Cheap flights from Sydney to Chicago O'Hare Intl Airport from $977
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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
17 Dec — 24 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Sydney Kingsford Smith to Chicago O'Hare Intl are usually found in February or May, booked 78 days in advance, depart on a Monday or Thursday and return on a Friday
Cheap flight deals from Sydney to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to O'Hare Intl (ORD). 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 17 November 2025.
Explore the most affordable flight options available from Sydney to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 November 2025.
Mon 1/1209:55SYD - ORD
2 stops25h 55mAir New Zealand
Mon 8/1214:35ORD - SYD
2 stops26h 55mAir New Zealand
Deal found 16/11$1,706
Mon 29/1211:20SYD - ORD
1 stop29h 20mQantas Airways
Sun 11/118:40ORD - SYD
1 stop21h 20mQantas Airways
Deal found 15/11$2,221
Mon 29/1216:00SYD - ORD
1 stop39h 41mAir Canada
Sun 11/121:15ORD - SYD
2 stops43h 20mAir Canada
Deal found 15/11$2,356
Tue 30/1211:50SYD - ORD
1 stop19h 50mUnited Airlines
Tue 6/113:00ORD - SYD
2 stops27h 15mUnited Airlines
Deal found 15/11$2,371
Fri 5/1211:20SYD - ORD
1 stop21h 42mQantas Airways
Sat 20/1221:04ORD - SYD
1 stop42h 56mQantas Airways
Deal found 15/11$2,426
Thu 25/1217:45SYD - ORD
1 stop29h 20mAmerican Airlines
Fri 23/115:10ORD - SYD
1 stop24h 50mAmerican Airlines
Deal found 16/11$2,440
Thu 25/1211:20SYD - ORD
1 stop20h 12mUnited Airlines
Fri 23/114:12ORD - SYD
1 stop23h 48mUnited Airlines
Deal found 15/11$2,446
Thu 25/1214:15SYD - ORD
2 stops36h 10mDelta
Fri 23/109:52ORD - SYD
2 stops29h 38mDelta
Deal found 15/11$2,448
Wed 31/1217:45SYD - ORD
1 stop20h 24mAmerican Airlines
Fri 23/115:10ORD - SYD
1 stop24h 50mAmerican Airlines
Deal found 15/11$2,452
Fri 5/1221:40SYD - ORD
2 stops43h 33mMultiple Airlines
Tue 23/1219:44ORD - SYD
1 stop42h 41mMultiple Airlines
Deal found 16/11$2,470
Best flights from Sydney to O'Hare Intl
Discover carefully curated flight deals from Sydney to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 November 2025.
Mon 1/1209:55SYD - ORD
2 stops25h 55mAir New Zealand
Mon 8/1214:35ORD - SYD
2 stops26h 55mAir New Zealand
Deal found 16/11$1,706
Tue 3/211:20SYD - ORD
2 stops22h 48mAir Canada
Sat 7/208:45ORD - SYD
2 stops31h 50mAir Canada
Deal found 16/11$1,865
Sun 1/212:25SYD - ORD
1 stop35h 55mANA
Sat 9/520:00ORD - SYD
2 stops46h 25mANA
Deal found 14/11$1,904
Wed 25/216:10SYD - ORD
2 stops48h 46mMultiple Airlines
Wed 11/306:04ORD - SYD
3 stops47h 11mMultiple Airlines
Deal found 16/11$2,007
Mon 29/1211:20SYD - ORD
1 stop29h 20mQantas Airways
Sun 11/118:40ORD - SYD
1 stop21h 20mQantas Airways
Deal found 15/11$2,221
Tue 30/1211:50SYD - ORD
1 stop19h 50mUnited Airlines
Tue 6/106:47ORD - SYD
1 stop33h 28mUnited Airlines
Deal found 14/11$2,371
Thu 25/1217:45SYD - ORD
1 stop29h 20mAmerican Airlines
Fri 23/115:10ORD - SYD
1 stop24h 50mAmerican Airlines
Deal found 16/11$2,440
Sun 1/216:10SYD - ORD
3 stops44h 35mMultiple Airlines
Sat 9/518:50ORD - SYD
2 stops44h 05mMultiple Airlines
Deal found 14/11$2,172
Mon 29/1216:00SYD - ORD
1 stop39h 41mAir Canada
Sun 11/121:15ORD - SYD
2 stops43h 20mAir Canada
Deal found 15/11$2,356
Thu 25/1211:20SYD - ORD
1 stop20h 12mUnited Airlines
Fri 23/114:12ORD - SYD
1 stop23h 48mUnited Airlines
Deal found 15/11$2,446
Last-minute flights from Sydney to O'Hare Intl
Discover last-minute flight deals from Sydney to O'Hare Intl. Data last updated 17 November 2025 and is based on user searches.
