Find flights
When to book
Airlines
FAQs

Cheap flights from Illinois to Perth from $902

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
5 Apr — 12 Apr1
1 adult

Cheap flight deals from Illinois to Perth

Keep the following information in mind while searching for Illinois to Perth flight deals. Data was last updated 31 March 2025.

Round-trip from

$2,097

One-way from

$902

Popular in

December

Cheapest in

February

Average price

$2,000
15/5-22/5
  • 15/5-22/5
  • 4 total stops
  • 81h 55m total
  • Illinois to Perth
Search Deals
9/9
  • 9/9
  • 3 total stops
  • 40h 10m total
  • Illinois to Perth
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($532 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($154 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Illinois to Perth

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 31 March 2025.

Thu 15/511:25ORD - PER
2 stops43h 05mMultiple Airlines
Thu 22/507:50PER - ORD
2 stops38h 50mMultiple Airlines
Deal found 31/3$2,097
Wed 2/416:00ORD - PER
1 stop26h 45mCathay Pacific
Sun 27/409:15PER - ORD
1 stop42h 10mCathay Pacific
Deal found 29/3$2,307
Fri 7/1113:23ORD - PER
2 stops32h 37mQantas Airways
Sat 22/1117:20PER - ORD
2 stops36h 32mQantas Airways
Deal found 30/3$2,384
Tue 28/1017:50ORD - PER
2 stops46h 35mSingapore Airlines
Mon 10/1101:10PER - ORD
2 stops29h 09mSingapore Airlines
Deal found 30/3$2,498
Tue 29/406:30STL - PER
2 stops47h 10mQatar Airways
Tue 6/522:45PER - STL
2 stops38h 14mQatar Airways
Deal found 30/3$2,528
Tue 15/413:55ORD - PER
2 stops50h 55mEtihad Airways
Tue 29/415:30PER - ORD
2 stops54h 15mEtihad Airways
Deal found 30/3$2,702
Sat 24/519:19STL - PER
2 stops50h 56mQantas Airways
Mon 4/823:55PER - STL
2 stops32h 36mQantas Airways
Deal found 30/3$2,866
Tue 28/1014:00ORD - PER
3 stops35h 30mAir Canada
Tue 11/1122:45PER - ORD
2 stops29h 54mAir Canada
Deal found 30/3$2,915
Wed 2/419:20ORD - PER
1 stop34h 20mQatar Airways
Tue 29/422:45PER - ORD
1 stop29h 20mQatar Airways
Deal found 29/3$3,239
Sat 24/513:42STL - PER
3 stops37h 18mMultiple Airlines
Sun 3/808:05PER - STL
2 stops27h 10mMultiple Airlines
Deal found 31/3$3,502
Tue 29/417:54STL - PER
2 stops38h 41mAir New Zealand
Tue 6/523:55PER - STL
3 stops33h 37mAir New Zealand
Deal found 30/3$3,511
Tue 29/417:27STL - PER
2 stops40h 13mCathay Pacific
Mon 5/500:10PER - STL
2 stops35h 35mCathay Pacific
Deal found 30/3$3,805

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 31 March 2025.
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

Thu 15/5

11:25-19:30

2 stops43h 05m

Perth

Thu 22/5

07:50-09:40

2 stops38h 50m

$2,097

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 6/5

16:00-22:40

1 stop41h 40m

Perth

Mon 12/5

00:10-14:25

1 stop27h 15m

$2,505

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 29/4

06:30-18:40

2 stops47h 10m

Perth

Tue 6/5

22:45-23:59

2 stops38h 14m

$2,528

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 27/9

20:42-23:55

2 stops38h 13m

Perth

Fri 23/1

01:10-17:50

2 stops30h 40m

$2,608

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 15/4

13:55-05:50

2 stops50h 55m

Perth

Tue 29/4

15:30-08:45

2 stops54h 15m

$2,702

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 24/5

19:19-11:15

2 stops50h 56m

Perth

Mon 4/8

23:55-19:31

2 stops32h 36m

$2,866

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 27/9

14:00-15:45

3 stops36h 45m

Perth

Sat 24/1

15:15-19:32

3 stops42h 17m

$3,007

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sun 11/5

19:13-15:25

2 stops31h 12m

Perth

Sun 18/5

10:30-06:07

2 stops32h 37m

$3,028

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 15/4

19:20-18:40

1 stop34h 20m

Perth

Tue 29/4

22:45-15:05

1 stop29h 20m

$3,239

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 15/7

18:20-16:00

2 stops32h 40m

Perth

Tue 29/7

23:45-16:41

2 stops29h 56m

$3,320

Flights are sorted by cheapest return flights first.

