$581+ 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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
Mar 11 — Mar 181
1 adult, Economy
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Find cheap flights from Illinois to Perth with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Perth
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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 February 9, 2026.
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 February 9, 2026.
This Expedia deal was found by Cheapflights users on 2/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
ORD
- PER
2 stops34h 05m
Multiple Airlines
Sat 10/1711:05 pm
PER
- ORD
2 stops28h 43m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$1,435
This Air Canada deal was found by Cheapflights users on 2/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:40 pm
ORD
- PER
2 stops40h 50m
Air Canada
Mon 5/1110:40 pm
PER
- ORD
2 stops34h 18m
Air Canada
Deal found 2/7![Air Canada logo]()
$1,437
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/93:35 pm
ORD
- PER
2 stops39h 45m
Air Canada
Mon 3/163:15 pm
PER
- ORD
2 stops36h 26m
Air Canada
Deal found 2/8![Air Canada logo]()
$1,442
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/83:35 pm
ORD
- PER
2 stops34h 55m
Air Canada
Sat 3/144:45 pm
PER
- ORD
2 stops34h 56m
Air Canada
Deal found 2/8![Air Canada logo]()
$1,443
This Travelocity deal was found by Cheapflights users on 2/7. 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.
Sat 10/102:15 pm
ORD
- PER
3 stops35h 30m
Multiple Airlines
Sun 11/110:30 pm
PER
- ORD
2 stops30h 11m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$1,484
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:40 pm
ORD
- PER
2 stops39h 50m
Air Canada
Fri 10/2310:55 pm
PER
- ORD
2 stops28h 53m
Air Canada
Deal found 2/8![Air Canada logo]()
$1,548
This American Airlines deal was found by Cheapflights users on 2/7. 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.
Wed 6/101:26 pm
STL
- PER
2 stops32h 49m
American Airlines
Thu 6/1811:55 pm
PER
- STL
2 stops34h 39m
American Airlines
Deal found 2/7![American Airlines logo]()
$1,716
This Qantas Airways deal was found by Cheapflights users on 2/7. 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 3/56:50 pm
STL
- PER
2 stops33h 25m
Qantas Airways
Mon 3/95:45 pm
PER
- STL
2 stops34h 43m
Qantas Airways
Deal found 2/7![Qantas Airways logo]()
$1,838
This KAYAK deal was found by Cheapflights users on 2/7. 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.
Wed 6/102:11 pm
STL
- PER
3 stops32h 04m
Qantas Airways
Thu 6/1811:55 pm
PER
- STL
2 stops37h 04m
Qantas Airways
Deal found 2/7![Qantas Airways logo]()
$1,945
This Air New Zealand deal was found by Cheapflights users on 2/7. 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 Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1010:23 am
STL
- PER
3 stops40h 37m
Multiple Airlines
Thu 6/1811:50 pm
PER
- STL
3 stops45h 47m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$2,094
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:05 pm
STL
- PER
3 stops56h 25m
Air Canada
Mon 3/910:55 pm
PER
- STL
3 stops53h 34m
Air Canada
Deal found 2/8![Air Canada logo]()
$4,088
This BusinessClass deal was found by Cheapflights users on 2/7. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/244:13 pm
STL
- PER
2 stops31h 12m
Qantas Airways
Tue 3/3111:45 pm
PER
- STL
2 stops37h 13m
Qantas Airways
Deal found 2/7![Qantas Airways logo]()
$6,679
Best flights from Illinois to PerthDiscover carefully curated flight deals from Illinois to Perth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 9, 2026.
Discover carefully curated flight deals from Illinois to Perth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 9, 2026.
