How long is the flight from Australia to Illinois?

Airlines like Air Canada, United Airlines, and Alaska Airlines fly from Australia to Illinois in about 22h 02m. The time it takes to get you to your destination can typically vary by up to 23h 07m. There are 15255 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 American Airlines, which is currently one of the cheapest options available, starting at $760. United Airlines flights start at $763 while deals on Etihad Airways start at $966 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. Find deals

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). 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 44 days early can save you up to 49% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from Australia to Illinois for as little as $1,718 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 $2,437 for flights departing within the next 3 days.

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 $986.

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.

$753+ Flights from Australia to Illinois

Cheap flight deals from Australia to Illinois

Round-trip from	$1,220
One-way from	$753
Popular in	December
Cheapest in	February
Average price	$1,605

Air Canada
25/11-9/12
4 total stops
72h 09m total
Australia to Illinois

Search Deals

15/10
3 total stops
45h 04m total
Australia to Illinois

Search Deals

Highest demand for flights based on searches. 22% potential increase in price ($712 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($117 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 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 25 August 2025.

Tue 25/1111:20SYD - STL

2 stops45h 09mAir Canada

Tue 9/1213:35STL - SYD

2 stops27h 00mAir Canada

Deal found 24/8$1,220

Tue 25/1111:20SYD - STL

2 stops45h 09mAir Canada

Sat 13/1209:00STL - SYD

2 stops28h 55mAir Canada

Deal found 24/8$1,248

Tue 25/1111:20SYD - STL

2 stops45h 09mAir Canada

Sun 14/1216:05STL - SYD

2 stops48h 30mAir Canada

Deal found 24/8$1,251

Wed 8/1010:30MEL - STL

2 stops22h 02mUnited Airlines

Wed 15/1013:40STL - MEL

2 stops26h 50mUnited Airlines

Deal found 23/8$1,253

Thu 27/1111:20SYD - STL

2 stops45h 09mAir Canada

Thu 11/1213:35STL - SYD

2 stops24h 20mAir Canada

Deal found 25/8$1,254

Tue 7/1010:30SYD - STL

2 stops22h 02mUnited Airlines

Tue 14/1013:40STL - SYD

2 stops26h 15mUnited Airlines

Deal found 23/8$1,256

Thu 27/1111:20SYD - STL

2 stops45h 09mAir Canada

Wed 10/1213:35STL - SYD

2 stops48h 20mAir Canada

Deal found 25/8$1,263

Tue 25/1111:20SYD - STL

2 stops45h 09mAir Canada

Fri 12/1216:05STL - SYD

2 stops45h 50mAir Canada

Deal found 25/8$1,265

Fri 14/1111:30MEL - STL

2 stops21h 58mUnited Airlines

Thu 20/1116:35STL - MEL

2 stops47h 55mUnited Airlines

Deal found 24/8$1,274

Sat 22/1111:20SYD - STL

2 stops22h 08mUnited Airlines

Sat 6/1211:25STL - SYD

2 stops26h 35mUnited Airlines

Deal found 25/8$1,283

Sat 22/1110:40SYD - STL

2 stops28h 18mDelta

Wed 10/1211:51STL - SYD

2 stops27h 39mDelta

Deal found 25/8$1,285

Tue 25/1111:20SYD - STL

2 stops45h 09mAir Canada

Thu 11/1213:35STL - SYD

2 stops24h 20mAir Canada

Deal found 24/8$1,287

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 25 August 2025.

