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Cheap flights from Chicago O'Hare Intl Airport to Sydney from $560

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Sydney departing on 8/22. 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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0 bags

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Find the cheapest flights from Chicago O'Hare Intl Airport to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:07 pm - 7:30 am
ORD
-
SYD
43h 23m
1 stop
Multiple Airlines Logo
1:15 pm - 6:19 am
SYD
-
ORD
32h 04m
2 stops
$1,129Multiple Airlines
Sat, Aug 22 - Wed, Sep 2
ANA Logo
5:45 pm - 7:10 pm
ORD
-
SYD
34h 25m
1 stop
ANA Logo
11:45 am - 2:55 pm
SYD
-
ORD
42h 10m
1 stop
$1,158ANA
Sat, Aug 22 - Tue, Sep 1
Multiple Airlines Logo
9:57 pm - 11:50 am
ORD
-
SYD
46h 53m
3 stops
Multiple Airlines Logo
6:15 am - 5:28 am
SYD
-
ORD
38h 13m
3 stops
$1,220Multiple Airlines
Wed, Jul 22 - Tue, Aug 11
ANA Logo
5:45 pm - 7:10 pm
ORD
-
SYD
34h 25m
1 stop
ANA Logo
11:45 am - 8:40 am
SYD
-
ORD
35h 55m
1 stop
$1,259ANA
Sat, Aug 29 - Mon, Sep 7
ANA Logo
5:45 pm - 7:10 pm
ORD
-
SYD
34h 25m
1 stop
ANA Logo
11:45 am - 2:55 pm
SYD
-
ORD
42h 10m
1 stop
$1,266ANA
Sat, Aug 22 - Wed, Sep 2
ANA Logo
5:45 pm - 7:10 pm
ORD
-
SYD
34h 25m
1 stop
ANA Logo
11:45 am - 2:55 pm
SYD
-
ORD
42h 10m
1 stop
$1,270ANA
Fri, Aug 21 - Thu, Sep 3
ANA Logo
7:50 pm - 7:10 pm
ORD
-
SYD
32h 20m
2 stops
ANA Logo
11:45 am - 8:40 am
SYD
-
ORD
35h 55m
1 stop
$1,273ANA
Wed, Aug 26 - Tue, Sep 8
ANA Logo
5:45 pm - 7:10 pm
ORD
-
SYD
34h 25m
1 stop
ANA Logo
11:45 am - 8:40 am
SYD
-
ORD
35h 55m
1 stop
$1,274ANA
Wed, Aug 26 - Tue, Sep 8
ANA Logo
5:35 pm - 8:15 pm
ORD
-
SYD
34h 40m
1 stop
ANA Logo
12:25 pm - 7:20 am
SYD
-
ORD
35h 55m
1 stop
$1,275ANA
Sun, Oct 25 - Mon, Nov 9
ANA Logo
7:50 pm - 7:10 pm
ORD
-
SYD
32h 20m
2 stops
ANA Logo
11:45 am - 4:45 am
SYD
-
ORD
32h 00m
2 stops
$1,277ANA
Wed, Aug 26 - Tue, Sep 8

Air Canada flights from Chicago O'Hare Intl Airport to Sydney

Our best Air Canada deals on Chicago O'Hare Intl Airport to Sydney flight tickets
Air Canada
Aug 24
ORD3:40 pmChicago O'Hare Intl
24h 40m
1 stop
SYD7:20 amSydney Kingsford Smith
Oct 7
SYD10:20 amSydney Kingsford Smith
22h 45m
2 stops
ORD5:05 pmChicago O'Hare Intl
$1,378
Air Canada
May 31
ORD3:40 pmChicago O'Hare Intl
24h 40m
1 stop
SYD7:20 amSydney Kingsford Smith
Jun 4
SYD9:20 amSydney Kingsford Smith
20h 25m
1 stop
ORD2:45 pmChicago O'Hare Intl
$1,389
Air Canada
May 24
ORD3:40 pmChicago O'Hare Intl
24h 40m
1 stop
SYD7:20 amSydney Kingsford Smith
Jun 9
SYD9:20 amSydney Kingsford Smith
20h 25m
1 stop
ORD2:45 pmChicago O'Hare Intl
$1,391

ANA flights from Chicago O'Hare Intl Airport to Sydney

Our best ANA deals on Chicago O'Hare Intl Airport to Sydney flight tickets
ANA
Aug 22
ORD5:45 pmChicago O'Hare Intl
34h 25m
1 stop
SYD7:10 pmSydney Kingsford Smith
Sep 1
SYD11:45 amSydney Kingsford Smith
42h 10m
1 stop
ORD2:55 pmChicago O'Hare Intl
$1,158
ANA
Aug 29
ORD5:45 pmChicago O'Hare Intl
34h 25m
1 stop
SYD7:10 pmSydney Kingsford Smith
Sep 7
SYD11:45 amSydney Kingsford Smith
35h 55m
1 stop
ORD8:40 amChicago O'Hare Intl
$1,259
ANA
Aug 22
ORD5:45 pmChicago O'Hare Intl
34h 25m
1 stop
SYD7:10 pmSydney Kingsford Smith
Sep 2
SYD11:45 amSydney Kingsford Smith
42h 10m
1 stop
ORD2:55 pmChicago O'Hare Intl
$1,266

