How long is the flight from Australia to Illinois?

Airlines like United Airlines, American Airlines, and Air New Zealand fly from Australia to Illinois in about 24h 34m. The time it takes to get you to your destination can typically vary by up to 13h 01m. There are 14318 km between Australia and Illinois. This flight may include one or multiple stops. Find deals

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

To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $192. Qantas Airways flights start at $570 while deals on Cathay Pacific start at $996 one-way. Find deals

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.

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).

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.

$875+ Flights from Australia to Illinois

Cheap flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

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 18 December 2025.

Sun 21/1211:30MEL - STL

2 stops27h 52mUnited Airlines

Fri 2/108:05STL - MEL

2 stops32h 55mUnited Airlines

Deal found 15/12$1,327

Wed 17/1211:30MEL - ORD

2 stops26h 37mUnited Airlines

Wed 24/1210:56ORD - MEL

2 stops29h 34mUnited Airlines

Deal found 15/12$1,526

Mon 22/1211:40BNE - ORD

1 stop29h 29mUnited Airlines

Thu 19/311:00ORD - BNE

1 stop28h 30mUnited Airlines

Deal found 17/12$1,619

Thu 25/1210:40SYD - MDW

2 stops23h 39mDelta

Wed 21/109:50MDW - SYD

2 stops29h 40mDelta

Deal found 17/12$1,735

Thu 25/1214:00SYD - ORD

1 stop20h 04mUnited Airlines

Wed 21/113:00ORD - SYD

2 stops27h 15mUnited Airlines

Deal found 17/12$1,735

Thu 18/1211:50SYD - ORD

1 stop23h 55mUnited Airlines

Thu 22/118:29ORD - SYD

1 stop21h 46mUnited Airlines

Deal found 17/12$1,808

Thu 25/1214:00SYD - ORD

1 stop20h 04mUnited Airlines

Fri 23/120:10ORD - SYD

1 stop43h 55mUnited Airlines

Deal found 16/12$1,812

Sat 20/1214:00SYD - ORD

2 stops27h 14mUnited Airlines

Sat 10/109:01ORD - SYD

2 stops28h 19mUnited Airlines

Deal found 16/12$1,888

Thu 25/1212:10SYD - ORD

1 stop24h 55mVirgin Australia

Wed 21/116:16ORD - SYD

1 stop23h 59mVirgin Australia

Deal found 17/12$2,036

Mon 22/1220:55BNE - ORD

2 stops39h 30mVirgin Australia

Thu 19/314:35ORD - BNE

2 stops30h 45mVirgin Australia

Deal found 16/12$2,045

Sat 20/1211:20SYD - ORD

1 stop34h 17mVirgin Australia

Sat 10/120:10ORD - SYD

1 stop43h 55mVirgin Australia

Deal found 16/12$2,077

Thu 25/1214:15SYD - ORD

2 stops36h 10mDelta

Fri 23/105:30ORD - SYD

2 stops34h 00mDelta

Deal found 18/12$2,093

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 18 December 2025.

