HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Perth

$587+ Cheap flights from Illinois to Perth (PER)

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Perth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,245
(Trip.com)

One-way from

$587
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,350
Provider with most accurate pricing for Chicago (CHI)-Perth flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Perth flights.
Search Deals
From Illinois to Perth
Search Deals
One-way flight from Illinois to Perth
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($210 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($60 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 2, 2025.

This Trip.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1911:50 amORD - PER
2 stops38h 50mMultiple Airlines
Fri 9/59:45 amPER - ORD
2 stops66h 25mMultiple Airlines
Deal found 3/31$1,245
This Gurufare deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/234:00 pmORD - PER
1 stop41h 40mCathay Pacific
Sun 11/3011:05 amPER - ORD
1 stop39h 55mCathay Pacific
Deal found 4/1$1,619
This KAYAK deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/229:00 pmORD - PER
2 stops43h 10mSingapore Airlines
Wed 12/35:30 pmPER - ORD
2 stops36h 40mSingapore Airlines
Deal found 4/1$1,620
This Gurufare deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:45 pmORD - PER
2 stops28h 40mQantas Airways
Tue 12/25:25 amPER - ORD
2 stops31h 35mQantas Airways
Deal found 4/1$1,741
This oojo deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:44 amSTL - PER
2 stops46h 56mQatar Airways
Tue 7/13:20 pmPER - STL
2 stops45h 39mQatar Airways
Deal found 4/1$1,750
This Gurufare deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/247:19 pmSTL - PER
2 stops50h 56mQantas Airways
Mon 8/411:55 pmPER - STL
2 stops32h 36mQantas Airways
Deal found 4/1$1,802
This Expedia deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:30 amSTL - PER
2 stops47h 10mMultiple Airlines
Wed 7/210:45 pmPER - STL
2 stops38h 14mMultiple Airlines
Deal found 4/1$1,927
This Austrian Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/275:20 pmORD - PER
2 stops49h 35mAustrian Airlines
Sun 11/304:35 pmPER - ORD
2 stops35h 30mAustrian Airlines
Deal found 3/31$1,992
This KAYAK deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:35 pmORD - PER
2 stops27h 50mAir New Zealand
Sun 11/306:50 pmPER - ORD
2 stops48h 13mAir New Zealand
Deal found 3/31$2,006
This Gurufare deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1112:00 pmSTL - PER
2 stops30h 45mCathay Pacific
Tue 7/112:10 amPER - STL
2 stops32h 01mCathay Pacific
Deal found 4/1$2,011
This FlightHub deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:55 pmORD - PER
1 stop27h 05mQatar Airways
Sat 11/2910:45 pmPER - ORD
1 stop29h 45mQatar Airways
Deal found 4/1$2,038
This Lufthansa deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:25 pmORD - PER
2 stops60h 30mLufthansa
Sat 11/299:25 amPER - ORD
2 stops47h 00mLufthansa
Deal found 3/31$2,094

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated April 2, 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

