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Cheap flights from Australia to Illinois from $436

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Australia to Illinois departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Australia to Illinois

Recent round-trip flight deals from Australia to Illinois

Enter your travel dates to find the best prices.
Air Canada Logo
10:45 am - 4:45 pm
BNE
-
ORD
22h 00m
2 stops
Air Canada Logo
6:00 pm - 8:45 am
ORD
-
BNE
46h 45m
2 stops
$835Air Canada
Wed, Feb 18 - Sat, Feb 21
Air Canada Logo
10:45 am - 2:41 pm
BNE
-
ORD
19h 56m
1 stop
Air Canada Logo
3:35 pm - 8:45 am
ORD
-
BNE
25h 10m
1 stop
$854Air Canada
Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
7:40 pm - 3:48 pm
BNE
-
ORD
35h 08m
2 stops
American Airlines Logo
11:45 am - 5:00 am
ORD
-
BNE
26h 15m
2 stops
$908American Airlines
Tue, Mar 17 - Wed, Apr 1
American Airlines Logo
9:40 am - 9:31 am
BNE
-
ORD
39h 51m
2 stops
American Airlines Logo
8:21 pm - 5:00 am
ORD
-
BNE
40h 39m
1 stop
$909American Airlines
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
1:00 pm - 4:44 pm
MEL
-
STL
20h 44m
1 stop
United Airlines Logo
6:51 am - 9:00 am
STL
-
MEL
34h 09m
1 stop
$915United Airlines
Mon, Mar 2 - Mon, Mar 9
Qantas Airways Logo
11:20 am - 11:47 pm
SYD
-
ORD
29h 27m
1 stop
Qantas Airways Logo
8:21 pm - 9:00 am
ORD
-
SYD
20h 39m
1 stop
$1,059Qantas Airways
Mon, Feb 23 - Tue, Mar 10
United Airlines Logo
11:50 am - 3:38 pm
SYD
-
STL
20h 48m
1 stop
United Airlines Logo
5:25 pm - 9:15 am
STL
-
SYD
22h 50m
1 stop
$1,060United Airlines
Thu, Feb 19 - Mon, Feb 23
Qantas Airways Logo
6:00 am - 11:49 pm
ADL
-
ORD
32h 19m
2 stops
Qantas Airways Logo
4:30 pm - 12:35 pm
ORD
-
ADL
29h 35m
2 stops
$1,215Qantas Airways
Thu, Apr 23 - Tue, Apr 28
Japan Airlines Logo
10:30 am - 1:45 pm
PER
-
ORD
41h 15m
2 stops
Japan Airlines Logo
6:40 pm - 10:55 pm
ORD
-
PER
39h 15m
2 stops
$1,314Japan Airlines
Thu, Mar 5 - Mon, Mar 9
Japan Airlines Logo
10:30 am - 1:45 pm
PER
-
ORD
41h 15m
2 stops
Japan Airlines Logo
6:40 pm - 10:55 pm
ORD
-
PER
39h 15m
2 stops
$1,315Japan Airlines
Thu, Mar 5 - Mon, Mar 9

American Airlines flights from Australia to Illinois

Our best American Airlines deals on Australia to Illinois flight tickets
American Airlines
Mar 17
BNE7:40 pmBrisbane
35h 08m
2 stops
ORD3:48 pmChicago O'Hare Intl
Apr 1
ORD11:45 amChicago O'Hare Intl
26h 15m
2 stops
BNE5:00 amBrisbane
$908
American Airlines
Feb 18
BNE9:40 amBrisbane
39h 51m
2 stops
ORD9:31 amChicago O'Hare Intl
Feb 21
ORD8:21 pmChicago O'Hare Intl
40h 39m
1 stop
BNE5:00 amBrisbane
$909
American Airlines
Feb 18
BNE9:40 amBrisbane
39h 51m
2 stops
ORD9:31 amChicago O'Hare Intl
Feb 21
ORD8:21 pmChicago O'Hare Intl
40h 39m
1 stop
BNE5:00 amBrisbane
$910

