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

Alaska Airlines, Philippine Airlines, and Turkish Airlines are the most popular carriers operating from Illinois to Australia

How long is the flight from Illinois to Australia?

The flight from Illinois to Australia depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Peoria (a popular airport in Illinois) to Sydney (the most popular airport in Australia), then the flight time is 21h 40m on average. If you fly from Chicago (another popular airport in Illinois) to Sydney, then the average flight time is 27h 41m.

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

Prices for flights from Illinois to Australia refresh daily.

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

As of November 2026, there is 1 operator available to choose from for flights from Illinois to Australia.

How old do you have to be to fly from Illinois to Australia?

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 Illinois to Australia.

What documentation or ID do you need to fly to Australia?

The travel and health documents required for your trip to Australia 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 Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$872 Cheap Flights from Illinois to Australia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Australia

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

22:45 - 07:20ORD Chicago O'Hare Intl-PER Perth

42h 35m1 stop Manila Ninoy Aquino Intl

08:40 - 17:55PER Perth-ORD Chicago O'Hare Intl

22h 15m1 stop Manila Ninoy Aquino Intl

$1,668Philippine Airlines

Fri, 5 Mar - Fri, 26 Mar

06:29 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne

32h 01m2 stops Los Angeles Manila Ninoy Aquino Intl

09:20 - 05:03MEL Melbourne-ORD Chicago O'Hare Intl

36h 43m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,685Multiple Airlines

Wed, 3 Mar - Sun, 7 Mar

05:40 - 09:30ORD Chicago O'Hare Intl-MEL Melbourne

34h 50m1 stop Los Angeles

13:35 - 07:05MEL Melbourne-ORD Chicago O'Hare Intl

34h 30m2 stops Nadi Los Angeles

$1,697Multiple Airlines

Wed, 24 Feb - Sat, 27 Feb

05:40 - 09:30ORD Chicago O'Hare Intl-MEL Melbourne

34h 50m1 stop Los Angeles

13:45 - 07:05MEL Melbourne-ORD Chicago O'Hare Intl

33h 20m2 stops Nadi Los Angeles

$1,703Multiple Airlines

Sat, 27 Feb - Tue, 16 Mar

05:40 - 12:25ORD Chicago O'Hare Intl-MEL Melbourne

37h 45m2 stops Los Angeles Nadi

13:35 - 00:26MEL Melbourne-ORD Chicago O'Hare Intl

27h 51m3 stops Nadi Los Angeles Denver Intl

$1,714Multiple Airlines

Wed, 24 Feb - Sat, 27 Feb

05:40 - 09:30ORD Chicago O'Hare Intl-MEL Melbourne

34h 50m1 stop Los Angeles

13:55 - 07:05MEL Melbourne-ORD Chicago O'Hare Intl

34h 10m2 stops Nadi Los Angeles

$1,723Multiple Airlines

Thu, 11 Feb - Fri, 26 Feb

06:29 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne

32h 01m2 stops Los Angeles Manila Ninoy Aquino Intl

09:20 - 22:55MEL Melbourne-ORD Chicago O'Hare Intl

30h 35m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,724Multiple Airlines

Wed, 3 Mar - Sun, 7 Mar

06:21 - 12:25ORD Chicago O'Hare Intl-MEL Melbourne

37h 04m3 stops Denver Intl Los Angeles Nadi

13:35 - 00:26MEL Melbourne-ORD Chicago O'Hare Intl

27h 51m3 stops Nadi Los Angeles Denver Intl

$1,730Multiple Airlines

Wed, 24 Feb - Sat, 27 Feb

18:45 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 15m1 stop Los Angeles

14:05 - 17:24SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 19m1 stop Dallas/Fort Worth

$2,325Qantas Airways

Mon, 1 Feb - Wed, 17 Feb

18:45 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 15m1 stop Los Angeles

11:15 - 16:58SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 43m1 stop Los Angeles

$2,325Qantas Airways

Mon, 1 Feb - Tue, 16 Feb

Cheap last-minute flights

Enter your travel dates to find the best prices.

