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Cheap flights from Illinois to Perth from $857

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
23 Aug — 30 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Perth

Enter your travel dates to find the best prices.

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 24 July 2026.

Tue 25/817:16
ORD
-
PER
2 stops30h 09m
Qantas Airways
Tue 1/910:30
PER
-
ORD
2 stops31h 43m
Qantas Airways
Deal found 21/7$1,860
Wed 4/1115:25
ORD
-
PER
2 stops31h 05m
Qantas Airways
Mon 9/1122:45
PER
-
ORD
2 stops31h 15m
Qantas Airways
Deal found 22/7$1,920
Wed 14/1015:20
ORD
-
PER
2 stops31h 45m
Qantas Airways
Fri 23/1010:30
PER
-
ORD
2 stops32h 29m
Qantas Airways
Deal found 23/7$1,937
Thu 22/1013:50
ORD
-
PER
2 stops32h 25m
Qantas Airways
Tue 27/1005:00
PER
-
ORD
2 stops26h 38m
Qantas Airways
Deal found 21/7$1,980
Sun 6/917:50
ORD
-
PER
2 stops34h 10m
Qantas Airways
Sun 13/916:25
PER
-
ORD
2 stops37h 24m
Qantas Airways
Deal found 23/7$2,013
Sun 6/919:20
ORD
-
PER
1 stop34h 15m
Qatar Airways
Sun 13/914:20
PER
-
ORD
2 stops37h 45m
Qatar Airways
Deal found 23/7$2,103
Wed 5/815:22
ORD
-
PER
2 stops30h 53m
American Airlines
Wed 12/810:00
PER
-
ORD
2 stops26h 30m
American Airlines
Deal found 22/7$2,116
Fri 13/1111:45
ORD
-
PER
2 stops34h 45m
Qantas Airways
Thu 26/1122:55
PER
-
ORD
2 stops32h 05m
Qantas Airways
Deal found 22/7$2,225
Sun 6/1217:53
ORD
-
PER
2 stops30h 37m
Qantas Airways
Wed 16/1222:45
PER
-
ORD
2 stops31h 31m
Qantas Airways
Deal found 20/7$2,345
Tue 18/815:40
ORD
-
PER
2 stops41h 00m
Air Canada
Mon 24/815:30
PER
-
ORD
2 stops36h 06m
Air Canada
Deal found 20/7$2,408
Fri 11/1215:59
STL
-
PER
2 stops50h 16m
Qantas Airways
Mon 4/106:00
PER
-
STL
2 stops47h 00m
Qantas Airways
Deal found 23/7$3,139
Mon 27/706:02
STL
-
PER
2 stops47h 33m
Qatar Airways
Wed 29/722:45
PER
-
STL
2 stops54h 43m
Qatar Airways
Deal found 24/7$3,438

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 24 July 2026.

Round-trip from

$1,860

One-way from

$857
Qantas Airways
  • Qantas Airways
  • 25/8-1/9
  • 4 total stops
  • 61h 52m total
  • Illinois to Perth
Search Deals
24/9
  • 24/9
  • 3 total stops
  • 42h 10m total
  • Illinois to Perth
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 24 July 2026.
Use the filters below to find and compare flights from Illinois to Perth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 6/9

19:20-18:35

1 stop34h 15m

Perth

Sun 13/9

14:20-15:05

2 stops37h 45m

$2,103

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Fri 13/11

11:45-12:30

2 stops34h 45m

Perth

Thu 26/11

22:55-17:00

2 stops32h 05m

$2,225

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 18/8

15:40-21:40

2 stops41h 00m

Perth

Mon 24/8

15:30-14:36

2 stops36h 06m

$2,408
Fastest return journey

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 6/12

15:20-10:10

2 stops28h 50m

Perth

Wed 16/12

23:10-15:00

2 stops29h 50m

$2,474

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Fri 13/11

22:45-07:20

1 stop42h 35m

Perth

Thu 26/11

17:50-14:37

2 stops34h 47m

$2,504

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 7/11

17:56-14:30

2 stops30h 34m

Perth

Thu 17/12

23:10-15:00

2 stops29h 50m

$2,527

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 14/10

19:20-18:35

1 stop34h 15m

Perth

Fri 23/10

22:45-15:05

1 stop29h 20m

$2,786

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 7/11

18:50-18:45

1 stop33h 55m

Perth

Thu 17/12

22:45-14:30

1 stop29h 45m

$2,834

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 27/9

15:40-16:10

2 stops35h 30m

Perth

Wed 30/9

22:40-14:43

2 stops29h 03m

$2,850

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 24/12

15:20-17:15

2 stops35h 55m

Perth

Tue 29/12

11:20-05:59

2 stops32h 39m

$2,854

Flights are sorted by cheapest return flights first.

Deals found on 21/7

Showing 1-10 of 24 resultsSorted by cheapest first
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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 return 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

No data available for this route at this time. Please check back soon.

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?

    Perth (PER) is the airport you will fly into if you book a flight from Illinois to Perth. It is only a 10.2 km journey from Perth (PER) to Perth’s city centre.

  • How long is the flight from Illinois to Perth?

    There are many flights that can get you from Illinois to Perth in 34h 15m. Fly via Qatar Airways, Qantas Airways, or Air Canada to get the fastest option. Illinois and Perth are separated by a distance of 17617 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with 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 holiday 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.

See more FAQs

Travelling to a place near Perth?

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

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Why should you use Cheapflights to find cheap flight tickets from Illinois to Perth?

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Can Cheapflights find flights from Illinois to Perth with no change fees?

Need flexible booking options for your flight to Perth from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Illinois to Perth become cheaper?

Yes! Start tracking prices for Illinois to Perth flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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