Which airlines fly to Illinois?

Qantas Airways, Air Canada and United Airlines 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 60% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 10 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 Brisbane or Sydney, and flying into Illinois, then you can expect flight times to average 19h 10m and 24h 36m, respectively.

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

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 August 2025, there are 10 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.

$662 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 return flight deals from Australia to Illinois

10:20 - 15:00BNE-ORD

19h 40m1 stop

10:00 - 07:45ORD-BNE

30h 45m2 stops

$1,124Air Canada

Find Deal

Tue, 7 Oct - Tue, 28 Oct

10:20 - 19:29BNE-ORD

24h 09m2 stops

10:00 - 07:45ORD-BNE

30h 45m2 stops

$1,127Air Canada

Find Deal

Tue, 7 Oct - Tue, 28 Oct

09:10 - 19:09SYD-STL

24h 59m2 stops

14:17 - 09:00STL-SYD

25h 43m2 stops

$1,257American Airlines

Find Deal

Mon, 18 Aug - Sat, 8 Nov

09:10 - 18:29SYD-STL

24h 19m2 stops

08:40 - 09:00STL-SYD

31h 20m2 stops

$1,259American Airlines

Find Deal

Mon, 18 Aug - Sat, 8 Nov

11:30 - 21:58MEL-STL

27h 28m2 stops

14:45 - 10:00STL-MEL

26h 15m2 stops

$1,271United Airlines

Find Deal

Sat, 13 Dec - Fri, 2 Jan

10:55 - 16:33MEL-STL

44h 38m2 stops

15:23 - 07:30STL-MEL

49h 07m2 stops

$1,273United Airlines

Find Deal

Thu, 18 Sep - Thu, 25 Sep

12:00 - 17:45MEL-ORD

21h 45m1 stop

15:00 - 09:30ORD-MEL

25h 30m1 stop

$1,599Qantas Airways

Find Deal

Thu, 30 Oct - Tue, 4 Nov

16:05 - 19:30MEL-STL

20h 25m1 stop

13:20 - 05:00STL-MEL

22h 40m1 stop

$1,599Qantas Airways

Find Deal

Mon, 10 Nov - Mon, 1 Dec

09:55 - 05:01SYD-ORD

34h 06m2 stops

14:25 - 10:35ORD-SYD

29h 10m2 stops

$1,610Air New Zealand

Find Deal

Mon, 1 Sep - Wed, 24 Sep

11:50 - 22:59SYD-ORD

26h 09m2 stops

15:35 - 10:35ORD-SYD

28h 00m2 stops

$1,611Air New Zealand

Find Deal

Sat, 16 Aug - Mon, 25 Aug

Air Canada flights from Australia to Illinois

Our best Air Canada deals on Australia to Illinois flight tickets

Air Canada

7 Oct

BNE10:20Brisbane

19h 40m

1 stop

ORD15:00Chicago O'Hare Intl

28 Oct

ORD10:00Chicago O'Hare Intl

30h 45m

2 stops

BNE07:45Brisbane

$1,124

Find similar

Air Canada

7 Oct

BNE10:20Brisbane

24h 09m

2 stops

ORD19:29Chicago O'Hare Intl

28 Oct

ORD10:00Chicago O'Hare Intl

30h 45m

2 stops

BNE07:45Brisbane

$1,127

Find similar

Air Canada

7 Aug

BNE10:20Brisbane

37h 49m

2 stops

ORD09:09Chicago O'Hare Intl

20 Aug

ORD08:40Chicago O'Hare Intl

31h 25m

2 stops

BNE07:05Brisbane

$1,138

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

1 Sept

SYD09:55Sydney Kingsford Smith

34h 06m

2 stops

ORD05:01Chicago O'Hare Intl

24 Sept

ORD14:25Chicago O'Hare Intl

29h 10m

2 stops

SYD10:35Sydney Kingsford Smith

$1,610

Find similar

Air New Zealand

16 Aug

SYD11:50Sydney Kingsford Smith

26h 09m

2 stops

ORD22:59Chicago O'Hare Intl

25 Aug

ORD15:35Chicago O'Hare Intl

28h 00m

2 stops

SYD10:35Sydney Kingsford Smith

$1,611

Find similar

Air New Zealand

20 Aug

SYD11:50Sydney Kingsford Smith

26h 25m

2 stops

ORD23:15Chicago O'Hare Intl

23 Aug

ORD16:10Chicago O'Hare Intl

25h 35m

2 stops

SYD08:45Sydney Kingsford Smith

$1,622

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 7/10

10:20-15:00

1 stop19h 40m

Chicago O'Hare Intl

Tue 28/10

10:00-07:45

2 stops30h 45m

$1,124

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 7/10

10:20-19:29

2 stops24h 09m

Chicago O'Hare Intl

Tue 28/10

10:00-07:45

2 stops30h 45m

$1,127

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:10-19:09

2 stops24h 59m

Lambert-St Louis

Sat 8/11

14:17-09:00

2 stops25h 43m

$1,257

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:10-18:29

2 stops24h 19m

