Sydney

$432+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Mar 30 — Apr 61
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1. Tell us where you want to go
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Sydney Kingsford Smith are usually found in March or May, booked 13 days in advance, depart on a Saturday or Sunday and return on a Monday

Cheap 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$824
(Cheapflightsfares)

One-way from

$500
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$857
Provider with most accurate pricing for Chicago O'Hare Intl-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Sydney Kingsford Smith flights.
From Chicago O'Hare Intl to Sydney Kingsford Smith
One-way flight from Chicago O'Hare Intl to Sydney Kingsford Smith
Highest demand for flights based on searches. 11% potential increase in price ($144 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
Average for round-trip flights in March 2025

Find 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 March 25, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/253:15 pmORD - SYD
1 stop25h 15mQantas Airways
Wed 6/189:10 amSYD - ORD
1 stop23h 07mQantas Airways
Deal found 3/24$824
This Mytrip deal was found by Cheapflights users on 3/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/111:53 amORD - SYD
2 stops33h 22mMultiple Airlines
Fri 5/91:15 pmSYD - ORD
2 stops32h 27mMultiple Airlines
Deal found 3/24$963
This Air Canada deal was found by Cheapflights users on 3/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/68:45 amORD - SYD
2 stops31h 35mAir Canada
Tue 5/139:20 amSYD - ORD
2 stops37h 42mAir Canada
Deal found 3/24$1,036
This KAYAK deal was found by Cheapflights users on 3/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/106:45 pmORD - SYD
2 stops26h 00mFiji Airways
Sat 5/171:45 pmSYD - ORD
2 stops21h 39mFiji Airways
Deal found 3/24$1,230
This Gurufare deal was found by Cheapflights users on 3/23. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/117:15 amORD - SYD
2 stops34h 15mANA
Fri 11/2112:25 pmSYD - ORD
2 stops33h 38mANA
Deal found 3/23$1,265
This Gotogate deal was found by Cheapflights users on 3/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/18:20 pmORD - SYD
2 stops54h 15mTurkish Airlines
Fri 12/59:15 pmSYD - ORD
2 stops53h 55mTurkish Airlines
Deal found 3/23$1,410
This StudentUniverse deal was found by Cheapflights users on 3/24. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/154:00 pmORD - SYD
1 stop27h 50mCathay Pacific
Tue 5/69:50 pmSYD - ORD
1 stop31h 35mCathay Pacific
Deal found 3/24$1,423
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/87:40 pmORD - SYD
1 stop20h 20mUnited Airlines
Tue 6/2410:20 amSYD - ORD
2 stops27h 21mUnited Airlines
Deal found 3/24$1,461
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/89:50 amORD - SYD
2 stops29h 45mDelta
Mon 6/239:25 amSYD - ORD
2 stops22h 24mDelta
Deal found 3/24$1,470
This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/236:45 pmORD - SYD
1 stop21h 20mAmerican Airlines
Fri 8/159:10 amSYD - ORD
2 stops22h 00mAmerican Airlines
Deal found 3/24$1,496

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 March 25, 2025.
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

Sun 5/25

3:15 pm-7:30 am

1 stop25h 15m

Sydney Kingsford Smith

Wed 6/18

9:10 am-5:17 pm

1 stop23h 07m

$824

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 5/1

11:53 am-12:15 pm

2 stops33h 22m

Sydney Kingsford Smith

Fri 5/9

1:15 pm-6:42 am

2 stops32h 27m

$963

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 5/6

8:45 am-7:20 am

2 stops31h 35m

Sydney Kingsford Smith

Tue 5/13

9:20 am-8:02 am

2 stops37h 42m

$1,036

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 5/10

6:45 pm-11:45 am

2 stops26h 00m

Sydney Kingsford Smith

Sat 5/17

1:45 pm-8:24 pm

2 stops21h 39m

$1,230

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 4/15

4:00 pm-10:50 am

1 stop27h 50m

Sydney Kingsford Smith

Tue 5/6

9:50 pm-2:25 pm

1 stop31h 35m

$1,423

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 6/8

7:40 pm-7:00 am

1 stop20h 20m

Sydney Kingsford Smith

Tue 6/24

10:20 am-10:41 pm

2 stops27h 21m

$1,461

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 7/23

7:50 pm-7:00 pm

2 stops32h 10m

Sydney Kingsford Smith

Fri 8/15

8:55 pm-9:40 am

2 stops51h 45m

$1,464

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 6/8

9:50 am-6:35 am

2 stops29h 45m

Sydney Kingsford Smith

Mon 6/23

9:25 am-4:49 pm

2 stops22h 24m

$1,470

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 7/23

6:45 pm-7:05 am

1 stop21h 20m

Sydney Kingsford Smith

Fri 8/15

9:10 am-4:10 pm

2 stops22h 00m

$1,496

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 5/6

5:45 pm-7:15 pm

1 stop34h 30m

Sydney Kingsford Smith

Mon 5/19

11:50 am-8:40 am

1 stop35h 50m

$1,519

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 25 results
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*3 stars

*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 March 21, 2025.

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 13 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, March is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $1,044). Flying from Chicago O'Hare Intl Airport to Sydney in December is currently the most expensive (average of $1,643). 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.

What is the cheapest time of day to fly from ORD to SYD?

Find hourly flight availability from O'Hare Intl to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Sydney in the afternoon. Doing so could potentially save you 17% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Sydney?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Sydney flight should consider departing on Wednesday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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 March 25, 2025.
Get a feel of what it's like to fly with Air Tahiti Nui, Japan Airlines and ANA from Chicago to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Crew

9.1

Boarding

8.7

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Comfort

8.0

Crew

9.1

Boarding

8.7

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Comfort

8.0

Crew

9.1

Boarding

8.7

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
8.3
Very good

Comfort

8.0

Crew

9.1

Boarding

8.7

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Comfort

8.0

Crew

9.1

Boarding

8.7

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Comfort

8.0

Crew

9.1

Boarding

8.7

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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.

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

    Flying on Qantas Airways is currently your cheapest option to Sydney, with prices starting at $824. Additional round-trip tickets that might be worth considering are offered by Air Canada and Fiji Airways, with the lowest prices starting at $1,031 and $1,230, respectively. Qantas Airways is currently priced 26% 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 $647 on Fiji Airways. Other airlines that offer cheap prices include ANA from $701 and Alaska Airlines from $745 one-way.

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

  • 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 $38 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Dallas?

    American Airlines Center, Dos Equis Pavilion, and Dallas World Aquarium are currently the most popular points of interest in Dallas at the moment. Those on a layover in Dallas interested in visiting American Airlines Center, Dos Equis Pavilion, or Dallas World Aquarium can do so by traveling 15.0 mi, 18.3 mi, and 15.5 mi, respectively from Dallas/Fort Worth. Those on a layover in Dallas in need of a rental car can book one at Dallas/Fort Worth for about $55.

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

  • 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, March is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $1,044). Flying from Chicago O'Hare Intl Airport to Sydney in December is currently the most expensive (average of $1,643). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Wollongong
Parramatta
Coogee
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.

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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$679Average$781FlexibilityNo cancel feeOn-time80%
Qantas AirwaysCheapest$807Average$1,017FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$825Average$872FlexibilityNo cancel feeOn-time71%
DeltaCheapest$852Average$967FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$971Average$1,258FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$1,138Average$1,317FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$1,204Average$1,496FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$1,272Average$1,521FlexibilityNo cancel feeOn-time78%
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