Which airlines fly to Illinois?

Qantas Airways, Air New Zealand 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 30% 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.

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

Delta, EVA Air, and Qatar Airways are the most popular carriers operating from Australia to Illinois

How long is the flight from Australia to Illinois?

If you’re flying from a popular airport in Australia, such as Melbourne or Adelaide, and flying into Illinois, then you can expect flight times to average 23h 27m and 23h 55m, respectively.

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 July 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.

$638 Cheap Flights from Australia to Illinois in 2026

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.

13:15 - 06:17

SYD

ORD

32h 02m

2 stops

09:20 - 22:25

ORD

SYD

46h 05m

3 stops

$1,227Multiple Airlines

Tue, 25 Aug - Tue, 1 Sep

13:15 - 09:20

SYD

ORD

35h 05m

3 stops

06:20 - 11:50

ORD

SYD

38h 30m

3 stops

$1,270Multiple Airlines

Wed, 9 Sep - Sat, 19 Sep

09:20 - 10:16

SYD

ORD

39h 56m

2 stops

15:40 - 07:20

ORD

SYD

24h 40m

1 stop

$1,290Air Canada

Mon, 17 Aug - Mon, 31 Aug

09:20 - 10:16

SYD

ORD

39h 56m

2 stops

08:50 - 07:20

ORD

SYD

31h 30m

2 stops

$1,290Air Canada

Mon, 17 Aug - Mon, 31 Aug

11:20 - 18:43

SYD

STL

23h 23m

1 stop

16:39 - 07:00

STL

SYD

45h 21m

2 stops

$1,514United Airlines

Wed, 14 Oct - Sat, 7 Nov

09:20 - 14:13

SYD

STL

21h 53m

1 stop

17:55 - 07:00

STL

SYD

44h 05m

1 stop

$1,514United Airlines

Thu, 12 Nov - Mon, 16 Nov

09:10 - 22:59

SYD

STL

28h 49m

1 stop

06:00 - 07:05

STL

SYD

34h 05m

1 stop

$1,555Qantas Airways

Thu, 27 Aug - Thu, 10 Sep

11:20 - 00:45

SYD

STL

29h 25m

1 stop

06:00 - 09:00

STL

SYD

34h 00m

1 stop

$1,561Qantas Airways

Sun, 1 Nov - Tue, 24 Nov

11:20 - 19:15

SYD

STL

23h 55m

2 stops

06:00 - 09:00

STL

SYD

34h 00m

1 stop

$1,563American Airlines

Sun, 1 Nov - Tue, 24 Nov

11:20 - 18:15

SYD

STL

23h 55m

2 stops

19:05 - 06:55

STL

SYD

42h 50m

1 stop

$1,578American Airlines

Thu, 12 Nov - Mon, 16 Nov

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Cathay Pacific flights from Australia to Illinois

Our best Cathay Pacific deals on Australia to Illinois flight tickets

Cathay Pacific

3 Nov

BNE00:40Brisbane

28h 15m

1 stop

ORD12:55Chicago O'Hare Intl

6 Nov

ORD14:35Chicago O'Hare Intl

27h 55m

1 stop

BNE10:30Brisbane

$1,823

Cathay Pacific

19 Oct

BNE00:05Brisbane

28h 50m

1 stop

ORD13:55Chicago O'Hare Intl

27 Oct

ORD15:35Chicago O'Hare Intl

40h 35m

1 stop

BNE23:10Brisbane

$1,825

Cathay Pacific

24 Oct

BNE12:20Brisbane

40h 35m

1 stop

ORD13:55Chicago O'Hare Intl

27 Oct

ORD15:35Chicago O'Hare Intl

40h 35m

1 stop

BNE23:10Brisbane

$1,872

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

30 Nov

ORD22:45Chicago O'Hare Intl

42h 35m

1 stop

PER07:20Perth

$1,938

Philippine Airlines

9 Nov

PER08:35Perth

22h 20m

1 stop

ORD16:55Chicago O'Hare Intl

2 Dec

ORD22:45Chicago O'Hare Intl

42h 35m

1 stop

PER07:20Perth

$2,188

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 25/8

13:15-06:17

2 stops32h 02m

Chicago O'Hare Intl

Tue 1/9

09:20-22:25

3 stops46h 05m

$1,227

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 9/9

13:15-09:20

3 stops35h 05m

Chicago O'Hare Intl

Sat 19/9

06:20-11:50

3 stops38h 30m

$1,270

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 17/8

09:20-10:16

2 stops39h 56m

Chicago O'Hare Intl

Mon 31/8

15:40-07:20

1 stop24h 40m

$1,290

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 17/8

09:20-10:16

2 stops39h 56m

Chicago O'Hare Intl

Mon 31/8

08:50-07:20

2 stops31h 30m

$1,290

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 14/10

11:20-18:43

1 stop23h 23m

Lambert-St Louis

Sat 7/11

16:39-07:00

2 stops45h 21m

$1,514

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/11

09:20-14:13

1 stop21h 53m

Lambert-St Louis

Mon 16/11

17:55-07:00

1 stop44h 05m

$1,514

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 27/8

09:10-22:59

1 stop28h 49m

Lambert-St Louis

Thu 10/9

06:00-07:05

1 stop34h 05m

$1,555

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 1/11

11:20-00:45

1 stop29h 25m

Lambert-St Louis

Tue 24/11

06:00-09:00

1 stop34h 00m

$1,561

Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 1/11

11:20-19:15

2 stops23h 55m

Lambert-St Louis

Tue 24/11

06:00-09:00

1 stop34h 00m

$1,562

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/11

11:20-18:15

2 stops23h 55m

Lambert-St Louis

Mon 16/11

19:05-06:55

1 stop42h 50m

$1,578

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 $1,614. If you’re not able to fly to Illinois in May, then October is your next best option. Flight prices from Australia to Illinois during October average around $1,631.

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 $1,964 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 $1,472 on momondo.

Can stopping save me money on Australia to Illinois flights?

You could potentially save up to 8% 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	21h 53m
Direct flights	None

The fastest flight from Australia to Illinois takes 21h 53m

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 July 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 $599	Free cancellation	Rating 7.1 11,841 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,039	Free cancellation	Rating 7.5 1,073 reviews	Search Qantas Airways flights
Air Canada	PriceFrom $1,086	Free cancellation	Rating 7.1 11,404 reviews	Search Air Canada flights
United Airlines	PriceFrom $1,258	Free cancellation	Rating 7.4 10,050 reviews	Search United Airlines flights
Air New Zealand	PriceFrom $1,347	Free cancellation	Rating 8.0 656 reviews	Search Air New Zealand flights
Japan Airlines	PriceFrom $1,398	Free cancellation	Rating 8.3 1,884 reviews	Search Japan Airlines flights
Cathay Pacific	PriceFrom $1,705	Free cancellation	Rating 7.6 1,433 reviews	Search Cathay Pacific flights
Virgin Australia	PriceFrom $2,177	Free cancellation	Rating 7.6 466 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.