How long is the flight from Australia to Illinois?

Airlines like Air Canada, American Airlines, and Cathay Pacific fly from Australia to Illinois in about 30h 01m. The time it takes to get you to your destination can typically vary by up to 12h 24m. 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 Qantas Airways, which is currently one of the cheapest options available, starting at $507. Air New Zealand flights start at $635 while deals on United Airlines start at $1,028 one-way.

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).

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.

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.

$183+ Cheap Flights from Australia to Illinois

Cheap flight deals from Australia to Illinois

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 17 September 2026.

Mon 5/1010:20 -

1 stop25h 46m

Mon 19/1015:40 -

1 stop24h 40m

Deal found 13/9$1,307

Tue 13/1010:00 -

2 stops36h 51m

Tue 20/1008:49 -

1 stop31h 16m

Deal found 13/9$1,321

Tue 27/1010:20 -

1 stop20h 17m

Thu 12/1115:30 -

1 stop25h 05m

Deal found 13/9$1,328

Wed 28/1009:45 -

1 stop25h 16m

Wed 4/1108:40 -

2 stops32h 05m

Deal found 13/9$1,346

Thu 22/1010:20 -

1 stop22h 25m

Mon 26/1015:30 -

1 stop25h 05m

Deal found 14/9$1,364

Mon 12/1010:20 -

1 stop20h 23m

Mon 19/1015:40 -

1 stop24h 40m

Deal found 13/9$1,366

Mon 19/1010:20 -

2 stops38h 40m

Wed 28/1007:05 -

2 stops33h 30m

Deal found 14/9$1,370

Thu 5/1110:45 -

1 stop19h 52m

Mon 9/1112:50 -

2 stops27h 55m

Deal found 13/9$1,460

Thu 29/1006:30 -

2 stops24h 07m

Thu 5/1115:30 -

2 stops48h 50m

Deal found 14/9$1,488

Tue 17/1107:10 -

2 stops24h 27m

Tue 2/215:35 -

2 stops30h 00m

Deal found 13/9$1,503

Wed 28/1006:30 -

2 stops24h 07m

Wed 4/1115:30 -

2 stops30h 05m

Deal found 13/9$1,509

Sun 11/1007:10 -

2 stops28h 56m

Sun 18/1015:40 -

2 stops28h 40m

Deal found 13/9$1,525

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 17 September 2026.

