What is the cheapest airline that flies from Illinois to Perth?

Cathay Pacific and Qatar Airways are the most popular carriers operating from Illinois to Perth

What airlines fly to Perth?

Cathay Pacific, Qantas Airways and Qatar Airways are the top three most popular airlines that fly to Perth from Illinois according to our data. Cathay Pacific is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Perth. Keep in mind that there are 3 different airlines that fly to Perth on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Illinois to Perth Airport refresh daily.

How many operators does momondo search for flights from Illinois to Perth Airport?

As of December 2025, there are 3 operators available to choose from for flights from Illinois to Perth Airport.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Perth Airport.

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

The required travel and health documents for your Perth Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Perth Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$526 Cheap Flights from Illinois to Perth in 2025/26

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Find the cheapest flights from Illinois to Perth

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 1:15 am

ORD

PER

44h 40m2 stops

3:35 pm - 12:55 pm

PER

ORD

59h 20m2 stops

$1,219Multiple Airlines

Tue, Feb 3 - Wed, Feb 18

2:10 pm - 7:45 pm

ORD

PER

40h 35m2 stops

8:25 pm - 8:35 am

PER

ORD

49h 10m2 stops

$1,241Multiple Airlines

Wed, Mar 11 - Sat, Mar 21

2:35 pm - 1:35 am

ORD

PER

45h 00m2 stops

8:25 pm - 12:55 pm

PER

ORD

54h 30m2 stops

$1,318Multiple Airlines

Fri, Jan 23 - Fri, Jan 30

11:14 am - 7:45 am

STL

PER

31h 31m2 stops

12:10 am - 9:48 pm

PER

STL

34h 38m2 stops

$1,378Cathay Pacific

Mon, Apr 20 - Wed, Apr 29

5:29 pm - 5:25 am

ORD

PER

46h 56m2 stops

5:05 pm - 11:59 pm

PER

ORD

43h 54m2 stops

$1,391Multiple Airlines

Sat, Mar 14 - Sat, Mar 21

11:14 am - 7:45 am

STL

PER

31h 31m2 stops

9:15 am - 9:48 pm

PER

STL

49h 33m2 stops

$1,392Cathay Pacific

Mon, Apr 20 - Wed, Apr 29

11:14 am - 7:45 am

STL

PER

31h 31m2 stops

12:10 am - 10:29 pm

PER

STL

35h 19m2 stops

$1,419Cathay Pacific

Mon, Apr 20 - Mon, Apr 27

11:14 am - 10:40 pm

STL

PER

46h 26m2 stops

9:15 am - 10:29 pm

PER

STL

50h 14m2 stops

$1,426Cathay Pacific

Mon, Apr 20 - Sun, May 3

5:30 pm - 11:15 am

ORD

PER

28h 45m2 stops

10:30 am - 11:59 pm

PER

ORD

26h 29m2 stops

$1,502Qantas Airways

Tue, Apr 28 - Thu, May 14

11:56 am - 7:45 am

ORD

PER

29h 49m2 stops

11:45 pm - 3:56 pm

PER

ORD

29h 11m2 stops

$1,525Qantas Airways

Wed, Feb 11 - Mon, Apr 13

Air New Zealand flights from Illinois to Perth

Our best Air New Zealand deals on Illinois to Perth flight tickets

Air New Zealand

Jan 20

ORD5:16 pmChicago O'Hare Intl

39h 04m

2 stops

PER10:20 pmPerth

Mar 7

PER11:50 pmPerth

38h 09m

2 stops

ORD11:59 pmChicago O'Hare Intl

$1,818

Find similar

Air New Zealand

Jan 20

ORD5:16 pmChicago O'Hare Intl

39h 04m

2 stops

PER10:20 pmPerth

Mar 2

PER6:50 pmPerth

42h 09m

2 stops

ORD10:59 pmChicago O'Hare Intl

$1,846

Find similar

Air New Zealand

Jan 20

ORD5:16 pmChicago O'Hare Intl

39h 04m

2 stops

PER10:20 pmPerth

Mar 6

PER6:50 pmPerth

48h 22m

2 stops

ORD5:12 amChicago O'Hare Intl

$1,853

Find similar

Qantas Airways flights from Illinois to Perth

Our best Qantas Airways deals on Illinois to Perth flight tickets

Qantas Airways

Apr 28

ORD5:30 pmChicago O'Hare Intl

28h 45m

2 stops

PER11:15 amPerth

May 14

PER10:30 amPerth

26h 29m

2 stops

ORD11:59 pmChicago O'Hare Intl

$1,502

Find similar

Qantas Airways

Feb 11

ORD11:56 amChicago O'Hare Intl

29h 49m

2 stops

