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

Philippine Airlines, Qatar Airways, and Cathay Pacific 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 49% 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 August 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.

$512 Cheap Flights from Illinois to Perth in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Illinois to Perth

Round-trip

One-way

Cheap round-trip flights

4:25 pm - 4:35 pmORD-PER

34h 10m2 stops

5:50 pm - 1:50 pmPER-ORD

34h 00m2 stops

$951

Find Deal

Wed, Nov 5 - Wed, Nov 12

2:40 pm - 4:20 amORD-PER

47h 40m2 stops

5:35 am - 1:00 pmPER-ORD

45h 25m2 stops

$990

Find Deal

Sun, Nov 2 - Mon, Nov 10

3:40 pm - 9:35 pmORD-PER

39h 55m2 stops

10:55 pm - 7:30 pmPER-ORD

34h 35m3 stops

$1,290Air Canada

Find Deal

Sun, Nov 2 - Mon, Nov 10

3:40 pm - 3:55 pmORD-PER

34h 15m2 stops

3:15 pm - 7:30 pmPER-ORD

42h 15m3 stops

$1,353Air Canada

Find Deal

Wed, Nov 5 - Wed, Nov 12

4:00 pm - 7:45 amORD-PER

26h 45m1 stop

12:10 am - 2:25 pmPER-ORD

27h 15m1 stop

$1,357Cathay Pacific

Find Deal

Wed, Sep 24 - Tue, Sep 30

6:00 am - 7:20 amORD-PER

35h 20m2 stops

8:40 am - 6:43 amPER-ORD

36h 03m2 stops

$1,391Philippine Airlines

Find Deal

Sat, Nov 8 - Thu, Nov 20

2:40 pm - 10:50 pmORD-PER

42h 10m1 stop

12:15 am - 1:00 pmPER-ORD

26h 45m1 stop

$1,398Cathay Pacific

Find Deal

Sat, Nov 8 - Wed, Nov 19

10:10 pm - 7:20 amORD-PER

67h 10m2 stops

8:40 am - 6:43 amPER-ORD

36h 03m2 stops

$1,401Philippine Airlines

Find Deal

Thu, Nov 6 - Thu, Nov 13

6:50 pm - 12:00 pmORD-PER

27h 10m1 stop

10:45 pm - 2:30 pmPER-ORD

29h 45m1 stop

$1,417Qatar Airways

Find Deal

Thu, Nov 6 - Thu, Nov 13

7:20 pm - 6:40 pmORD-PER

34h 20m1 stop

10:45 pm - 2:50 pmPER-ORD

29h 05m1 stop

$1,419Qatar Airways

Find Deal

Wed, Oct 8 - Mon, Oct 13

Air Canada flights from Illinois to Perth

Our best Air Canada deals on Illinois to Perth flight tickets

Air Canada

Nov 2

ORD3:40 pmChicago O'Hare Intl

39h 55m

2 stops

PER9:35 pmPerth

Nov 10

PER10:55 pmPerth

34h 35m

3 stops

ORD7:30 pmChicago O'Hare Intl

$1,290

Find similar

Air Canada

Nov 5

ORD3:40 pmChicago O'Hare Intl

34h 15m

2 stops

PER3:55 pmPerth

Nov 12

PER3:15 pmPerth

42h 15m

3 stops

ORD7:30 pmChicago O'Hare Intl

$1,353

Find similar

Air Canada

Nov 6

ORD3:40 pmChicago O'Hare Intl

34h 15m

2 stops

PER3:55 pmPerth

Nov 13

PER10:55 pmPerth

34h 35m

3 stops

ORD7:30 pmChicago O'Hare Intl

$1,415

Find similar

Cathay Pacific flights from Illinois to Perth

Our best Cathay Pacific deals on Illinois to Perth flight tickets

Cathay Pacific

Sep 24

ORD4:00 pmChicago O'Hare Intl

26h 45m

1 stop

PER7:45 amPerth

Sep 30

PER12:10 amPerth

27h 15m

1 stop

ORD2:25 pmChicago O'Hare Intl

$1,357

Find similar

Cathay Pacific

Nov 8

ORD2:40 pmChicago O'Hare Intl

42h 10m

1 stop

PER10:50 pmPerth

Nov 19

PER12:15 amPerth

26h 45m

1 stop

ORD1:00 pmChicago O'Hare Intl

$1,398

Find similar

Cathay Pacific

Nov 2

ORD2:40 pmChicago O'Hare Intl

26h 15m

1 stop

PER6:55 amPerth

Nov 10

PER8:30 amPerth

42h 30m

1 stop

ORD1:00 pmChicago O'Hare Intl

$1,400

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 11/5

4:25 pm-4:35 pm

2 stops34h 10m

Perth

Wed 11/12

5:50 pm-1:50 pm

2 stops34h 00m

$951

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 11/2

2:40 pm-4:20 am

2 stops47h 40m

Perth

Mon 11/10

5:35 am-1:00 pm

2 stops45h 25m

$990