Tue 13/1010:00 -

2 stops36h 51m

Tue 20/1008:49 -

1 stop31h 16m

Deal found 13/9$1,321

Mon 2/1114:00 -

3 stops32h 13m

Mon 9/1106:30 -

3 stops37h 05m

Deal found 17/9$1,370

Thu 5/1112:15 -

1 stop40h 15m

Mon 9/1114:10 -

1 stop28h 35m

Deal found 14/9$1,661

Fri 16/1009:45 -

1 stop30h 01m

Fri 23/1019:10 -

1 stop41h 50m

Deal found 17/9$1,790

Mon 9/1108:35 -

1 stop22h 20m

Mon 23/1122:45 -

1 stop42h 35m

Deal found 15/9$1,814

Wed 20/111:50 -

2 stops23h 48m

Sat 13/216:17 -

2 stops23h 48m

Deal found 16/9$1,820

Sat 31/1009:55 -

2 stops26h 42m

Sat 7/1114:30 -

2 stops25h 05m

Deal found 15/9$2,007

Sat 31/1021:35 -

2 stops38h 45m

Sat 7/1121:15 -

2 stops53h 10m

Deal found 16/9$2,072

Wed 28/1022:45 -

2 stops35h 28m

Wed 4/1118:50 -

1 stop33h 55m

Deal found 13/9$2,114

Wed 9/1210:40 -

2 stops29h 46m

Sat 2/111:15 -

2 stops28h 15m

Deal found 12/9$2,195

Tue 15/1208:00 -

2 stops29h 42m

Mon 4/118:56 -

1 stop41h 04m

Deal found 13/9$2,581

Wed 28/1009:45 -

1 stop25h 16m

Wed 4/1108:49 -

1 stop31h 56m

Deal found 13/9$1,347

Mon 9/1122:55 -

2 stops49h 05m

Mon 23/1113:30 -

2 stops44h 25m

Deal found 15/9$2,806

Sun 7/218:55 -

2 stops35h 37m

Sun 14/215:35 -

1 stop25h 10m

Deal found 14/9$1,468

Mon 9/1121:55 -

2 stops35h 01m

Mon 23/1117:52 -

2 stops36h 18m

Deal found 15/9$3,022

Thu 5/1110:45 -

1 stop19h 52m

Mon 9/1108:49 -

1 stop31h 56m

Deal found 13/9$1,481

Tue 23/200:50 -

1 stop27h 40m

Sun 7/314:10 -

1 stop41h 10m

Deal found 16/9$1,664

Sun 15/1111:20 -

2 stops45h 06m

Sun 29/1116:05 -

2 stops48h 30m

Deal found 13/9$1,541

Sun 21/212:15 -

1 stop40h 15m

Sat 6/314:10 -

1 stop28h 35m

Deal found 16/9$1,713

Wed 20/114:05 -

1 stop19h 23m

Sat 13/214:54 -

2 stops25h 06m

Deal found 12/9$1,721

Thu 12/1108:00 -

3 stops28h 58m

Sat 21/1115:30 -

2 stops29h 45m

Deal found 13/9$1,595

Sun 15/1112:10 -

2 stops26h 30m

Wed 25/1114:30 -

2 stops25h 25m

Deal found 15/9$2,138

Mon 2/1111:05 -

1 stop42h 25m

Mon 9/1114:10 -

1 stop26h 25m

Deal found 17/9$1,799

Fri 16/1010:30 -

2 stops22h 31m

Fri 23/1011:35 -

2 stops28h 55m

Deal found 17/9$1,830

Tue 20/1022:45 -

2 stops47h 20m

Sat 24/1019:20 -

1 stop34h 25m

Deal found 14/9$2,218

Thu 5/1121:35 -

2 stops54h 25m

Mon 9/1120:15 -

2 stops54h 10m

Deal found 14/9$2,277

Wed 21/1010:20 -

2 stops29h 24m

Sat 24/1008:00 -

3 stops32h 35m

Deal found 12/9$1,615

Tue 23/212:15 -

1 stop40h 15m

Thu 11/314:10 -

2 stops74h 05m

Deal found 16/9$1,809

Sun 11/1018:55 -

2 stops34h 48m

Sun 18/1008:49 -

2 stops41h 36m

Deal found 13/9$1,840

Tue 1/1209:20 -

1 stop29h 17m

Tue 26/116:00 -

1 stop21h 20m

Deal found 14/9$2,464

Find flight deals from Australia to Illinois

Round-trip from	$1,307
One-way from	$183
Popular in	May
Cheapest in	October
Average price	$1,775

Air Canada
5/10-19/10
2 total stops
50h 26m total
Australia to Illinois

Search Deals

Qantas Airways
22/10-31/12
1 total stop
22h 41m total
Australia to Illinois

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($217 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($69 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

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

Cheapest return flight

PerthChicago

PER Perth - ORD Chicago O'Hare Intl

PERORD

Perth

Tue 6/10

10:30-05:59

2 stops32h 29m

Chicago O'Hare Intl

Wed 31/12

00:00-14:00

Nonstop0h 00m

$190

PerthChicago

PER Perth - ORD Chicago O'Hare Intl

PERORD

Perth

Wed 23/9

06:25-20:30

2 stops27h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-14:00

Nonstop0h 00m

$240

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 18/1

16:50-07:55

1 stop32h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,001

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Mon 15/2

12:15-12:30

1 stop40h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,025

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sat 7/11

21:30-07:55

1 stop51h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,035

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Mon 28/9

00:05-13:55

1 stop28h 50m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,039

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Tue 9/2

17:10-14:30

1 stop38h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,056

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Thu 22/10

00:05-13:55

1 stop28h 50m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,060

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 18/11

17:10-14:30

1 stop38h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,063

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 18/11

23:40-14:30

1 stop31h 50m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,094

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

PER-ORD

SYD-ORD

BNE-ORD

MEL-ORD

MEL-STL

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

AU0-USIL

PER-ORD

SYD-ORD

BNE-ORD

MEL-ORD

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 $1,581). Flying from Australia to Illinois in September is currently the most expensive (average of $1,973). 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.

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

The price you pay for your flight from Australia to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 35 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Air New Zealand

8.0

Very Good

669 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Qantas Airways

7.5

Good

1,099 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

United Airlines

7.4

Good

10,214 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

American Airlines

7.1

Good

12,076 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Air Canada

7.1

Good

11,640 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Related info for your journey

How long is the flight from Australia to Illinois?
Airlines like Air Canada, American Airlines, and Cathay Pacific fly from Australia to Illinois in about 30h 01m. The time it takes to get you to your destination can typically vary by up to 12h 24m. 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 Qantas Airways, which is currently one of the cheapest options available, starting at $507. Air New Zealand flights start at $635 while deals on United Airlines start at $1,028 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 $1,581). Flying from Australia to Illinois in September is currently the most expensive (average of $1,973). 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

Airlines

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Complete your trip

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Popular flights

Return Flight Options

Top destinations

Airlines flying to Illinois

American Airlines flights to Illinois

Air Canada flights to Illinois

Qantas Airways flights to Illinois

Air New Zealand flights to Illinois

United Airlines flights to Illinois

Top 8 airlines flying from Australia to Illinois

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$540	Average$1,600	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest$941	Average$1,659	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,279	Average$1,938	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Qantas Airways	Cheapest$1,307	Average$2,048	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Air New Zealand	Cheapest$1,322	Average$1,563	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
Cathay Pacific	Cheapest$1,673	Average$1,959	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Japan Airlines	Cheapest$2,099	Average$2,873	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights
Virgin Australia	Cheapest$2,136	Average$2,163	FlexibilityNo cancel fee	On-time80%	Search Virgin Australia flights

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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 $183

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Australia to Illinois

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 17 September 2026.

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 17 September 2026.

Best flights from Australia to IllinoisDiscover 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 17 September 2026.

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 17 September 2026.

Last-minute flights from Australia to IllinoisDiscover last-minute flight deals from Australia to Illinois. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Australia to Illinois. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Australia to IllinoisSearch for one-way flight options from Australia to Illinois. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Australia to Illinois. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Find flight deals from Australia to Illinois

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

What is the cheapest month to book a flight from Australia to Illinois?

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

The price you pay for your flight from Australia to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 35 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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.

Airlines flying to Illinois

Alternative routes for Australia to Illinois

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

Complete your trip

Complete your trip to Illinois by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Australia to Illinois by cabin class

Find flights from Australia to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Australia and Illinois flights

Browse other Australia and Illinois flight options. Last updated on 17 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from Illinois

Find the right flight back to Australia after your stay in Illinois

Australia to Illinois flights

Consider these flights travelling from Australia to Illinois.

Top 8 airlines flying from Australia to Illinois

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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 17 September 2026.

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 17 September 2026.

Last-minute flights from Australia to Illinois
Discover last-minute flight deals from Australia to Illinois. Data last updated 17 September 2026 and is based on user searches.

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 17 September 2026.