Sat 24/111:40BNE - ORD

2 stops24h 34mUnited Airlines

Sun 25/114:40ORD - BNE

1 stop24h 50mUnited Airlines

Deal found 15/12$1,200

Tue 17/308:40BNE - ORD

2 stops37h 35mAmerican Airlines

Wed 1/409:25ORD - BNE

2 stops28h 35mAmerican Airlines

Deal found 18/12$1,283

Wed 14/110:10MEL - MDW

2 stops24h 24mDelta

Tue 12/518:45MDW - MEL

2 stops46h 05mDelta

Deal found 17/12$1,534

Tue 2/612:40ADL - ORD

2 stops25h 45mMultiple Airlines

Tue 4/817:51ORD - ADL

2 stops25h 04mMultiple Airlines

Deal found 16/12$1,576

Tue 3/211:45SYD - ORD

2 stops25h 20mAir New Zealand

Mon 9/214:40ORD - SYD

2 stops25h 05mAir New Zealand

Deal found 17/12$1,620

Wed 18/211:20SYD - STL

2 stops26h 06mAir Canada

Sun 22/218:00STL - SYD

2 stops46h 35mAir Canada

Deal found 17/12$1,759

Thu 11/611:50SYD - ORD

2 stops32h 15mANA

Thu 6/817:45ORD - SYD

1 stop24h 40mANA

Deal found 16/12$1,838

Wed 4/206:00MEL - STL

2 stops25h 43mQantas Airways

Sun 8/217:20STL - MEL

2 stops25h 05mQantas Airways

Deal found 16/12$1,888

Fri 13/308:40BNE - ORD

2 stops37h 35mAmerican Airlines

Tue 17/313:40ORD - BNE

1 stop24h 20mAmerican Airlines

Deal found 15/12$1,289

Thu 19/319:40BNE - ORD

2 stops37h 25mAmerican Airlines

Mon 23/309:28ORD - BNE

1 stop28h 32mAmerican Airlines

Deal found 17/12$1,383

Wed 14/110:10MEL - MDW

2 stops25h 22mDelta

Sun 10/518:45MDW - MEL

2 stops46h 05mDelta

Deal found 17/12$1,534

Fri 13/312:00MEL - ORD

2 stops24h 00mUnited Airlines

Fri 27/316:00ORD - MEL

2 stops24h 30mUnited Airlines

Deal found 17/12$1,675

Wed 14/110:10MEL - MDW

2 stops25h 22mDelta

Mon 11/514:00MDW - MEL

2 stops26h 50mDelta

Deal found 17/12$1,534

Sat 16/511:55SYD - ORD

2 stops26h 33mAir New Zealand

Sat 6/616:40ORD - SYD

2 stops25h 05mAir New Zealand

Deal found 17/12$1,770

Sun 1/317:45SYD - ORD

1 stop20h 46mMultiple Airlines

Mon 16/316:45ORD - SYD

1 stop24h 15mMultiple Airlines

Deal found 17/12$1,806

Sat 31/114:55ADL - ORD

1 stop31h 19mUnited Airlines

Sat 7/218:29ORD - ADL

1 stop22h 31mUnited Airlines

Deal found 17/12$1,685

Wed 14/110:10MEL - MDW

2 stops24h 24mDelta

Wed 6/513:00MDW - MEL

2 stops27h 50mDelta

Deal found 17/12$1,534

Sun 1/311:45SYD - ORD

2 stops28h 14mAir New Zealand

Mon 16/314:35ORD - SYD

2 stops26h 10mAir New Zealand

Deal found 17/12$1,826

Sat 17/111:30MEL - ORD

1 stop25h 55mUnited Airlines

Fri 20/218:20ORD - MEL

1 stop22h 10mUnited Airlines

Deal found 17/12$1,690

Tue 3/311:20SYD - ORD

1 stop23h 16mAmerican Airlines

Tue 14/417:30ORD - SYD

1 stop22h 35mAmerican Airlines

Deal found 16/12$1,726

Wed 14/110:10MEL - MDW

2 stops25h 22mDelta

Thu 7/518:45MDW - MEL

2 stops46h 05mDelta

Deal found 17/12$1,610

Wed 18/211:20SYD - STL

1 stop29h 28mQantas Airways

Sun 22/215:31STL - SYD

2 stops26h 24mQantas Airways

Deal found 17/12$2,173

Sat 31/106:10ADL - ORD

2 stops25h 01mAir Canada

Sat 7/214:00ORD - ADL

3 stops31h 25mAir Canada

Deal found 17/12$2,216

Sun 18/110:10MEL - MDW

2 stops24h 24mDelta

Wed 6/510:35MDW - MEL

2 stops30h 15mDelta

Deal found 17/12$1,610

Sun 1/311:20SYD - ORD

2 stops22h 45mUnited Airlines

Mon 16/319:40ORD - SYD

1 stop21h 25mUnited Airlines

Deal found 17/12$1,811

Sun 1/317:45SYD - ORD

1 stop22h 55mAmerican Airlines

Mon 16/317:25ORD - SYD

2 stops23h 35mAmerican Airlines

Deal found 17/12$1,818

Thu 5/206:00ADL - ORD

3 stops47h 31mAir Canada

Mon 9/214:00ORD - ADL

3 stops36h 40mAir Canada

Deal found 15/12$2,243

Fri 16/110:10MEL - MDW

2 stops28h 57mDelta

Tue 12/518:45MDW - MEL

2 stops46h 05mDelta

Deal found 17/12$1,610

Wed 14/111:30MEL - STL

2 stops28h 28mUnited Airlines

Wed 21/114:45STL - MEL

2 stops25h 45mUnited Airlines

Deal found 17/12$1,845

Sun 18/110:10MEL - MDW

2 stops24h 24mDelta

Mon 11/510:35MDW - MEL

2 stops30h 15mDelta

Deal found 17/12$1,610

Last-minute flights from Australia to Illinois
Discover last-minute flight deals from Australia to Illinois. Data last updated 18 December 2025 and is based on user searches.

