How long is the flight from Illinois to Perth?

There are many flights that can get you from Illinois to Perth in 27h 10m. Fly via Qatar Airways or Cathay Pacific to get the fastest option. Illinois and Perth are separated by a distance of 17617 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops. Find deals

In terms of precipitation, rainfall in Perth ranges from 0.0 - 170.0 inches per month. June is typically the wettest month, when rainfall can reach 170.0 mm. January is typically the driest time to visit Perth when rainfall is around 0.0 mm. Find deals

If weather is an important factor for your trip to Perth, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 12.0 C). Find deals

What is the cheapest month to fly from Illinois to Perth?

The best pricing can be found in the month of February. Prices to Perth from Illinois average $2,523. You can even find prices in February for less than $2,523, as users have found deals to Perth from as low as $1,785. The month of September appears to be one of the more expensive times to travel to Perth from Illinois. Flying in the targeted month can save you up to 50%.

What is the cheapest time of day to fly from IL to PER?

When flying from Illinois to Perth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Perth from Illinois?

Perth (PER) is the airport you will fly into if you book a flight from Illinois to Perth. It is only a 10.2 km journey from Perth (PER) to Perth’s city centre.

Can I find deals for flights from Illinois to Perth that include hotel bookings?

Yes. In addition to deals on Illinois to Perth flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Illinois to Perth?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Perth.

Can I find deals for business class flights from Illinois to Perth?

Yes. Cheapflights offers flight deals from Illinois to Perth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$795+ Flights from Illinois to Perth

Cheap flight deals from Illinois to Perth

Round-trip from	$1,695
One-way from	$795
Popular in	September
Cheapest in	February
Average price	$3,800

29/10-20/11
4 total stops
93h 05m total
Illinois to Perth

Search Deals

17/9
2 total stops
48h 50m total
Illinois to Perth

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($612 potential increase over avg. return price).

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Cheapest flight prices on average. 4% potential price decrease ($177 potential savings vs. average return price).

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Average for round-trip flights in September 2025

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Find flight deals from Illinois to Perth

Cheapest flights from Illinois to Perth
Explore the most affordable flight options available from Illinois to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Wed 29/1015:40ORD - PER

2 stops47h 40mMultiple Airlines

Thu 20/1105:35PER - ORD

2 stops45h 25mMultiple Airlines

Deal found 12/9$1,695

Sun 14/916:00ORD - PER

2 stops39h 40mMultiple Airlines

Mon 29/918:25PER - ORD

2 stops57h 00mMultiple Airlines

Deal found 10/9$1,862

Sat 13/916:00ORD - PER

2 stops39h 40mMultiple Airlines

Mon 29/918:25PER - ORD

2 stops57h 00mMultiple Airlines

Deal found 10/9$1,897

Thu 6/1118:50ORD - PER

1 stop27h 10mQatar Airways

Thu 20/1122:45PER - ORD

1 stop29h 45mQatar Airways

Deal found 10/9$1,959

Mon 15/919:20ORD - PER

1 stop34h 20mQatar Airways

Thu 25/922:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 11/9$1,965

Mon 15/919:20ORD - PER

1 stop34h 20mQatar Airways

Wed 24/922:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 11/9$1,978

Sun 14/919:20ORD - PER

1 stop34h 20mQatar Airways

Mon 29/922:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 10/9$1,983

Sun 26/1019:50ORD - PER

1 stop33h 55mQatar Airways

Sun 2/1122:45PER - ORD

1 stop29h 45mQatar Airways

Deal found 11/9$2,024

Sun 14/919:20ORD - PER

1 stop34h 20mQatar Airways

Sun 28/922:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 10/9$2,042

Mon 15/919:20ORD - PER

1 stop34h 20mQatar Airways

Wed 1/1022:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 10/9$2,049

Mon 27/1019:50ORD - PER

1 stop33h 55mQatar Airways

Tue 18/1122:45PER - ORD

1 stop29h 45mQatar Airways

Deal found 12/9$2,051

Sat 25/1006:39STL - PER

2 stops35h 41mMultiple Airlines

Sat 1/1108:40PER - STL

2 stops53h 02mMultiple Airlines

Deal found 10/9$2,156

Best flights from Illinois to Perth
Discover carefully curated flight deals from Illinois to Perth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.

