What is the cheapest airline that flies from Illinois to Sydney Kingsford Smith?

Etihad Airways, United Airlines, and Qantas Airways are the most popular carriers operating from Illinois to Sydney Kingsford Smith

How long does it take to fly to Sydney?

Flight times from Illinois to Sydney vary, but if you’re flying out of Chicago and flying into Sydney (one of the most popular routes), then the duration is 23h 40m on average. Another popular route from Illinois to Sydney is flying from Peoria to Sydney, which will take roughly 29h 37m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Sydney?

Qantas Airways, Air Canada and American Airlines are the top three most popular airlines that fly to Sydney from Illinois according to our data. Qantas Airways is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 9 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Illinois to Sydney Kingsford Smith Airport?

Prices for flights from Illinois to Sydney Kingsford Smith Airport are updated daily.

How many operators does momondo search for flights from Illinois to Sydney Kingsford Smith Airport?

There are 9 operators available for flights from Illinois to Sydney Kingsford Smith Airport as of August 2026.

How old do you have to be to fly from Illinois to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$567 Cheap Flights from Illinois to Sydney in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Sydney

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One-way

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Enter your travel dates to find the best prices.

2:10 pm - 8:35 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 25m2 stops Los Angeles Los Angeles Auckland Intl

2:05 pm - 8:22 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 17m2 stops Auckland Intl Los Angeles Los Angeles

$1,224Air New Zealand

Wed, Feb 10 - Wed, Feb 17

2:10 pm - 8:35 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 25m2 stops Los Angeles Los Angeles Auckland Intl

11:50 am - 7:14 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

24h 24m2 stops Auckland Intl Houston George Bush Intcntl

$1,224Air New Zealand

Tue, Jan 26 - Tue, Feb 9

6:30 am - 7:30 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 00m2 stops Denver Intl Los Angeles Los Angeles

11:10 am - 12:24 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

29h 14m2 stops Los Angeles Los Angeles Denver Intl

$1,240Multiple Airlines

Mon, Oct 19 - Mon, Oct 26

6:30 am - 7:05 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 35m2 stops Denver Intl Los Angeles Los Angeles

10:10 am - 12:24 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 14m2 stops Los Angeles Los Angeles Denver Intl

$1,243Multiple Airlines

Wed, Sep 16 - Wed, Oct 14

3:40 pm - 7:20 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 40m1 stop Vancouver Intl

9:20 am - 2:43 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 23m1 stop Vancouver Intl

$1,248Air Canada

Sun, Aug 30 - Tue, Sep 15

3:40 pm - 7:20 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 40m1 stop Vancouver Intl

9:20 am - 2:43 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

20h 23m1 stop Vancouver Intl

$1,251Air Canada

Wed, Sep 23 - Wed, Sep 30

4:25 pm - 8:15 pmORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 50m1 stop Tokyo Haneda

12:25 pm - 5:20 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

33h 55m2 stops Tokyo Haneda Los Angeles Los Angeles

$1,273ANA

Mon, Nov 9 - Mon, Nov 16

4:25 pm - 10:30 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 05m1 stop Tokyo Haneda

9:45 pm - 7:20 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 35m1 stop Tokyo Haneda

$1,275ANA

Sun, Nov 15 - Thu, Nov 26

5:00 pm - 6:55 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

22h 55m1 stop Dallas/Fort Worth

1:00 pm - 6:20 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

21h 20m1 stop Dallas/Fort Worth

$1,307Qantas Airways

Wed, Sep 23 - Wed, Oct 7

3:34 pm - 6:55 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 21m1 stop Dallas/Fort Worth

5:50 pm - 11:30 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

20h 40m1 stop Los Angeles Los Angeles

$1,307Qantas Airways

Tue, Sep 15 - Tue, Sep 22

Cheap last minute flights

Enter your travel dates to find the best prices.

3:00 pm - 8:45 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 45m2 stops Los Angeles Los Angeles Auckland Intl

7:20 pm - 9:45 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

41h 25m2 stops Auckland Intl San Francisco

$1,339Air New Zealand

Mon, Aug 24 - Mon, Sep 7

7:05 am - 7:30 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 25m2 stops Atlanta Hartsfield-Jackson Los Angeles Los Angeles

5:50 pm - 6:17 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

27h 27m1 stop Los Angeles Los Angeles

$1,375Multiple Airlines

Sun, Aug 23 - Mon, Aug 31

6:05 am - 7:30 amMDW Chicago Midway-SYD Sydney Kingsford Smith

34h 25m2 stops Atlanta Hartsfield-Jackson Los Angeles Los Angeles

5:50 pm - 10:55 amSYD Sydney Kingsford Smith-MDW Chicago Midway

32h 05m2 stops Los Angeles Los Angeles Atlanta Hartsfield-Jackson

$1,376Multiple Airlines

Sun, Aug 23 - Mon, Aug 31

8:50 am - 8:45 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

32h 55m2 stops Los Angeles Los Angeles Auckland Intl

9:30 am - 5:05 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 35m1 stop Los Angeles Los Angeles