Wed 17/1211:30MEL - ORD

1 stop28h 29mUnited Airlines

Wed 24/1218:32ORD - MEL

1 stop21h 58mUnited Airlines

Deal found 15/12$1,526

Sun 21/1211:30MEL - STL

2 stops27h 52mUnited Airlines

Fri 2/108:05STL - MEL

2 stops32h 55mUnited Airlines

Deal found 15/12$1,327

Mon 22/1211:40BNE - ORD

1 stop29h 29mUnited Airlines

Thu 19/311:00ORD - BNE

1 stop28h 30mUnited Airlines

Deal found 17/12$1,619

Wed 14/110:10MEL - MDW

2 stops25h 22mDelta

Sun 10/518:45MDW - MEL

2 stops46h 05mDelta

Deal found 17/12$1,534

Wed 14/110:10MEL - ORD

2 stops24h 16mDelta

Tue 12/519:59ORD - MEL

2 stops44h 51mDelta

Deal found 17/12$1,534

Fri 16/110:10MEL - MDW

2 stops28h 57mDelta

Tue 12/518:45MDW - MEL

2 stops46h 05mDelta

Deal found 17/12$1,610

Fri 16/110:10MEL - ORD

2 stops28h 33mDelta

Mon 11/515:50ORD - MEL

2 stops25h 00mDelta

Deal found 17/12$1,610

Sat 17/112:00MEL - ORD

1 stop21h 49mAmerican Airlines

Tue 12/508:15ORD - MEL

2 stops31h 30mAmerican Airlines

Deal found 17/12$1,584

Sat 17/107:00MEL - ORD

2 stops31h 23mAmerican Airlines

Sat 9/520:20ORD - MEL

1 stop43h 25mAmerican Airlines

Deal found 17/12$1,616

Sat 24/111:40BNE - ORD

2 stops24h 34mUnited Airlines

Sun 25/114:40ORD - BNE

1 stop24h 50mUnited Airlines

Deal found 15/12$1,200

Sat 24/110:45BNE - ORD

2 stops23h 03mAir Canada

Sun 25/110:35ORD - BNE

2 stops30h 10mAir Canada

Deal found 15/12$1,601

Thu 29/113:00MEL - ORD

1 stop22h 48mUnited Airlines

Thu 5/217:16ORD - MEL

1 stop23h 44mUnited Airlines

Deal found 15/12$1,604

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 18 December 2025.

Wed 14/116:05MEL - STL

1 stop20h 24mAmerican Airlines

Deal found 17/12$875

Wed 14/113:00MEL - STL

2 stops37h 22mUnited Airlines

Deal found 16/12$884

Thu 30/400:30MEL - ORD

3 stops45h 16mMultiple Airlines

Deal found 16/12$964

Mon 11/509:35BNE - ORD

2 stops28h 54mAir New Zealand

Deal found 17/12$973

Mon 11/522:15BNE - ORD

1 stop37h 45mEVA Air

Deal found 17/12$979

Tue 10/312:10MEL - ORD

2 stops24h 05mAir New Zealand

Deal found 14/12$982

Mon 11/512:35BNE - ORD

1 stop40h 50mCathay Pacific

Deal found 17/12$1,016

Fri 1/500:30MEL - ORD

3 stops45h 16mMultiple Airlines

Deal found 16/12$1,025

Sat 2/508:35MEL - ORD

2 stops29h 53mAir New Zealand

Deal found 16/12$1,058

Thu 30/411:55SYD - ORD

2 stops28h 04mAir New Zealand

Deal found 16/12$1,058

Mon 11/523:30BNE - ORD

3 stops46h 16mMultiple Airlines

Deal found 17/12$1,075

Tue 10/318:50MEL - ORD

3 stops57h 11mMultiple Airlines

Deal found 14/12$1,093

Find flight deals from Australia to Illinois

Round-trip from	$1,200
One-way from	$875
Popular in	December
Cheapest in	March
Average price	$2,211

United Airlines
24/1-25/1
3 total stops
49h 24m total
Australia to Illinois

Search Deals

American Airlines
14/1
1 total stop
20h 24m total
Australia to Illinois

Search Deals

Highest demand for flights based on searches. 20% potential increase in price ($589 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($102 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Sat 24/1