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/93:35 pm
ORD
- PER
2 stops39h 45m
Air Canada
Mon 3/163:15 pm
PER
- ORD
2 stops36h 26m
Air Canada
Deal found 2/8![Air Canada logo]()
$1,442
This Gurufare deal was found by Cheapflights users on 2/6. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/183:40 pm
ORD
- PER
2 stops43h 15m
Multiple Airlines
Sat 4/2511:30 pm
PER
- ORD
2 stops33h 28m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$1,556
This oojo deal was found by Cheapflights users on 2/6. 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 3/2412:20 pm
ORD
- PER
2 stops45h 35m
Cathay Pacific
Mon 3/3012:10 am
PER
- ORD
1 stop26h 45m
Cathay Pacific
Deal found 2/6![Cathay Pacific logo]()
$1,600
This American Airlines deal was found by Cheapflights users on 2/5. 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.
Mon 3/234:49 pm
ORD
- PER
2 stops30h 36m
American Airlines
Mon 3/3011:45 pm
PER
- ORD
2 stops31h 55m
American Airlines
Deal found 2/5![American Airlines logo]()
$1,668
This Qantas Airways deal was found by Cheapflights users on 2/6. 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 3/56:38 am
STL
- PER
2 stops48h 37m
Qantas Airways
Mon 3/95:00 pm
PER
- STL
2 stops37h 13m
Qantas Airways
Deal found 2/6![Qantas Airways logo]()
$1,838
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/83:35 pm
ORD
- PER
2 stops34h 55m
Air Canada
Sat 3/144:45 pm
PER
- ORD
2 stops34h 56m
Air Canada
Deal found 2/8![Air Canada logo]()
$1,443
This Air Canada deal was found by Cheapflights users on 2/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:40 pm
ORD
- PER
2 stops40h 50m
Air Canada
Mon 5/1111:55 pm
PER
- ORD
3 stops35h 06m
Air Canada
Deal found 2/7![Air Canada logo]()
$1,450
This Orbitz deal was found by Cheapflights users on 2/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/81:55 pm
ORD
- PER
3 stops36h 35m
Multiple Airlines
Sat 3/143:15 pm
PER
- ORD
3 stops43h 49m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$1,602
This Jetabroad deal was found by Cheapflights users on 2/7. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:15 pm
ORD
- PER
1 stop25h 35m
Multiple Airlines
Sun 5/1012:10 am
PER
- ORD
2 stops32h 42m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$1,672
This BYOjet deal was found by Cheapflights users on 2/8. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:35 pm
ORD
- PER
1 stop26h 20m
Multiple Airlines
Tue 3/3112:10 am
PER
- ORD
2 stops31h 16m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$1,680
This Philippine Airlines deal was found by Cheapflights users on 2/7. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/249:30 pm
ORD
- PER
2 stops44h 50m
Multiple Airlines
Tue 3/318:35 am
PER
- ORD
2 stops33h 50m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$1,692
This Air Canada deal was found by Cheapflights users on 2/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:05 pm
STL
- PER
3 stops56h 25m
Air Canada
Mon 3/910:55 pm
PER
- STL
3 stops53h 34m
Air Canada
Deal found 2/7![Air Canada logo]()
$4,088
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Tue 3/244:30 pm
STL
- PER
3 stops31h 00m
United Airlines
Tue 3/3111:45 pm
PER
- STL
3 stops30h 11m
United Airlines
Deal found 2/7![United Airlines logo]()
$11,518
This BusinessClass deal was found by Cheapflights users on 2/7. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/244:13 pm
STL
- PER
2 stops31h 12m
Qantas Airways
Tue 3/3111:45 pm
PER
- STL
2 stops37h 13m
Qantas Airways
Deal found 2/7![Qantas Airways logo]()
$6,679
Last-minute flights from Illinois to PerthDiscover last-minute flight deals from Illinois to Perth. Data last updated February 9, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Perth. Data last updated February 9, 2026 and is based on user searches.
