Which airlines fly to Illinois?

Qantas Airways, United Airlines and Air New Zealand 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 37% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 8 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?

If you’re flying from a popular airport in Australia, such as Perth or Sydney, and flying into Illinois, then you can expect flight times to average 22h 20m and 28h 42m, respectively.

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

Qantas Airways, Etihad Airways, and Cathay Pacific are the most popular carriers operating from Australia to Illinois

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

Prices for flights from Australia to Illinois are updated daily.

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

As of September 2026, there are 7 operators available to choose from 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 licence, 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.

$183 Cheap Flights from Australia to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Australia to Illinois

Return

One-way

Last minute

Recent return flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

14:00 - 05:13SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 13m3 stops Nadi Los Angeles Los Angeles Las Vegas Harry Reid Intl

06:30 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

37h 05m3 stops Denver Intl Los Angeles Los Angeles Nadi

$1,275Multiple Airlines

Mon, 2 Nov - Mon, 9 Nov

14:00 - 05:13SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 13m3 stops Nadi Los Angeles Los Angeles Las Vegas Harry Reid Intl

06:30 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

37h 05m3 stops Denver Intl Los Angeles Los Angeles Nadi

$1,367Multiple Airlines

Mon, 2 Nov - Mon, 9 Nov

10:20 - 14:43SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 23m1 stop Vancouver Intl

21:20 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 00m2 stops Toronto Pearson Intl Vancouver Intl

$1,404Air Canada

Mon, 5 Oct - Tue, 20 Oct

10:20 - 09:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

38h 40m2 stops Vancouver Intl Toronto Pearson Intl

12:59 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

27h 21m2 stops Toronto Pearson Intl Vancouver Intl

$1,415Air Canada

Mon, 5 Oct - Tue, 20 Oct

12:15 - 12:30BNE Brisbane-ORD Chicago O'Hare Intl

40h 15m1 stop Hong Kong Intl

14:10 - 23:20ORD Chicago O'Hare Intl-BNE Brisbane

41h 10m1 stop Hong Kong Intl

$1,577Cathay Pacific

Mon, 22 Feb - Mon, 8 Mar

00:50 - 12:30BNE Brisbane-ORD Chicago O'Hare Intl

27h 40m1 stop Hong Kong Intl

14:10 - 23:20ORD Chicago O'Hare Intl-BNE Brisbane

41h 10m1 stop Hong Kong Intl

$1,578Cathay Pacific

Mon, 9 Nov - Tue, 24 Nov

14:05 - 17:55SYD Sydney Kingsford Smith-STL Lambert-St Louis

20h 50m1 stop Dallas/Fort Worth

06:00 - 09:00STL Lambert-St Louis-SYD Sydney Kingsford Smith

34h 00m1 stop Los Angeles Los Angeles

$1,617American Airlines

Tue, 3 Nov - Thu, 26 Nov

10:10 - 13:44SYD Sydney Kingsford Smith-STL Lambert-St Louis

43h 34m2 stops Los Angeles Los Angeles Phoenix Sky Harbor Intl

15:20 - 06:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

23h 35m1 stop Dallas/Fort Worth

$1,620American Airlines

Wed, 21 Oct - Sat, 24 Oct

07:30 - 22:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

31h 30m2 stops Auckland Intl Los Angeles Los Angeles

09:21 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

30h 14m2 stops Houston George Bush Intcntl Auckland Intl

$1,692Air New Zealand

Tue, 10 Nov - Tue, 17 Nov

07:30 - 19:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 25m2 stops Auckland Intl Houston George Bush Intcntl

12:42 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 53m2 stops San Francisco Auckland Intl

$1,835Air New Zealand

Tue, 27 Oct - Wed, 11 Nov

Recent last minute flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

09:30 - 05:38SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

35h 08m2 stops Los Angeles Los Angeles Las Vegas Harry Reid Intl

06:30 - 07:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 30m2 stops Denver Intl Los Angeles Los Angeles

$2,128Multiple Airlines

Tue, 22 Sep - Tue, 29 Sep

10:10 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

42h 45m1 stop Hong Kong Intl

16:15 - 11:45ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 30m1 stop Hong Kong Intl