11:40-20:14

2 stops24h 34m

Chicago O'Hare Intl

Sun 25/1

14:40-07:30

1 stop24h 50m

$1,200

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Tue 17/3

08:40-07:15

2 stops37h 35m

Chicago O'Hare Intl

Wed 1/4

09:25-05:00

2 stops28h 35m

$1,283

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Fri 13/3

08:40-07:15

2 stops37h 35m

Chicago O'Hare Intl

Tue 17/3

13:40-05:00

1 stop24h 20m

$1,289

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 19/3

19:40-18:05

2 stops37h 25m

Chicago O'Hare Intl

Mon 23/3

09:28-05:00

1 stop28h 32m

$1,383

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Wed 14/1

10:10-17:34

2 stops24h 24m

Chicago Midway

Tue 12/5

18:45-07:50

2 stops46h 05m

$1,534

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Wed 14/1

10:10-18:32

2 stops25h 22m

Chicago Midway

Sun 10/5

18:45-07:50

2 stops46h 05m

$1,534

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Wed 14/1

10:10-18:32

2 stops25h 22m

Chicago Midway

Mon 11/5

14:00-07:50

2 stops26h 50m

$1,534

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Wed 14/1

10:10-17:34

2 stops24h 24m

Chicago Midway

Wed 6/5

13:00-07:50

2 stops27h 50m

$1,534

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Tue 2/6

12:40-23:55

2 stops25h 45m

Chicago O'Hare Intl

Tue 4/8

17:51-09:25

2 stops25h 04m

$1,576

MelbourneChicago

MEL - MDW

MELMDW

Melbourne

Wed 14/1

10:10-18:32

2 stops25h 22m

Chicago Midway

Thu 7/5

18:45-07:50

2 stops46h 05m

$1,610

Flights are sorted by cheapest return flights first.

Deals found on 17/12

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 month to book a flight from Australia to Illinois?

Currently, May is the cheapest month in which you can book a flight from Australia to Illinois (average of $917). Flying from Australia to Illinois in December is currently the most expensive (average of $1,551). 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 AU to IL?

One of the essential ways to save on airfare from Australia to Illinois is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 12% on airfare.

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

Travellers seeking maximum savings on their Australia to Illinois flight should consider departing on Friday afternoons when fares are most often at their lowest. Thursday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Illinois

Read reviews from past customers who have flown with Air New Zealand, Qantas Airways, andUnited Airlines from Australia to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Air New Zealand

8.0

Very Good

553 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

Air New Zealand

8.0

Very Good

553 reviews

Air New Zealand

8.0

Very Good

553 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

Qantas Airways

7.5

Good

947 reviews

Air New Zealand

8.0

Very Good

553 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

United Airlines

7.4

Good

9,093 reviews

Air New Zealand

8.0

Very Good

553 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

American Airlines

7.2

Good

11,055 reviews

Air New Zealand

8.0

Very Good

553 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

Air Canada

7.1

Good

10,534 reviews

Air New Zealand

8.0

Very Good

553 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

Related info for your journey

How long is the flight from Australia to Illinois?
Airlines like United Airlines, American Airlines, and Air New Zealand fly from Australia to Illinois in about 24h 34m. The time it takes to get you to your destination can typically vary by up to 13h 01m. There are 14318 km between Australia and Illinois. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Australia to Illinois one-way?
To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $192. Qantas Airways flights start at $570 while deals on Cathay Pacific start at $996 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.
What is the cheapest month to book a flight from Australia to Illinois?
Currently, May is the cheapest month in which you can book a flight from Australia to Illinois (average of $917). Flying from Australia to Illinois in December is currently the most expensive (average of $1,551). 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

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
Qantas Airways	Cheapest$958	Average$1,567	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Air New Zealand	Cheapest$1,161	Average$1,647	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
American Airlines	Cheapest$1,168	Average$1,689	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest$1,181	Average$1,716	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,349	Average$2,133	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Cathay Pacific	Cheapest$1,470	Average$2,001	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
ANA	Cheapest$1,588	Average$1,718	FlexibilityNo cancel fee	On-time80%	Search ANA flights
Japan Airlines	Cheapest$1,955	Average$2,330	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights
Virgin Australia	Cheapest$2,164	Average$3,036	FlexibilityNo cancel fee	On-time80%	Search Virgin Australia flights
Qatar Airways	Cheapest$2,467	Average$3,185	FlexibilityNo cancel fee	On-time68%	Search Qatar Airways 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 $875

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 18 December 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 18 December 2025.

Find flight deals from Australia to Illinois

Keep the following information in mind while searching for Australia to Illinois flight deals. Data was last updated 18 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 month to book a 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 18 December 2025.

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

Use this chart to determine the cheapest time to fly return from Australia to Illinois. Price data was last updated on 16 December 2024.

Reviews of airlines servicing Illinois

Read reviews from past customers who have flown with Air New Zealand, Qantas Airways, andUnited Airlines from Australia to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.

How long is the flight from Australia to Illinois?

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?

What is the cheapest month to book a flight 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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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 18 December 2025.