Sun 26/1012:00ORD - PER

2 stops28h 35mMultiple Airlines

Sun 2/1114:35PER - ORD

2 stops29h 55mMultiple Airlines

Deal found 11/9$2,152

Wed 28/118:50ORD - PER

1 stop27h 10mQatar Airways

Mon 16/202:25PER - ORD

2 stops50h 05mQatar Airways

Deal found 11/9$2,168

Mon 27/1008:42STL - PER

2 stops33h 13mCathay Pacific

Sun 2/1100:15PER - STL

2 stops36h 43mCathay Pacific

Deal found 12/9$2,282

Sat 25/1006:39STL - PER

2 stops35h 41mMultiple Airlines

Sat 1/1108:40PER - STL

2 stops53h 02mMultiple Airlines

Deal found 10/9$2,156

Thu 30/1019:50ORD - PER

1 stop33h 55mQatar Airways

Thu 20/1122:45PER - ORD

1 stop29h 45mQatar Airways

Deal found 12/9$2,170

Wed 29/1015:40ORD - PER

1 stop26h 15mCathay Pacific

Sun 16/1100:15PER - ORD

1 stop26h 45mCathay Pacific

Deal found 12/9$2,349

Tue 28/1019:50ORD - PER

1 stop33h 55mQatar Airways

Sun 23/1115:05PER - ORD

1 stop37h 25mQatar Airways

Deal found 12/9$2,230

Mon 27/1007:00STL - PER

2 stops46h 45mMultiple Airlines

Mon 3/1122:45PER - STL

2 stops54h 33mMultiple Airlines

Deal found 12/9$2,271

Thu 13/1108:39STL - PER

2 stops48h 11mCathay Pacific

Sun 16/1100:15PER - STL

2 stops36h 43mCathay Pacific

Deal found 9/9$2,384

Mon 27/1019:50ORD - PER

1 stop33h 55mQatar Airways

Sun 16/1122:45PER - ORD

1 stop29h 45mQatar Airways

Deal found 12/9$2,230

Thu 6/1120:41ORD - PER

2 stops68h 39mMultiple Airlines

Thu 20/1108:40PER - ORD

2 stops35h 16mMultiple Airlines

Deal found 12/9$2,351

Sun 26/1019:50ORD - PER

1 stop33h 55mQatar Airways

Sat 1/1102:25PER - ORD

2 stops50h 05mQatar Airways

Deal found 11/9$2,232

Last-minute flights from Illinois to Perth
Discover last-minute flight deals from Illinois to Perth. Data last updated 12 September 2025 and is based on user searches.

Sat 13/916:00ORD - PER

2 stops39h 40mMultiple Airlines

Mon 29/918:25PER - ORD

2 stops57h 00mMultiple Airlines

Deal found 10/9$1,897

Sun 14/916:00ORD - PER

2 stops39h 40mMultiple Airlines

Mon 29/918:25PER - ORD

2 stops57h 00mMultiple Airlines

Deal found 10/9$1,862

Sun 14/919:20ORD - PER

1 stop34h 20mQatar Airways

Mon 29/922:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 10/9$1,983

Sun 14/919:20ORD - PER

1 stop34h 20mQatar Airways

Sun 28/922:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 10/9$2,042

Mon 15/919:20ORD - PER

1 stop34h 20mQatar Airways

Thu 25/922:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 11/9$1,965

Mon 15/919:20ORD - PER

1 stop34h 20mQatar Airways

Wed 24/922:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 11/9$1,978

Mon 15/919:20ORD - PER

1 stop34h 20mQatar Airways

Wed 1/1022:45PER - ORD

1 stop29h 05mQatar Airways

Deal found 10/9$2,049

Mon 15/919:20ORD - PER

1 stop34h 20mQatar Airways

Tue 23/916:10PER - ORD

1 stop35h 40mQatar Airways

Deal found 11/9$2,055

Sat 25/1006:39STL - PER

2 stops35h 41mMultiple Airlines

Sat 1/1108:40PER - STL

2 stops53h 02mMultiple Airlines

Deal found 10/9$2,156

Sun 26/1019:50ORD - PER

1 stop33h 55mQatar Airways

Sun 2/1122:45PER - ORD

1 stop29h 45mQatar Airways

Deal found 11/9$2,024

Mon 27/1007:00STL - PER

2 stops46h 45mMultiple Airlines

Mon 3/1122:45PER - STL

2 stops54h 33mMultiple Airlines

Deal found 12/9$2,271

Mon 27/1008:42STL - PER

2 stops33h 13mCathay Pacific

Sun 2/1100:15PER - STL

2 stops36h 43mCathay Pacific

Deal found 12/9$2,282

One-way flights from Illinois to Perth
Search for one-way flight options from Illinois to Perth. Find affordable one-way fares based on user searches. Data last updated 12 September 2025.

