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$518+ Cheap flights from O'Hare Intl (ORD) to Sydney (SYD)

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from O'Hare Intl to Sydney

Cheapest flights from O'Hare Intl to Sydney
Explore the most affordable flight options available from O'Hare Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This oojo deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/15:10 pm
ORD
-
SYD
2 stops28h 40m
Qantas Airways
Sat 2/1411:20 am
SYD
-
ORD
1 stop27h 15m
Qantas Airways
Deal found 1/25$952
This oojo deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/16:40 pm
ORD
-
SYD
1 stop21h 20m
Qantas Airways
Mon 2/97:15 pm
SYD
-
ORD
2 stops37h 42m
Qantas Airways
Deal found 1/23$962
This oojo deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/256:40 pm
ORD
-
SYD
1 stop21h 20m
Qantas Airways
Mon 2/97:15 pm
SYD
-
ORD
2 stops36h 42m
Qantas Airways
Deal found 1/24$963
This oojo deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/113:23 pm
ORD
-
SYD
2 stops36h 27m
Qantas Airways
Thu 2/2611:20 am
SYD
-
ORD
1 stop20h 33m
Qantas Airways
Deal found 1/24$964
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/296:40 pm
ORD
-
SYD
1 stop21h 20m
Qantas Airways
Thu 2/57:05 am
SYD
-
ORD
2 stops24h 52m
Qantas Airways
Deal found 1/25$966
This Kiwi.com deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/410:01 am
ORD
-
SYD
1 stop28h 24m
Qantas Airways
Wed 3/47:05 am
SYD
-
ORD
2 stops24h 48m
Qantas Airways
Deal found 1/24$971
This oojo deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/283:10 pm
ORD
-
SYD
2 stops36h 40m
Qantas Airways
Thu 2/1911:20 am
SYD
-
ORD
1 stop29h 27m
Qantas Airways
Deal found 1/24$975
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/45:00 pm
ORD
-
SYD
1 stop23h 00m
Qantas Airways
Mon 2/167:15 pm
SYD
-
ORD
2 stops36h 38m
Qantas Airways
Deal found 1/25$987
This Kiwi.com deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/48:00 pm
ORD
-
SYD
2 stops28h 40m
Qantas Airways
Sun 3/19:25 pm
SYD
-
ORD
1 stop31h 59m
Qantas Airways
Deal found 1/24$994
This Kiwi.com deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:31 pm
ORD
-
SYD
1 stop43h 54m
Multiple Airlines
Tue 3/172:00 pm
SYD
-
ORD
2 stops30h 49m
Multiple Airlines
Deal found 1/23$1,030
This Kiwi.com deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:00 am
ORD
-
SYD
1 stop34h 30m
Multiple Airlines
Mon 5/111:15 pm
SYD
-
ORD
2 stops32h 31m
Multiple Airlines
Deal found 1/23$1,063
This Kiwi.com deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:39 pm
ORD
-
SYD
1 stop43h 46m
Multiple Airlines
Fri 3/202:00 pm
SYD
-
ORD
2 stops30h 49m
Multiple Airlines
Deal found 1/24$1,070

Find flight deals from O'Hare Intl to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$952
(oojo)

One-way from

$518
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,292
Provider with most accurate pricing for Chicago O'Hare Intl-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Sydney Kingsford Smith flights.
Search Deals
From Chicago O'Hare Intl to Sydney Kingsford Smith
Search Deals
One-way flight from Chicago O'Hare Intl to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($170 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated January 26, 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

