What airlines fly to Illinois?

Qantas Airways, United Airlines and Air Canada are the top three most popular airlines that fly to Illinois from Australia according to our data. Qantas Airways is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Australia to Illinois?

EVA Air, Air New Zealand, and Cathay Pacific are the most popular carriers operating from Australia to Illinois

How long is the flight from Australia to Illinois?

The flight from Australia to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Sydney (a popular airport in Australia) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 20h 12m on average. If you fly from Melbourne (another popular airport in Australia) to Chicago O'Hare Intl Airport, then the average flight time is 23h 31m.

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?

There are 5 operators available for flights from Australia to Illinois as of December 2025.

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.

$593 Cheap Flights from Australia to Illinois in 2025/26

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Find the cheapest flights from Australia to Illinois

Round-trip

One-way

Last minute

Recent round-trip flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

8:40 am - 7:15 am

BNE

ORD

37h 35m2 stops

4:45 pm - 5:00 am

ORD

BNE

21h 15m1 stop

$852American Airlines

mar., mar. 17 - mié., abr. 1

8:40 am - 7:15 am

BNE

ORD

37h 35m2 stops

11:54 am - 5:00 am

ORD

BNE

26h 06m2 stops

$854American Airlines

vie., mar. 13 - mar., mar. 17

10:45 am - 2:41 pm

BNE

ORD

19h 56m1 stop

10:00 am - 8:45 am

ORD

BNE

54h 45m2 stops

$962Air Canada

dom., ene. 25 - dom., feb. 1

10:45 am - 2:55 pm

BNE

ORD

44h 10m2 stops

3:35 pm - 8:45 am

ORD

BNE

25h 10m1 stop

$980Air Canada

vie., ene. 23 - vie., ene. 30

11:30 am - 6:46 pm

MEL

ORD

24h 16m2 stops

6:30 pm - 9:30 am

ORD

MEL

22h 00m1 stop

$1,010United Airlines

lun., ene. 26 - lun., feb. 2

1:00 pm - 7:50 pm

MEL

ORD

23h 50m1 stop

8:10 pm - 9:30 am

ORD

MEL

44h 20m1 stop

$1,058United Airlines

sáb., ene. 24 - sáb., ene. 31

7:05 am - 4:14 pm

SYD

STL

26h 09m2 stops

5:55 pm - 8:50 pm

STL

SYD

33h 55m2 stops

$1,194Qantas Airways

sáb., ene. 17 - sáb., feb. 21

9:55 pm - 2:47 pm

SYD

STL

33h 52m2 stops

5:55 pm - 9:30 pm

STL

SYD

34h 35m2 stops

$1,196Qantas Airways

mié., ene. 14 - mié., feb. 18

10:30 am - 1:45 pm

PER

ORD

41h 15m2 stops

5:40 pm - 11:55 pm

ORD

PER

40h 15m2 stops

$1,574Japan Airlines

sáb., ene. 24 - sáb., ene. 31

12:25 am - 1:45 pm

PER

ORD

27h 20m2 stops

6:40 pm - 11:55 pm

ORD

PER

40h 15m2 stops

$1,575Japan Airlines

vie., mar. 6 - mié., mar. 11

United Airlines flights from Australia to Illinois

Our best United Airlines deals on Australia to Illinois flight tickets

United Airlines

Jan 26

MEL11:30 amMelbourne

24h 16m

2 stops

ORD6:46 pmChicago O'Hare Intl

Feb 2

ORD6:30 pmChicago O'Hare Intl

22h 00m

1 stop

MEL9:30 amMelbourne

$1,010

Find similar

United Airlines

Jan 24

MEL1:00 pmMelbourne

23h 50m

1 stop

ORD7:50 pmChicago O'Hare Intl

Jan 31

ORD8:10 pmChicago O'Hare Intl

44h 20m

1 stop

MEL9:30 amMelbourne

$1,058

Find similar

United Airlines

Feb 14

MEL11:30 amMelbourne

22h 38m

2 stops

ORD5:08 pmChicago O'Hare Intl

Feb 21

ORD8:20 pmChicago O'Hare Intl

44h 40m

1 stop

MEL10:00 amMelbourne

$1,060

Find similar

Air New Zealand flights from Australia to Illinois

Our best Air New Zealand deals on Australia to Illinois flight tickets

Air New Zealand

May 22

MEL12:10 pmMelbourne

25h 32m

2 stops

ORD10:42 pmChicago O'Hare Intl

Jun 1

ORD4:40 pmChicago O'Hare Intl

27h 15m

2 stops

MEL10:55 amMelbourne

$1,037

Find similar

Air New Zealand

Jan 26

SYD9:55 amSydney Kingsford Smith

25h 57m

