How long is the flight from Australia to Illinois?

Airlines like American Airlines, Delta, and Philippine Airlines fly from Australia to Illinois in about 24h. The time it takes to get you to your destination can typically vary by up to 3h 52m. There are 14851 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 Air New Zealand, which is currently one of the cheapest options available, starting at $641. United Airlines flights start at $1,039 while deals on Qantas Airways start at $1,057 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.

$614+ 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 30 October 2026.

Mon 2/1111:10 -

1 stop29h 51m

Mon 16/1115:25 -

1 stop24h 35m

Deal found 28/10$1,039

Tue 17/1111:10 -

1 stop21h 55m

Wed 2/1213:30 -

1 stop26h 30m

Deal found 28/10$1,043

Thu 12/1111:10 -

1 stop35h 55m

Mon 16/1121:04 -

1 stop42h 56m

Deal found 29/10$1,044

Mon 2/1110:40 -

1 stop22h 05m

Sun 15/1115:47 -

2 stops23h 43m

Deal found 28/10$1,050

Mon 16/1111:10 -

2 stops27h 45m

Thu 3/1215:25 -

1 stop24h 35m

Deal found 29/10$1,115

Wed 18/1110:40 -

2 stops24h 25m

Thu 3/1214:41 -

2 stops24h 49m

Deal found 29/10$1,121

Mon 9/1108:35 -

1 stop22h 20m

Mon 23/1122:45 -

1 stop42h 35m

Deal found 28/10$1,482

Mon 9/1108:35 -

1 stop22h 20m

Wed 25/1122:45 -

1 stop42h 35m

Deal found 25/10$1,529

Tue 24/1111:25 -

2 stops34h 49m

Tue 1/1207:00 -

3 stops35h 15m

Deal found 27/10$1,558

Sun 15/1111:30 -

1 stop46h 25m

Mon 30/1122:45 -

1 stop42h 05m

Deal found 26/10$1,624

Wed 2/1209:20 -

1 stop24h 35m

Wed 2/1222:45 -

1 stop39h 45m

Deal found 28/10$1,676

Mon 2/1110:45 -

3 stops34h 28m

Sun 15/1106:30 -

3 stops34h 15m

Deal found 26/10$1,685

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 30 October 2026.