Wed 17/916:00ORD - PER

2 stops48h 50mMultiple Airlines

Deal found 11/9$795

Tue 23/916:00ORD - PER

2 stops44h 20mMultiple Airlines

Deal found 10/9$804

Wed 17/916:00ORD - PER

1 stop26h 45mCathay Pacific

Deal found 11/9$1,535

Tue 23/911:50ORD - PER

1 stop43h 10mANA

Deal found 10/9$1,677

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 26/10

12:00-05:35

2 stops28h 35m

Perth

Sun 2/11

14:35-07:30

2 stops29h 55m

$2,152

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 25/10

06:39-07:20

2 stops35h 41m

Perth

Sat 1/11

08:40-00:42

2 stops53h 02m

$2,156

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 28/1

18:50-12:00

1 stop27h 10m

Perth

Mon 16/2

02:25-14:30

2 stops50h 05m

$2,168

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 30/10

19:50-18:45

1 stop33h 55m

Perth

Thu 20/11

22:45-14:30

1 stop29h 45m

$2,170

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 28/10

19:50-18:45

1 stop33h 55m

Perth

Sun 23/11

15:05-14:30

1 stop37h 25m

$2,230

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 27/10

19:50-18:45

1 stop33h 55m

Perth

Sun 16/11

22:45-14:30

1 stop29h 45m

$2,230

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 26/10

19:50-18:45

1 stop33h 55m

Perth

Sat 1/11

02:25-15:30

2 stops50h 05m

$2,232

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 27/10

07:00-18:45

2 stops46h 45m

Perth

Mon 3/11

22:45-15:18

2 stops54h 33m

$2,271

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 27/10

08:42-06:55

2 stops33h 13m

Perth

Sun 2/11

00:15-22:58

2 stops36h 43m

$2,282

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 27/10

19:50-18:45

1 stop33h 55m

Perth

Thu 20/11

16:15-14:30

2 stops36h 15m

$2,345

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 20 results

Best time to book a flight from Illinois to Perth

Have a flexible travel schedule? Discover the best time to fly to Perth from Illinois with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Perth

What is the cheapest month to book a flight from Illinois to Perth?

Currently, May is the cheapest month in which you can book a flight from Illinois to Perth (average of $286). Flying from Illinois to Perth in December is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

What airport do you fly into for flights to Perth from Illinois?
Perth (PER) is the airport you will fly into if you book a flight from Illinois to Perth. It is only a 10.2 km journey from Perth (PER) to Perth’s city centre.
How long is the flight from Illinois to Perth?
There are many flights that can get you from Illinois to Perth in 27h 10m. Fly via Qatar Airways or Cathay Pacific to get the fastest option. Illinois and Perth are separated by a distance of 17617 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from Illinois to Perth that include hotel bookings?
Yes. In addition to deals on Illinois to Perth flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Illinois to Perth?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Perth.
Can I find deals for business class flights from Illinois to Perth?
Yes. Cheapflights offers flight deals from Illinois to Perth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Illinois to Perth?
Currently, May is the cheapest month in which you can book a flight from Illinois to Perth (average of $286). Flying from Illinois to Perth in December is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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How does Cheapflights help users find flights from Illinois to Perth?

When you search for this flight from Illinois to Perth, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Illinois to Perth?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Illinois to Perth for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Illinois to Perth with no change fees?

Need flexible booking options for your flight to Perth from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Illinois to Perth become cheaper?

Yes! Start tracking prices for Illinois to Perth flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Illinois to Perth from $795

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Perth

Keep the following information in mind while searching for Illinois to Perth flight deals. Data was last updated 12 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Illinois to Perth

Cheapest flights from Illinois to PerthExplore the most affordable flight options available from Illinois to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Explore the most affordable flight options available from Illinois to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Perth that are best for you.

Best time to book a flight from Illinois to Perth

Have a flexible travel schedule? Discover the best time to fly to Perth from Illinois with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Perth

What is the cheapest month to book a flight from Illinois to Perth?

Related info for your journey

Find useful and relevant information for your journey from Illinois to Perth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Perth from Illinois?

How long is the flight from Illinois to Perth?

Can I find deals for flights from Illinois to Perth that include hotel bookings?

How can I find direct flights from Illinois to Perth?

Can I find deals for business class flights from Illinois to Perth?

What is the cheapest month to book a flight from Illinois to Perth?

Travelling to a place near Perth?

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Alternative routes for Illinois to Perth

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How does Cheapflights help users find flights from Illinois to Perth?

Why should you use Cheapflights to find cheap flight tickets from Illinois to Perth?

Can Cheapflights find flights from Illinois to Perth with no change fees?

Can Cheapflights notify me if prices for flights from Illinois to Perth become cheaper?

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Cheapest flights from Illinois to Perth
Explore the most affordable flight options available from Illinois to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.