Cheap flights from Chicago to Sydney from $571

1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Chicago to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air New Zealand Logo
2:33 pm - 10:35 amORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
27h 02m2 stops San Francisco Auckland Intl
Air New Zealand Logo
7:25 pm - 7:56 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
41h 31m2 stops Auckland Intl Houston George Bush Intcntl
$1,313Air New Zealand
Mon, Feb 8 - Mon, Feb 22
American Airlines Logo
1:38 pm - 6:25 amORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
24h 47m1 stop San Francisco
American Airlines Logo
9:10 am - 2:16 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
20h 06m1 stop Los Angeles
$1,314American Airlines
Fri, Mar 26 - Tue, Apr 6
American Airlines Logo
3:25 pm - 6:25 amORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
22h 00m1 stop Los Angeles
American Airlines Logo
11:20 am - 7:45 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
24h 25m1 stop Los Angeles
$1,314American Airlines
Fri, Mar 5 - Mon, Mar 15
Multiple Airlines Logo
5:40 am - 6:25 amORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
32h 45m1 stop Los Angeles
Multiple Airlines Logo
2:15 pm - 7:05 amSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
32h 50m2 stops Nadi Los Angeles
$1,314Multiple Airlines
Sun, Mar 14 - Thu, Apr 1
Multiple Airlines Logo
7:30 am - 6:25 amORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
29h 55m2 stops Las Vegas Harry Reid Intl Los Angeles
Multiple Airlines Logo
9:20 am - 10:57 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
30h 37m1 stop Houston George Bush Intcntl
$1,335Multiple Airlines
Fri, Feb 5 - Thu, Feb 18
Air New Zealand Logo
12:45 pm - 8:35 amORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
26h 50m2 stops Los Angeles Auckland Intl
Air New Zealand Logo
9:55 am - 10:59 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
30h 04m2 stops Auckland Intl Houston George Bush Intcntl
$1,337Air New Zealand
Wed, Feb 3 - Sun, Feb 21
Qantas Airways Logo
9:05 pm - 6:25 amORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
40h 20m1 stop Los Angeles
Qantas Airways Logo
7:15 pm - 4:15 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
38h 00m2 stops Auckland Intl Los Angeles
$1,339Qantas Airways
Fri, Dec 4 - Fri, Dec 11
Qatar Airways Logo
6:50 pm - 10:20 pmORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
34h 30m2 stops Doha Hamad Intl Adelaide
Qatar Airways Logo
3:50 pm - 2:30 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
39h 40m1 stop Doha Hamad Intl
$1,407Qatar Airways
Mon, Jan 25 - Tue, Feb 2
Qatar Airways Logo
7:20 pm - 5:05 pmORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
30h 45m1 stop Doha Hamad Intl
Qatar Airways Logo
7:00 pm - 3:05 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
35h 05m2 stops Brisbane Doha Hamad Intl
$1,408Qatar Airways
Tue, Apr 27 - Wed, May 5
Qantas Airways Logo
6:45 pm - 9:00 amORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
21h 15m1 stop Los Angeles
Qantas Airways Logo
8:55 am - 3:59 pmSYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
24h 04m2 stops Auckland Intl Los Angeles
$1,415Qantas Airways
Tue, Dec 29 - Sat, Jan 23

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Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets
Qantas Airways
Dec 4
ORD9:05 pmChicago O'Hare Intl
40h 20m
1 stop
SYD6:25 amSydney Kingsford Smith
Dec 11
SYD7:15 pmSydney Kingsford Smith
38h 00m
2 stops
ORD4:15 pmChicago O'Hare Intl
$1,339
Qantas Airways
Nov 8
ORD6:45 pmChicago O'Hare Intl
21h 15m
1 stop
SYD9:00 amSydney Kingsford Smith
Nov 23
SYD11:10 amSydney Kingsford Smith
22h 32m
1 stop
ORD4:42 pmChicago O'Hare Intl
$1,623
Qantas Airways
Nov 17
ORD3:25 pmChicago O'Hare Intl
24h 35m
1 stop
SYD9:00 amSydney Kingsford Smith
Nov 30
SYD11:10 amSydney Kingsford Smith
23h 01m
1 stop
ORD5:11 pmChicago O'Hare Intl
$1,636

Air New Zealand flights from Chicago to Sydney

Our best Air New Zealand deals on Chicago to Sydney flight tickets
Air New Zealand
Feb 8
ORD2:33 pmChicago O'Hare Intl
27h 02m
2 stops
SYD10:35 amSydney Kingsford Smith
Feb 22
SYD7:25 pmSydney Kingsford Smith
41h 31m
2 stops
ORD7:56 pmChicago O'Hare Intl
$1,313
Air New Zealand
Feb 3
ORD12:45 pmChicago O'Hare Intl
26h 50m
2 stops
SYD8:35 amSydney Kingsford Smith
Feb 21
SYD9:55 amSydney Kingsford Smith
30h 04m
2 stops
ORD10:59 pmChicago O'Hare Intl
$1,337
Air New Zealand
Nov 8
ORD6:55 amChicago O'Hare Intl
32h 40m
2 stops
SYD8:35 amSydney Kingsford Smith
Nov 18
SYD11:50 amSydney Kingsford Smith
24h 06m
2 stops
ORD6:56 pmChicago O'Hare Intl
$1,341

momondo Fare Finder

 
Use the filters below to find and compare flights from Chicago to Sydney that are best for you.

