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Cheap flights from Illinois to Perth from $1,160

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Perth departing on 23/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Find the cheapest flights from Illinois to Perth

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:42 - 05:10
ORD
-
PER
43h 28m
2 stops
Multiple Airlines Logo
01:15 - 08:00
PER
-
ORD
43h 45m
2 stops
$2,244Multiple Airlines
Fri, 16 Oct - Sat, 31 Oct
Multiple Airlines Logo
20:42 - 05:10
ORD
-
PER
43h 28m
2 stops
Multiple Airlines Logo
01:15 - 08:00
PER
-
ORD
43h 45m
2 stops
$2,251Multiple Airlines
Fri, 16 Oct - Sat, 31 Oct
United Airlines Logo
08:52 - 12:30
STL
-
PER
38h 38m
2 stops
United Airlines Logo
16:45 - 18:24
PER
-
STL
38h 39m
2 stops
$2,389United Airlines
Wed, 12 Aug - Sat, 22 Aug
United Airlines Logo
08:52 - 12:30
STL
-
PER
38h 38m
2 stops
United Airlines Logo
16:45 - 15:38
PER
-
STL
59h 53m
3 stops
$2,414United Airlines
Wed, 12 Aug - Sat, 22 Aug
Qatar Airways Logo
06:02 - 18:35
STL
-
PER
47h 33m
2 stops
Qatar Airways Logo
22:45 - 23:59
PER
-
STL
38h 14m
2 stops
$2,433Qatar Airways
Tue, 18 Aug - Sun, 20 Sep
Qatar Airways Logo
06:02 - 18:35
STL
-
PER
47h 33m
2 stops
Qatar Airways Logo
22:45 - 09:16
PER
-
STL
47h 31m
2 stops
$2,436Qatar Airways
Tue, 18 Aug - Mon, 21 Sep
Qantas Airways Logo
17:11 - 17:00
STL
-
PER
34h 49m
2 stops
Qantas Airways Logo
10:30 - 23:02
PER
-
STL
25h 32m
2 stops
$2,451Qantas Airways
Tue, 18 Aug - Sun, 20 Sep
American Airlines Logo
17:18 - 11:15
STL
-
PER
28h 57m
2 stops
American Airlines Logo
23:55 - 16:33
PER
-
STL
29h 38m
2 stops
$2,545American Airlines
Mon, 25 May - Mon, 1 Jun
Qantas Airways Logo
17:11 - 22:10
STL
-
PER
39h 59m
2 stops
Qantas Airways Logo
09:05 - 23:56
PER
-
STL
51h 51m
2 stops
$2,596Qantas Airways
Sat, 23 May - Sun, 14 Jun
American Airlines Logo
17:43 - 11:15
ORD
-
PER
28h 32m
2 stops
American Airlines Logo
23:45 - 16:03
PER
-
ORD
29h 18m
2 stops
$2,667American Airlines
Tue, 22 Sep - Thu, 8 Oct

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Qantas Airways flights from Illinois to Perth

Our best Qantas Airways deals on Illinois to Perth flight tickets
Qantas Airways
18 Aug
STL17:11Lambert-St Louis
34h 49m
2 stops
PER17:00Perth
20 Sept
PER10:30Perth
25h 32m
2 stops
STL23:02Lambert-St Louis
$2,451
Qantas Airways
23 May
STL17:11Lambert-St Louis
39h 59m
2 stops
PER22:10Perth
14 June
PER09:05Perth
51h 51m
2 stops
STL23:56Lambert-St Louis
$2,596
Qantas Airways
13 June
STL14:58Lambert-St Louis
31h 17m
2 stops
PER11:15Perth
20 June
PER12:25Perth
41h 08m
2 stops
STL16:33Lambert-St Louis
$2,729

ANA flights from Illinois to Perth

Our best ANA deals on Illinois to Perth flight tickets
ANA
22 Sept
ORD11:50Chicago O'Hare Intl
43h 10m
1 stop
PER20:00Perth
8 Oct
PER21:35Perth
30h 20m
1 stop
ORD14:55Chicago O'Hare Intl
$2,923
ANA
22 Sept
ORD17:45Chicago O'Hare Intl
37h 15m
1 stop
PER20:00Perth
8 Oct
PER21:35Perth
30h 20m
1 stop
ORD14:55Chicago O'Hare Intl
$2,936
ANA
22 Sept
ORD11:50Chicago O'Hare Intl
43h 10m
1 stop
PER20:00Perth
8 Oct
PER21:35Perth
30h 20m
1 stop
ORD14:55Chicago O'Hare Intl
$2,975

momondo 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, momondo users made 78,305 searches. Data last updated 30 April 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

Fri 16/10

20:42-05:10

2 stops43h 28m

Perth

Sat 31/10

01:15-08:00

2 stops43h 45m

$2,244

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Fri 16/10

20:42-05:10

2 stops43h 28m

Perth

Sat 31/10

01:15-08:00

2 stops43h 45m

$2,251

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Wed 12/8

08:52-12:30

2 stops38h 38m

Perth

Sat 22/8

16:45-18:24

2 stops38h 39m

$2,389

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Wed 12/8

08:52-12:30

2 stops38h 38m

Perth

Sat 22/8

16:45-15:38

3 stops59h 53m

$2,414

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 18/8

06:02-18:35

2 stops47h 33m

Perth

Sun 20/9

22:45-23:59

2 stops38h 14m

$2,433

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 18/8

06:02-18:35

2 stops47h 33m

Perth

Mon 21/9

22:45-09:16

2 stops47h 31m

$2,436

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 18/8

17:11-17:00

2 stops34h 49m

Perth

Sun 20/9

10:30-23:02

2 stops25h 32m

$2,451

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 25/5

17:18-11:15

2 stops28h 57m

Perth

Mon 1/6

23:55-16:33

2 stops29h 38m

$2,545

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 23/5

17:11-22:10

2 stops39h 59m

Perth

Sun 14/6

09:05-23:56

2 stops51h 51m

$2,596
Fastest return journey

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 22/9

17:43-11:15

2 stops28h 32m

Perth

Thu 8/10

23:45-16:03

2 stops29h 18m

$2,667

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Perth from

How to get the cheapest flight ticket from Illinois to Perth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Perth?

The month of December is, on average, the cheapest month to fly to Perth from Illinois, with most prices found around $1,594. If you’re not able to fly to Perth in December, then January is your next best option. Flight prices from Illinois to Perth during January average around $1,720.

Can stopping save me money on Illinois to Perth flights?

You could potentially save up to 14% on your flight if you consider stops on a Illinois to Perth flight.

Cheap Illinois to Perth flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Perth

Fastest flight time

27h 35m

Direct flights

None
The fastest flight from Illinois to Perth takes 27h 35m
There are no direct flights from Illinois to Perth. There are no popular flight routes from Illinois to Perth.
Search flight deals

Frequently asked questions about flying from Illinois to Perth

  • When did momondo last update prices for flights from Illinois to Perth Airport?

    Prices for flights from Illinois to Perth Airport were last updated today.

  • How old do you have to be to fly from Illinois to Perth Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Perth Airport.

  • What documentation or ID do you need to fly to Perth Airport?

    The necessary travel and health documents for your Perth Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Perth?

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

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Perth?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Perth. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to Perth with flexible booking policies on momondo?

All flight searches from Illinois to Perth on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Illinois to Perth?

momondo provides multiple filters to help you find the best flight to Perth from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Illinois to Perth right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Perth flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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