PER7:45 amPerth

Apr 13

PER11:45 pmPerth

29h 11m

2 stops

ORD3:56 pmChicago O'Hare Intl

$1,525

Find similar

Qantas Airways

Feb 10

STL5:04 pmLambert-St Louis

48h 41m

2 stops

PER7:45 amPerth

Feb 17

PER10:45 pmPerth

34h 40m

2 stops

STL7:25 pmLambert-St Louis

$1,558

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 2/3

2:35 pm-1:15 am

2 stops44h 40m

Perth

Wed 2/18

3:35 pm-12:55 pm

2 stops59h 20m

$1,219

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 3/11

2:10 pm-7:45 pm

2 stops40h 35m

Perth

Sat 3/21

8:25 pm-8:35 am

2 stops49h 10m

$1,241

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Fri 1/23

2:35 pm-1:35 am

2 stops45h 00m

Perth

Fri 1/30

8:25 pm-12:55 pm

2 stops54h 30m

$1,318

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 4/20

11:14 am-7:45 am

2 stops31h 31m

Perth

Wed 4/29

12:10 am-9:48 pm

2 stops34h 38m

$1,378

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 3/14

5:29 pm-5:25 am

2 stops46h 56m

Perth

Sat 3/21

5:05 pm-11:59 pm

2 stops43h 54m

$1,391

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 4/20

11:14 am-7:45 am

2 stops31h 31m

Perth

Wed 4/29

9:15 am-9:48 pm

2 stops49h 33m

$1,392

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 4/20

11:14 am-7:45 am

2 stops31h 31m

Perth

Mon 4/27

12:10 am-10:29 pm

2 stops35h 19m

$1,419

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 4/20

11:14 am-10:40 pm

2 stops46h 26m

Perth

Sun 5/3

9:15 am-10:29 pm

2 stops50h 14m

$1,426

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 4/28

5:30 pm-11:15 am

2 stops28h 45m

Perth

Thu 5/14

10:30 am-11:59 pm

2 stops26h 29m

$1,502

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 2/11

11:56 am-7:45 am

2 stops29h 49m

Perth

Mon 4/13

11:45 pm-3:56 pm

2 stops29h 11m

$1,525

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Can stopping save me money on Illinois to Perth flights?

You could potentially save up to 37% 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	28h 23m
Direct flights	None

The fastest flight from Illinois to Perth takes 28h 23m

There are no direct flights from Illinois to Perth. There are no popular flight routes from Illinois to Perth.

Search flight deals

When did momondo last update prices for flights from Illinois to Perth Airport?
Prices for flights from Illinois to Perth Airport refresh daily.
How many operators does momondo search for flights from Illinois to Perth Airport?
As of December 2025, there are 3 operators available to choose from for flights from Illinois to Perth Airport.
How old do you have to be to fly from Illinois to Perth Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Perth Airport.
What documentation or ID do you need to fly to Perth Airport?
The required travel and health documents for your Perth Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Perth Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Perth

Compare and see reviews for airlines that fly from Illinois to Perth with momondo

Airline	Rating	Free Cancellation	Price
Qantas Airways	PriceFrom $1,191	Free Cancellation	Rating 7.5 957 reviews	Search Qantas Airways flights
Qatar Airways	PriceFrom $1,229	Free Cancellation	Rating 7.4 3,695 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,418	Free Cancellation	Rating 7.6 1,106 reviews	Search Cathay Pacific flights

Mandurah

Fremantle

Rottnest Island

Scarborough

Waikiki

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Perth from Illinois.

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?

Once all potential Illinois to Perth flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Illinois to Perth now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Perth and let you know when they change.