How long is the flight from Australia to Illinois?

Airlines like United Airlines, American Airlines, and Qatar Airways fly from Australia to Illinois in about 23h 35m. The time it takes to get you to your destination can typically vary by up to 19h 59m. There are 15546 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 $504. Air New Zealand flights start at $631 while deals on United Airlines start at $1,097 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.

$855+ 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 25 August 2026.

Thu 10/913:15 -

3 stops26h 30m

Fri 25/910:26 -

3 stops34h 24m

Deal found 20/8$1,317

Tue 17/1111:15 -

1 stop29h 30m

Tue 1/1208:29 -

1 stop29h 26m

Deal found 21/8$1,372

Fri 28/809:30 -

1 stop20h 06m

Thu 3/921:28 -

1 stop43h 47m

Deal found 23/8$1,372

Sun 27/921:25 -

1 stop22h 35m

Mon 28/908:23 -

1 stop31h 42m

Deal found 25/8$1,385

Fri 28/809:30 -

1 stop20h 06m

Fri 11/916:30 -

1 stop24h 45m

Deal found 23/8$1,392

Wed 4/1117:50 -

2 stops34h 47m

Wed 11/1115:30 -

2 stops35h 05m

Deal found 21/8$1,451

Tue 22/909:10 -

2 stops30h 13m

Tue 29/906:00 -

2 stops34h 05m

Deal found 23/8$1,468

Mon 19/1014:20 -

3 stops30h 56m

Fri 23/1006:30 -

3 stops37h 55m

Deal found 21/8$1,479

Thu 8/1010:10 -

2 stops29h 33m

Wed 21/1006:15 -

2 stops33h 50m

Deal found 23/8$1,483

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1015:20 -

1 stop23h 35m

Deal found 21/8$1,506

Fri 16/1014:20 -

3 stops30h 56m

Mon 26/1006:30 -

3 stops38h 15m

Deal found 22/8$1,507

Mon 12/1010:10 -

2 stops35h 06m

Sun 25/1006:30 -

2 stops34h 30m

Deal found 21/8$1,511

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 2026.