Lambert-St Louis

Sat 8/11

08:40-09:00

2 stops31h 20m

$1,259

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sat 13/12

11:30-21:58

2 stops27h 28m

Lambert-St Louis

Fri 2/1

14:45-10:00

2 stops26h 15m

$1,271

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 18/9

10:55-16:33

2 stops44h 38m

Lambert-St Louis

Thu 25/9

15:23-07:30

2 stops49h 07m

$1,273

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Thu 30/10

12:00-17:45

1 stop21h 45m

Chicago O'Hare Intl

Tue 4/11

15:00-09:30

1 stop25h 30m

$1,599

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 10/11

16:05-19:30

1 stop20h 25m

Lambert-St Louis

Mon 1/12

13:20-05:00

1 stop22h 40m

$1,599

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 1/9

09:55-05:01

2 stops34h 06m

Chicago O'Hare Intl

Wed 24/9

14:25-10:35

2 stops29h 10m

$1,610

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 16/8

11:50-22:59

2 stops26h 09m

Chicago O'Hare Intl

Mon 25/8

15:35-10:35

2 stops28h 00m

$1,611

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, February 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 $1,155. If you’re not able to fly to Illinois in February, then May is your next best option. Flight prices from Australia to Illinois during May average around $1,157.

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

On average, the least expensive day to fly to Illinois from Australia is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,736. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $2,044. These prices are subject to change though, so be sure to set up a Price Alert for flights to Illinois.

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

According to our data, the cheapest time of day to fly to Illinois is in the afternoon. momondo users have found flights departing from Australia to Illinois in the afternoon for as low as $1,733. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Illinois are more costly in the morning, with an average ticket price of $1,918. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,596 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 $1,299 on momondo.

Can stopping save me money on Australia to Illinois flights?

You could potentially save up to 1% 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	$662
Fastest flight time	19h 10m
Direct flights	None
Airports in Illinois	3 airports

The best one-way flight to Illinois from Australia in the past 72 hours is $662. The best return flight deal from Australia to Illinois found on momondo in the last 72 hours is $1,124.

The fastest flight from Australia to Illinois takes 19h 10m

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 are updated daily.
How many operators does momondo search for flights from Australia to Illinois?
As of August 2025, there are 10 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
Qantas Airways	PriceFrom $984	Free cancellation	Rating 7.5 887 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,188	Free cancellation	Rating 7.9 502 reviews	Search Air New Zealand flights
American Airlines	PriceFrom $1,195	Free cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air Canada	PriceFrom $1,278	Free cancellation	Rating 7.1 9,890 reviews	Search Air Canada flights
United Airlines	PriceFrom $1,380	Free cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $1,504	Free cancellation	Rating 7.6 953 reviews	Search Cathay Pacific flights
ANA	PriceFrom $1,625	Free cancellation	Rating 8.4 924 reviews	Search ANA flights
Virgin Australia	PriceFrom $1,782	Free cancellation	Rating 7.5 411 reviews	Search Virgin Australia flights
Japan Airlines	PriceFrom $2,032	Free cancellation	Rating 8.3 1,544 reviews	Search Japan Airlines flights
Qatar Airways	PriceFrom $2,524	Free cancellation	Rating 7.4 3,608 reviews	Search Qatar Airways 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.