What airlines fly to Illinois?

American Airlines, Qantas Airways and United Airlines are the top three most popular airlines that fly to Illinois from Australia according to our data. American Airlines is the first choice among our users, with 41% 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.

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

Etihad Airways, EVA Air, 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 Brisbane (a popular airport in Australia) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 20h 34m on average. If you fly from Melbourne (another popular airport in Australia) to Chicago O'Hare Intl Airport, then the average flight time is 20h 59m.

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 July 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.

$388 Cheap Flights from Australia to Illinois in 2025

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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

10:20 am - 4:51 pmBNE-ORD

21h 31m2 stops

7:10 am - 7:45 amORD-BNE

33h 35m2 stops

$800Air Canada

Find Deal

Tue, Oct 7 - Tue, Oct 28

10:20 am - 10:07 pmBNE-ORD

26h 47m2 stops

3:40 pm - 7:45 amORD-BNE

25h 05m1 stop

$804Air Canada

Find Deal

Tue, Oct 7 - Tue, Oct 28

9:10 am - 7:09 pmSYD-STL

24h 59m2 stops

3:59 pm - 9:00 amSTL-SYD

24h 01m2 stops

$814American Airlines

Find Deal

Mon, Aug 18 - Sat, Nov 8

9:10 am - 8:18 pmSYD-STL

26h 08m2 stops

11:39 am - 9:00 amSTL-SYD

28h 21m2 stops

$818American Airlines

Find Deal

Mon, Aug 18 - Sat, Nov 8

9:30 am - 6:58 pmSYD-STL

24h 28m2 stops

11:05 am - 6:55 amSTL-SYD

28h 50m2 stops

$830United Airlines

Find Deal

Sun, Sep 14 - Sun, Sep 21

10:20 am - 4:45 pmSYD-STL

21h 25m1 stop

11:20 am - 7:00 amSTL-SYD

26h 40m1 stop

$834United Airlines

Find Deal

Mon, Aug 18 - Sat, Nov 8

2:45 pm - 11:04 pmSYD-ORD

24h 19m2 stops

6:20 am - 12:45 pmORD-SYD

38h 25m2 stops

$867

Find Deal

Sat, Oct 11 - Sun, Oct 12

5:00 am - 7:29 pmBNE-ORD

29h 29m3 stops

2:40 pm - 7:45 amORD-BNE

26h 05m2 stops

$869

Find Deal

Tue, Oct 7 - Tue, Oct 28

12:00 pm - 5:45 pmMEL-ORD

22h 45m1 stop

8:25 pm - 9:30 amORD-MEL

44h 05m1 stop

$1,078Qantas Airways

Find Deal

Tue, Jan 20 - Sat, Feb 21

10:10 am - 11:05 pmSYD-STL

28h 55m1 stop

6:25 am - 7:25 amSTL-SYD

32h 00m1 stop

$1,081Qantas Airways

Find Deal

Mon, Oct 13 - Sun, Dec 14

Air Canada flights from Australia to Illinois

Our best Air Canada deals on Australia to Illinois flight tickets

Air Canada

Oct 7

BNE10:20 amBrisbane

21h 31m

2 stops

ORD4:51 pmChicago O'Hare Intl

Oct 28

ORD7:10 amChicago O'Hare Intl

33h 35m

2 stops

BNE7:45 amBrisbane

$800

Find similar

Air Canada

Aug 7

SYD9:20 amSydney Kingsford Smith

20h 34m

1 stop

ORD2:54 pmChicago O'Hare Intl

Aug 20

ORD10:40 amChicago O'Hare Intl

29h 40m

2 stops

SYD7:20 amSydney Kingsford Smith

$803

Find similar

Air Canada

Oct 7

BNE10:20 amBrisbane

26h 47m

2 stops

ORD10:07 pmChicago O'Hare Intl

Oct 28

ORD3:40 pmChicago O'Hare Intl

25h 05m

1 stop

BNE7:45 amBrisbane

$804

Find similar

American Airlines flights from Australia to Illinois

Our best American Airlines deals on Australia to Illinois flight tickets

American Airlines

Aug 18

SYD9:10 amSydney Kingsford Smith

24h 59m

2 stops

STL7:09 pmLambert-St Louis

Nov 8

STL3:59 pmLambert-St Louis

24h 01m

2 stops

SYD9:00 amSydney Kingsford Smith

$814

Find similar

American Airlines

Aug 18

SYD9:10 amSydney Kingsford Smith

26h 08m

2 stops

STL8:18 pmLambert-St Louis

Nov 8

STL11:39 amLambert-St Louis

