How long is the flight from Australia to Illinois?

Airlines like Delta, Air Canada, and Lufthansa fly from Australia to Illinois in about 23h 01m. The time it takes to get you to your destination can typically vary by up to 4h 13m. 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 $649. United Airlines flights start at $1,050 while deals on Qantas Airways start at $1,069 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.

$622+ 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 4 October 2026.

Thu 5/1111:10 -

1 stop23h 49m

Mon 9/1110:32 -

1 stop29h 28m

Deal found 1/10$1,056

Tue 10/1111:10 -

1 stop21h 55m

Mon 23/1112:57 -

2 stops27h 03m

Deal found 30/9$1,060

Mon 5/1010:15 -

2 stops22h 44m

Mon 19/1013:25 -

2 stops26h 25m

Deal found 2/10$1,063

Mon 9/1111:10 -

1 stop22h 50m

Wed 25/1118:45 -

1 stop21h 15m

Deal found 30/9$1,065

Wed 11/1110:40 -

2 stops27h 53m

Mon 30/1118:23 -

1 stop21h 07m

Deal found 4/10$1,066

Mon 5/1010:10 -

1 stop24h 28m

Mon 19/1012:00 -

1 stop28h 05m

Deal found 30/9$1,081

Wed 14/1010:10 -

1 stop22h 41m

Thu 29/1017:53 -

1 stop23h 07m

Deal found 2/10$1,127

Sat 7/1111:10 -

1 stop22h 46m

Tue 24/1118:45 -

1 stop21h 15m

Deal found 30/9$1,131

Sat 7/1111:10 -

1 stop23h 49m

Wed 25/1117:09 -

1 stop22h 51m

Deal found 30/9$1,135

Thu 8/1010:15 -

1 stop29h 32m

Thu 15/1007:20 -

1 stop32h 30m

Deal found 4/10$1,137

Wed 7/1010:10 -

1 stop21h 49m

Thu 12/1111:45 -

1 stop28h 15m

Deal found 2/10$1,144

Thu 22/1010:00 -

2 stops21h 35m

Sat 7/1117:54 -

2 stops46h 51m

Deal found 30/9$1,356

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 4 October 2026.

