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$454+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 39 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 June 12, 2025.

Round-trip from

$1,045
(Trip.com)

One-way from

$454
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$927
From Chicago O'Hare Intl to Sydney Kingsford Smith
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One-way flight from Chicago O'Hare Intl to Sydney Kingsford Smith
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Highest demand for flights based on searches. 12% potential increase in price ($165 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/27:42 amORD - SYD
1 stop32h 48mMultiple Airlines
Thu 7/175:45 pmSYD - ORD
2 stops27h 18mMultiple Airlines
Deal found 6/12$1,045
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:20 pmORD - SYD
2 stops26h 25mFiji Airways
Sat 8/231:45 pmSYD - ORD
2 stops22h 12mFiji Airways
Deal found 6/10$1,227
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/272:07 pmORD - SYD
2 stops26h 23mAlaska Airlines
Wed 9/35:45 pmSYD - ORD
2 stops28h 18mAlaska Airlines
Deal found 6/10$1,252
This Gurufare deal was found by Cheapflights users on 6/11. 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.
Wed 9/105:50 pmORD - SYD
2 stops23h 55mAir New Zealand
Wed 9/2411:50 amSYD - ORD
2 stops24h 50mAir New Zealand
Deal found 6/11$1,303
This Gurufare deal was found by Cheapflights users on 6/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/27:03 pmORD - SYD
1 stop21h 27mQantas Airways
Tue 10/1410:10 amSYD - ORD
1 stop22h 52mQantas Airways
Deal found 6/10$1,364
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/28:48 amORD - SYD
2 stops31h 32mAir Canada
Tue 10/1410:20 amSYD - ORD
1 stop20h 35mAir Canada
Deal found 6/10$1,372
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:50 pmORD - SYD
2 stops32h 10mTurkish Airlines
Sun 10/199:55 pmSYD - ORD
2 stops40h 05mTurkish Airlines
Deal found 6/11$1,416

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 June 12, 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

Wed 7/2

7:42 am-7:30 am

1 stop32h 48m

Sydney Kingsford Smith

Thu 7/17

5:45 pm-6:03 am

2 stops27h 18m

$1,045

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 8/16

6:20 pm-11:45 am

2 stops26h 25m

Sydney Kingsford Smith

Sat 8/23

1:45 pm-8:57 pm

2 stops22h 12m

$1,227

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/27

2:07 pm-7:30 am

2 stops26h 23m

Sydney Kingsford Smith

Wed 9/3

5:45 pm-7:03 am

2 stops28h 18m

$1,252

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 9/10

5:50 pm-8:45 am

2 stops23h 55m

Sydney Kingsford Smith

Wed 9/24

11:50 am-9:40 pm

2 stops24h 50m

$1,303

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 9/2

7:03 pm-7:30 am

1 stop21h 27m

Sydney Kingsford Smith

Tue 10/14

10:10 am-5:02 pm

1 stop22h 52m

$1,364

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 9/2

3:40 pm-7:20 am

1 stop24h 40m

Sydney Kingsford Smith

Wed 9/24

9:20 am-8:01 am

2 stops37h 41m

$1,372

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 8/3

8:50 am-7:05 am

1 stop31h 15m

Sydney Kingsford Smith

Tue 8/19

9:10 am-5:43 pm

1 stop23h 33m

$1,429

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 8/19

5:45 pm-9:25 am

1 stop24h 40m

Sydney Kingsford Smith

Sat 8/30

8:55 pm-2:48 pm

2 stops32h 53m

$1,432

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/27

5:14 pm-7:05 am

2 stops22h 51m

Sydney Kingsford Smith

Wed 9/3

9:10 am-7:15 pm

1 stop25h 05m

$1,448

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 8/26

1:01 pm-2:40 pm

2 stops34h 39m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 24 results
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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 June 9, 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 39 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 $1,041). Flying from Chicago O'Hare Intl Airport to Sydney in December is currently the most expensive (average of $1,635). 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 June 12, 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 June 12, 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.
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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.
Air Tahiti Nui
8.7
Very good
64 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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.
Japan Airlines
8.3
Very good
1,489 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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.
ANA
8.3
Very good
882 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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.
Fiji Airways
8.1
Very good
194 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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.
Delta
8.0
Very good
7,950 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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 Fiji Airways is currently your cheapest option to Sydney, with prices starting at $1,227. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and Air New Zealand, with the lowest prices starting at $1,252 and $1,303, respectively.

  • 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 $674 on Alaska Airlines. Other airlines that offer cheap prices include Fiji Airways from $690 and Qantas Airways from $777 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. Los Angeles is followed by Dallas in terms of the most popular layover location on flights 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 $40 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, Dallas World Aquarium, and Reunion Tower 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, Dallas World Aquarium, or Reunion Tower can do so by traveling 15.0 mi, 15.5 mi, and 15.6 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 $61.

  • 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 Vancouver.

  • 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 $1,041). Flying from Chicago O'Hare Intl Airport to Sydney in December is currently the most expensive (average of $1,635). 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
Manly
Coogee

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$679Average$1,144FlexibilityNo cancel feeOn-time80%
Qantas AirwaysCheapest$813Average$960FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$825Average$870FlexibilityNo cancel feeOn-time71%
DeltaCheapest$852Average$965FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$970Average$1,181FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$972Average$1,240FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,203Average$1,467FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$1,275Average$1,506FlexibilityNo cancel feeOn-time78%

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