28h 21m

2 stops

SYD9:00 amSydney Kingsford Smith

$818

Find similar

American Airlines

Aug 18

SYD9:10 amSydney Kingsford Smith

21h 39m

2 stops

STL3:49 pmLambert-St Louis

Nov 8

STL9:38 amLambert-St Louis

30h 22m

2 stops

SYD9:00 amSydney Kingsford Smith

$820

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 10/7

10:20 am-4:51 pm

2 stops21h 31m

Chicago O'Hare Intl

Tue 10/28

7:10 am-7:45 am

2 stops33h 35m

$800

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 10/7

10:20 am-10:07 pm

2 stops26h 47m

Chicago O'Hare Intl

Tue 10/28

3:40 pm-7:45 am

1 stop25h 05m

$804

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 8/18

9:10 am-7:09 pm

2 stops24h 59m

Lambert-St Louis

Sat 11/8

3:59 pm-9:00 am

2 stops24h 01m

$814

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 8/18

9:10 am-8:18 pm

2 stops26h 08m

Lambert-St Louis

Sat 11/8

11:39 am-9:00 am

2 stops28h 21m

$818

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 9/14

9:30 am-6:58 pm

2 stops24h 28m

Lambert-St Louis

Sun 9/21

11:05 am-6:55 am

2 stops28h 50m

$830

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 8/18

10:20 am-4:45 pm

1 stop21h 25m

Lambert-St Louis

Sat 11/8

11:20 am-7:00 am

1 stop26h 40m

$834

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 10/11

2:45 pm-11:04 pm

2 stops24h 19m

Chicago O'Hare Intl

Sun 10/12

6:20 am-12:45 pm

2 stops38h 25m

$867

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 10/7

5:00 am-7:29 pm

3 stops29h 29m

Chicago O'Hare Intl

Tue 10/28

2:40 pm-7:45 am

2 stops26h 05m

$869

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Tue 1/20

12:00 pm-5:45 pm

1 stop22h 45m

Chicago O'Hare Intl

Sat 2/21

8:25 pm-9:30 am

1 stop44h 05m

$1,078

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/13

10:10 am-11:05 pm

1 stop28h 55m

Lambert-St Louis

Sun 12/14

6:25 am-7:25 am

1 stop32h 00m

$1,081

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 February. Flight prices, which tend to average around $747, 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 February, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $748.

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 $1,032 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 $840 on momondo.

Can stopping save me money on Australia to Illinois flights?

You could potentially save up to 34% 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

Best Price Found	$388
Fastest flight time	19h 34m
Direct flights	None
Airports in Illinois	3 airports

The best one-way flight to Illinois from Australia in the past 72 hours is $388. The best round-trip flight deal from Australia to Illinois found on momondo in the last 72 hours is $800.

The fastest flight from Australia to Illinois takes 19h 34m

There are no direct flights from Australia to Illinois. Popular non-direct routes for this connection are Brisbane Airport - Chicago O'Hare Intl Airport, Sydney Kingsford Smith Airport - Chicago O'Hare Intl Airport and Melbourne Airport - Chicago O'Hare Intl Airport.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

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 July 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 7.5 887 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $884	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air Canada	PriceFrom $985	Free Cancellation	Rating 7.1 9,851 reviews	Search Air Canada flights
United Airlines	PriceFrom $1,080	Free Cancellation	Rating 7.4 8,900 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.