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Perth

$772+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap 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 December 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:35 pmORD - PER
1 stop26h 20mMultiple Airlines
Tue 3/247:35 amPER - ORD
3 stops41h 55mMultiple Airlines
Deal found 12/14$1,948
This Ovago deal was found by Cheapflights users on 12/14. 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.
Tue 12/232:35 pmORD - PER
1 stop26h 20mCathay Pacific
Mon 3/2312:25 amPER - ORD
1 stop26h 30mCathay Pacific
Deal found 12/14$1,990
This Cathay Pacific deal was found by Cheapflights users on 12/14. 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.
Sat 12/272:35 pmORD - PER
1 stop26h 20mMultiple Airlines
Sun 1/118:30 amPER - ORD
2 stops41h 55mMultiple Airlines
Deal found 12/14$2,182
This Ovago deal was found by Cheapflights users on 12/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:35 pmORD - PER
1 stop26h 20mCathay Pacific
Sun 1/118:30 amPER - ORD
1 stop42h 25mCathay Pacific
Deal found 12/15$2,351
This oojo deal was found by Cheapflights users on 12/14. 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 12/274:46 pmORD - PER
2 stops29h 19mQantas Airways
Sun 1/1110:45 pmPER - ORD
2 stops32h 04mQantas Airways
Deal found 12/14$2,574
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:14 pmORD - PER
2 stops30h 16mUnited Airlines
Sun 1/1111:45 pmPER - ORD
2 stops34h 20mUnited Airlines
Deal found 12/15$2,623
This KAYAK deal was found by Cheapflights users on 12/14. 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 12/233:13 pmORD - PER
2 stops31h 12mQantas Airways
Tue 3/245:00 amPER - ORD
2 stops38h 09mQantas Airways
Deal found 12/14$2,640
This SmartFares deal was found by Cheapflights users on 12/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:00 amSTL - PER
2 stops38h 55mMultiple Airlines
Sat 12/203:55 pmPER - STL
2 stops41h 36mMultiple Airlines
Deal found 12/14$2,718
This oojo deal was found by Cheapflights users on 12/15. 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.
Tue 12/1612:02 pmORD - PER
2 stops33h 53mQatar Airways
Mon 12/2210:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 12/15$2,850
This Ovago deal was found by Cheapflights users on 12/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:35 pmORD - PER
1 stop26h 20mCathay Pacific
Sun 12/2112:25 amPER - ORD
1 stop26h 30mCathay Pacific
Deal found 12/15$2,864
This oojo deal was found by Cheapflights users on 12/15. 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.
Tue 12/165:15 amSTL - PER
2 stops35h 40mCathay Pacific
Sun 12/2112:25 amPER - STL
2 stops33h 06mCathay Pacific
Deal found 12/15$7,159
This Qantas Airways deal was found by Cheapflights users on 12/15. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:30 pmSTL - PER
2 stops28h 35mMultiple Airlines
Mon 12/2210:45 pmPER - STL
3 stops32h 25mMultiple Airlines
Deal found 12/15$14,326

Find flight deals from Illinois to Perth

Keep the following information in mind while searching for Illinois to Perth flight deals. Data was last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,368
(Trip.com)

One-way from

$772
(oojo)

Popular in

September

Cheapest in

February

Average price

$2,246
Provider with most accurate pricing for Chicago (CHI)-Perth flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Perth flights.
Search Deals
From Illinois to Perth
Search Deals
One-way flight from Illinois to Perth
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($288 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($85 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 16, 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

Tue 4/14

4:00 pm-5:10 pm

2 stops36h 10m

Perth

Tue 4/28

6:25 pm-2:25 pm

2 stops57h 00m

$1,368

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 2/22

6:04 am-2:45 pm

3 stops42h 41m

Perth

Wed 3/4

5:05 pm-11:56 pm

2 stops44h 51m

$1,487

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 1/28

11:56 am-7:45 am

2 stops29h 49m

Perth

Tue 2/17

10:55 pm-2:04 pm

2 stops29h 09m

$1,543

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 5/4

3:15 pm-2:40 pm

3 stops34h 25m

Perth

Sat 5/30

1:10 am-11:59 pm

2 stops35h 49m

$1,564

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 5/4

5:30 pm-11:15 am

2 stops28h 45m

Perth

Tue 6/30

9:00 am-4:56 pm

2 stops44h 56m

$1,613

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 1/31

6:40 pm-5:20 pm

2 stops32h 40m

Perth

Sun 2/8

8:00 am-9:23 pm

2 stops27h 23m

$1,624

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 1/31

3:35 pm-5:25 am

2 stops47h 50m

Perth

Sun 2/8

1:50 pm-7:45 pm

3 stops43h 55m

$1,729

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 4/16

12:30 am-12:30 am

2 stops35h 00m

Perth

Sun 4/26

4:40 am-6:46 am

3 stops39h 06m

$1,768

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 5/12

6:30 am-11:15 am

2 stops39h 45m

Perth

Sat 5/16

10:30 am-11:16 pm

2 stops25h 46m

$2,115

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 5/12

2:20 pm-3:45 pm

3 stops36h 25m

Perth

Sat 5/16

1:15 pm-8:04 pm

3 stops43h 49m

$2,740

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 18 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, May is the cheapest month in which you can book a flight from Illinois to Perth (average of $1,231). Flying from Illinois to Perth in July is currently the most expensive (average of $1,615). 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 December 16, 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 36h 25m. Fly via Qantas Airways or Air Canada to get the fastest option. Airlines will cover a distance of 10878 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, May is the cheapest month in which you can book a flight from Illinois to Perth (average of $1,231). Flying from Illinois to Perth in July is currently the most expensive (average of $1,615). 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 December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,191Average$1,522FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,229Average$2,092FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,418Average$1,773FlexibilityNo cancel feeOn-time72%

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