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Perth

$505+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
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 August 20, 2025.

Round-trip from

$1,284
(Mytrip)

One-way from

$505
(Trip.com)

Popular in

September

Cheapest in

February

Average price

$1,848
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 ($283 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($78 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 20, 2025.

This Trip.com deal was found by Cheapflights users on 8/20. 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.
Mon 8/256:15 amORD - PER
2 stops40h 55mMultiple Airlines
Tue 9/97:50 amPER - ORD
2 stops34h 33mMultiple Airlines
Deal found 8/20$928
This Mytrip deal was found by Cheapflights users on 8/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/21:05 amORD - PER
2 stops35h 05mMultiple Airlines
Sun 9/75:10 amPER - ORD
3 stops43h 49mMultiple Airlines
Deal found 8/18$1,279
This oojo deal was found by Cheapflights users on 8/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:20 pmORD - PER
1 stop27h 35mQatar Airways
Thu 9/2510:45 pmPER - ORD
1 stop29h 05mQatar Airways
Deal found 8/19$1,289
This oojo deal was found by Cheapflights users on 8/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:00 amORD - PER
2 stops49h 55mMultiple Airlines
Wed 1/141:10 amPER - ORD
2 stops36h 49mMultiple Airlines
Deal found 8/17$1,290
This oojo deal was found by Cheapflights users on 8/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/137:20 pmORD - PER
1 stop34h 20mQatar Airways
Wed 9/2410:45 pmPER - ORD
1 stop29h 05mQatar Airways
Deal found 8/19$1,330
This oojo deal was found by Cheapflights users on 8/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/147:20 pmORD - PER
1 stop34h 20mQatar Airways
Thu 9/2510:45 pmPER - ORD
1 stop29h 05mQatar Airways
Deal found 8/19$1,372
This Booking.com deal was found by Cheapflights users on 8/20. 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 8/254:00 pmORD - PER
1 stop26h 45mCathay Pacific
Mon 9/812:10 amPER - ORD
1 stop27h 15mCathay Pacific
Deal found 8/20$1,378
This Gotogate deal was found by Cheapflights users on 8/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/34:00 pmORD - PER
1 stop26h 45mCathay Pacific
Sun 9/79:15 amPER - ORD
1 stop42h 10mCathay Pacific
Deal found 8/18$1,385
This oojo deal was found by Cheapflights users on 8/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/127:20 pmORD - PER
1 stop27h 35mQatar Airways
Fri 9/193:40 pmPER - ORD
1 stop36h 10mQatar Airways
Deal found 8/18$1,410
This oojo deal was found by Cheapflights users on 8/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:00 amSTL - PER
2 stops47h 40mQatar Airways
Wed 9/2410:45 pmPER - STL
2 stops34h 40mQatar Airways
Deal found 8/18$1,446
This Cathay Pacific deal was found by Cheapflights users on 8/18. 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 11/138:40 amSTL - PER
2 stops48h 10mCathay Pacific
Sun 11/1612:15 amPER - STL
2 stops37h 27mCathay Pacific
Deal found 8/18$1,448
This Travelocity deal was found by Cheapflights users on 8/18. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/179:56 amSTL - PER
2 stops32h 49mMultiple Airlines
Wed 9/243:30 pmPER - STL
3 stops60h 48mMultiple Airlines
Deal found 8/18$1,521

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 August 20, 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

Mon 8/25

6:15 am-12:10 pm

2 stops40h 55m

Perth

Tue 9/9

7:50 am-5:23 am

2 stops34h 33m

$928

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 9/2

1:05 am-1:10 am

2 stops35h 05m

Perth

Sun 9/7

5:10 am-11:59 am

3 stops43h 49m

$1,279

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 9/18

7:20 pm-11:55 am

1 stop27h 35m

Perth

Thu 9/25

10:45 pm-2:50 pm

1 stop29h 05m

$1,289

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 11/15

8:00 am-11:55 pm

2 stops49h 55m

Perth

Wed 1/14

1:10 am-11:59 pm

2 stops36h 49m

$1,290

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 9/13

7:20 pm-6:40 pm

1 stop34h 20m

Perth

Wed 9/24

10:45 pm-2:50 pm

1 stop29h 05m

$1,330

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 9/13

7:20 pm-6:40 pm

1 stop34h 20m

Perth

Thu 9/25

10:45 pm-2:50 pm

1 stop29h 05m

$1,330

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 9/14

7:20 pm-6:40 pm

1 stop34h 20m

Perth

Thu 9/25

10:45 pm-2:50 pm

1 stop29h 05m

$1,372

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 8/25

4:00 pm-7:45 am

1 stop26h 45m

Perth

Mon 9/8

12:10 am-2:25 pm

1 stop27h 15m

$1,378

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 9/3

4:00 pm-7:45 am

1 stop26h 45m

Perth

Sun 9/7

9:15 am-2:25 pm

1 stop42h 10m

$1,385

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Wed 9/17

6:00 am-6:40 pm

2 stops47h 40m

Perth

Wed 9/24

10:45 pm-8:25 pm

2 stops34h 40m

$1,446

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 19 results
1
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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, February is the cheapest month in which you can book a flight from Illinois to Perth (average of $1,456). Flying from Illinois to Perth in December is currently the most expensive (average of $2,172). 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 August 20, 2025.

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.

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 27h 35m. Fly via Qatar Airways or Cathay Pacific 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, February is the cheapest month in which you can book a flight from Illinois to Perth (average of $1,456). Flying from Illinois to Perth in December is currently the most expensive (average of $2,172). 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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Cleveland to Perth flights

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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,191Average$1,522FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,229Average$1,477FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,470Average$1,568FlexibilityNo cancel feeOn-time72%

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