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Route

Depart

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Price

Cheapest round-trip

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 2/8

2:33 pm-10:35 am

2 stops27h 02m

Sydney Kingsford Smith

Mon 2/22

7:25 pm-7:56 pm

2 stops41h 31m

$1,313
Quickest round-trip

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Fri 3/26

1:38 pm-6:25 am

1 stop24h 47m

Sydney Kingsford Smith

Tue 4/6

9:10 am-2:16 pm

1 stop20h 06m

$1,314

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Fri 3/5

3:25 pm-6:25 am

1 stop22h 00m

Sydney Kingsford Smith

Mon 3/15

11:20 am-7:45 pm

1 stop24h 25m

$1,314

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Sun 3/14

5:40 am-6:25 am

1 stop32h 45m

Sydney Kingsford Smith

Thu 4/1

2:15 pm-7:05 am

2 stops32h 50m

$1,314

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Fri 2/5

7:30 am-6:25 am

2 stops29h 55m

Sydney Kingsford Smith

Thu 2/18

9:20 am-10:57 pm

1 stop30h 37m

$1,335

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 2/3

12:45 pm-8:35 am

2 stops26h 50m

Sydney Kingsford Smith

Sun 2/21

9:55 am-10:59 pm

2 stops30h 04m

$1,337

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Fri 12/4

9:05 pm-6:25 am

1 stop40h 20m

Sydney Kingsford Smith

Fri 12/11

7:15 pm-4:15 pm

2 stops38h 00m

$1,339

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 1/25

6:50 pm-10:20 pm

2 stops34h 30m

Sydney Kingsford Smith

Tue 2/2

3:50 pm-2:30 pm

1 stop39h 40m

$1,407

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 4/27

7:20 pm-5:05 pm

1 stop30h 45m

Sydney Kingsford Smith

Wed 5/5

7:00 pm-3:05 pm

2 stops35h 05m

$1,408

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 12/29

6:45 pm-9:00 am

1 stop21h 15m

Sydney Kingsford Smith

Sat 1/23

8:55 am-3:59 pm

2 stops24h 04m

$1,415

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Chicago 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

What is the typical price of a round-trip flight between Chicago and Sydney?

Prices are currently low for flights on this route.

Typical prices usually range from $1,366 to $1,609.
The lowest price recently found on this route was $1,313.

What is the cheapest month to fly to Sydney?

In general, January is the cheapest month to fly from Chicago to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,238. If you are unable to visit Sydney during the month of January, then departing from Chicago during the month February is also very affordable. Most momondo users find prices during this month for around $1,290.

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

You are more likely to see cheaper flights to Sydney from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,500 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Chicago for as low as $1,081 on momondo.

Can stopping save me money on Chicago to Sydney flights?

You could potentially save up to 8% on your flight if you consider stops on a Chicago to Sydney flight.

How have Chicago to Sydney flight prices changed over time?

As of November 2026, prices for Chicago to Sydney flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from Chicago to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Sydney (CHI to SYD) flight deals and tips

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

Best Price Found

$571

Fastest flight time

25h 06m

Direct flights

None
The best one-way flight to Sydney from Chicago in the past 72 hours is $571. The best round-trip flight deal from Chicago to Sydney found on momondo in the last 72 hours is $1,313.
The fastest flight from Chicago to Sydney takes 25h 06m
There are no direct flights from Chicago to Sydney. There are no popular flight routes from Chicago to Sydney.

Frequently asked questions about flying from Chicago to Sydney

  • How far is Chicago to Sydney Kingsford Smith by plane?

    There are 9237.5 mi between Chicago and Sydney Kingsford Smith. By plane, this route typically takes 25h 06m.

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

    Prices for flights from Chicago to Sydney Kingsford Smith Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago 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.

  • What is the most popular airline from Chicago to Sydney?

Best airlines flying from Chicago to Sydney

Compare and see reviews for airlines that fly from Chicago to Sydney with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $237Free CancellationRating
7.8
8,698 reviews
Search Delta flights
Fiji AirwaysPriceFrom $716Free CancellationRating
8.0
262 reviews
Search Fiji Airways flights
Qantas AirwaysPriceFrom $894Free CancellationRating
7.5
1,123 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,021Free CancellationRating
7.0
12,231 reviews
Search American Airlines flights
Air CanadaPriceFrom $1,117Free CancellationRating
7.1
11,861 reviews
Search Air Canada flights
ANAPriceFrom $1,209Free CancellationRating
8.3
1,339 reviews
Search ANA flights
United AirlinesPriceFrom $1,238Free CancellationRating
7.3
10,458 reviews
Search United Airlines flights
Air New ZealandPriceFrom $1,279Free CancellationRating
8.0
682 reviews
Search Air New Zealand flights
Qatar AirwaysPriceFrom $1,382Free CancellationRating
7.4
3,712 reviews
Search Qatar Airways flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Wollongong
Penrith
Katoomba
Coogee
Leura
Terrigal
Cronulla
Randwick
Manly
Lithgow
Charlestown
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Chicago 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 Chicago to Sydney for you.

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

Yes. momondo enables you to select and highlight flights to Sydney from Chicago with this policy.

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

Once you have performed a search for Chicago to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Chicago to Sydney flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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