21:35 - 21:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

55h 15m2 stops Houston George Bush Intcntl Auckland Intl

09:55 - 22:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

29h 05m2 stops Auckland Intl Los Angeles

$2,102Air New Zealand

Sat, 14 Nov - Fri, 20 Nov

21:35 - 21:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

55h 15m2 stops Houston George Bush Intcntl Auckland Intl

19:25 - 20:37SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

42h 12m2 stops Auckland Intl Los Angeles

$2,160Air New Zealand

Sat, 14 Nov - Fri, 20 Nov

18:50 - 17:30ORD Chicago O'Hare Intl-BNE Brisbane

30h 40m1 stop Doha Hamad Intl

21:55 - 14:30BNE Brisbane-ORD Chicago O'Hare Intl

32h 35m1 stop Doha Hamad Intl

$2,203Qatar Airways

Thu, 12 Nov - Wed, 25 Nov

18:50 - 08:20ORD Chicago O'Hare Intl-BNE Brisbane

45h 30m2 stops Doha Hamad Intl Melbourne

21:55 - 14:30BNE Brisbane-ORD Chicago O'Hare Intl

32h 35m1 stop Doha Hamad Intl

$2,229Qatar Airways

Thu, 12 Nov - Wed, 25 Nov

06:29 - 07:30ORD Chicago O'Hare Intl-MEL Melbourne

32h 01m2 stops Los Angeles Manila Ninoy Aquino Intl

09:20 - 16:55MEL Melbourne-ORD Chicago O'Hare Intl

24h 35m1 stop Manila Ninoy Aquino Intl

$2,273Multiple Airlines

Thu, 12 Nov - Wed, 25 Nov

07:05 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

30h 20m2 stops Atlanta Hartsfield-Jackson Los Angeles

06:00 - 06:14SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

41h 14m3 stops Melbourne Nadi Los Angeles

$2,300Multiple Airlines

Sat, 14 Nov - Fri, 20 Nov

07:05 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

32h 30m3 stops Atlanta Hartsfield-Jackson Los Angeles Auckland Intl

14:05 - 05:10SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 05m3 stops Auckland Intl Los Angeles Las Vegas Harry Reid Intl

$2,303Multiple Airlines

Sat, 14 Nov - Fri, 20 Nov

06:30 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

30h 55m2 stops Denver Intl Los Angeles

11:10 - 00:53SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 43m2 stops Los Angeles Denver Intl

$2,306Multiple Airlines

Thu, 12 Nov - Thu, 3 Dec

08:42 - 06:25ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 43m1 stop Los Angeles

11:10 - 16:42SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 32m1 stop Los Angeles

$2,396Qantas Airways

Sun, 15 Nov - Mon, 30 Nov

17:15 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 45m1 stop Los Angeles

11:10 - 16:42SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 32m1 stop Los Angeles

$2,529Qantas Airways

Sun, 15 Nov - Sun, 29 Nov

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Air New Zealand flights from Illinois to Australia

