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

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

What airlines fly to Illinois?

United Airlines, Air Canada and Japan Airlines are the top three most popular airlines that fly to Illinois from Australia according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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 37m on average. If you fly from Adelaide (another popular airport in Australia) to Chicago O'Hare Intl Airport, then the average flight time is 22h 52m.

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 4 operators available for flights from Australia to Illinois as of March 2026.

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.

$609 Cheap Flights from Australia to Illinois in 2026

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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.

1:30 pm - 5:35 am

MEL

ORD

31h 05m

2 stops

3:00 pm - 12:00 pm

ORD

MEL

30h 00m

2 stops

$883Multiple Airlines

sáb., may. 2 - sáb., may. 9

1:30 pm - 5:35 am

MEL

ORD

31h 05m

2 stops

5:15 am - 12:25 pm

ORD

MEL

40h 10m

2 stops

$892Multiple Airlines

dom., may. 3 - dom., may. 10

9:20 am - 2:45 pm

SYD

ORD

20h 25m

1 stop

8:40 am - 7:20 am

ORD

SYD

31h 40m

2 stops

$899Air Canada

jue., abr. 16 - mié., abr. 29

9:20 am - 4:35 pm

SYD

ORD

22h 15m

2 stops

3:40 pm - 7:20 am

ORD

SYD

24h 40m

1 stop

$902Air Canada

lun., abr. 20 - jue., abr. 30

1:35 pm - 7:30 pm

MEL

STL

20h 55m

1 stop

6:21 am - 6:45 am

STL

MEL

33h 24m

1 stop

$972Qantas Airways

mié., abr. 15 - mié., abr. 22

1:35 pm - 10:59 pm

MEL

STL

24h 24m

1 stop

2:37 pm - 6:45 am

STL

MEL

25h 08m

2 stops

$977American Airlines

mié., abr. 15 - mié., abr. 22

10:55 am - 11:59 pm

MEL

CMI

28h 04m

2 stops

1:36 pm - 8:15 am

CMI

MEL

27h 39m

2 stops

$988United Airlines

jue., abr. 30 - jue., may. 7

8:15 am - 5:21 pm

MEL

STL

24h 06m

2 stops

6:21 am - 6:45 am

STL

MEL

33h 24m

1 stop

$1,007American Airlines

jue., abr. 30 - jue., may. 7

9:30 am - 10:59 pm

MEL

STL

28h 29m

2 stops

1:36 pm - 8:15 am

STL

MEL

27h 39m

2 stops

$1,019United Airlines

vie., jul. 31 - dom., sep. 6

1:35 pm - 7:30 pm

MEL

STL

20h 55m

1 stop

6:21 am - 6:45 am

STL

MEL

33h 24m

1 stop

$1,020Qantas Airways

lun., may. 4 - lun., may. 11

Air Canada flights from Australia to Illinois

Our best Air Canada deals on Australia to Illinois flight tickets

Air Canada

Apr 16

SYD9:20 amSydney Kingsford Smith

20h 25m

1 stop

ORD2:45 pmChicago O'Hare Intl

Apr 29

ORD8:40 amChicago O'Hare Intl

31h 40m

2 stops

SYD7:20 amSydney Kingsford Smith

$899

Air Canada

Apr 20

SYD9:20 amSydney Kingsford Smith

22h 15m

2 stops

ORD4:35 pmChicago O'Hare Intl

Apr 30

ORD3:40 pmChicago O'Hare Intl

24h 40m

1 stop

SYD7:20 amSydney Kingsford Smith

$902

Air Canada

May 4

SYD9:20 amSydney Kingsford Smith

20h 25m

1 stop

ORD2:45 pmChicago O'Hare Intl

May 11

ORD8:45 amChicago O'Hare Intl

31h 35m

2 stops

SYD7:20 amSydney Kingsford Smith

$904

Emirates flights from Australia to Illinois

Our best Emirates deals on Australia to Illinois flight tickets

Emirates

Apr 2

MEL10:15 pmMelbourne

33h 30m

1 stop

ORD3:45 pmChicago O'Hare Intl

Apr 14

ORD8:35 pmChicago O'Hare Intl

41h 55m

1 stop

MEL5:30 amMelbourne

