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

To fly one-way, consider booking your trip with EVA Air, which is currently one of the cheapest options available, starting at $1,118. Cathay Pacific flights start at $1,251 while deals on United Airlines start at $1,326 one-way. Find deals

How far in advance should I book a flight from Australia to Illinois?

Users have found that booking a flight from Australia to Illinois at least 38 days early can save you up to 56% on average compared to booking a flight this week. If booking 38 days before your flight isn’t an option for you, users have found flights from Australia to Illinois for as little as $1,767 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,951 for flights departing within the next 3 days. Find deals

What is the cheapest month to fly from Australia to Illinois?

Flights from Australia to Illinois lean towards being more expensive in December. Prices are generally better when you fly from Australia to Illinois in February, with the cheapest ticket starting at $1,026.

Can I find deals for flights from Australia to Illinois that include hotel bookings?

Yes. In addition to deals on Australia to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Australia to Illinois?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to Illinois.

Can I find deals for business class flights from Australia to Illinois?

Yes. Cheapflights offers flight deals from Australia to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$2,107+ Flights from Australia to Illinois

Cheap flight deals from Australia to Illinois

Round-trip from	$1,511
One-way from	$577
Popular in	December
Cheapest in	February
Average price	$1,458

Air Canada
10/6-17/6
4 total stops
72h 50m total
Australia to Illinois

Search Deals

18/4
2 total stops
38h 10m total
Australia to Illinois

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($461 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($105 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Find flight deals from Australia to Illinois

Cheapest flights from Australia to Illinois
Explore the most affordable flight options available from Australia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.

Tue 10/610:20BNE - ORD

2 stops41h 25mAir Canada

Tue 17/610:40ORD - BNE

2 stops29h 25mAir Canada

Deal found 30/3$1,511

Wed 14/513:15SYD - ORD

2 stops32h 27mMultiple Airlines

Wed 21/518:59ORD - SYD

2 stops25h 46mMultiple Airlines

Deal found 29/3$1,544

Thu 22/509:20SYD - ORD

2 stops44h 27mAir Canada

Wed 4/615:35ORD - SYD

1 stop24h 45mAir Canada

Deal found 30/3$1,625

Thu 9/1007:10MEL - ORD

2 stops28h 53mAir Canada

Mon 20/1015:40ORD - MEL

2 stops30h 40mAir Canada

Deal found 30/3$1,652

Thu 9/1007:10MEL - ORD

2 stops28h 53mMultiple Airlines

Mon 20/1009:04ORD - MEL

2 stops36h 16mMultiple Airlines

Deal found 31/3$1,689

Wed 14/509:20SYD - STL

2 stops49h 23mAir Canada

Wed 21/508:48STL - SYD

2 stops31h 32mAir Canada

Deal found 30/3$1,725

Mon 2/608:35MEL - ORD

2 stops29h 38mAir New Zealand

Mon 25/816:35ORD - MEL

2 stops27h 15mAir New Zealand

Deal found 29/3$1,821

Wed 8/1000:45MEL - ORD

1 stop29h 40mCathay Pacific

Mon 20/1016:00ORD - MEL

1 stop28h 15mCathay Pacific

Deal found 31/3$1,846

Tue 1/422:20SYD - ORD

1 stop32h 05mCathay Pacific

Fri 4/416:00ORD - SYD

1 stop27h 50mCathay Pacific

Deal found 30/3$1,897

Mon 2/607:25MEL - ORD

1 stop23h 35mJapan Airlines

Sun 24/801:30ORD - MEL

2 stops40h 20mJapan Airlines

Deal found 29/3$1,916

Wed 3/912:25PER - ORD

2 stops33h 40mJapan Airlines

Sun 7/901:05ORD - PER

2 stops34h 35mJapan Airlines

Deal found 31/3$2,040

Wed 21/509:30MEL - ORD

1 stop20h 12mUnited Airlines

Wed 28/516:40ORD - MEL

1 stop23h 50mUnited Airlines

Deal found 31/3$2,069

Best flights from Australia to Illinois
Discover carefully curated flight deals from Australia to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 March 2025.

