Find flights
When to book
Airlines
FAQs

Cheap flights from Australia to Illinois from $847

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 26/6. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
27 Jun — 4 Jul1
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 28 May 2026.

Tue 11/809:45
MEL
-
ORD
1 stop23h 02m
Qantas Airways
Thu 20/817:15
ORD
-
MEL
1 stop22h 30m
Qantas Airways
Deal found 24/5$1,311
Wed 29/709:45
MEL
-
ORD
1 stop29h 22m
Qantas Airways
Thu 6/811:52
ORD
-
MEL
1 stop27h 53m
Qantas Airways
Deal found 28/5$1,320
Fri 29/509:45
MEL
-
ORD
1 stop25h 05m
American Airlines
Thu 11/611:43
ORD
-
MEL
2 stops28h 02m
American Airlines
Deal found 25/5$1,334
Sun 5/710:55
MEL
-
ORD
1 stop25h 43m
United Airlines
Tue 21/718:20
ORD
-
MEL
1 stop22h 55m
United Airlines
Deal found 27/5$1,352
Fri 10/710:55
MEL
-
ORD
2 stops24h 45m
United Airlines
Fri 17/721:35
ORD
-
MEL
1 stop43h 40m
United Airlines
Deal found 26/5$1,356
Fri 29/510:00
MEL
-
MDW
2 stops23h 33m
Delta
Thu 11/619:16
MDW
-
MEL
2 stops45h 34m
Delta
Deal found 25/5$1,360
Sun 12/710:00
MEL
-
ORD
2 stops26h 52m
Delta
Mon 27/708:52
ORD
-
MEL
2 stops31h 58m
Delta
Deal found 25/5$1,360
Wed 15/710:00
MEL
-
ORD
1 stop28h 18m
Delta
Wed 29/712:27
ORD
-
MEL
2 stops28h 23m
Delta
Deal found 27/5$1,362
Fri 24/710:00
MEL
-
ORD
1 stop22h 35m
Delta
Sun 2/819:17
ORD
-
MEL
2 stops45h 33m
Delta
Deal found 27/5$1,366
Fri 17/710:00
MEL
-
MDW
2 stops23h 25m
Delta
Thu 13/818:42
MDW
-
MEL
2 stops46h 08m
Delta
Deal found 26/5$1,367
Fri 10/710:55
MEL
-
ORD
1 stop25h 08m
Lufthansa
Fri 17/721:35
ORD
-
MEL
1 stop43h 40m
Lufthansa
Deal found 26/5$1,376
Thu 29/1011:15
SYD
-
ORD
1 stop34h 46m
American Airlines
Sun 1/1108:35
ORD
-
SYD
1 stop28h 35m
American Airlines
Deal found 27/5$1,422

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 28 May 2026.

Round-trip from

$1,311

One-way from

$847

Popular in

December

Cheapest in

August

Average price

$1,632
Qantas Airways
  • Qantas Airways
  • 11/8-20/8
  • 2 total stops
  • 45h 32m total
  • Australia to Illinois
Search Deals
United Airlines
  • United Airlines
  • 26/6
  • 1 total stop
  • 22h 22m total
  • Australia to Illinois
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($66 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 28 May 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

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 5/7

10:55-19:05

2 stops23h 10m

Chicago O'Hare Intl

Tue 21/7

15:26-08:15

1 stop25h 49m

$1,352

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 29/7

09:30-18:35

2 stops24h 05m

Chicago O'Hare Intl

Thu 6/8

16:45-08:15

2 stops24h 30m

$1,352

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 12/7

09:30-14:35

1 stop20h 05m

Chicago O'Hare Intl

Mon 27/7

15:57-07:30

2 stops24h 33m

$1,356

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Fri 24/7

10:00-22:15

2 stops27h 15m

Chicago Midway

Sun 2/8

18:58-07:50

2 stops45h 52m

$1,360

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 15/7

10:00-23:18

1 stop28h 18m

Chicago O'Hare Intl

Wed 29/7

07:37-07:50

1 stop33h 13m

$1,362

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Wed 8/7

10:00-18:57

2 stops23h 57m

Chicago O'Hare Intl

Wed 29/7

15:55-07:50

2 stops24h 55m

$1,367

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

09:20-18:42

2 stops48h 22m

Lambert-St Louis

Fri 4/9

08:55-07:20

2 stops31h 25m

$1,464

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

10:20-20:43

2 stops25h 23m

Lambert-St Louis

Fri 4/9

12:59-06:55

2 stops26h 56m

$1,518

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 23/10

10:15-16:49

2 stops22h 34m

Chicago O'Hare Intl

Fri 6/11

13:55-08:30

2 stops25h 35m

$1,591
Fastest return journey

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 18/11

09:15-12:37

1 stop19h 22m

Lambert-St Louis

Thu 3/12

13:20-06:30

1 stop25h 10m

$1,632

Flights are sorted by cheapest return flights first.

Deals found on 27/5

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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, September is the cheapest month in which you can book a flight from Australia to Illinois (average of $172). Flying from Australia to Illinois in June is currently the most expensive (average of $3,109). 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.

How far ahead should I book a flight from Australia to Illinois?

The price you pay for your flight from Australia to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 28 May 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
648 reviews
Check prices

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

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
648 reviews
Air New Zealand
8.0
Very Good
648 reviews
Check prices

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

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
1,043 reviews
Air New Zealand
8.0
Very Good
648 reviews
Check prices

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

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
9,751 reviews
Air New Zealand
8.0
Very Good
648 reviews
Check prices

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

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
11,639 reviews
Air New Zealand
8.0
Very Good
648 reviews
Check prices

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

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
11,095 reviews
Air New Zealand
8.0
Very Good
648 reviews
Check prices

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

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 United Airlines, Delta, and Air Canada fly from Australia to Illinois in about 23h 10m. The time it takes to get you to your destination can typically vary by up to 25h 12m. There are 15546 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 American Airlines, which is currently one of the cheapest options available, starting at $291. Qantas Airways flights start at $648 while deals on Air New Zealand start at $741 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, September is the cheapest month in which you can book a flight from Australia to Illinois (average of $172). Flying from Australia to Illinois in June is currently the most expensive (average of $3,109). 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 28 May 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$584Average$1,642FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,060Average$1,619FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,075Average$1,531FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
United AirlinesCheapest$1,229Average$1,963FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qantas AirwaysCheapest$1,235Average$1,906FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Cathay PacificCheapest$1,337Average$2,052FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
ANACheapest$1,496Average$1,731FlexibilityNo cancel feeOn-time80%
Search ANA flights
Japan AirlinesCheapest$1,810Average$2,412FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Virgin AustraliaCheapest$2,125Average$2,152FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.