Thu 12/1111:10 -

2 stops24h 00m

Mon 16/1121:04 -

1 stop42h 56m

Deal found 29/10$1,044

Mon 2/1110:40 -

1 stop27h 52m

Sun 15/1109:59 -

2 stops29h 31m

Deal found 29/10$1,051

Fri 26/209:20 -

1 stop24h 35m

Mon 1/322:45 -

1 stop39h 45m

Deal found 25/10$1,668

Tue 17/1114:00 -

3 stops27h 21m

Wed 2/1207:00 -

2 stops30h 25m

Deal found 28/10$1,722

Thu 5/1122:20 -

1 stop31h 10m

Mon 9/1114:10 -

1 stop37h 40m

Deal found 26/10$1,838

Tue 17/1117:10 -

1 stop38h 20m

Tue 2/218:50 -

2 stops34h 30m

Deal found 30/10$2,140

Wed 18/1110:40 -

2 stops27h 53m

Thu 3/1218:10 -

1 stop21h 20m

Deal found 29/10$1,121

Fri 26/222:35 -

2 stops36h 45m

Mon 1/320:15 -

2 stops31h 30m

Deal found 29/10$2,303

Sat 21/1121:55 -

1 stop29h 55m

Sat 28/1110:30 -

1 stop43h 45m

Deal found 30/10$2,729

Sat 27/310:20 -

1 stop23h 30m

Sat 10/421:30 -

1 stop42h 00m

Deal found 29/10$2,745

Thu 24/1211:15 -

2 stops25h 18m

Tue 12/114:33 -

2 stops27h 27m

Deal found 30/10$2,851

Wed 11/1110:30 -

2 stops37h 30m

Sun 15/1113:30 -

2 stops44h 25m

Deal found 29/10$2,870

Thu 11/317:50 -

3 stops45h 27m

Sun 21/314:30 -

2 stops30h 00m

Deal found 27/10$2,885

Wed 9/1209:50 -

2 stops24h 09m

Wed 16/1218:02 -

2 stops27h 08m

Deal found 25/10$3,368

Sun 18/400:05 -

1 stop28h 50m

Mon 19/416:15 -

2 stops34h 55m

Deal found 27/10$1,843

Thu 11/306:25 -

2 stops46h 35m

Sun 21/315:10 -

2 stops33h 05m

Deal found 27/10$1,929

Mon 23/1122:40 -

1 stop33h 00m

Mon 30/1119:45 -

1 stop32h 35m

Deal found 26/10$3,961

Mon 22/210:10 -

2 stops66h 50m

Mon 8/314:10 -

1 stop27h 50m

Deal found 28/10$1,932

Wed 3/206:05 -

2 stops26h 47m

Sat 13/215:13 -

2 stops48h 47m

Deal found 25/10$1,935

Wed 9/1207:05 -

3 stops24h 32m

Wed 16/1213:57 -

3 stops30h 23m

Deal found 25/10$4,285

Wed 11/1109:10 -

2 stops46h 20m

Wed 18/1118:50 -

1 stop35h 30m

Deal found 26/10$2,236

Mon 16/1115:15 -

1 stop38h 15m

Thu 3/1214:10 -

1 stop29h 50m

Deal found 27/10$1,953

Mon 16/1114:00 -

3 stops27h 21m

Tue 1/1207:00 -

3 stops34h 30m

Deal found 27/10$1,956

Mon 19/418:55 -

2 stops34h 00m

Fri 23/416:15 -

2 stops35h 55m

Deal found 27/10$1,961

Tue 23/219:45 -

2 stops33h 15m

Wed 10/314:10 -

2 stops48h 25m

Deal found 28/10$2,030

Tue 2/216:50 -

3 stops44h 15m

Fri 5/318:20 -

2 stops29h 20m

Deal found 25/10$2,897

Tue 17/1117:10 -

1 stop38h 20m

Tue 2/218:50 -

1 stop35h 30m

Deal found 30/10$1,980

Mon 22/210:10 -

2 stops42h 50m

Tue 9/314:10 -

2 stops35h 05m

Deal found 28/10$2,030

Wed 23/1211:20 -

2 stops23h 37m

Thu 7/120:15 -

1 stop43h 15m

Deal found 26/10$3,189

Mon 16/1108:45 -

1 stop44h 45m

Thu 3/1214:10 -

2 stops33h 45m

Deal found 26/10$1,982

Find flight deals from Australia to Illinois

Round-trip from	$1,043
One-way from	$614
Popular in	May
Cheapest in	October
Average price	$1,540

American Airlines
17/11-2/12
2 total stops
48h 25m total
Australia to Illinois

Search Deals

Delta
9/11-31/12
2 total stops
24h 50m total
Australia to Illinois

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($210 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 October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 9/11

10:40-18:30

2 stops24h 50m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$614

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Fri 22/1

14:00-00:26

3 stops27h 26m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$651

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 28/1

14:00-00:26

3 stops27h 26m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$668

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sat 7/11

10:40-15:45

1 stop22h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$696

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 20/1

13:45-00:26

3 stops27h 41m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$715

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 18/11

13:45-00:21

3 stops27h 36m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$769

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 18/11

09:20-16:55

1 stop24h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$891

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 28/1

11:30-16:55

1 stop46h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$919

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Mon 23/11

06:40-06:14

3 stops40h 34m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$953

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Mon 29/3

08:00-17:55

1 stop25h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,007

Flights are sorted by cheapest return flights first.

Deals found on 29/10

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.

SYD-ORD

MEL-ORD

MEL-MLI

PER-ORD

CNS-ORD

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

SYD-ORD

MEL-ORD

MEL-MLI

PER-ORD

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

Currently, March is the cheapest month in which you can book a flight from Australia to Illinois (average of $1,630). Flying from Australia to Illinois in September is currently the most expensive (average of $2,111). 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 67 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

679 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

679 reviews

Air New Zealand

8.0

Very Good

679 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

1,121 reviews

Air New Zealand

8.0

Very Good

679 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

7.3

Good

10,451 reviews

Air New Zealand

8.0

Very Good

679 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

11,833 reviews

Air New Zealand

8.0

Very Good

679 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

7.0

Good

12,210 reviews

Air New Zealand

8.0

Very Good

679 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 American Airlines, Delta, and Philippine Airlines fly from Australia to Illinois in about 24h. The time it takes to get you to your destination can typically vary by up to 3h 52m. There are 14851 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 Air New Zealand, which is currently one of the cheapest options available, starting at $641. United Airlines flights start at $1,039 while deals on Qantas Airways start at $1,057 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, March is the cheapest month in which you can book a flight from Australia to Illinois (average of $1,630). Flying from Australia to Illinois in September is currently the most expensive (average of $2,111). 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

Alternative routes

Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

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$546	Average$1,517	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest$951	Average$1,676	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Delta	Cheapest$1,051	Average$1,823	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air New Zealand	Cheapest$1,221	Average$1,755	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
United Airlines	Cheapest$1,292	Average$1,970	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Qantas Airways	Cheapest$1,331	Average$2,114	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Cathay Pacific	Cheapest$1,690	Average$2,680	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Virgin Australia	Cheapest$2,158	Average$2,185	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 $614

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. 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 30 October 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from Australia to IllinoisDiscover last-minute flight deals from Australia to Illinois. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Australia to Illinois. Data last updated 30 October 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 30 October 2026.

Search for one-way flight options from Australia to Illinois. Find affordable one-way fares based on user searches. Data last updated 30 October 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 67 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 30 October 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

Fly with Cheapflights

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 30 October 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 30 October 2026.

Last-minute flights from Australia to Illinois
Discover last-minute flight deals from Australia to Illinois. Data last updated 30 October 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 30 October 2026.