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 11/2

3:40 pm-9:35 pm

2 stops39h 55m

Perth

Mon 11/10

10:55 pm-7:30 pm

3 stops34h 35m

$1,290

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 11/5

3:40 pm-3:55 pm

2 stops34h 15m

Perth

Wed 11/12

3:15 pm-7:30 pm

3 stops42h 15m

$1,353

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 9/24

4:00 pm-7:45 am

1 stop26h 45m

Perth

Tue 9/30

12:10 am-2:25 pm

1 stop27h 15m

$1,357

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 11/8

6:00 am-7:20 am

2 stops35h 20m

Perth

Thu 11/20

8:40 am-6:43 am

2 stops36h 03m

$1,391

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 11/8

2:40 pm-10:50 pm

1 stop42h 10m

Perth

Wed 11/19

12:15 am-1:00 pm

1 stop26h 45m

$1,398

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 11/6

10:10 pm-7:20 am

2 stops67h 10m

Perth

Thu 11/13

8:40 am-6:43 am

2 stops36h 03m

$1,401

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 11/6

6:50 pm-12:00 pm

1 stop27h 10m

Perth

Thu 11/13

10:45 pm-2:30 pm

1 stop29h 45m

$1,417

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 10/8

7:20 pm-6:40 pm

1 stop34h 20m

Perth

Mon 10/13

10:45 pm-2:50 pm

1 stop29h 05m

$1,419

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

What is the cheapest month to fly to Perth?

In general, February is the cheapest month to fly from Illinois to Perth. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,184. If you are unable to visit Perth during the month of February, then departing from Illinois during the month March is also very affordable. Most momondo users find prices during this month for around $1,258.

What is the cheapest day to depart on your flight to Perth?

The cheapest day to depart on your flight to Perth is on a Monday when prices can be found for as low as $1,512. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Perth is Friday, with ticket prices averaging around $2,664.

What is the cheapest time of day to depart on your flight to Perth?

In the evening is the cheapest time of day to fly from Illinois to Perth when you can find flight prices for as low as $1,629. Flying to Perth in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $1,712. Of course, these prices can vary depending on the time of year and what airport you fly to.

Can stopping save me money on Illinois to Perth flights?

You could potentially save up to 7% 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

Best Price Found	$512
Fastest flight time	26h 15m
Direct flights	None
Airports in Perth	1 airport

The best one-way flight to Perth from Illinois in the past 72 hours is $512. The best round-trip flight deal from Illinois to Perth found on momondo in the last 72 hours is $951.

The fastest flight from Illinois to Perth takes 26h 15m

There are no direct flights from Illinois to Perth. Popular non-direct routes for this connection are Lambert-St Louis Airport - Perth Airport and Chicago O'Hare Intl Airport - Perth Airport.

There is 1 airport near Perth: Perth (PER)

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 August 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 7.5 893 reviews	Search Qantas Airways flights
Qatar Airways	PriceFrom $1,229	Free Cancellation	Rating 7.4 3,604 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,470	Free Cancellation	Rating 7.6 964 reviews	Search Cathay Pacific flights

Mandurah

Fremantle

Scarborough

Rottnest Island

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.