Fri 28/810:55 -

2 stops23h 35m

Fri 4/915:56 -

2 stops24h 34m

Deal found 20/8$1,358

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1015:20 -

1 stop23h 35m

Deal found 21/8$1,506

Fri 16/1017:10 -

1 stop37h 55m

Mon 26/1019:50 -

1 stop35h 30m

Deal found 22/8$1,786

Sat 14/1111:15 -

2 stops27h 47m

Wed 18/1114:00 -

2 stops25h 00m

Deal found 22/8$1,890

Fri 4/910:30 -

3 stops39h 20m

Fri 11/906:25 -

3 stops33h 05m

Deal found 24/8$1,899

Tue 17/1100:40 -

1 stop28h 15m

Mon 8/214:35 -

1 stop40h 35m

Deal found 23/8$1,929

Sat 12/922:15 -

1 stop37h 30m

Thu 24/900:30 -

1 stop28h 30m

Deal found 21/8$2,045

Thu 5/1121:35 -

2 stops38h 45m

Mon 9/1120:15 -

2 stops54h 10m

Deal found 24/8$2,268

Tue 8/915:50 -

2 stops35h 30m

Sat 12/916:00 -

2 stops44h 10m

Deal found 23/8$2,279

Wed 7/1011:00 -

2 stops27h 33m

Thu 15/1018:44 -

2 stops46h 06m

Deal found 25/8$2,337

Sun 4/1010:10 -

1 stop29h 20m

Sun 11/1006:04 -

2 stops36h 26m

Deal found 21/8$2,377

Wed 21/1010:20 -

2 stops22h 17m

Sat 24/1013:36 -

2 stops26h 59m

Deal found 24/8$2,529

Fri 28/809:30 -

1 stop20h 06m

Thu 3/921:28 -

1 stop43h 47m

Deal found 23/8$1,372

Wed 21/1009:45 -

1 stop35h 55m

Sun 25/1017:40 -

2 stops24h 40m

Deal found 24/8$1,877

Tue 17/1100:40 -

1 stop28h 15m

Thu 18/214:35 -

2 stops36h 15m

Deal found 21/8$1,913

Tue 13/1011:20 -

2 stops21h 17m

Thu 5/1113:08 -

2 stops27h 12m

Deal found 20/8$1,799

Sun 4/1012:20 -

1 stop40h 35m

Sun 11/1016:15 -

2 stops32h 25m

Deal found 20/8$2,018

Sun 15/1123:40 -

1 stop31h 50m

Wed 25/1115:16 -

2 stops33h 34m

Deal found 21/8$2,024

Tue 17/1100:40 -

1 stop28h 15m

Mon 15/214:35 -

2 stops36h 15m

Deal found 22/8$1,913

Sat 21/1111:20 -

2 stops22h 37m

Sat 28/1121:48 -

2 stops40h 12m

Deal found 20/8$1,799

Tue 3/1121:35 -

2 stops54h 25m

Mon 9/1120:15 -

2 stops54h 10m

Deal found 24/8$2,268

Mon 12/1006:00 -

2 stops46h 55m

Thu 22/1016:15 -

2 stops47h 25m

Deal found 23/8$2,101

Wed 21/1023:45 -

1 stop31h 20m

Sun 25/1019:50 -

1 stop35h 30m

Deal found 20/8$2,148

Sun 4/1011:55 -

1 stop22h 48m

Wed 14/1010:27 -

2 stops30h 03m

Deal found 21/8$1,799

Tue 17/1100:40 -

1 stop28h 15m

Mon 8/214:35 -

2 stops34h 25m

Deal found 20/8$1,983

Wed 2/1210:40 -

2 stops29h 16m

Sun 10/113:00 -

2 stops26h 30m

Deal found 21/8$2,432

Sun 4/1010:10 -

1 stop29h 20m

Sun 11/1006:04 -

1 stop34h 01m

Deal found 20/8$2,363

Thu 5/1115:15 -

1 stop38h 40m

Mon 9/1114:35 -

1 stop37h 15m

Deal found 21/8$2,154

Thu 8/1009:45 -

2 stops29h 58m

Thu 15/1006:15 -

2 stops32h 30m

Deal found 24/8$1,993

Thu 8/1006:10 -

2 stops24h 03m

Thu 15/1014:15 -

3 stops34h 10m

Deal found 24/8$2,662

Find flight deals from Australia to Illinois

Round-trip from	$1,317
One-way from	$855
Popular in	May
Cheapest in	October
Average price	$1,680

10/9-25/9
6 total stops
60h 54m total
Australia to Illinois

Search Deals

Delta
2/11
2 total stops
27h 59m total
Australia to Illinois

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($312 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($76 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Fri 28/8

10:55-19:30

2 stops23h 35m

Chicago O'Hare Intl

Fri 4/9

15:56-07:30

2 stops24h 34m

$1,358

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Fri 28/8

09:30-14:36

1 stop20h 06m

Chicago O'Hare Intl

Thu 3/9

21:28-08:15

1 stop43h 47m

$1,372

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-13:44

2 stops43h 34m

Lambert-St Louis

Sat 24/10

15:20-06:55

1 stop23h 35m

$1,506

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Fri 16/10

17:10-15:05

1 stop37h 55m

Chicago O'Hare Intl

Mon 26/10

19:50-23:20

1 stop35h 30m

$1,786

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 13/10

11:20-16:37

2 stops21h 17m

Lambert-St Louis

Thu 5/11

13:08-09:20

2 stops27h 12m

$1,799

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sat 21/11

11:20-16:57

2 stops22h 37m

Lambert-St Louis

Sat 28/11

21:48-07:00

2 stops40h 12m

$1,799

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Sun 4/10

11:55-18:43

1 stop22h 48m

Lambert-St Louis

Wed 14/10

10:27-08:30

2 stops30h 03m

$1,799

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Wed 21/10

09:45-05:40

1 stop35h 55m

Chicago O'Hare Intl

Sun 25/10

17:40-10:20

2 stops24h 40m

$1,877

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Sat 14/11

11:15-23:02

2 stops27h 47m

Chicago O'Hare Intl

Wed 18/11

14:00-07:00

2 stops25h 00m

$1,890

BrisbaneChicago

BNE Brisbane - MDW Chicago Midway

BNEMDW

Brisbane

Fri 4/9

10:30-10:50

3 stops39h 20m

Chicago Midway

Fri 11/9

06:25-06:30

3 stops33h 05m

$1,899

Flights are sorted by cheapest return flights first.

Deals found on 20/8

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

BNE-ORD

SYD-STL

BNE-MDW

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

BNE-ORD

SYD-STL

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 $1,588). Flying from Australia to Illinois in July is currently the most expensive (average of $1,926). 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 34 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

664 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.

Air New Zealand

8.0

Very Good

664 reviews

Air New Zealand

8.0

Very Good

664 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.

Qantas Airways

7.5

Good

1,085 reviews

Air New Zealand

8.0

Very Good

664 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.

United Airlines

7.4

Good

10,120 reviews

Air New Zealand

8.0

Very Good

664 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.

American Airlines

7.1

Good

11,991 reviews

Air New Zealand

8.0

Very Good

664 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.

Air Canada

7.1

Good

11,530 reviews

Air New Zealand

8.0

Very Good

664 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.

Related info for your journey

How long is the flight from Australia to Illinois?
Airlines like United Airlines, American Airlines, and Qatar Airways fly from Australia to Illinois in about 23h 35m. The time it takes to get you to your destination can typically vary by up to 19h 59m. There are 15546 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 $504. Air New Zealand flights start at $631 while deals on United Airlines start at $1,097 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 $1,588). Flying from Australia to Illinois in July is currently the most expensive (average of $1,926). 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$583	Average$1,576	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest$1,058	Average$1,674	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,226	Average$1,790	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Qantas Airways	Cheapest$1,236	Average$2,028	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Air New Zealand	Cheapest$1,313	Average$1,502	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
Japan Airlines	Cheapest$1,362	Average$2,782	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights
Cathay Pacific	Cheapest$1,662	Average$1,946	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Virgin Australia	Cheapest$2,121	Average$2,148	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 $855

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 2/11. 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 25 August 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 25 August 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 25 August 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 25 August 2026.

Last-minute flights from Australia to IllinoisDiscover last-minute flight deals from Australia to Illinois. Data last updated 25 August 2026 and is based on user searches.

Discover last-minute flight deals from Australia to Illinois. Data last updated 25 August 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 25 August 2026.

Search for one-way flight options from Australia to Illinois. Find affordable one-way fares based on user searches. Data last updated 25 August 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 34 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 25 August 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 25 August 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 25 August 2026.

Last-minute flights from Australia to Illinois
Discover last-minute flight deals from Australia to Illinois. Data last updated 25 August 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 25 August 2026.