2 stops

ORD6:52 pmChicago O'Hare Intl

Feb 2

ORD3:53 pmChicago O'Hare Intl

23h 52m

2 stops

SYD8:45 amSydney Kingsford Smith

$1,047

Find similar

Air New Zealand

May 10

SYD11:55 amSydney Kingsford Smith

32h 52m

2 stops

STL5:47 amLambert-St Louis

May 25

STL6:00 pmLambert-St Louis

25h 40m

2 stops

SYD10:40 amSydney Kingsford Smith

$1,063

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

mar. 3/17

8:40 am-7:15 am

2 stops37h 35m

Chicago O'Hare Intl

mié. 4/1

4:45 pm-5:00 am

1 stop21h 15m

$852

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

vie. 3/13

8:40 am-7:15 am

2 stops37h 35m

Chicago O'Hare Intl

mar. 3/17

11:54 am-5:00 am

2 stops26h 06m

$854

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

dom. 1/25

10:45 am-2:41 pm

1 stop19h 56m

Chicago O'Hare Intl

dom. 2/1

10:00 am-8:45 am

2 stops54h 45m

$962

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

vie. 1/23

10:45 am-2:55 pm

2 stops44h 10m

Chicago O'Hare Intl

vie. 1/30

3:35 pm-8:45 am

1 stop25h 10m

$980

MelbourneChicago

MEL - ORD

MELORD

Melbourne

lun. 1/26

11:30 am-6:46 pm

2 stops24h 16m

Chicago O'Hare Intl

lun. 2/2

6:30 pm-9:30 am

1 stop22h 00m

$1,010

MelbourneChicago

MEL - ORD

MELORD

Melbourne

sáb. 1/24

1:00 pm-7:50 pm

1 stop23h 50m

Chicago O'Hare Intl

sáb. 1/31

8:10 pm-9:30 am

1 stop44h 20m

$1,058

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

sáb. 1/17

7:05 am-4:14 pm

2 stops26h 09m

Lambert-St Louis

sáb. 2/21

5:55 pm-8:50 pm

2 stops33h 55m

$1,194

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

mié. 1/14

9:55 pm-2:47 pm

2 stops33h 52m

Lambert-St Louis

mié. 2/18

5:55 pm-9:30 pm

2 stops34h 35m

$1,196

PerthChicago

PER - ORD

PERORD

Perth

sáb. 1/24

10:30 am-1:45 pm

2 stops41h 15m

Chicago O'Hare Intl

sáb. 1/31

5:40 pm-11:55 pm

2 stops40h 15m

$1,574

PerthChicago

PER - ORD

PERORD

Perth

vie. 3/6

12:25 am-1:45 pm

2 stops27h 20m

Chicago O'Hare Intl

mié. 3/11

6:40 pm-11:55 pm

2 stops40h 15m

$1,575

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 $732, 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 February is also cheap. Prices for this month can be found on momondo for an average of $737.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Australia to Illinois is on a Thursday when prices can be found for as low as $1,103. Flights from Australia to Illinois on a Monday will generally be more expensive and average around $1,626. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Australia to Illinois during this time can be as low as $1,141. Flights in the morning are often more expensive with an average ticket price of $1,365.

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 $956 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 $772 on momondo.

Can stopping save me money on Australia to Illinois flights?

You could potentially save up to 38% 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	20h 12m
Direct flights	None

The fastest flight from Australia to Illinois takes 20h 12m

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?
There are 5 operators available for flights from Australia to Illinois as of December 2025.
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 Airways	PriceFrom $631	Free Cancellation	Rating 7.5 947 reviews	Search Qantas Airways flights
Air Canada	PriceFrom $862	Free Cancellation	Rating 7.1 10,517 reviews	Search Air Canada flights
American Airlines	PriceFrom $875	Free Cancellation	Rating 7.2 11,049 reviews	Search American Airlines flights
Japan Airlines	PriceFrom $965	Free Cancellation	Rating 8.3 1,653 reviews	Search Japan Airlines flights
United Airlines	PriceFrom $1,080	Free Cancellation	Rating 7.4 9,095 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.