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$644+ 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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
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 May 11, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 5/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
Tue 9/88:55 pm
SYD
-
ORD
1 stop26h 45m
ANA
Deal found 5/7$1,231
This Cheapflightsfares deal was found by Cheapflights users on 5/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
Sun 8/3011:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 5/6$1,241
This KAYAK deal was found by Cheapflights users on 5/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:35 pm
ORD
-
SYD
1 stop34h 40m
ANA
Tue 11/1012:25 pm
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/9$1,261
This CrystalTravel deal was found by Cheapflights users on 5/6. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
Thu 8/2711:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 5/6$1,265
This BusinessClass deal was found by Cheapflights users on 5/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
Tue 9/811:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/10$1,272
This Justfly.com deal was found by Cheapflights users on 5/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:45 pm
ORD
-
SYD
1 stop24h 40m
ANA
Mon 9/711:45 am
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/8$1,273
This Justfly.com deal was found by Cheapflights users on 5/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:45 pm
ORD
-
SYD
1 stop34h 25m
ANA
Wed 10/1412:45 pm
SYD
-
ORD
1 stop35h 55m
ANA
Deal found 5/9$1,274
This KAYAK deal was found by Cheapflights users on 5/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:50 pm
ORD
-
SYD
2 stops32h 20m
ANA
Fri 8/2811:45 am
SYD
-
ORD
2 stops32h 00m
ANA
Deal found 5/8$1,276

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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,231
(Cheapflightsfares)

One-way from

$644
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$1,327
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.
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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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in May 2026
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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 May 11, 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
Quickest round-trip

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 6/29

6:55 pm-6:50 am

1 stop20h 55m

Sydney Kingsford Smith

Tue 7/7

9:15 am-1:46 pm

1 stop19h 31m

$1,611

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 7/6

11:30 am-6:50 am

2 stops28h 20m

Sydney Kingsford Smith

Mon 7/27

9:15 am-6:57 pm

2 stops24h 42m

$1,615

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 7/8

4:45 pm-6:55 am

2 stops23h 10m

Sydney Kingsford Smith

Wed 7/29

10:20 am-5:05 pm

2 stops21h 45m

$1,616

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 6/27

1:49 pm-6:50 am

2 stops26h 01m

Sydney Kingsford Smith

Tue 7/14

9:15 am-6:57 pm

2 stops24h 42m

$1,616

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 7/24

8:20 pm-6:50 pm

2 stops31h 30m

Sydney Kingsford Smith

Fri 7/31

8:45 pm-6:19 pm

2 stops36h 34m

$1,713

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 6/23

6:30 pm-6:50 am

1 stop21h 20m

Sydney Kingsford Smith

Mon 7/6

9:15 am-1:50 pm

1 stop19h 35m

$1,761

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 6/13

11:23 am-6:50 am

2 stops28h 27m

Sydney Kingsford Smith

Sun 6/21

9:15 am-9:57 pm

2 stops27h 42m

$1,765

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 6/8

2:07 pm-6:50 am

2 stops25h 43m

Sydney Kingsford Smith

Tue 6/16

9:15 am-6:29 pm

2 stops24h 14m

$1,765
Cheapest one-way

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 8/9

9:57 pm-7:30 am

2 stops42h 33m

$671

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 5/31

9:37 pm-7:30 am

2 stops42h 53m

$687

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 14 resultsSorted by cheapest first
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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
GurufarePrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
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?

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 47 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, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $1,189). Flying from Chicago O'Hare Intl Airport to Sydney in July is currently the most expensive (average of $1,661). 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 much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Sydney?

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 May 11, 2026.
Read reviews from past customers who have flown Fiji Airways,Qantas Airways, andUnited 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
8.1
Very good
240 reviews

Crew

8.6

Food

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.5

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
Fiji Airways
8.1
Very good
240 reviews
Fiji Airways
8.1
Very good
240 reviews

Crew

8.6

Food

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.5

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
Qantas Airways
7.5
Good
1,034 reviews
Fiji Airways
8.1
Very good
240 reviews

Crew

8.6

Food

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.5

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
United Airlines
7.4
Good
9,699 reviews
Fiji Airways
8.1
Very good
240 reviews

Crew

8.6

Food

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.5

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
American Airlines
7.1
Good
11,667 reviews
Fiji Airways
8.1
Very good
240 reviews

Crew

8.6

Food

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.5

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
Air Canada
7.1
Good
11,017 reviews
Fiji Airways
8.1
Very good
240 reviews

Crew

8.6

Food

7.5

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.5

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

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 7 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 20h 55m. Fly via Delta or United Airlines 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 American Airlines is currently your cheapest option to Sydney, with prices starting at $198. Additional round-trip tickets that might be worth considering are offered by Fiji Airways and Qantas Airways, with the lowest prices starting at $716 and $836, respectively. American Airlines is currently priced 85% 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 $441 on Qantas Airways. Other airlines that offer cheap prices include ANA from $691 and United Airlines from $836 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, Little Tokyo, and Hollywood Walk of Fame. Hollywood Bowl, Little Tokyo, and Hollywood Walk of Fame can be accessed by traveling approximately 12.4 mi, 12.2 mi, and 11.7 mi, respectively from Los Angeles. Travelers can book a car rental at Los Angeles for about $42 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, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $1,189). Flying from Chicago O'Hare Intl Airport to Sydney in July is currently the most expensive (average of $1,661). 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
Coogee
Manly

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Top 7 airlines flying from O'Hare Intl to Sydney

Discover the top 7 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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$198Average$1,444FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$716Average$1,181FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$836Average$1,359FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$870Average$1,558FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$898Average$1,261FlexibilityNo cancel feeOn-time67%
ANACheapest$1,193Average$1,288FlexibilityNo cancel feeOn-time80%
Air New ZealandCheapest$1,282Average$1,545FlexibilityNo cancel feeOn-time78%

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