Our best Air New Zealand deals on Illinois to Australia flight tickets

Air New Zealand

2 Feb

ORD05:30Chicago O'Hare Intl

36h 30m

2 stops

BNE10:00Brisbane

9 Feb

BNE08:20Brisbane

28h 20m

2 stops

ORD20:40Chicago O'Hare Intl

$1,811

Air New Zealand

1 Feb

ORD19:50Chicago O'Hare Intl

46h 10m

2 stops

BNE10:00Brisbane

8 Feb

BNE08:20Brisbane

28h 18m

2 stops

ORD20:38Chicago O'Hare Intl

$1,825

Air New Zealand

19 Apr

ORD16:40Chicago O'Hare Intl

27h 25m

2 stops

BNE11:05Brisbane

28 Apr

BNE12:20Brisbane

25h 42m

2 stops

ORD23:02Chicago O'Hare Intl

$1,874

Alaska Airlines flights from Illinois to Australia

Our best Alaska Airlines deals on Illinois to Australia flight tickets

Alaska Airlines

18 Nov

ORD07:00Chicago O'Hare Intl

30h 25m

2 stops

SYD06:25Sydney Kingsford Smith

7 Dec

SYD11:15Sydney Kingsford Smith

35h 22m

2 stops

ORD05:37Chicago O'Hare Intl

$2,323

Alaska Airlines

18 Nov

ORD09:30Chicago O'Hare Intl

27h 55m

3 stops

SYD06:25Sydney Kingsford Smith

7 Dec

SYD11:15Sydney Kingsford Smith

35h 22m

2 stops

ORD05:37Chicago O'Hare Intl

$2,360

Alaska Airlines

15 Nov

ORD07:00Chicago O'Hare Intl

30h 25m

2 stops

SYD06:25Sydney Kingsford Smith

12 Dec

SYD11:15Sydney Kingsford Smith

35h 22m

2 stops

ORD05:37Chicago O'Hare Intl

$2,477

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoPerth

ORD Chicago O'Hare Intl - PER Perth

ORDPER

Chicago O'Hare Intl

Fri 5/3

22:45-07:20

1 stop42h 35m

Perth

Fri 26/3

08:40-17:55

1 stop22h 15m

$1,668

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Wed 3/3

06:29-07:30

2 stops32h 01m

Melbourne

Sun 7/3

09:20-05:03

2 stops36h 43m

$1,685

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Wed 24/2

05:40-09:30

1 stop34h 50m

Melbourne

Sat 27/2

13:35-07:05

2 stops34h 30m

$1,697

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Sat 27/2

05:40-09:30

1 stop34h 50m

Melbourne

Tue 16/3

13:45-07:05

2 stops33h 20m

$1,703

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Wed 24/2

05:40-12:25

2 stops37h 45m

Melbourne

Sat 27/2

13:35-00:26

3 stops27h 51m

$1,714

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Thu 11/2

05:40-09:30

1 stop34h 50m

Melbourne

Fri 26/2

13:55-07:05

2 stops34h 10m

$1,723

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Wed 3/3

06:29-07:30

2 stops32h 01m

Melbourne

Sun 7/3

09:20-22:55

2 stops30h 35m

$1,724

ChicagoMelbourne

ORD Chicago O'Hare Intl - MEL Melbourne

ORDMEL

Chicago O'Hare Intl

Wed 24/2

06:21-12:25

3 stops37h 04m

Melbourne

Sat 27/2

13:35-00:26

3 stops27h 51m

$1,730

Fastest return journey

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 1/2

18:45-09:00

1 stop21h 15m

Sydney Kingsford Smith

Wed 17/2

14:05-17:24

1 stop20h 19m

$2,325

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 1/2

18:45-09:00

1 stop21h 15m

Sydney Kingsford Smith

Tue 16/2

11:15-16:58

1 stop22h 43m

$2,325

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 Illinois to Australia

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 Australia?

In general, January is the cheapest month to fly from Illinois to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,716. If you don’t want to visit Australia in January, then you should wait until February to fly from Illinois, when ticket prices are also cheap, with an average price of $1,843.

How far in advance should I book a flight from Illinois to Australia?

You are more likely to see cheaper flights to Australia from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $2,204 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Illinois for as low as $1,630 on momondo.

Can stopping save me money on Illinois to Australia flights?

You could potentially save up to 8% on your flight if you consider stops on a Illinois to Australia flight.

Cheap Illinois to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Australia

Best price found	$872
Fastest flight time	19h 36m
Direct flights	None

The best one-way flight to Australia from Illinois in the past 72 hours is $872. The best return flight deal from Illinois to Australia found on momondo in the last 72 hours is $1,668.

The fastest flight from Illinois to Australia takes 19h 36m

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

Search flight deals

Frequently asked questions about flying from Illinois to Australia

When did momondo last update prices for flights from Illinois to Australia?
Prices for flights from Illinois to Australia refresh daily.
How many operators does momondo search for flights from Illinois to Australia?
As of November 2026, there is 1 operator available to choose from for flights from Illinois to Australia.
How old do you have to be to fly from Illinois to Australia?
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 Illinois to Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents required for your trip to Australia 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 Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Illinois to Australia

Compare and see reviews for airlines that fly from Illinois to Australia with momondo

Airline	Rating	Free cancellation	Price
Qantas Airways	PriceFrom $2,295	Free cancellation	Rating 7.5 1,123 reviews		Search Qantas Airways flights

Why use momondo?

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

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

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

Flights from Illinois to Australia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Australia from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Australia, momondo offers a useful price alert feature which will track prices for flights to Australia from Illinois and alert you when they change.