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 18, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 8/22

9:07 pm-7:30 am

1 stop43h 23m

Sydney Kingsford Smith

Wed 9/2

1:15 pm-6:19 am

2 stops32h 04m

$1,129

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 8/22

5:45 pm-7:10 pm

1 stop34h 25m

Sydney Kingsford Smith

Tue 9/1

11:45 am-2:55 pm

1 stop42h 10m

$1,158

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 7/22

9:57 pm-11:50 am

3 stops46h 53m

Sydney Kingsford Smith

Tue 8/11

6:15 am-5:28 am

3 stops38h 13m

$1,220

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 8/29

5:45 pm-7:10 pm

1 stop34h 25m

Sydney Kingsford Smith

Mon 9/7

11:45 am-8:40 am

1 stop35h 55m

$1,259

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 8/22

5:45 pm-7:10 pm

1 stop34h 25m

Sydney Kingsford Smith

Wed 9/2

11:45 am-2:55 pm

1 stop42h 10m

$1,266

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 8/21

5:45 pm-7:10 pm

1 stop34h 25m

Sydney Kingsford Smith

Thu 9/3

11:45 am-2:55 pm

1 stop42h 10m

$1,270

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/26

7:50 pm-7:10 pm

2 stops32h 20m

Sydney Kingsford Smith

Tue 9/8

11:45 am-8:40 am

1 stop35h 55m

$1,273

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/26

5:45 pm-7:10 pm

1 stop34h 25m

Sydney Kingsford Smith

Tue 9/8

11:45 am-8:40 am

1 stop35h 55m

$1,274

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 10/25

5:35 pm-8:15 pm

1 stop34h 40m

Sydney Kingsford Smith

Mon 11/9

12:25 pm-7:20 am

1 stop35h 55m

$1,275
Quickest round-trip

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/26

7:50 pm-7:10 pm

2 stops32h 20m

Sydney Kingsford Smith

Tue 9/8

11:45 am-4:45 am

2 stops32h 00m

$1,277

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 O'Hare Intl Airport 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 O'Hare Intl Airport and Sydney?

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Chicago O'Hare Intl Airport to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,189. If you are unable to visit Sydney during the month of November, then departing from Chicago O'Hare Intl Airport during the month August is also very affordable. Most momondo users find prices during this month for around $1,218.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Sydney?

You are more likely to see cheaper flights to Sydney from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,387 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Chicago O'Hare Intl Airport for as low as $1,126 on momondo.

Can stopping save me money on Chicago O'Hare Intl Airport to Sydney flights?

You could potentially save up to 7% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Sydney flight.

How have Chicago O'Hare Intl Airport to Sydney flight prices changed over time?

As of May 2026, prices for Chicago O'Hare Intl Airport to Sydney flights are approximately 61% more expensive when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to Sydney

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

Cheap Chicago O'Hare Intl Airport to Sydney (ORD to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Sydney

Fastest flight time

24h 40m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Sydney takes 24h 40m
There are no direct flights from Chicago O'Hare Intl Airport to Sydney. There are no popular flight routes from Chicago O'Hare Intl Airport to Sydney.
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Sydney

  • How far is Chicago O'Hare Intl to Sydney Kingsford Smith by plane?

    Sydney Kingsford Smith is 9224.8 mi away from Chicago O'Hare Intl. 24h 40m is a normal flight duration for this route.

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

    Prices for flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport.

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

    The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Chicago O'Hare Intl Airport to Sydney?

Best airlines flying from Chicago O'Hare Intl Airport to Sydney

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Sydney with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $198Free CancellationRating
7.1
11,646 reviews
Search American Airlines flights
Fiji AirwaysPriceFrom $716Free CancellationRating
8.1
241 reviews
Search Fiji Airways flights
Qantas AirwaysPriceFrom $836Free CancellationRating
7.5
1,037 reviews
Search Qantas Airways flights
United AirlinesPriceFrom $870Free CancellationRating
7.4
9,732 reviews
Search United Airlines flights
Air CanadaPriceFrom $898Free CancellationRating
7.1
11,062 reviews
Search Air Canada flights
ANAPriceFrom $1,193Free CancellationRating
8.3
1,211 reviews
Search ANA flights
Air New ZealandPriceFrom $1,282Free CancellationRating
8.0
645 reviews
Search Air New Zealand flights

Traveling to a place near Sydney?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Sydney. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

Once all potential Chicago to Sydney flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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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