Tue 10/610:20BNE - ORD

2 stops41h 25mAir Canada

Tue 17/608:40ORD - BNE

2 stops31h 25mAir Canada

Deal found 29/3$1,511

Wed 14/513:15SYD - ORD

2 stops32h 27mMultiple Airlines

Wed 21/518:59ORD - SYD

2 stops25h 46mMultiple Airlines

Deal found 29/3$1,544

Mon 2/608:35MEL - ORD

2 stops29h 38mAir New Zealand

Mon 25/816:35ORD - MEL

2 stops27h 15mAir New Zealand

Deal found 29/3$1,821

Mon 2/614:25MEL - ORD

1 stop39h 00mCathay Pacific

Mon 25/816:00ORD - MEL

1 stop28h 15mCathay Pacific

Deal found 29/3$1,870

Mon 2/607:25MEL - ORD

1 stop23h 35mJapan Airlines

Sun 24/801:30ORD - MEL

2 stops40h 20mJapan Airlines

Deal found 29/3$1,916

Wed 21/509:30MEL - ORD

1 stop20h 12mUnited Airlines

Wed 28/516:40ORD - MEL

1 stop23h 50mUnited Airlines

Deal found 31/3$2,069

Thu 22/509:25SYD - MDW

2 stops23h 20mDelta

Wed 4/610:25MDW - SYD

2 stops29h 10mDelta

Deal found 30/3$2,109

Mon 11/809:45MEL - ORD

1 stop22h 57mQantas Airways

Mon 22/1215:40ORD - MEL

1 stop22h 55mQantas Airways

Deal found 31/3$2,201

Mon 11/815:05MEL - ORD

1 stop23h 52mAmerican Airlines

Mon 22/1207:00ORD - MEL

2 stops31h 35mAmerican Airlines

Deal found 31/3$2,218

Mon 23/611:50SYD - ORD

2 stops47h 11mANA

Fri 18/717:45ORD - SYD

1 stop34h 30mANA

Deal found 30/3$2,272

Mon 22/922:15BNE - ORD

2 stops46h 55mEVA Air

Tue 30/900:30ORD - BNE

1 stop28h 30mEVA Air

Deal found 29/3$2,388

Tue 2/922:45PER - ORD

1 stop29h 20mQatar Airways

Mon 8/914:37ORD - PER

2 stops32h 18mQatar Airways

Deal found 31/3$2,543

Last-minute flights from Australia to Illinois
Discover last-minute flight deals from Australia to Illinois. Data last updated 31 March 2025 and is based on user searches.