Fri 23/1010:15 -

2 stops26h 23m

Sat 7/1116:30 -

1 stop23h 00m

Deal found 3/10$1,204

Thu 3/1206:05 -

2 stops24h 32m

Mon 7/1213:55 -

2 stops26h 50m

Deal found 2/10$1,438

Sun 15/1112:45 -

2 stops27h 14m

Sun 22/1110:40 -

2 stops30h 50m

Deal found 30/9$1,608

Thu 29/1018:50 -

2 stops36h 40m

Thu 12/1118:50 -

1 stop35h 30m

Deal found 2/10$1,996

Mon 26/1023:40 -

1 stop31h 50m

Sun 8/1118:50 -

1 stop35h 30m

Deal found 2/10$1,996

Thu 5/1107:50 -

2 stops45h 10m

Mon 9/1114:10 -

1 stop27h 50m

Deal found 29/9$2,056

Tue 20/1022:05 -

2 stops36h 10m

Wed 4/1121:15 -

2 stops53h 10m

Deal found 30/9$2,085

Thu 5/1118:30 -

2 stops35h 31m

Mon 9/1121:06 -

2 stops48h 44m

Deal found 2/10$2,230

Wed 18/1118:50 -

2 stops39h 05m

Wed 25/1114:30 -

2 stops36h 20m

Deal found 3/10$2,273

Fri 23/1010:15 -

2 stops26h 15m

Thu 29/1015:30 -

2 stops23h 50m

Deal found 3/10$1,207

Thu 12/1108:05 -

2 stops26h 54m

Thu 19/1115:51 -

2 stops29h 39m

Deal found 29/9$2,519

Wed 11/1110:30 -

2 stops59h 00m

Sun 15/1113:30 -

2 stops44h 25m

Deal found 2/10$2,574

Thu 5/1110:45 -

1 stop25h 14m

Mon 9/1107:05 -

2 stops33h 40m

Deal found 1/10$1,441

Tue 19/110:45 -

2 stops40h 22m

Tue 26/117:45 -

2 stops47h 00m

Deal found 30/9$1,456

Sat 31/1009:45 -

1 stop19h 52m

Thu 21/107:05 -

2 stops33h 40m

Deal found 2/10$1,500

Thu 5/1122:40 -

1 stop32h 45m

Mon 9/1119:45 -

1 stop32h 35m

Deal found 1/10$3,838

Tue 20/1011:10 -

1 stop42h 45m

Wed 4/1114:10 -

2 stops39h 20m

Deal found 30/9$2,002

Sun 15/1110:45 -

1 stop19h 52m

Sun 22/1107:05 -

2 stops33h 40m

Deal found 1/10$1,520

Fri 30/1021:35 -

2 stops54h 25m

Sat 7/1121:15 -

2 stops53h 10m

Deal found 30/9$2,101

Thu 10/1217:10 -

1 stop38h 20m

Mon 11/118:50 -

1 stop41h 55m

Deal found 3/10$2,105

Thu 5/1115:15 -

1 stop38h 15m

Mon 9/1114:10 -

1 stop37h 40m

Deal found 3/10$2,184

Fri 30/1015:15 -

1 stop38h 15m

Sat 7/1114:10 -

2 stops35h 20m

Deal found 30/9$2,052

Thu 29/1023:50 -

2 stops33h 47m

Thu 5/1114:30 -

2 stops41h 50m

Deal found 1/10$2,348

Thu 5/1115:30 -

1 stop38h 00m

Mon 9/1114:10 -

1 stop48h 00m

Deal found 2/10$2,267

Sun 15/1112:00 -

1 stop21h 43m

Sun 22/1111:33 -

1 stop24h 27m

Deal found 30/9$2,494

Sun 8/1121:35 -

2 stops37h 45m

Wed 25/1120:15 -

2 stops54h 10m

Deal found 30/9$2,318

Sat 14/1107:05 -

3 stops34h 16m

Sat 21/1105:19 -

3 stops42h 46m

Deal found 30/9$2,161

Wed 9/1210:10 -

2 stops27h 43m

Mon 11/113:55 -

2 stops25h 05m

Deal found 3/10$2,444

Fri 13/1115:50 -

1 stop39h 40m

Wed 25/1118:50 -

2 stops56h 35m

Deal found 30/9$2,526

Thu 5/1113:50 -

2 stops38h 40m

Mon 9/1114:10 -

2 stops34h 40m

Deal found 1/10$2,407

Find flight deals from Australia to Illinois

Round-trip from	$1,056
One-way from	$622
Popular in	May
Cheapest in	October
Average price	$1,483

American Airlines
5/11-9/11
2 total stops
53h 17m total
Australia to Illinois

Search Deals

Delta
26/11-31/12
2 total stops
29h 40m total
Australia to Illinois

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($235 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($72 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 30/11

11:10-12:20

1 stop42h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$644

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sun 14/2

10:40-21:53

2 stops28h 13m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$707

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

$707

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Fri 16/10

15:40-08:35

1 stop32h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$990

PerthChicago

PER Perth - ORD Chicago O'Hare Intl

PERORD

Perth

Sat 14/11

10:35-07:55

3 stops59h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-14:00

Nonstop0h 00m

$1,062

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

$1,062

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Fri 13/11

11:15-22:00

2 stops26h 45m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,096

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Sun 18/10

23:45-15:25

1 stop31h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,111

MelbourneChicago

MEL Melbourne - ORD Chicago O'Hare Intl

MELORD

Melbourne

Thu 22/10

23:45-15:25

1 stop31h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,111

BrisbaneChicago

BNE Brisbane - ORD Chicago O'Hare Intl

BNEORD

Brisbane

Fri 13/11

07:00-12:30

2 stops45h 30m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,190

Flights are sorted by cheapest return flights first.

Deals found on 29/9

Showing 1-10 of 56 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

BNE-ORD

MEL-MLI

MEL-ORD

ADL-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

BNE-ORD

MEL-MLI

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 $1,638). Flying from Australia to Illinois in September is currently the most expensive (average of $2,059). 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

1,103 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

10,281 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

11,718 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

7.0

Good

12,132 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 Delta, Air Canada, and Lufthansa fly from Australia to Illinois in about 23h 01m. The time it takes to get you to your destination can typically vary by up to 4h 13m. 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 $649. United Airlines flights start at $1,050 while deals on Qantas Airways start at $1,069 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 $1,638). Flying from Australia to Illinois in September is currently the most expensive (average of $2,059). 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

Direct flights to United States

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Popular flights

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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$552	Average$1,612	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest$962	Average$1,695	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,307	Average$1,991	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Qantas Airways	Cheapest$1,335	Average$2,113	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Air New Zealand	Cheapest$1,394	Average$1,706	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
Cathay Pacific	Cheapest$1,709	Average$2,002	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Japan Airlines	Cheapest$2,145	Average$2,862	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights
Virgin Australia	Cheapest$2,182	Average$2,210	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 $622

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/11. 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 4 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 4 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 4 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 4 October 2026.

Last-minute flights from Australia to IllinoisDiscover last-minute flight deals from Australia to Illinois. Data last updated 4 October 2026 and is based on user searches.

Discover last-minute flight deals from Australia to Illinois. Data last updated 4 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 4 October 2026.

Search for one-way flight options from Australia to Illinois. Find affordable one-way fares based on user searches. Data last updated 4 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 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 4 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

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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 4 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 4 October 2026.

Last-minute flights from Australia to Illinois
Discover last-minute flight deals from Australia to Illinois. Data last updated 4 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 4 October 2026.