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Cheap flights from Illinois to Perth from $1,335

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 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PER
6 May — 13 May1
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 1 May 2025.

Round-trip from

$2,062

One-way from

$1,335

Popular in

December

Cheapest in

February

Average price

$1,976
24/10-30/11
  • 24/10-30/11
  • 4 total stops
  • 100h 30m total
  • Illinois to Perth
Search Deals
25/9
  • 25/9
  • 2 total stops
  • 36h 12m total
  • Illinois to Perth
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($425 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($130 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 1 May 2025.

Wed 29/1014:10ORD - PER
2 stops40h 40mMultiple Airlines
Sat 8/1104:40PER - ORD
2 stops41h 35mMultiple Airlines
Deal found 29/4$1,971
Wed 29/1015:40ORD - PER
1 stop28h 55mCathay Pacific
Sat 8/1100:15PER - ORD
1 stop26h 45mCathay Pacific
Deal found 29/4$2,216
Sun 5/1007:00STL - PER
2 stops46h 40mQatar Airways
Fri 17/1022:45PER - STL
2 stops38h 11mQatar Airways
Deal found 30/4$2,265
Wed 26/1115:24ORD - PER
2 stops30h 36mQantas Airways
Sat 13/1215:20PER - ORD
2 stops40h 08mQantas Airways
Deal found 30/4$2,354
Wed 29/1016:35ORD - PER
2 stops35h 20mAir New Zealand
Sun 9/1118:50PER - ORD
2 stops39h 32mAir New Zealand
Deal found 29/4$2,373
Fri 3/1006:00STL - PER
2 stops47h 40mMultiple Airlines
Mon 13/1022:45PER - STL
2 stops38h 11mMultiple Airlines
Deal found 30/4$2,410
Wed 22/1021:00ORD - PER
2 stops37h 55mSingapore Airlines
Wed 3/1213:50PER - ORD
2 stops40h 20mSingapore Airlines
Deal found 30/4$2,535
Tue 6/519:19STL - PER
2 stops38h 21mCathay Pacific
Sun 1/600:10PER - STL
2 stops35h 35mCathay Pacific
Deal found 30/4$2,707
Mon 6/1017:43STL - PER
2 stops35h 02mAir New Zealand
Sat 18/1019:50PER - STL
2 stops39h 10mAir New Zealand
Deal found 30/4$2,774
Mon 27/1018:00ORD - PER
2 stops31h 45mUnited Airlines
Sun 30/1123:45PER - ORD
2 stops39h 26mUnited Airlines
Deal found 30/4$3,038
Thu 23/1013:55ORD - PER
2 stops50h 55mEtihad Airways
Sun 30/1123:15PER - ORD
2 stops47h 00mEtihad Airways
Deal found 30/4$3,057
Fri 3/1017:43STL - PER
2 stops32h 02mUnited Airlines
Sat 18/1015:30PER - STL
2 stops38h 12mUnited Airlines
Deal found 30/4$3,126

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 1 May 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

Fri 24/10

00:30-04:50

2 stops39h 20m

Perth

Sun 30/11

20:25-19:35

2 stops61h 10m

$2,062

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sun 5/10

07:00-18:40

2 stops46h 40m

Perth

Fri 17/10

22:45-23:56

2 stops38h 11m

$2,265

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Fri 3/10

06:00-18:40

2 stops47h 40m

Perth

Mon 13/10

22:45-23:56

2 stops38h 11m

$2,410

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Thu 23/10

16:00-22:40

1 stop41h 40m

Perth

Sun 30/11

11:05-13:00

1 stop39h 55m

$2,488

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 22/10

16:25-16:00

2 stops34h 35m

Perth

Mon 1/12

18:50-05:05

2 stops48h 15m

$2,507

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Wed 22/10

21:00-23:55

2 stops37h 55m

Perth

Wed 3/12

13:50-16:10

2 stops40h 20m

$2,535

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 27/10

18:45-14:20

2 stops30h 35m

Perth

Tue 2/12

22:40-16:00

2 stops31h 20m

$2,707

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Fri 3/10

08:26-07:45

2 stops34h 19m

Perth

Sun 12/10

00:10-22:34

2 stops35h 24m

$2,745

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 6/10

17:43-17:45

2 stops35h 02m

Perth

Sat 18/10

19:50-22:00

2 stops39h 10m

$2,774

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 27/10

18:00-14:45

2 stops31h 45m

Perth

Sun 30/11

23:45-01:11

2 stops39h 26m

$3,038

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 24 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, March is the cheapest month in which you can book a flight from Illinois to Perth (average of $296). 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 1 May 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
852 reviews
Check prices

Comfort

8.1

Boarding

8.5

Entertainment

7.9

Overall

8.3

Crew

8.7

Food

7.6

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
852 reviews
ANA
8.3
Very Good
852 reviews
Check prices

Comfort

8.1

Boarding

8.5

Entertainment

7.9

Overall

8.3

Crew

8.7

Food

7.6

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
1,292 reviews
ANA
8.3
Very Good
852 reviews
Check prices

Comfort

8.1

Boarding

8.5

Entertainment

7.9

Overall

8.3

Crew

8.7

Food

7.6

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
472 reviews
ANA
8.3
Very Good
852 reviews
Check prices

Comfort

8.1

Boarding

8.5

Entertainment

7.9

Overall

8.3

Crew

8.7

Food

7.6

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
855 reviews
ANA
8.3
Very Good
852 reviews
Check prices

Comfort

8.1

Boarding

8.5

Entertainment

7.9

Overall

8.3

Crew

8.7

Food

7.6

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
829 reviews
ANA
8.3
Very Good
852 reviews
Check prices

Comfort

8.1

Boarding

8.5

Entertainment

7.9

Overall

8.3

Crew

8.7

Food

7.6

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 Singapore Airlines, which is currently one of the cheapest options available, starting at $1,733. Qatar Airways flights start at $1,772 while deals on Qantas Airways start at $1,833 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, March is the cheapest month in which you can book a flight from Illinois to Perth (average of $296). 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

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