$1,546Air New Zealand

Sun, Aug 23 - Sun, Sep 6

5:45 pm - 9:25 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 40m1 stop Tokyo Haneda

8:55 pm - 8:40 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 45m1 stop Tokyo Haneda

$1,556ANA

Sat, Aug 22 - Fri, Sep 4

8:50 am - 7:10 pmORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

43h 20m2 stops Los Angeles Los Angeles Tokyo Haneda

8:55 pm - 8:40 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 45m1 stop Tokyo Haneda

$1,560ANA

Sat, Aug 22 - Fri, Sep 4

3:22 pm - 7:05 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 43m1 stop Los Angeles Los Angeles

9:25 pm - 5:13 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 48m1 stop San Francisco

$1,608American Airlines

Fri, Aug 21 - Sun, Aug 23

5:16 pm - 7:05 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 49m1 stop Los Angeles Los Angeles

5:50 pm - 5:00 amSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

26h 10m1 stop Los Angeles Los Angeles

$1,608American Airlines

Mon, Aug 24 - Mon, Sep 7

6:48 pm - 6:50 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 02m1 stop Los Angeles Los Angeles

9:15 am - 11:48 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

29h 33m1 stop Los Angeles Los Angeles

$1,612Delta

Mon, Aug 24 - Mon, Aug 31

2:36 pm - 6:50 amORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 14m1 stop Los Angeles Los Angeles

9:15 am - 11:48 pmSYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

29h 33m1 stop Los Angeles Los Angeles

$1,612Delta

Sun, Aug 23 - Sun, Sep 6

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Air New Zealand flights from Illinois to Sydney