Tue 1/422:20SYD - ORD

1 stop32h 05mCathay Pacific

Fri 4/416:00ORD - SYD

1 stop27h 50mCathay Pacific

Deal found 30/3$1,897

Tue 1/408:25MEL - ORD

1 stop46h 00mCathay Pacific

Sun 6/416:00ORD - MEL

1 stop28h 15mCathay Pacific

Deal found 30/3$1,965

Tue 1/409:55PER - ORD

2 stops48h 05mMultiple Airlines

Sat 19/400:30ORD - PER

2 stops42h 40mMultiple Airlines

Deal found 30/3$2,115

Tue 1/412:25PER - ORD

2 stops33h 40mJapan Airlines

Sun 20/412:05ORD - PER

2 stops45h 35mJapan Airlines

Deal found 30/3$2,458

Thu 3/421:35PER - ORD

1 stop30h 20mANA

Sat 19/417:45ORD - PER

1 stop37h 15mANA

Deal found 31/3$2,309

Fri 4/407:55BNE - ORD

2 stops45h 30mCathay Pacific

Fri 25/416:00ORD - BNE

1 stop39h 25mCathay Pacific

Deal found 30/3$2,396

Sat 5/407:50PER - ORD

2 stops47h 00mMultiple Airlines

Sat 12/421:30ORD - PER

2 stops38h 10mMultiple Airlines

Deal found 31/3$3,556

Sat 5/400:10PER - ORD

2 stops54h 40mFinnair

Thu 24/421:30ORD - PER

2 stops67h 20mFinnair

Deal found 30/3$4,666

Sat 5/400:10PER - ORD

1 stop27h 15mCathay Pacific

Thu 24/416:00ORD - PER

1 stop41h 40mCathay Pacific

Deal found 30/3$4,667

Sun 6/422:45PER - ORD

1 stop29h 20mQatar Airways

Thu 24/419:20ORD - PER

1 stop34h 20mQatar Airways

Deal found 30/3$3,378

Sun 6/422:20PER - ORD

3 stops55h 45mEmirates

Thu 24/420:35ORD - PER

1 stop32h 00mEmirates

Deal found 30/3$3,904

Sun 6/423:55PER - ORD

3 stops52h 00mAir Canada

Thu 24/421:05ORD - PER

3 stops53h 40mAir Canada

Deal found 30/3$5,756

One-way flights from Australia to Illinois
Search for one-way flight options from Australia to Illinois. Find affordable one-way fares based on user searches. Data last updated 31 March 2025.

Fri 18/423:35MEL - ORD

2 stops38h 10mMultiple Airlines

Deal found 31/3$577

Thu 17/412:55MEL - MDW

2 stops24h 32mMultiple Airlines

Deal found 30/3$879

Mon 26/511:55BNE - ORD

3 stops56h 45mMultiple Airlines

Deal found 31/3$924

Thu 3/417:20SYD - ORD

2 stops35h 45mMultiple Airlines

Deal found 31/3$938

Thu 3/414:15SYD - MDW

2 stops24h 12mMultiple Airlines

Deal found 31/3$983

Mon 26/522:15BNE - ORD

1 stop37h 45mEVA Air

Deal found 31/3$1,118

Wed 13/823:10PER - ORD

3 stops36h 58mMultiple Airlines

Deal found 29/3$1,124

Mon 26/523:55BNE - ORD

1 stop29h 30mCathay Pacific

Deal found 31/3$1,251

Thu 10/710:55MEL - ORD

1 stop39h 32mUnited Airlines

Deal found 30/3$1,326

Thu 10/710:55MEL - ORD

1 stop24h 06mLufthansa

Deal found 30/3$1,331

Sun 27/410:10SYD - ORD

1 stop43h 15mCathay Pacific

Deal found 31/3$1,356

Fri 30/509:20SYD - ORD

2 stops44h 27mAir Canada

Deal found 30/3$1,415

Cheapflights Fare Finder

Use the filters below to find and compare flights from Australia to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 10/6

