HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sydney

$391+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to Sydney with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Chicago O'Hare Intl to Sydney Kingsford Smith are usually found in May or March, booked 76 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$821
(Justfly.com)

One-way from

$391
(American Airlines)

Popular in

December

Cheapest in

May

Average price

$923
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. 10% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 20, 2025.

This Justfly.com deal was found by Cheapflights users on 2/20. 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.
Sat 3/88:20 pmORD - SYD
1 stop42h 05mQantas Airways
Sun 3/1611:15 amSYD - ORD
1 stop28h 44mQantas Airways
Deal found 2/20$821
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 4/139:45 amORD - SYD
1 stop29h 50mAmerican Airlines
Tue 6/35:35 pmSYD - ORD
1 stop20h 08mAmerican Airlines
Deal found 2/19$823
This Flighttix deal was found by Cheapflights users on 2/19. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/238:31 amORD - SYD
1 stop28h 39mIberia
Sun 3/911:50 amSYD - ORD
1 stop25h 16mIberia
Deal found 2/19$826
This Trip.com deal was found by Cheapflights users on 2/20. 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.
Sun 4/65:45 pmORD - SYD
1 stop34h 30mMultiple Airlines
Sun 4/139:10 amSYD - ORD
1 stop29h 49mMultiple Airlines
Deal found 2/20$858
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 10/13:50 pmORD - SYD
2 stops23h 45mDelta
Sun 10/2610:05 amSYD - ORD
2 stops27h 55mDelta
Deal found 2/19$924
This KAYAK deal was found by Cheapflights users on 2/19. 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 11/294:25 pmORD - SYD
1 stop34h 50mANA
Tue 12/912:25 pmSYD - ORD
1 stop42h 25mANA
Deal found 2/19$943

Find flights from O'Hare Intl to Sydney within your budget

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 February 20, 2025.

Fly from

O'Hare Intl

Fly to

Sydney

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 3/8

8:20 pm-7:25 am

1 stop42h 05m

Sydney Kingsford Smith

Sun 3/16

11:15 am-11:59 pm

1 stop28h 44m

$821

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 4/13

9:45 am-6:35 am

1 stop29h 50m

Sydney Kingsford Smith

Tue 6/3

5:35 pm-10:43 pm

1 stop20h 08m

$823

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 2/23

8:31 am-6:10 am

1 stop28h 39m

Sydney Kingsford Smith

Sun 3/9

11:50 am-8:06 pm

1 stop25h 16m

$826

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 4/6

5:45 pm-7:15 pm

1 stop34h 30m

Sydney Kingsford Smith

Sun 4/13

9:10 am-11:59 pm

1 stop29h 49m

$858

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 3/18

1:26 pm-7:45 am

2 stops26h 19m

Sydney Kingsford Smith

Tue 3/25

10:05 am-5:46 pm

2 stops23h 41m

$937

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-8:27 pm

2 stops21h 42m

$1,175

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 4/30

3:52 pm-10:35 am

2 stops27h 43m

Sydney Kingsford Smith

Sat 5/10

6:20 pm-10:58 pm

2 stops43h 38m

$1,226

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 5/15

3:00 pm-6:35 am

2 stops24h 35m

$391

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 2/24

8:50 am-9:00 am

1 stop31h 10m

$407

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 2/25

2:13 pm-10:10 am

2 stops26h 57m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 15 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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust 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.

Travel insights for flights from O'Hare Intl to Sydney

Get recent, data-driven insights about flights from O'Hare Intl to Sydney including ideal travel times, pricing trends, and more.

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 February 14, 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 76 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, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $1,051). 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 February 20, 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 February 20, 2025.
Get a feel of what it's like to fly with ANA, Fiji Airways and Delta 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.
ANA
8.4
Very good
842 reviews

Comfort

8.2

Entertainment

7.9

Food

7.7

Overall

8.4

Crew

8.7

Boarding

8.5

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

MNL - HND

Great experience! Roomy economy leg room with foot rest, great crew and accommodations. Highly recommend!

ANA
8.4
Very good
842 reviews
ANA
8.4
Very good
842 reviews

Comfort

8.2

Entertainment

7.9

Food

7.7

Overall

8.4

Crew

8.7

Boarding

8.5

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

MNL - HND

Great experience! Roomy economy leg room with foot rest, great crew and accommodations. Highly recommend!

Fiji Airways
8.0
Very good
185 reviews
ANA
8.4
Very good
842 reviews

Comfort

8.2

Entertainment

7.9

Food

7.7

Overall

8.4

Crew

8.7

Boarding

8.5

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

MNL - HND

Great experience! Roomy economy leg room with foot rest, great crew and accommodations. Highly recommend!

Delta
8.0
Very good
8,219 reviews
ANA
8.4
Very good
842 reviews

Comfort

8.2

Entertainment

7.9

Food

7.7

Overall

8.4

Crew

8.7

Boarding

8.5

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

MNL - HND

Great experience! Roomy economy leg room with foot rest, great crew and accommodations. Highly recommend!

Air New Zealand
7.9
Good
461 reviews
ANA
8.4
Very good
842 reviews

Comfort

8.2

Entertainment

7.9

Food

7.7

Overall

8.4

Crew

8.7

Boarding

8.5

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

MNL - HND

Great experience! Roomy economy leg room with foot rest, great crew and accommodations. Highly recommend!

China Southern
7.6
Good
87 reviews
ANA
8.4
Very good
842 reviews

Comfort

8.2

Entertainment

7.9

Food

7.7

Overall

8.4

Crew

8.7

Boarding

8.5

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

MNL - HND

Great experience! Roomy economy leg room with foot rest, great crew and accommodations. Highly recommend!

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 $821. Additional round-trip tickets that might be worth considering are offered by American Airlines and Iberia, with the lowest prices starting at $823 and $826, respectively. Qantas Airways is currently priced 27% 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 $391 on American Airlines. Other airlines that offer cheap prices include Qantas Airways from $407 and Air Canada from $833 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 Vancouver 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 $32 per day to make their sightseeing more efficient.

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

    Pacific Central Station, Queen Elizabeth Theatre, and Vancouver Harbour Centre are currently the most popular points of interest in Vancouver at the moment. Those on a layover in Vancouver interested in visiting Pacific Central Station, Queen Elizabeth Theatre, or Vancouver Harbour Centre can do so by traveling 6.6 mi, 6.6 mi, and 6.9 mi, respectively from Vancouver Intl. Those on a layover in Vancouver in need of a rental car can book one at Vancouver Intl for about $39.

  • 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 Auckland.

  • 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, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $1,051). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$679Average$781FlexibilityNo cancel feeOn-time80%
Qantas AirwaysCheapest$814Average$1,185FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$827Average$877FlexibilityNo cancel feeOn-time71%
DeltaCheapest$851Average$983FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$958Average$1,282FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,087Average$1,472FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$1,138Average$1,317FlexibilityNo cancel feeOn-time72%
Air New ZealandCheapest$1,197Average$1,275FlexibilityNo cancel feeOn-time78%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.