Tue 25/1111:20SYD - STL

2 stops45h 09mAir Canada

Tue 9/1213:35STL - SYD

2 stops27h 00mAir Canada

Deal found 24/8$1,220

Wed 8/1010:30MEL - STL

2 stops22h 02mUnited Airlines

Wed 15/1013:40STL - MEL

2 stops26h 50mUnited Airlines

Deal found 23/8$1,253

Tue 4/1121:40SYD - ORD

2 stops43h 19mAlaska Airlines

Sun 16/1109:20ORD - SYD

2 stops41h 25mAlaska Airlines

Deal found 25/8$1,474

Wed 10/911:50SYD - ORD

2 stops24h 50mAir New Zealand

Tue 23/914:25ORD - SYD

2 stops27h 20mAir New Zealand

Deal found 24/8$1,487

Thu 13/1122:35BNE - ORD

1 stop37h 00mEVA Air

Sat 29/1123:30ORD - BNE

1 stop28h 50mEVA Air

Deal found 25/8$1,524

Sun 7/913:20MEL - ORD

2 stops24h 23mMultiple Airlines

Sun 14/906:30ORD - MEL

2 stops38h 55mMultiple Airlines

Deal found 24/8$1,558

Sun 1/211:05MEL - ORD

2 stops23h 33mAmerican Airlines

Sun 15/207:18ORD - MEL

1 stop33h 12mAmerican Airlines

Deal found 25/8$1,653

Sat 6/900:10PER - ORD

2 stops45h 55mJapan Airlines

Sun 21/901:05ORD - PER

2 stops32h 35mJapan Airlines

Deal found 24/8$1,667

Wed 12/1100:10BNE - ORD

1 stop28h 50mCathay Pacific

Sat 29/1114:40ORD - BNE

1 stop40h 00mCathay Pacific

Deal found 24/8$1,669

Thu 4/921:35PER - ORD

2 stops35h 50mANA

Thu 18/911:50ORD - PER

1 stop43h 10mANA

Deal found 24/8$1,747

Mon 3/1110:40SYD - MDW

2 stops28h 34mDelta

Wed 19/1109:41MDW - SYD

2 stops29h 49mDelta

Deal found 25/8$2,075

Wed 8/1006:05ADL - ORD

2 stops24h 10mVirgin Australia

Wed 15/1016:25ORD - ADL

2 stops28h 15mVirgin Australia

Deal found 24/8$2,203

Last-minute flights from Australia to Illinois
Discover last-minute flight deals from Australia to Illinois. Data last updated 25 August 2025 and is based on user searches.

Tue 2/900:10PER - ORD

2 stops45h 55mJapan Airlines

Wed 12/1117:35ORD - PER

2 stops47h 20mJapan Airlines

Deal found 24/8$1,667

Wed 3/908:45SYD - ORD

2 stops27h 55mAir New Zealand

Tue 16/916:50ORD - SYD

2 stops24h 55mAir New Zealand

Deal found 24/8$1,596

Wed 3/909:10SYD - ORD

1 stop27h 12mAmerican Airlines

Tue 16/917:46ORD - SYD

1 stop22h 19mAmerican Airlines

Deal found 24/8$1,656

Thu 4/921:35PER - ORD

2 stops35h 50mANA

Thu 18/911:50ORD - PER

1 stop43h 10mANA

Deal found 24/8$1,747

Sat 6/900:10PER - ORD

2 stops45h 55mJapan Airlines

Mon 22/912:10ORD - PER

2 stops30h 35mJapan Airlines

Deal found 24/8$1,744

Sun 7/913:20MEL - ORD

2 stops24h 23mMultiple Airlines

Sun 14/906:30ORD - MEL

2 stops38h 55mMultiple Airlines

Deal found 24/8$1,558

Mon 8/909:10SYD - ORD

1 stop23h 46mAmerican Airlines

Mon 15/915:52ORD - SYD

1 stop24h 13mAmerican Airlines

Deal found 25/8$1,676

Wed 10/911:50SYD - ORD

2 stops24h 50mAir New Zealand

Tue 23/914:25ORD - SYD

2 stops27h 20mAir New Zealand

Deal found 24/8$1,487

Wed 10/909:10SYD - ORD

2 stops23h 58mAmerican Airlines

Tue 23/917:46ORD - SYD

1 stop22h 19mAmerican Airlines

Deal found 24/8$1,661

Sun 14/911:50SYD - ORD

2 stops24h 50mAir New Zealand

Wed 3/1213:00ORD - SYD

2 stops26h 45mAir New Zealand

Deal found 24/8$1,626

Mon 22/909:10SYD - ORD

1 stop28h 33mMultiple Airlines

Sat 27/907:00ORD - SYD

1 stop33h 30mMultiple Airlines

Deal found 25/8$1,578

Tue 23/906:00MEL - STL

3 stops28h 38mMultiple Airlines

Tue 30/909:15STL - MEL

3 stops41h 50mMultiple Airlines

Deal found 23/8$1,632

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 25 August 2025.