Deals found on 30/3

Showing 1-10 of 25 results
1
2
3

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

What is the cheapest month to book a flight from Illinois to Perth?

Currently, February is the cheapest month in which you can book a flight from Illinois to Perth (average of $298). Flying from Illinois to Perth in December is currently the most expensive (average of $409). 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.

Rainfall in Perth by month

Plan your trip to Perth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Perth ranges from 0.0 - 170.0 inches per month. June is typically the wettest month, when rainfall can reach 170.0 mm. January is typically the driest time to visit Perth when rainfall is around 0.0 mm.

Temperature in Perth by month

Plan your trip to Perth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Perth, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Perth

Get insights into the airlines that provide service to Perth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Perth. Reviews last updated 31 March 2025.
Read through reviews of airlines operating flights from Illinois to Perth, such as ANA, Singapore Airlines and Air New Zealand. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very Good
831 reviews
Check prices

Overall

8.3

Comfort

8.2

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
ANA
8.3
Very Good
831 reviews
ANA
8.3
Very Good
831 reviews
Check prices

Overall

8.3

Comfort

8.2

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Singapore Airlines
8.1
Very Good
1,286 reviews
ANA
8.3
Very Good
831 reviews
Check prices

Overall

8.3

Comfort

8.2

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Air New Zealand
8.0
Very Good
459 reviews
ANA
8.3
Very Good
831 reviews
Check prices

Overall

8.3

Comfort

8.2

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Cathay Pacific
7.5
Good
841 reviews
ANA
8.3
Very Good
831 reviews
Check prices

Overall

8.3

Comfort

8.2

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Qantas Airways
7.5
Good
813 reviews
ANA
8.3
Very Good
831 reviews
Check prices

Overall

8.3

Comfort

8.2

Food

7.6

Crew

8.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.

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.

  • What are the cheapest airlines to fly from Illinois to Perth one-way?

    To fly one-way, consider booking your trip with Philippine Airlines, which is currently one of the cheapest options available, starting at $1,271. Qantas Airways flights start at $1,554 while deals on Air Canada start at $1,630 one-way.

  • 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.

  • What is the cheapest month to book a flight from Illinois to Perth?

    Currently, February is the cheapest month in which you can book a flight from Illinois to Perth (average of $298). Flying from Illinois to Perth in December is currently the most expensive (average of $409). 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.

See more FAQs

Travelling to a place near Illinois?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Perth

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Perth flights
John F Kennedy Intl to Perth flights
Los Angeles to Perth flights
Newark to Perth flights
O'Hare Intl to Perth flights
Denver to Perth flights
Raleigh to Perth flights
Reagan-National to Perth flights
San Francisco to Perth flights
Hobby to Perth flights
Atlanta to Perth flights
Boston to Perth flights
Honolulu to Perth flights
George Bush Intcntl to Perth flights
Minneapolis to Perth flights
Charlotte to Perth flights
Sky Harbor Intl to Perth flights
Salt Lake City to Perth flights
Portland to Perth flights
Miami to Perth flights
Orlando to Perth flights
Kansas City to Perth flights
Philadelphia to Perth flights
San Diego to Perth flights
Tampa to Perth flights
Indianapolis to Perth flights
Cleveland to Perth flights
Pittsburgh to Perth flights
Jacksonville to Perth flights
Las Vegas to Perth flights
Tulsa to Perth flights
Fort Lauderdale to Perth flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois to Perth?

When you search for this flight from Illinois to Perth, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Illinois to Perth for you. Better yet — we are completely free to use.

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.