Our best Air New Zealand deals on Illinois to Sydney flight tickets

Air New Zealand

Feb 1

ORD2:10 pmChicago O'Hare Intl

27h 25m

2 stops

SYD10:35 amSydney Kingsford Smith

Mar 3

SYD9:55 amSydney Kingsford Smith

25h 59m

2 stops

ORD6:54 pmChicago O'Hare Intl

$1,224

Air New Zealand

Nov 9

ORD2:40 pmChicago O'Hare Intl

26h 55m

2 stops

SYD10:35 amSydney Kingsford Smith

Nov 16

SYD2:05 pmSydney Kingsford Smith

23h 32m

2 stops

ORD8:37 pmChicago O'Hare Intl

$1,225

Air New Zealand

Feb 1

ORD4:05 pmChicago O'Hare Intl

25h 30m

2 stops

SYD10:35 amSydney Kingsford Smith

Mar 3

SYD11:50 amSydney Kingsford Smith

24h 04m

2 stops

ORD6:54 pmChicago O'Hare Intl

$1,226

ANA flights from Illinois to Sydney

Our best ANA deals on Illinois to Sydney flight tickets

ANA

Nov 9

ORD4:25 pmChicago O'Hare Intl

34h 50m

1 stop

SYD8:15 pmSydney Kingsford Smith

Nov 16

SYD12:25 pmSydney Kingsford Smith

33h 55m

2 stops

ORD5:20 amChicago O'Hare Intl

$1,273

ANA

Nov 15

ORD4:25 pmChicago O'Hare Intl

25h 05m

1 stop

SYD10:30 amSydney Kingsford Smith

Nov 26

SYD9:45 pmSydney Kingsford Smith

26h 35m

1 stop

ORD7:20 amChicago O'Hare Intl

$1,275

ANA

Nov 7

ORD7:00 amChicago O'Hare Intl

44h 15m

2 stops

SYD8:15 pmSydney Kingsford Smith

Nov 13

SYD12:25 pmSydney Kingsford Smith

33h 55m

2 stops

ORD5:20 amChicago O'Hare Intl

$1,277

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 2/10

2:10 pm-8:35 am

2 stops25h 25m

Sydney Kingsford Smith

Wed 2/17

2:05 pm-8:22 pm

2 stops23h 17m

$1,224

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/26

2:10 pm-8:35 am

2 stops25h 25m

Sydney Kingsford Smith

Tue 2/9

11:50 am-7:14 pm

2 stops24h 24m

$1,224

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 10/19

6:30 am-7:30 am

2 stops33h 00m

Sydney Kingsford Smith

Mon 10/26

11:10 am-12:24 am

2 stops29h 14m

$1,240

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 9/16

6:30 am-7:05 am

2 stops33h 35m

Sydney Kingsford Smith

Wed 10/14

10:10 am-12:24 am

2 stops30h 14m

$1,243

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Sun 8/30

3:40 pm-7:20 am

1 stop24h 40m

Sydney Kingsford Smith

Tue 9/15

9:20 am-2:43 pm

1 stop20h 23m

$1,248

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 9/23

3:40 pm-7:20 am

1 stop24h 40m

Sydney Kingsford Smith

Wed 9/30

9:20 am-2:43 pm

1 stop20h 23m

$1,251

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 11/9

4:25 pm-8:15 pm

1 stop34h 50m

Sydney Kingsford Smith

Mon 11/16

12:25 pm-5:20 am

2 stops33h 55m

$1,273

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Sun 11/15

4:25 pm-10:30 am

1 stop25h 05m

Sydney Kingsford Smith

Thu 11/26

9:45 pm-7:20 am

1 stop26h 35m

$1,275

Quickest round-trip

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Wed 9/23

5:00 pm-6:55 am

1 stop22h 55m

Sydney Kingsford Smith

Wed 10/7

1:00 pm-6:20 pm

1 stop21h 20m

$1,307

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Tue 9/15

3:34 pm-6:55 am

1 stop24h 21m

Sydney Kingsford Smith

Tue 9/22

5:50 pm-11:30 pm

1 stop20h 40m

$1,307

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Sydney?

In general, June is the cheapest month to fly from Illinois to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,284. If you are unable to visit Sydney during the month of June, then departing from Illinois during the month February is also very affordable. Most momondo users find prices during this month for around $1,318.

How far in advance should I book a flight from Illinois to Sydney?

You are more likely to see cheaper flights to Sydney from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,432 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Illinois for as low as $1,099 on momondo.

Can stopping save me money on Illinois to Sydney flights?

You could potentially save up to 19% on your flight if you consider stops on a Illinois to Sydney flight.

Cheap Illinois to Sydney flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Sydney

Best Price Found	$567
Fastest flight time	22h 20m
Direct flights	None

The best one-way flight to Sydney from Illinois in the past 72 hours is $567. The best round-trip flight deal from Illinois to Sydney found on momondo in the last 72 hours is $1,224.

The fastest flight from Illinois to Sydney takes 22h 20m

There are no direct flights from Illinois to Sydney. There are no popular flight routes from Illinois to Sydney.

Search flight deals

Frequently asked questions about flying from Illinois to Sydney

When did momondo last update prices for flights from Illinois to Sydney Kingsford Smith Airport?
Prices for flights from Illinois to Sydney Kingsford Smith Airport are updated daily.
How many operators does momondo search for flights from Illinois to Sydney Kingsford Smith Airport?
There are 9 operators available for flights from Illinois to Sydney Kingsford Smith Airport as of August 2026.
How old do you have to be to fly from Illinois to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Sydney

Compare and see reviews for airlines that fly from Illinois to Sydney with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $261	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
Fiji Airways	PriceFrom $716	Free Cancellation	Rating 8.0 254 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $837	Free Cancellation	Rating 7.5 1,083 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $839	Free Cancellation	Rating 7.1 11,969 reviews	Search American Airlines flights
United Airlines	PriceFrom $870	Free Cancellation	Rating 7.4 10,101 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,009	Free Cancellation	Rating 7.1 11,507 reviews	Search Air Canada flights
ANA	PriceFrom $1,209	Free Cancellation	Rating 8.3 1,299 reviews	Search ANA flights
Air New Zealand	PriceFrom $1,294	Free Cancellation	Rating 8.0 663 reviews	Search Air New Zealand flights
Qatar Airways	PriceFrom $1,391	Free Cancellation	Rating 7.4 3,737 reviews	Search Qatar Airways flights

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Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Sydney for you.

Can I find flights from Illinois to Sydney with flexible booking policies on momondo?

All flight searches from Illinois to Sydney on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Illinois to Sydney?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Sydney.

I’m not ready to book a flight from Illinois to Sydney right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Illinois and alert you when they change.

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Cheap flights from Illinois to Sydney from $567

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Sydney departing on 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air New Zealand flights from Illinois to Sydney

Our best Air New Zealand deals on Illinois to Sydney flight tickets

ANA flights from Illinois to Sydney

Our best ANA deals on Illinois to Sydney flight tickets

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How to get the cheapest flight ticket from Illinois to Sydney

What is the cheapest month to fly to Sydney?

How far in advance should I book a flight from Illinois to Sydney?

Can stopping save me money on Illinois to Sydney flights?

What is the cheapest airline that flies from Illinois to Sydney Kingsford Smith?

What airlines fly to Sydney?

How long does it take to fly to Sydney?

Cheap Illinois to Sydney flight deals and tips

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Frequently asked questions about flying from Illinois to Sydney

Best airlines flying from Illinois to Sydney

Compare and see reviews for airlines that fly from Illinois to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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