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Cheap flights from Australia to Illinois from $879

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
18 Jun — 25 Jun1
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 19 May 2026.

Tue 19/509:45
MEL
-
ORD
1 stop29h 14m
American Airlines
Tue 2/622:30
ORD
-
MEL
1 stop41h 15m
American Airlines
Deal found 18/5$1,335
Wed 10/610:55
MEL
-
ORD
1 stop22h 45m
United Airlines
Wed 17/615:26
ORD
-
MEL
1 stop25h 49m
United Airlines
Deal found 18/5$1,350
Fri 24/710:00
MEL
-
ORD
1 stop28h 18m
Delta
Sun 2/819:17
ORD
-
MEL
2 stops45h 33m
Delta
Deal found 18/5$1,360
Fri 5/610:00
MEL
-
MDW
2 stops26h 09m
Delta
Sun 21/619:16
MDW
-
MEL
2 stops45h 34m
Delta
Deal found 18/5$1,362
Fri 5/610:00
MEL
-
ORD
2 stops26h 50m
Delta
Sun 21/619:37
ORD
-
MEL
2 stops45h 13m
Delta
Deal found 18/5$1,362
Sat 6/610:55
MEL
-
ORD
2 stops24h 16m
United Airlines
Fri 19/616:05
ORD
-
MEL
2 stops24h 25m
United Airlines
Deal found 14/5$1,366
Fri 12/609:30
MEL
-
ORD
2 stops25h 41m
United Airlines
Fri 19/616:12
ORD
-
MEL
2 stops25h 03m
United Airlines
Deal found 15/5$1,367
Fri 5/609:30
MEL
-
ORD
1 stop22h 34m
Multiple Airlines
Sun 21/614:30
ORD
-
MEL
1 stop26h 45m
Multiple Airlines
Deal found 18/5$1,371
Fri 24/710:00
MEL
-
MDW
2 stops27h 15m
Delta
Sun 2/819:06
MDW
-
MEL
2 stops45h 44m
Delta
Deal found 15/5$1,377
Mon 1/614:30
MEL
-
ORD
2 stops24h 29m
American Airlines
Mon 22/615:23
ORD
-
MEL
1 stop24h 22m
American Airlines
Deal found 17/5$1,378
Fri 19/610:00
MEL
-
MDW
2 stops44h 40m
Delta
Wed 8/713:49
MDW
-
MEL
2 stops27h 01m
Delta
Deal found 14/5$1,380
Sun 12/710:00
MEL
-
ORD
1 stop28h 18m
Delta
Tue 18/815:31
ORD
-
MEL
2 stops49h 19m
Delta
Deal found 14/5$1,380

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 19 May 2026.

Round-trip from

$1,335

One-way from

$879

Popular in

December

Cheapest in

August

Average price

$1,630
Qantas Airways
  • Qantas Airways
  • 1/6-22/6
  • 2 total stops
  • 67h 55m total
  • Australia to Illinois
Search Deals
American Airlines
  • American Airlines
  • 25/5
  • 2 total stops
  • 29h 34m total
  • Australia to Illinois
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($67 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($27 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 19 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

Wed 10/6

10:55-18:40

1 stop22h 45m

Chicago O'Hare Intl

Wed 17/6

15:26-08:15

1 stop25h 49m

$1,350

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 1/6

10:55-18:51

2 stops22h 56m

Chicago O'Hare Intl

Fri 12/6

16:12-08:15

2 stops25h 03m

$1,350

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 5/6

09:30-17:04

1 stop22h 34m

Chicago O'Hare Intl

Fri 26/6

15:47-08:15

2 stops25h 28m

$1,350

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Fri 5/6

10:00-21:09

2 stops26h 09m

Chicago Midway

Sun 21/6

19:16-07:50

2 stops45h 34m

$1,362
Fastest return journey

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 6/6

10:55-16:38

1 stop20h 43m

Chicago O'Hare Intl

Fri 19/6

14:30-07:30

2 stops26h 00m

$1,367

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 12/6

09:30-20:11

2 stops25h 41m

Chicago O'Hare Intl

Fri 19/6

16:12-08:15

2 stops25h 03m

$1,367

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 12/7

10:00-23:18

1 stop28h 18m

Chicago O'Hare Intl

Tue 18/8

15:31-07:50

2 stops49h 19m

$1,380

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 17/6

09:30-21:30

2 stops27h 00m

Lambert-St Louis

Wed 24/6

10:25-07:00

2 stops29h 35m

$1,441

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 15/10

10:15-16:49

2 stops22h 34m

Chicago O'Hare Intl

Tue 17/11

11:30-08:30

2 stops28h 00m

$1,451

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

10:20-18:39

1 stop23h 19m

Lambert-St Louis

Sat 5/9

15:13-07:00

2 stops24h 47m

$1,511

Flights are sorted by cheapest return flights first.

Deals found on 16/5

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $2,845). 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 19 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
645 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

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

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

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
1,037 reviews
Air New Zealand
8.0
Very Good
645 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

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
9,731 reviews
Air New Zealand
8.0
Very Good
645 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

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
11,644 reviews
Air New Zealand
8.0
Very Good
645 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

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
11,062 reviews
Air New Zealand
8.0
Very Good
645 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

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 22h 45m. The time it takes to get you to your destination can typically vary by up to 27h 20m. 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 Qantas Airways, which is currently one of the cheapest options available, starting at $647. Air New Zealand flights start at $741 while deals on Cathay Pacific start at $834 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 $2,845). 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 19 May 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$584Average$1,428FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qantas AirwaysCheapest$943Average$1,856FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,059Average$1,620FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,073Average$1,529FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
United AirlinesCheapest$1,227Average$2,035FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Cathay PacificCheapest$1,336Average$1,912FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
ANACheapest$1,468Average$1,729FlexibilityNo cancel feeOn-time80%
Search ANA flights
Japan AirlinesCheapest$1,808Average$2,409FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Virgin AustraliaCheapest$2,123Average$2,150FlexibilityNo 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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