$2,322Cathay Pacific

Tue, 22 Sep - Wed, 30 Sep

21:55 - 13:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

31h 00m1 stop Hong Kong Intl

16:15 - 06:10ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

46h 55m1 stop Hong Kong Intl

$2,381Cathay Pacific

Tue, 22 Sep - Tue, 29 Sep

07:25 - 13:55MEL Melbourne-ORD Chicago O'Hare Intl

45h 30m1 stop Hong Kong Intl

16:15 - 17:55ORD Chicago O'Hare Intl-MEL Melbourne

34h 40m2 stops Hong Kong Intl Perth

$2,545Multiple Airlines

Mon, 21 Sep - Sun, 27 Sep

09:10 - 14:20SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 10m1 stop Los Angeles Los Angeles

17:50 - 07:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 15m1 stop Los Angeles Los Angeles

$2,886Qantas Airways

Tue, 22 Sep - Wed, 30 Sep

09:20 - 09:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

38h 40m2 stops Vancouver Intl Toronto Pearson Intl

20:40 - 08:20ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 40m2 stops Toronto Pearson Intl Vancouver Intl

$2,968Air Canada

Fri, 25 Sep - Sun, 4 Oct

09:10 - 14:20SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 10m1 stop Los Angeles Los Angeles

17:53 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 12m1 stop Los Angeles Los Angeles

$2,968American Airlines

Fri, 25 Sep - Mon, 12 Oct

09:10 - 14:20SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 10m1 stop Los Angeles Los Angeles

18:55 - 08:05ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 10m1 stop Los Angeles Los Angeles

$2,968American Airlines

Fri, 25 Sep - Wed, 7 Oct

10:00 - 14:43BNE Brisbane-ORD Chicago O'Hare Intl

19h 43m1 stop Vancouver Intl

21:20 - 11:30ORD Chicago O'Hare Intl-BNE Brisbane

47h 10m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

$3,201Air Canada

Fri, 25 Sep - Sun, 4 Oct

06:00 - 15:53BNE Brisbane-ORD Chicago O'Hare Intl

24h 53m2 stops Sydney Kingsford Smith Los Angeles Los Angeles

15:20 - 05:00ORD Chicago O'Hare Intl-BNE Brisbane

22h 40m1 stop Los Angeles Los Angeles

$3,784Qantas Airways

Fri, 25 Sep - Sun, 4 Oct

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Philippine Airlines flights from Australia to Illinois

