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Perth

$594+ 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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$1,071
(Trip.com)

One-way from

$594
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$2,520
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. 15% potential increase in price ($310 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($84 potential savings vs. average RT 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 September 17, 2025.

This Trip.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/303:35 pmORD - PER
2 stops47h 45mMultiple Airlines
Thu 11/65:35 amPER - ORD
2 stops45h 20mMultiple Airlines
Deal found 9/15$1,071
This Trip.com deal was found by Cheapflights users on 9/16. 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.
Fri 11/142:35 pmORD - PER
2 stops47h 45mMultiple Airlines
Sun 11/235:35 amPER - ORD
2 stops69h 20mMultiple Airlines
Deal found 9/16$1,092
This Trip.com deal was found by Cheapflights users on 9/16. 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.
Sat 11/13:35 pmORD - PER
2 stops36h 00mMultiple Airlines
Sat 11/85:35 amPER - ORD
2 stops45h 20mMultiple Airlines
Deal found 9/16$1,243
This oojo deal was found by Cheapflights users on 9/15. 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 10/307:50 pmORD - PER
1 stop33h 55mQatar Airways
Wed 11/1210:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/15$1,304
This oojo deal was found by Cheapflights users on 9/15. 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 10/307:50 pmORD - PER
1 stop33h 55mQatar Airways
Thu 11/610:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/15$1,310
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:50 pmORD - PER
1 stop27h 10mQatar Airways
Mon 11/2410:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/16$1,314
This oojo deal was found by Cheapflights users on 9/16. 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 10/317:50 pmORD - PER
1 stop33h 55mQatar Airways
Fri 11/710:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/16$1,349
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:50 pmORD - PER
1 stop27h 10mQatar Airways
Sun 11/2310:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/16$1,353
This Gotogate deal was found by Cheapflights users on 9/16. 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.
Thu 11/66:50 pmORD - PER
1 stop27h 10mQatar Airways
Wed 11/1910:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/16$1,357
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:50 pmORD - PER
1 stop33h 55mQatar Airways
Mon 11/2410:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/16$1,358
This Ovago deal was found by Cheapflights users on 9/16. 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.
Wed 11/126:50 pmORD - PER
1 stop27h 10mQatar Airways
Mon 11/2410:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/16$1,359
This Ovago deal was found by Cheapflights users on 9/16. 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.
Thu 11/136:50 pmORD - PER
1 stop33h 55mQatar Airways
Fri 11/2110:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 9/16$1,363

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 September 17, 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

Thu 11/13

6:50 pm-12:00 pm

1 stop27h 10m

Perth

Thu 11/20

3:05 pm-2:30 pm

1 stop37h 25m

$1,435

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 10/30

7:50 pm-6:45 pm

1 stop33h 55m

Perth

Thu 11/6

4:15 pm-2:30 pm

2 stops36h 15m

$1,441

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 11/12

6:50 pm-12:00 pm

1 stop27h 10m

Perth

Sat 11/22

10:45 pm-2:30 pm

1 stop29h 45m

$1,475

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Fri 10/31

10:13 am-6:45 pm

2 stops43h 32m

Perth

Fri 11/7

10:45 pm-11:56 pm

2 stops39h 11m

$1,547

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 11/16

6:50 pm-1:25 am

2 stops40h 35m

Perth

Mon 11/24

10:45 pm-2:30 pm

1 stop29h 45m

$1,551

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 11/12

6:50 pm-1:25 am

2 stops40h 35m

Perth

Mon 11/24

10:45 pm-2:30 pm

1 stop29h 45m

$1,551

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 11/13

2:35 pm-6:55 am

1 stop26h 20m

Perth

Wed 11/19

12:25 am-12:55 pm

1 stop26h 30m

$1,559

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 12/7

4:04 pm-12:00 pm

2 stops29h 56m

Perth

Wed 1/28

10:45 pm-2:30 pm

1 stop29h 45m

$1,576

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 11/13

7:00 am-10:50 pm

2 stops49h 50m

Perth

Sun 11/16

12:15 am-11:42 pm

2 stops37h 27m

$1,582

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 11/15

6:50 pm-1:25 am

2 stops40h 35m

Perth

Mon 11/24

10:45 pm-2:30 pm

1 stop29h 45m

$1,591

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 27 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, February is the cheapest month in which you can book a flight from Illinois to Perth (average of $1,436). Flying from Illinois to Perth in December is currently the most expensive (average of $2,094). 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 September 17, 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 10m. 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 $1,436). Flying from Illinois to Perth in December is currently the most expensive (average of $2,094). 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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Columbus to Perth flights
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St. Louis 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,191Average$1,522FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,229Average$1,331FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,468Average$2,048FlexibilityNo cancel feeOn-time72%

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