL
-
STL
2 stops24h 48m
United Airlines
Tue 2/619:23
STL
-
MEL
1 stop21h 52m
United Airlines
Deal found 1/3$1,276
Sat 18/413:15
SYD
-
ORD
2 stops25h 12m
Multiple Airlines
Sat 25/408:00
ORD
-
SYD
2 stops36h 50m
Multiple Airlines
Deal found 4/3$1,293
Fri 17/406:00
SYD
-
ORD
2 stops32h 27m
Multiple Airlines
Fri 24/414:00
ORD
-
SYD
2 stops30h 50m
Multiple Airlines
Deal found 3/3$1,310
Mon 11/513:30
MEL
-
ORD
2 stops31h 20m
Multiple Airlines
Tue 16/612:44
ORD
-
MEL
2 stops32h 16m
Multiple Airlines
Deal found 3/3$1,334
Tue 12/510:00
BNE
-
ORD
2 stops39h 18m
Air Canada
Tue 26/515:40
ORD
-
BNE
1 stop24h 25m
Air Canada
Deal found 1/3$1,336

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 5 March 2026.

Round-trip from

$1,116

One-way from

$846

Popular in

December

Cheapest in

April

Average price

$1,224
17/4-27/4
  • 17/4-27/4
  • 4 total stops
  • 65h 07m total
  • Australia to Illinois
Search Deals
15/6
  • 15/6
  • 3 total stops
  • 37h 48m total
  • Australia to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($330 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($53 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 5 March 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

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 18/3

10:30-21:07

2 stops26h 37m

Lambert-St Louis

Sun 22/3

08:17-09:00

2 stops32h 43m

$1,269

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 1/5

10:55-20:43

2 stops24h 48m

Lambert-St Louis

Tue 2/6

11:10-08:15

2 stops30h 05m

$1,276

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Tue 5/5

10:55-20:43

2 stops24h 48m

Lambert-St Louis

Tue 2/6

13:38-08:15

2 stops27h 37m

$1,276

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 4/5

10:55-20:43

2 stops24h 48m

Lambert-St Louis

Tue 2/6

13:38-08:15

2 stops27h 37m

$1,276

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 7/5

10:55-18:22

1 stop22h 27m

Lambert-St Louis

Tue 2/6

19:23-08:15

1 stop21h 52m

$1,276

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 25/3

12:00-21:07

2 stops25h 07m

Lambert-St Louis

Sun 29/3

18:05-08:30

2 stops46h 25m

$1,344

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 19/4

13:15-05:35

2 stops31h 20m

Chicago O'Hare Intl

Sun 26/4

14:00-11:50

2 stops30h 50m

$1,366

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Mon 20/4

21:20-20:15

2 stops37h 25m

Chicago O'Hare Intl

Sun 26/4

15:40-11:50

2 stops29h 40m

$1,516

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Wed 3/6

10:00-21:09

2 stops26h 09m

Chicago Midway

Wed 17/6

09:20-07:50

2 stops31h 30m

$1,518

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 3/6

10:00-21:20

2 stops26h 20m

Chicago O'Hare Intl

Wed 17/6

15:50-07:50

2 stops25h 00m

$1,518

Flights are sorted by cheapest return flights first.

Deals found on 2/3

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, May is the cheapest month in which you can book a flight from Australia to Illinois (average of $862). Flying from Australia to Illinois in December is currently the most expensive (average of $1,506). 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 5 March 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
607 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.4

Entertainment

7.4

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Air New Zealand
8.0
Very Good
607 reviews
Air New Zealand
8.0
Very Good
607 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.4

Entertainment

7.4

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Qantas Airways
7.5
Good
1,002 reviews
Air New Zealand
8.0
Very Good
607 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.4

Entertainment

7.4

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
United Airlines
7.4
Good
9,388 reviews
Air New Zealand
8.0
Very Good
607 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.4

Entertainment

7.4

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
American Airlines
7.1
Good
11,382 reviews
Air New Zealand
8.0
Very Good
607 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.4

Entertainment

7.4

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Air Canada
7.1
Good
10,776 reviews
Air New Zealand
8.0
Very Good
607 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.4

Entertainment

7.4

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.

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 United Airlines, Delta, and Air Canada fly from Australia to Illinois in about 26h 09m. The time it takes to get you to your destination can typically vary by up to 8h 07m. 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 $180. Qantas Airways flights start at $614 while deals on Air New Zealand start at $752 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 $862). Flying from Australia to Illinois in December is currently the most expensive (average of $1,506). 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 5 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$957Average$1,616FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,076Average$1,605FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,090Average$1,553FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,107Average$1,501FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$1,267Average$2,044FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Cathay PacificCheapest$1,381Average$1,908FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
ANACheapest$1,491Average$1,609FlexibilityNo cancel feeOn-time80%
Search ANA flights
Japan AirlinesCheapest$1,836Average$2,265FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Virgin AustraliaCheapest$2,156Average$2,167FlexibilityNo 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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