Wed 15/1017:20SYD - ORD

3 stops45h 04mMultiple Airlines

Deal found 24/8$753

Mon 10/1111:20SYD - STL

2 stops22h 20mAmerican Airlines

Deal found 25/8$760

Mon 10/1111:50SYD - STL

1 stop27h 32mUnited Airlines

Deal found 25/8$766

Sun 21/916:20SYD - ORD

2 stops45h 23mMultiple Airlines

Deal found 24/8$850

Wed 19/1111:20BNE - ORD

3 stops35h 05mMultiple Airlines

Deal found 24/8$854

Wed 15/1007:00BNE - ORD

3 stops31h 59mMultiple Airlines

Deal found 23/8$891

Wed 15/1013:55MEL - ORD

3 stops26h 04mMultiple Airlines

Deal found 25/8$920

Sun 21/916:20SYD - MDW

3 stops46h 00mMultiple Airlines

Deal found 24/8$938

Sat 15/1107:25MEL - STL

3 stops49h 04mMultiple Airlines

Deal found 24/8$954

Wed 8/1016:40SYD - ORD

1 stop32h 05mEtihad Airways

Deal found 25/8$966

Tue 9/920:45BNE - ORD

3 stops54h 14mMultiple Airlines

Deal found 23/8$969

Fri 12/914:50PER - ORD

3 stops58h 09mMultiple Airlines

Deal found 25/8$985

Fly from

Fly to

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 25/11

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Tue 9/12

13:35-09:35

2 stops27h 00m

$1,220

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 25/11

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Sat 13/12

09:00-06:55

2 stops28h 55m

$1,248

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 27/11

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Sat 13/12

13:35-06:55

2 stops24h 20m

$1,248

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 25/11

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Sun 14/12

16:05-09:35

2 stops48h 30m

$1,251

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 27/11

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Sun 14/12

16:05-09:35

2 stops48h 30m

$1,251

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 28/11

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Sun 14/12

16:05-09:35

2 stops48h 30m

$1,251

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 8/10

10:30-16:32

2 stops22h 02m

Lambert-St Louis

Wed 15/10

13:40-08:30

2 stops26h 50m

$1,253

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 14/11

13:00-16:27

1 stop20h 27m

Lambert-St Louis

Thu 20/11

13:35-09:30

2 stops50h 55m

$1,274

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 12/1

13:00-13:16

2 stops41h 16m

Lambert-St Louis

Wed 21/1

06:00-09:30

2 stops34h 30m

$1,274

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 12/1

13:00-16:43

2 stops44h 43m

Lambert-St Louis

Fri 23/1

14:45-10:00

2 stops26h 15m

$1,274

Flights are sorted by cheapest return flights first.

Deals found on 24/8

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.

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

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Air New Zealand

8.0

Very Good

505 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Qantas Airways

7.5

Good

904 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

United Airlines

7.4

Good

8,940 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

American Airlines

7.2

Good

10,000 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Air Canada

7.1

Good

10,000 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Related info for your journey

How long is the flight from Australia to Illinois?
Airlines like Air Canada, United Airlines, and Alaska Airlines fly from Australia to Illinois in about 22h 02m. The time it takes to get you to your destination can typically vary by up to 23h 07m. There are 15255 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 American Airlines, which is currently one of the cheapest options available, starting at $760. United Airlines flights start at $763 while deals on Etihad Airways start at $966 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
Qantas Airways	Cheapest$980	Average$1,664	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Air New Zealand	Cheapest$1,183	Average$1,682	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
American Airlines	Cheapest$1,190	Average$1,671	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest$1,274	Average$1,875	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,375	Average$2,235	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Cathay Pacific	Cheapest$1,499	Average$2,091	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
ANA	Cheapest$1,619	Average$1,807	FlexibilityNo cancel fee	On-time80%	Search ANA flights
Virgin Australia	Cheapest$1,775	Average$2,859	FlexibilityNo cancel fee	On-time80%	Search Virgin Australia flights
Japan Airlines	Cheapest$2,024	Average$2,376	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights
Qatar Airways	Cheapest$2,515	Average$2,785	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 $753

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 15/10. 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 25 August 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 25 August 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 25 August 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 25 August 2025.

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?

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 25 August 2025.