This Qantas Airways deal was found by Cheapflights users on 2/8. 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 3/56:50 pm
STL
- PER
2 stops36h 25m
Qantas Airways
Mon 3/910:40 pm
PER
- STL
2 stops31h 33m
Qantas Airways
Deal found 2/8![Qantas Airways logo]()
$1,838
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:05 pm
STL
- PER
3 stops56h 25m
Air Canada
Mon 3/910:55 pm
PER
- STL
3 stops53h 34m
Air Canada
Deal found 2/8![Air Canada logo]()
$4,088
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/83:35 pm
ORD
- PER
2 stops34h 55m
Air Canada
Sat 3/144:45 pm
PER
- ORD
2 stops34h 56m
Air Canada
Deal found 2/8![Air Canada logo]()
$1,443
This Orbitz deal was found by Cheapflights users on 2/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/81:55 pm
ORD
- PER
3 stops36h 35m
Multiple Airlines
Sat 3/143:15 pm
PER
- ORD
3 stops43h 49m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$1,602
This Air Canada deal was found by Cheapflights users on 2/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/93:35 pm
ORD
- PER
2 stops39h 45m
Air Canada
Mon 3/163:15 pm
PER
- ORD
2 stops36h 26m
Air Canada
Deal found 2/8![Air Canada logo]()
$1,442
This Philippine Airlines deal was found by Cheapflights users on 2/6. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:00 am
ORD
- PER
2 stops35h 20m
Multiple Airlines
Wed 4/18:35 am
PER
- ORD
2 stops34h 22m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$1,738
This American Airlines deal was found by Cheapflights users on 2/5. 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.
Mon 3/234:49 pm
ORD
- PER
2 stops30h 36m
American Airlines
Mon 3/3011:45 pm
PER
- ORD
2 stops31h 55m
American Airlines
Deal found 2/5![American Airlines logo]()
$1,668
This oojo deal was found by Cheapflights users on 2/6. 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 3/2412:20 pm
ORD
- PER
2 stops45h 35m
Cathay Pacific
Mon 3/3012:10 am
PER
- ORD
1 stop26h 45m
Cathay Pacific
Deal found 2/6![Cathay Pacific logo]()
$1,600
This Philippine Airlines deal was found by Cheapflights users on 2/7. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/249:30 pm
ORD
- PER
2 stops44h 50m
Multiple Airlines
Tue 3/318:35 am
PER
- ORD
2 stops33h 50m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$1,692
This Priceline deal was found by Cheapflights users on 2/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/244:44 pm
ORD
- PER
2 stops30h 21m
Qantas Airways
Tue 3/3111:45 pm
PER
- ORD
2 stops28h 08m
Qantas Airways
Deal found 2/6![Qantas Airways logo]()
$1,710
This BusinessClass deal was found by Cheapflights users on 2/7. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/244:13 pm
STL
- PER
2 stops31h 12m
Qantas Airways
Tue 3/3111:45 pm
PER
- STL
2 stops37h 13m
Qantas Airways
Deal found 2/7![Qantas Airways logo]()
$6,679
This BYOjet deal was found by Cheapflights users on 2/8. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/253:35 pm
ORD
- PER
1 stop26h 20m
Multiple Airlines
Tue 3/3112:10 am
PER
- ORD
2 stops31h 16m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$1,680
One-way flights from Illinois to PerthSearch for one-way flight options from Illinois to Perth. Find affordable one-way fares based on user searches. Data last updated February 9, 2026.
Search for one-way flight options from Illinois to Perth. Find affordable one-way fares based on user searches. Data last updated February 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Fri 7/311:10 pm
ORD
- PER
3 stops54h 45m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$581
This Kiwi.com deal was found by Cheapflights users on 2/5. 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.