10:20-12:45

2 stops41h 25m

Chicago O'Hare Intl

Tue 17/6

08:40-07:05

2 stops31h 25m

$1,511

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 14/5

13:15-06:42

2 stops32h 27m

Chicago O'Hare Intl

Wed 21/5

18:59-11:45

2 stops25h 46m

$1,544

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 22/5

09:20-14:47

2 stops44h 27m

Chicago O'Hare Intl

Wed 4/6

15:35-07:20

1 stop24h 45m

$1,625

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 14/5

09:20-19:43

2 stops49h 23m

Lambert-St Louis

Wed 21/5

08:48-07:20

2 stops31h 32m

$1,725

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 2/6

08:35-23:13

2 stops29h 38m

Chicago O'Hare Intl

Mon 25/8

16:35-10:50

2 stops27h 15m

$1,821

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sat 24/5

12:55-23:05

2 stops25h 10m

Chicago O'Hare Intl

Wed 28/5

06:10-12:15

2 stops39h 05m

$1,862

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 2/6

14:25-14:25

1 stop39h 00m

Chicago O'Hare Intl

Mon 25/8

16:00-11:15

1 stop28h 15m

$1,870

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Tue 12/8

06:00-14:49

2 stops23h 49m

Chicago O'Hare Intl

Mon 22/12

15:40-15:45

2 stops31h 05m

$1,894

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Mon 2/6

07:25-16:00

1 stop23h 35m

Chicago O'Hare Intl

Sun 24/8

01:30-08:50

2 stops40h 20m

$1,916

PerthChicago

PER - ORD

PERORD

Perth

Wed 3/9

12:25-09:05

2 stops33h 40m

Chicago O'Hare Intl

Sun 7/9

01:05-00:40

2 stops34h 35m

$2,040

Flights are sorted by cheapest return flights first.

Deals found on 30/3

Showing 1-10 of 60 results

...

Best time to book a flight from Australia to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Australia 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 Australia to Illinois

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Australia to Illinois as you normally would.

Rainfall in Illinois by month

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing Illinois

Get a feel of what it's like to fly with Air Tahiti Nui, EVA Air and Korean Air from Australia to Illinois by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui

8.7

Very Good

61 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

EVA Air

8.4

Very Good

1,170 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Korean Air

8.4

Very Good

1,051 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Japan Airlines

8.3

Very Good

1,440 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

ANA

8.3

Very Good

831 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Related info for your journey

What are the cheapest airlines to fly from Australia to Illinois one-way?
To fly one-way, consider booking your trip with EVA Air, which is currently one of the cheapest options available, starting at $1,118. Cathay Pacific flights start at $1,251 while deals on United Airlines start at $1,326 one-way.
Can I find deals for flights from Australia to Illinois that include hotel bookings?
Yes. In addition to deals on Australia to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Australia to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to Illinois.
Can I find deals for business class flights from Australia to Illinois?
Yes. Cheapflights offers flight deals from Australia to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Australia to Illinois

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$728	Average$1,893	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Qantas Airways	Cheapest$1,012	Average$1,815	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Air New Zealand	Cheapest$1,229	Average$1,846	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
Air Canada	Cheapest$1,323	Average$1,940	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,615	Average$2,309	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
ANA	Cheapest$1,679	Average$2,170	FlexibilityNo cancel fee	On-time80%	Search ANA flights
Virgin Australia	Cheapest$1,765	Average$2,840	FlexibilityNo cancel fee	On-time80%	Search Virgin Australia flights
Delta	Cheapest$1,859	Average$1,993	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Cathay Pacific	Cheapest$2,081	Average$2,439	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Japan Airlines	Cheapest$2,108	Average$2,649	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Australia to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Illinois from Australia.

Can Cheapflights find flights from Australia to Illinois with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Australia to Illinois flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Australia to Illinois become cheaper?

Yes, Cheapflights offers price alerts on Australia to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Australia to Illinois from $577

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 18/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Australia to Illinois

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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Australia to Illinois

Cheapest flights from Australia to IllinoisExplore the most affordable flight options available from Australia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.

Explore the most affordable flight options available from Australia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Australia to Illinois that are best for you.

Best time to book a flight from Australia to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Australia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Australia to Illinois

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

Find hourly flight availability from Australia to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 March 2025.

Rainfall in Illinois by month

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

Temperature in Illinois by month

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

Reviews of airlines servicing Illinois

Related info for your journey

Find useful and relevant information for your journey from Australia to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

Can I find deals for flights from Australia to Illinois that include hotel bookings?

How can I find direct flights from Australia to Illinois?

Can I find deals for business class flights from Australia to Illinois?

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 Australia to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Australia to Illinois

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 Australia to Illinois?

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

Can Cheapflights find flights from Australia to Illinois with no change fees?

Can Cheapflights notify me if prices for flights from Australia to Illinois become cheaper?

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Travel Smart

Cheapest flights from Australia to Illinois
Explore the most affordable flight options available from Australia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.