O'Hare Intl

Fly to

Sydney

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 3/4

4:49 pm-8:50 pm

2 stops35h 01m

Sydney Kingsford Smith

Sun 3/15

11:20 am-2:53 pm

1 stop19h 33m

$1,125

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 2/25

2:33 pm-9:20 am

2 stops25h 47m

Sydney Kingsford Smith

Sun 4/5

9:25 pm-5:37 am

1 stop23h 12m

$1,138

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 2/23

1:24 pm-9:50 am

2 stops27h 26m

Sydney Kingsford Smith

Sun 4/5

9:25 pm-5:05 pm

1 stop34h 40m

$1,201

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 4/17

12:50 pm-7:20 am

2 stops27h 30m

Sydney Kingsford Smith

Sat 4/25

9:20 am-7:25 pm

2 stops25h 05m

$1,255

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 2/22

1:24 pm-9:20 am

2 stops26h 56m

Sydney Kingsford Smith

Fri 3/6

2:05 pm-5:45 pm

1 stop20h 40m

$1,259

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 3/13

4:44 pm-1:00 pm

2 stops28h 16m

Sydney Kingsford Smith

Mon 3/23

1:05 pm-8:40 pm

1 stop23h 35m

$1,277

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 2/17

7:15 am-9:35 am

3 stops33h 20m

Sydney Kingsford Smith

Tue 3/3

11:20 am-7:45 pm

2 stops25h 25m

$1,311

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 2/10

3:35 pm-9:35 am

1 stop25h 00m

Sydney Kingsford Smith

Tue 3/3

11:20 am-7:45 pm

1 stop25h 25m

$1,311

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 2/8

3:35 pm-9:35 am

1 stop25h 00m

Sydney Kingsford Smith

Tue 3/10

10:20 am-7:45 pm

1 stop25h 25m

$1,375

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 2/11

11:50 am-7:20 pm

2 stops38h 30m

Sydney Kingsford Smith

Wed 3/4

9:15 pm-6:25 pm

2 stops38h 10m

$1,414

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 19 results
1
2

Compare providers for flights from O'Hare Intl to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Sydney in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from O'Hare Intl with our price prediction graph.
Estimated round-trip 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 Chicago O'Hare Intl Airport to Sydney

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

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Sydney. Price data was last updated on January 23, 2026.

To ensure you get the cheapest price possible for a flight from Chicago O'Hare Intl Airport to Sydney, you should look to book at least 48 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Sydney?

Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $198). Flying from Chicago O'Hare Intl Airport to Sydney in December is currently the most expensive (average of $854). 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.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated January 26, 2026.
Read reviews from past customers who have flown Fiji Airways, Qantas Airways, and United Airlines from Chicago O'Hare Intl Airport to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.0
Very good
222 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.5

Food

7.4

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.0
Very good
222 reviews
Fiji Airways
8.0
Very good
222 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.5

Food

7.4

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Qantas Airways
7.5
Good
977 reviews
Fiji Airways
8.0
Very good
222 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.5

Food

7.4

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
United Airlines
7.4
Good
9,199 reviews
Fiji Airways
8.0
Very good
222 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.5

Food

7.4

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
American Airlines
7.2
Good
11,189 reviews
Fiji Airways
8.0
Very good
222 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.5

Food

7.4

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Air Canada
7.1
Good
10,656 reviews
Fiji Airways
8.0
Very good
222 reviews

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.5

Food

7.4

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Chicago O'Hare Intl?

    If you book a flight to Sydney from Chicago O'Hare Intl, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 4.6 mi from the center of Sydney. There are 0 flights from Chicago O'Hare Intl to Kingsford Smith per day from 8 different airlines.

  • How long is the flight from Chicago O'Hare Intl Airport to Sydney?

    There are many flights that can get you from Chicago O'Hare Intl Airport to Sydney in 27h 30m. Fly via Qantas Airways or Air Canada to get the fastest option. There are 9228 mi between Chicago O'Hare Intl Airport and Sydney. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Sydney round-trip?

    Flying on ANA is currently your cheapest option to Sydney, with prices starting at $703. Additional round-trip tickets that might be worth considering are offered by American Airlines and Qantas Airways, with the lowest prices starting at $803 and $805, respectively. ANA is currently priced 36% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Sydney one-way?

    One-way options have recently been found by users for as low as $304 on ANA. Other airlines that offer cheap prices include Qantas Airways from $404 and American Airlines from $427 one-way.

  • Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to Sydney?

    Chicago O'Hare Intl Airport to Sydney flights have a layover in Los Angeles most of the time.

  • What are some popular things to do or see while on a layover in Los Angeles?

    Most Los Angeles visitors opt to spend their time experiencing Hollywood Bowl, Hollywood Walk of Fame, and L.A. Live. Hollywood Bowl, Hollywood Walk of Fame, and L.A. Live can be accessed by traveling approximately 12.5 mi, 11.7 mi, and 10.8 mi, respectively from Los Angeles. Travelers can book a car rental at Los Angeles for about $40 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Chicago O'Hare Intl Airport to Sydney flights?

    Of the flights from Chicago O'Hare Intl Airport to Sydney that have layovers, the fewest flights stop in Dallas.

  • Can I find deals for flights from O'Hare Intl to Sydney that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Sydney.

  • Can I find deals for business class flights from O'Hare Intl to Sydney?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Sydney 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 Chicago O'Hare Intl Airport to Sydney?

    Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $198). Flying from Chicago O'Hare Intl Airport to Sydney in December is currently the most expensive (average of $854). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly

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Alternative routes for O'Hare Intl to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Midway to Sydney flights
O'Hare Intl to Coolangatta flights

Top 8 airlines flying from O'Hare Intl to Sydney

Discover the top 8 airlines that operate flights from O'Hare Intl to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$703Average$1,237FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$803Average$854FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$805Average$930FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$849Average$1,181FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$851Average$1,204FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$870Average$1,521FlexibilityNo cancel feeOn-time69%
DeltaCheapest$935Average$1,034FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$1,282Average$1,461FlexibilityNo cancel feeOn-time78%

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