Our best Philippine Airlines deals on Australia to Illinois flight tickets

Philippine Airlines

9 Nov

PER08:35Perth

22h 20m

1 stop

ORD16:55Chicago O'Hare Intl

23 Nov

ORD22:45Chicago O'Hare Intl

42h 35m

1 stop

PER07:20Perth

$1,811

Philippine Airlines

16 Mar

SYD11:30Sydney Kingsford Smith

46h 25m

1 stop

ORD17:55Chicago O'Hare Intl

5 Apr

ORD23:45Chicago O'Hare Intl

43h 00m

1 stop

SYD09:45Sydney Kingsford Smith

$1,826

Philippine Airlines

9 Nov

PER08:35Perth

22h 20m

1 stop

ORD16:55Chicago O'Hare Intl

23 Nov

ORD22:45Chicago O'Hare Intl

42h 35m

1 stop

PER07:20Perth

$1,839

Air Canada flights from Australia to Illinois

Our best Air Canada deals on Australia to Illinois flight tickets

Air Canada

22 Oct

SYD10:20Sydney Kingsford Smith

22h 25m

1 stop

ORD16:45Chicago O'Hare Intl

26 Oct

ORD15:30Chicago O'Hare Intl

25h 05m

1 stop

SYD08:35Sydney Kingsford Smith

$1,362

Air Canada

22 Oct

SYD10:20Sydney Kingsford Smith

20h 23m

1 stop

ORD14:43Chicago O'Hare Intl

26 Oct

ORD12:50Chicago O'Hare Intl

27h 45m

2 stops

SYD08:35Sydney Kingsford Smith

$1,372

Air Canada

22 Oct

SYD10:20Sydney Kingsford Smith

25h 52m

2 stops

ORD20:12Chicago O'Hare Intl

26 Oct

ORD13:55Chicago O'Hare Intl

26h 40m

2 stops

SYD08:35Sydney Kingsford Smith

$1,377

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 2/11

14:00-05:13

3 stops32h 13m

Chicago O'Hare Intl

Mon 9/11

06:30-12:35

3 stops37h 05m

$1,275

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 2/11

14:00-05:13

3 stops32h 13m

Chicago O'Hare Intl

Mon 9/11

06:30-12:35

3 stops37h 05m

$1,367

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 5/10

10:20-14:43

1 stop20h 23m

Chicago O'Hare Intl

Tue 20/10

21:20-08:20

2 stops43h 00m

$1,404

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 5/10

10:20-09:00

2 stops38h 40m

Chicago O'Hare Intl

Tue 20/10

12:59-08:20

2 stops27h 21m

$1,415

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Mon 22/2

12:15-12:30

1 stop40h 15m

Chicago O'Hare Intl

Mon 8/3

14:10-23:20

1 stop41h 10m

$1,577

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Mon 9/11

00:50-12:30

1 stop27h 40m

Chicago O'Hare Intl

Tue 24/11

14:10-23:20

1 stop41h 10m

$1,578

Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 3/11

14:05-17:55

1 stop20h 50m

Lambert-St Louis

Thu 26/11

06:00-09:00

1 stop34h 00m

$1,617

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-13:44

2 stops43h 34m

Lambert-St Louis

Sat 24/10

15:20-06:55

1 stop23h 35m

$1,620

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 10/11

07:30-22:00

2 stops31h 30m

Chicago O'Hare Intl

Tue 17/11

09:21-08:35

2 stops30h 14m

$1,692

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Tue 27/10

07:30-19:55

2 stops28h 25m

Chicago O'Hare Intl

Wed 11/11

12:42-08:35

2 stops26h 53m

$1,835

Flights are sorted by cheapest return 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?

In general, May is the cheapest month to fly from Australia to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,600. If you’re not able to fly to Illinois in May, then March is your next best option. Flight prices from Australia to Illinois during March average around $1,605.

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 $2,014 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Australia for as low as $1,228 on momondo.

Can stopping save me money on Australia to Illinois flights?

You could potentially save up to 19% 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	$183
Fastest flight time	20h 50m
Direct flights	None

The best one-way flight to Illinois from Australia in the past 72 hours is $183. The best return flight deal from Australia to Illinois found on momondo in the last 72 hours is $1,275.

The fastest flight from Australia to Illinois takes 20h 50m

There are no direct flights from Australia to Illinois. There are no popular flight routes from Australia to Illinois.

Search flight deals

Frequently asked questions about flying from Australia to Illinois

When did momondo last update prices for flights from Australia to Illinois?
Prices for flights from Australia to Illinois are updated daily.
How many operators does momondo search for flights from Australia to Illinois?
As of September 2026, there are 7 operators available to choose from 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 licence, 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
American Airlines	PriceFrom $539	Free cancellation	Rating 7.0 12,087 reviews	Search American Airlines flights
Air Canada	PriceFrom $940	Free cancellation	Rating 7.1 11,652 reviews	Search Air Canada flights
United Airlines	PriceFrom $1,277	Free cancellation	Rating 7.4 10,232 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $1,304	Free cancellation	Rating 7.5 1,102 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,320	Free cancellation	Rating 8.0 669 reviews	Search Air New Zealand flights
Cathay Pacific	PriceFrom $1,670	Free cancellation	Rating 7.6 1,489 reviews	Search Cathay Pacific flights
Japan Airlines	PriceFrom $2,095	Free cancellation	Rating 8.3 1,915 reviews	Search Japan Airlines flights
Virgin Australia	PriceFrom $2,132	Free cancellation	Rating 7.6 476 reviews	Search Virgin Australia flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Australia to Illinois . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Illinois from Australia on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Australia.

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

Of course. momondo tracks the price of Australia to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.