Japan Airlines flights from Australia to Illinois

Our best Japan Airlines deals on Australia to Illinois flight tickets
Japan Airlines
Mar 5
PER10:30 amPerth
41h 15m
2 stops
ORD1:45 pmChicago O'Hare Intl
Mar 9
ORD6:40 pmChicago O'Hare Intl
39h 15m
2 stops
PER10:55 pmPerth
$1,314
Japan Airlines
Mar 5
PER10:30 amPerth
41h 15m
2 stops
ORD1:45 pmChicago O'Hare Intl
Mar 9
ORD6:40 pmChicago O'Hare Intl
39h 15m
2 stops
PER10:55 pmPerth
$1,315
Japan Airlines
Feb 7
MEL7:20 amMelbourne
23h 25m
1 stop
ORD1:45 pmChicago O'Hare Intl
Feb 23
ORD10:35 amChicago O'Hare Intl
26h 05m
1 stop
MEL5:40 amMelbourne
$5,679

momondo Fare Finder

 
Customize 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, momondo users made 832,500 searches. Data last updated February 4, 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

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 2/18

10:45 am-4:45 pm

2 stops22h 00m

Chicago O'Hare Intl

Sat 2/21

6:00 pm-8:45 am

2 stops46h 45m

$835

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 2/18

10:45 am-2:41 pm

1 stop19h 56m

Chicago O'Hare Intl

Sat 2/21

3:35 pm-8:45 am

1 stop25h 10m

$854

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 3/17

7:40 pm-3:48 pm

2 stops35h 08m

Chicago O'Hare Intl

Wed 4/1

11:45 am-5:00 am

2 stops26h 15m

$908

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 2/18

9:40 am-9:31 am

2 stops39h 51m

Chicago O'Hare Intl

Sat 2/21

8:21 pm-5:00 am

1 stop40h 39m

$909

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 3/2

1:00 pm-4:44 pm

1 stop20h 44m

Lambert-St Louis

Mon 3/9

6:51 am-9:00 am

1 stop34h 09m

$915

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 2/23

11:20 am-11:47 pm

1 stop29h 27m

Chicago O'Hare Intl

Tue 3/10

8:21 pm-9:00 am

1 stop20h 39m

$1,059

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 2/19

11:50 am-3:38 pm

1 stop20h 48m

Lambert-St Louis

Mon 2/23

5:25 pm-9:15 am

1 stop22h 50m

$1,060

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Thu 4/23

6:00 am-11:49 pm

2 stops32h 19m

Chicago O'Hare Intl

Tue 4/28

4:30 pm-12:35 pm

2 stops29h 35m

$1,215

PerthChicago

PER - ORD

PERORD

Perth

Thu 3/5

10:30 am-1:45 pm

2 stops41h 15m

Chicago O'Hare Intl

Mon 3/9

6:40 pm-10:55 pm

2 stops39h 15m

$1,314

PerthChicago

PER - ORD

PERORD

Perth

Thu 3/5

10:30 am-1:45 pm

2 stops41h 15m

Chicago O'Hare Intl

Mon 3/9

6:40 pm-10:55 pm

2 stops39h 15m

$1,315

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Australia to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Australia is in March. Flight prices, which tend to average around $741, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of March, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $755.

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $959 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Australia for as low as $792 on momondo.

Can stopping save me money on Australia to Illinois flights?

You could potentially save up to 12% on your flight if you consider stops on a Australia to Illinois flight.

Cheap Australia to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Australia to Illinois

Fastest flight time

19h 33m

Direct flights

None
The fastest flight from Australia to Illinois takes 19h 33m
There are no direct flights from Australia to Illinois. There are no popular flight routes from Australia to Illinois.
Search flight deals

  • When did momondo last update prices for flights from Australia to Illinois?

    Prices for flights from Australia to Illinois were last updated today.

  • How many operators does momondo search for flights from Australia to Illinois?

  • How old do you have to be to fly from Australia to Illinois?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Australia to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Australia to Illinois

Compare and see reviews for airlines that fly from Australia to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Qantas AirwaysPriceFrom $646Free CancellationRating
7.5
986 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $862Free CancellationRating
7.1
10,688 reviews
Search Air Canada flights
Japan AirlinesPriceFrom $965Free CancellationRating
8.3
1,698 reviews
Search Japan Airlines flights
United AirlinesPriceFrom $1,080Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Australia to Illinois?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Australia to Illinois. momondo saves you time and could save you money on your trip.

Can I find flights from Australia to Illinois with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Australia to Illinois flights to just show those with flexible booking policies.

How can momondo help me find flights from Australia to Illinois?

Once all potential Australia to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Australia to Illinois right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Australia and alert you when they change.

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