Wed 4/84:15 pm
ORD
- PER
2 stops47h 40m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$619
This oojo deal was found by Cheapflights users on 2/6. 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 3/3111:26 am
ORD
- PER
2 stops54h 49m
Philippine Airlines
Deal found 2/6![Philippine Airlines logo]()
$713
This Philippine Airlines deal was found by Cheapflights users on 2/8. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/318:20 pm
ORD
- PER
2 stops45h 55m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$758
This oojo deal was found by Cheapflights users on 2/7. 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 3/317:20 pm
ORD
- PER
1 stop34h 15m
Qatar Airways
Deal found 2/7![Qatar Airways logo]()
$956
This Ovago deal was found by Cheapflights users on 2/7. 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 3/282:10 pm
ORD
- PER
2 stops50h 40m
Etihad Airways
Deal found 2/7![Etihad Airways logo]()
$971
This SmartFares deal was found by Cheapflights users on 2/5. 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.
Wed 4/87:20 pm
ORD
- PER
1 stop27h 35m
Qatar Airways
Deal found 2/5![Qatar Airways logo]()
$977
This oojo deal was found by Cheapflights users on 2/7. 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 3/288:05 pm
ORD
- PER
1 stop26h 50m
Qatar Airways
Deal found 2/7![Qatar Airways logo]()
$996
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 February 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,437 (Air Canada) |
One-way from | $581 (Kiwi.com) |
Popular in | September |
Cheapest in | October |
Average price | $1,613 |
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 February 9, 2026.
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 3/9
3:35 pm-8:20 pm
2 stops39h 45m
Perth
Mon 3/16
3:15 pm-2:41 pm
2 stops36h 26m
$1,442
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Sun 3/8
3:35 pm-3:30 pm
2 stops34h 55m
Perth
Sat 3/14
4:45 pm-2:41 pm
2 stops34h 56m
$1,443
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Mon 4/20
3:40 pm-9:30 pm
2 stops40h 50m
Perth
Mon 5/11
11:55 pm-10:01 pm
3 stops35h 06m
$1,450
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Sat 4/18
3:40 pm-11:55 pm
2 stops43h 15m
Perth
Sat 4/25
11:30 pm-7:58 pm
2 stops33h 28m
$1,556
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Tue 3/24
12:20 pm-10:55 pm
2 stops45h 35m
Perth
Mon 3/30
12:10 am-1:55 pm
1 stop26h 45m
$1,600
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Sun 3/8
1:55 pm-3:30 pm
3 stops36h 35m
Perth
Sat 3/14
3:15 pm-10:04 pm
3 stops43h 49m
$1,602
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Mon 3/23
4:49 pm-12:25 pm
2 stops30h 36m
Perth
Mon 3/30
11:45 pm-6:40 pm
2 stops31h 55m
$1,668
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Mon 4/20
4:15 pm-6:50 am
1 stop25h 35m
Perth
Sun 5/10
12:10 am-7:52 pm
2 stops32h 42m
$1,672
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Wed 3/25
3:35 pm-6:55 am
1 stop26h 20m
Perth
Tue 3/31
12:10 am-6:26 pm
2 stops31h 16m
$1,680
ChicagoPerth
ORD - PER
ORDPER
Chicago O'Hare Intl
Tue 3/24
9:30 pm-7:20 am
2 stops44h 50m
Perth
Tue 3/31
8:35 am-5:25 am
2 stops33h 50m
$1,692
Showing 1-10 of 21 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.
ORD-PER
STL-PER
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
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ORD-PER
STL-PER
What is the cheapest month to book a flight from Illinois to Perth?
Currently, August is the cheapest month in which you can book a flight from Illinois to Perth (average of $1,265). Flying from Illinois to Perth in April is currently the most expensive (average of $1,661). 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
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.
Traveling to a place near Perth?
Book flights to Perth if you plan to visit one of these locationsRottnest Island
Scarborough
Browse thousands of different options on Cheapflights for your next trip
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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.
Complete your trip
Complete your trip to Perth by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Perth by cabin class
Find flights from Illinois to Perth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Perth flights
Browse other Illinois and Perth flight options. Last updated on February 9, 2026.
Other flights to Perth
Explore flights to Perth departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 February 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,191 | Average$1,821 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,229 | Average$2,092 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$1,470 | Average$1,786 | FlexibilityNo cancel fee | On-time72% |