$1,987

Emirates

Apr 2

SYD9:45 pmSydney Kingsford Smith

34h 00m

1 stop

ORD3:45 pmChicago O'Hare Intl

Apr 5

ORD8:35 pmChicago O'Hare Intl

42h 30m

1 stop

SYD6:05 amSydney Kingsford Smith

$2,103

Emirates

Apr 1

MEL10:15 pmMelbourne

33h 30m

1 stop

ORD3:45 pmChicago O'Hare Intl

Apr 9

ORD8:35 pmChicago O'Hare Intl

34h 15m

1 stop

MEL9:50 pmMelbourne

$2,108

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MelbourneChicago

MEL - ORD

MELORD

Melbourne

sáb. 5/2

1:30 pm-5:35 am

2 stops31h 05m

Chicago O'Hare Intl

sáb. 5/9

3:00 pm-12:00 pm

2 stops30h 00m

$883

MelbourneChicago

MEL - ORD

MELORD

Melbourne

dom. 5/3

1:30 pm-5:35 am

2 stops31h 05m

Chicago O'Hare Intl

dom. 5/10

5:15 am-12:25 pm

2 stops40h 10m

$892

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

jue. 4/16

9:20 am-2:45 pm

1 stop20h 25m

Chicago O'Hare Intl

mié. 4/29

8:40 am-7:20 am

2 stops31h 40m

$899

Quickest round-trip

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

lun. 4/20

9:20 am-4:35 pm

2 stops22h 15m

Chicago O'Hare Intl

jue. 4/30

3:40 pm-7:20 am

1 stop24h 40m

$902

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

mié. 4/15

1:35 pm-7:30 pm

1 stop20h 55m

Lambert-St Louis

mié. 4/22

6:21 am-6:45 am

1 stop33h 24m

$972

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

mié. 4/15

1:35 pm-10:59 pm

1 stop24h 24m

Lambert-St Louis

mié. 4/22

2:37 pm-6:45 am

2 stops25h 08m

$977

MelbourneChampaign

MEL - CMI

MELCMI

Melbourne

jue. 4/30

10:55 am-11:59 pm

2 stops28h 04m

Champaign University-Willard

jue. 5/7

1:36 pm-8:15 am

2 stops27h 39m

$988

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

jue. 4/30

8:15 am-5:21 pm

2 stops24h 06m

Lambert-St Louis

jue. 5/7

6:21 am-6:45 am

1 stop33h 24m

$1,007

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

vie. 7/31

9:30 am-10:59 pm

2 stops28h 29m

Lambert-St Louis

dom. 9/6

1:36 pm-8:15 am

2 stops27h 39m

$1,019

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

lun. 5/4

1:35 pm-7:30 pm

1 stop20h 55m

Lambert-St Louis

lun. 5/11

6:21 am-6:45 am

1 stop33h 24m

$1,020

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 August. Flight prices, which tend to average around $1,047, 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 August, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $1,098.

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 $1,279 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 $838 on momondo.

Can stopping save me money on Australia to Illinois flights?

You could potentially save up to 9% 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 39m
Direct flights	None

The fastest flight from Australia to Illinois takes 19h 39m

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 4 operators available for flights from Australia to Illinois as of March 2026.
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 $759	Free Cancellation	Rating 7.5 1,006 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $795	Free Cancellation	Rating 7.4 9,445 reviews	Search United Airlines flights
Air Canada	PriceFrom $862	Free Cancellation	Rating 7.1 10,818 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $973	Free Cancellation	Rating 8.3 1,741 reviews	Search Japan 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.