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Perth

$562+ Cheap flights from Illinois to Perth (PER)

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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,362
(Air Canada)

One-way from

$562
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$1,672
Provider with most accurate pricing for Chicago (CHI)-Perth flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Perth flights.
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From Illinois to Perth
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One-way flight from Illinois to Perth
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Highest demand for flights based on searches. 14% potential increase in price ($291 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($85 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 3, 2025.

This Trip.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/112:35 pmORD - PER
2 stops39h 00mMultiple Airlines
Tue 11/187:35 amPER - ORD
2 stops43h 20mMultiple Airlines
Deal found 11/1$1,155
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/113:00 pmORD - PER
2 stops31h 25mAmerican Airlines
Tue 11/188:00 amPER - ORD
2 stops29h 59mAmerican Airlines
Deal found 11/3$1,600
This Cathay Pacific deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:39 amSTL - PER
2 stops32h 16mCathay Pacific
Sun 11/1612:25 amPER - STL
2 stops36h 33mCathay Pacific
Deal found 11/2$1,652
This Qantas Airways deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:03 pmORD - PER
2 stops28h 22mQantas Airways
Tue 11/1810:55 pmPER - ORD
2 stops31h 00mQantas Airways
Deal found 11/2$1,682
This Ovago deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:03 pmORD - PER
2 stops33h 17mQantas Airways
Sat 11/223:20 pmPER - ORD
2 stops38h 48mQantas Airways
Deal found 11/3$1,705
This lol.travel deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/102:35 pmORD - PER
1 stop42h 20mCathay Pacific
Sun 11/238:30 amPER - ORD
1 stop42h 25mCathay Pacific
Deal found 11/2$1,749
This Booking.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:30 pmORD - PER
3 stops34h 15mMultiple Airlines
Sun 11/235:15 amPER - ORD
3 stops39h 10mMultiple Airlines
Deal found 11/2$1,756
This Qantas Airways deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:03 pmORD - PER
2 stops36h 17mQantas Airways
Tue 11/1810:55 pmPER - ORD
2 stops31h 00mQantas Airways
Deal found 11/1$1,760
This Qantas Airways deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:10 pmORD - PER
2 stops38h 05mQantas Airways
Sun 11/1610:40 pmPER - ORD
2 stops28h 59mQantas Airways
Deal found 11/1$1,768
This KAYAK deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:50 pmORD - PER
2 stops46h 05mSWISS
Thu 11/208:30 amPER - ORD
2 stops45h 50mSWISS
Deal found 11/1$1,778
This Qantas Airways deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:03 pmORD - PER
2 stops33h 57mQantas Airways
Mon 11/1710:55 pmPER - ORD
2 stops31h 00mQantas Airways
Deal found 11/1$1,782
This Qantas Airways deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:59 pmSTL - PER
2 stops39h 16mQantas Airways
Mon 11/175:45 pmPER - STL
2 stops36h 42mQantas Airways
Deal found 11/2$1,818

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Perth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Illinois to Perth that are best for you.

Fly from

Illinois

Fly to

Perth

Route

Depart

Return

Price

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Fri 1/30

3:40 pm-9:35 pm

2 stops39h 55m

Perth

Sat 2/21

3:15 pm-2:41 pm

2 stops37h 26m

$1,362

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 1/28

3:40 pm-9:35 pm

2 stops39h 55m

Perth

Tue 2/17

4:45 pm-2:41 pm

2 stops35h 56m

$1,433

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 11/13

7:00 am-6:55 am

2 stops33h 55m

Perth

Sun 11/16

12:25 am-10:58 pm

2 stops36h 33m

$1,652

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 11/17

6:03 pm-5:20 pm

2 stops33h 17m

Perth

Sat 11/22

3:20 pm-4:08 pm

2 stops38h 48m

$1,705

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 3/8

2:00 pm-2:30 pm

3 stops35h 30m

Perth

Sun 3/29

10:40 pm-2:43 pm

2 stops29h 03m

$1,765

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 11/13

6:03 pm-6:00 pm

2 stops33h 57m

Perth

Tue 11/18

10:55 pm-3:55 pm

2 stops31h 00m

$1,782

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 11/13

2:35 pm-6:55 am

1 stop26h 20m

Perth

Sun 11/16

5:35 am-11:30 am

3 stops43h 55m

$1,798

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 3/8

2:10 pm-11:55 pm

2 stops44h 45m

Perth

Sat 3/28

2:10 am-8:45 am

2 stops43h 35m

$1,801

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 1/28

8:45 am-2:45 pm

2 stops40h 00m

Perth

Mon 2/16

1:15 am-11:59 pm

2 stops36h 44m

$1,816

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 1/28

2:35 pm-10:55 pm

1 stop42h 20m

Perth

Mon 2/16

12:25 am-12:55 pm

1 stop26h 30m

$1,817

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 23 results
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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 round-trip 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, January is the cheapest month in which you can book a flight from Illinois to Perth (average of $1,180). Flying from Illinois to Perth in June is currently the most expensive (average of $2,077). 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.

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

Find hourly flight availability from Illinois to Perth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

It’s optimal to fly from Illinois to Perth in the evening. By choosing this option you can save up to 38% on the cost of your flight, compared to a flight in the afternoon.

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?

    If you book a flight to Perth from Illinois, you will be flying to Perth, which is the city’s only airport. Perth (PER) is located 6.3 mi from the center of Perth.

  • How long is the flight from Illinois to Perth?

    There are many flights that can get you from Illinois to Perth in 33h 17m. Fly via Air Canada, Cathay Pacific, or Qantas Airways to get the fastest option. Airlines will cover a distance of 10947 mi. This flight may include one or multiple 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 vacation 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, January is the cheapest month in which you can book a flight from Illinois to Perth (average of $1,180). Flying from Illinois to Perth in June is currently the most expensive (average of $2,077). 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.

See more FAQs

Traveling to a place near Perth?

Book flights to Perth if you plan to visit one of these locations
Fremantle
Rottnest Island
Scarborough

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Alternative routes for Illinois to Perth

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Illinois to Perth

Discover the top 3 airlines that operate flights from Illinois to Perth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,191Average$1,407FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,229Average$1,331FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,470Average$2,048FlexibilityNo cancel feeOn-time72%

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