Tue 8/19

11:50 am-3:40 pm

2 stops38h 50m

Perth

Fri 9/5

9:45 am-3:10 pm

2 stops66h 25m

$1,245

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 5/6

6:58 pm-5:10 am

2 stops45h 12m

Perth

Mon 5/12

1:10 am-6:20 pm

2 stops30h 10m

$1,675

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 5/13

4:00 pm-10:40 pm

1 stop41h 40m

Perth

Mon 5/19

12:10 am-2:25 pm

1 stop27h 15m

$1,687

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 5/24

7:19 pm-11:15 am

2 stops50h 56m

Perth

Mon 8/4

11:55 pm-7:31 pm

2 stops32h 36m

$1,802

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 5/1

6:30 am-6:40 pm

2 stops47h 10m

Perth

Wed 7/2

10:45 pm-11:59 pm

2 stops38h 14m

$1,927

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 4/12

6:44 am-6:40 pm

2 stops46h 56m

Perth

Mon 6/30

10:45 pm-11:59 pm

2 stops38h 14m

$1,952

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Tue 5/6

7:20 pm-6:40 pm

1 stop34h 20m

Perth

Tue 5/13

10:45 pm-3:05 pm

1 stop29h 20m

$2,052

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Fri 5/16

7:13 pm-1:35 pm

2 stops29h 22m

Perth

Fri 5/23

10:30 am-11:59 pm

2 stops26h 29m

$2,066

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Sat 7/12

11:50 am-8:00 pm

1 stop43h 10m

Perth

Sat 7/26

9:35 pm-8:25 pm

2 stops59h 50m

$2,142

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Fri 5/2

6:11 pm-1:35 pm

2 stops30h 24m

Perth

Thu 7/3

7:50 pm-8:23 pm

2 stops37h 33m

$2,204

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 21 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 round-trip 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 $1,447). Flying from Illinois to Perth in December is currently the most expensive (average of $2,172). 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.

What is the cheapest time of day to fly from IL to PER?

Find hourly flight availability from Illinois to Perth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 2, 2025.

When flying from Illinois to Perth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 - 6.7 inches per month. June is typically the wettest month, when rainfall can reach 6.7 in. January is typically the driest time to visit Perth when rainfall is around 0.0 in.

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 75.2 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 53.6 F).

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 April 2, 2025.
See what other customers who have flown with ANA, Singapore Airlines and Air New Zealand from Illinois to Perth have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Overall

8.3

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
830 reviews
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Overall

8.3

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
1,288 reviews
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Overall

8.3

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
7.9
Good
458 reviews
ANA
8.3
Very good
830 reviews

Entertainment

7.9

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Overall

8.3

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
830 reviews

Entertainment

7.9

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Overall

8.3

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
830 reviews

Entertainment

7.9

Comfort

8.2

Food

7.7

Crew

8.7

Boarding

8.5

Overall

8.3

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?

    If you book a flight to Perth from Illinois, you will be flying to Perth, which is the city’s only airport. Perth (PER) is located 6.3 mi from the center of Perth.

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

    To fly one-way, consider booking your trip with Qantas Airways, which is currently one of the cheapest options available, starting at $965. Air Canada flights start at $1,055 while deals on American Airlines start at $1,094 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 vacation 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 $1,447). Flying from Illinois to Perth in December is currently the most expensive (average of $2,172). 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

Traveling to a place near Illinois?

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

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
Dallas/Fort Worth to Perth flights
Los Angeles to Perth flights
San Francisco to Perth flights
Hobby to Perth flights
Newark to Perth flights
LaGuardia to Perth flights
John F Kennedy Intl to Perth flights
Ontario to Perth flights
Burbank to Perth flights
Santa Ana to Perth flights
George Bush Intcntl to Perth flights
O'Hare Intl to Perth flights
Denver to Perth flights
Boston to Perth flights
Dulles Intl to Perth flights
San Jose to Perth flights
Honolulu to Perth flights
Salt Lake City to Perth flights
Detroit to Perth flights
Reagan-National to Perth flights
Portland to Perth flights
Minneapolis to Perth flights
Raleigh to Perth flights
Oakland to Perth flights
Baltimore to Perth flights
Sky Harbor Intl to Perth flights
Las Vegas to Perth flights
Tampa to Perth flights
Des Moines to Perth flights
Dayton to Perth flights
Indianapolis to Perth flights
Atlanta to Perth flights
Austin to Perth flights
Kansas City to Perth flights
St. Louis to Perth flights
Charlotte to Perth flights
Miami to Perth flights
Columbus to Perth flights
New Orleans to Perth flights
San Diego to Perth flights
O'Hare Intl to Broome flights
Providence to Perth flights
Philadelphia to Perth flights
Tulsa to Perth flights
Cleveland to Perth flights
Nashville to Perth flights
Memphis to Perth flights

Top 3 airlines flying from Illinois to Perth

Discover the top 3 airlines that operate flights from Illinois to Perth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,191Average$1,442FlexibilityNo cancel feeOn-time74%
Cathay PacificCheapest$1,305Average$1,500FlexibilityNo cancel feeOn-time72%
Singapore AirlinesCheapest$1,421Average$1,706FlexibilityNo cancel feeOn-time81%

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.