Mon 1/1209:55SYD - ORD
2 stops25h 55mAir New Zealand
Mon 8/1214:35ORD - SYD
2 stops26h 55mAir New Zealand
Deal found 16/11$1,706
Fri 5/1211:20SYD - ORD
1 stop21h 42mQantas Airways
Sat 20/1221:04ORD - SYD
1 stop42h 56mQantas Airways
Deal found 15/11$2,426
Fri 5/1221:40SYD - ORD
2 stops43h 33mMultiple Airlines
Tue 23/1219:44ORD - SYD
1 stop42h 41mMultiple Airlines
Deal found 16/11$2,470
Thu 25/1217:45SYD - ORD
1 stop29h 20mAmerican Airlines
Fri 23/115:10ORD - SYD
1 stop24h 50mAmerican Airlines
Deal found 16/11$2,440
Thu 25/1211:20SYD - ORD
1 stop20h 12mUnited Airlines
Fri 23/114:12ORD - SYD
1 stop23h 48mUnited Airlines
Deal found 15/11$2,446
Thu 25/1214:15SYD - ORD
2 stops36h 10mDelta
Fri 23/109:52ORD - SYD
2 stops29h 38mDelta
Deal found 15/11$2,448
Mon 29/1211:20SYD - ORD
1 stop29h 20mQantas Airways
Sun 11/118:40ORD - SYD
1 stop21h 20mQantas Airways
Deal found 15/11$2,221
Mon 29/1216:00SYD - ORD
1 stop39h 41mAir Canada
Sun 11/121:15ORD - SYD
2 stops43h 20mAir Canada
Deal found 15/11$2,356
Tue 30/1211:50SYD - ORD
1 stop19h 50mUnited Airlines
Tue 6/113:00ORD - SYD
2 stops27h 15mUnited Airlines
Deal found 15/11$2,371
Wed 31/1217:45SYD - ORD
1 stop20h 24mAmerican Airlines
Fri 23/115:10ORD - SYD
1 stop24h 50mAmerican Airlines
Deal found 15/11$2,452
One-way flights from Sydney to O'Hare Intl
Search for one-way flight options from Sydney to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 17 November 2025.
Sun 8/313:55SYD - ORD
2 stops27h 03mAir New Zealand
Deal found 14/11$977
Thu 7/511:50SYD - ORD
2 stops25h 52mAir New Zealand
Deal found 16/11$985
Sat 2/509:55SYD - ORD
2 stops27h 47mAir New Zealand
Deal found 16/11$1,054
Sun 8/310:45SYD - ORD
3 stops41h 45mMultiple Airlines
Deal found 14/11$1,056
Fri 17/411:50SYD - ORD
2 stops24h 46mAir New Zealand
Deal found 16/11$1,057
Fri 17/410:15SYD - ORD
3 stops39h 55mMultiple Airlines
Deal found 16/11$1,095
Tue 10/211:20SYD - ORD
2 stops22h 48mAir Canada
Deal found 16/11$1,106
Sat 2/521:40SYD - ORD
3 stops31h 19mAlaska Airlines
Deal found 16/11$1,280
Cheapflights Fare Finder
Customise your flight search to find flights from Sydney to O'Hare Intl 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 647,157 searches. Data last updated 17 November 2025.
Use the filters below to find and compare flights from Sydney to Chicago O'Hare Intl Airport that are best for you.
Fly from
Sydney
Fly to
O'Hare Intl
Route
Depart
Return
Price
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Mon 1/12
09:55-18:50
2 stops25h 55m
Chicago O'Hare Intl
Mon 8/12
14:35-10:30
2 stops26h 55m
$1,706
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Tue 3/2
11:20-17:08
2 stops22h 48m
Chicago O'Hare Intl
Sat 7/2
08:45-09:35
2 stops31h 50m
$1,865
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Sun 1/2
12:25-07:20
1 stop35h 55m
Chicago O'Hare Intl
Sat 9/5
20:00-09:25
2 stops46h 25m
$1,904
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Wed 25/2
16:10-23:56
2 stops48h 46m
Chicago O'Hare Intl
Wed 11/3
06:04-21:15
3 stops47h 11m
$2,007
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Sun 1/2
16:10-19:45
3 stops44h 35m
Chicago O'Hare Intl
Sat 9/5
18:50-05:55
2 stops44h 05m
$2,172
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Mon 29/12
11:20-23:40
1 stop29h 20m
Chicago O'Hare Intl
Sun 11/1
18:40-09:00
1 stop21h 20m
$2,221
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Mon 29/12
16:00-14:41
1 stop39h 41m
Chicago O'Hare Intl
Sun 11/1
21:15-09:35
2 stops43h 20m
$2,356
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Tue 30/12
11:50-14:40
1 stop19h 50m
Chicago O'Hare Intl
Tue 6/1
06:47-09:15
1 stop33h 28m
$2,371
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Thu 25/12
17:45-06:05
1 stop29h 20m
Chicago O'Hare Intl
Fri 23/1
15:10-09:00
1 stop24h 50m
$2,440
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Thu 25/12
11:20-14:32
1 stop20h 12m
Chicago O'Hare Intl
Fri 23/1
14:12-07:00
1 stop23h 48m
$2,446
Flights are sorted by cheapest return flights first.
Deals found on 16/11
Showing 1-10 of 17 results
1
2
Best time to book a flight from Sydney to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Sydney with our price prediction graph.
Estimated return 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 Sydney to Chicago O'Hare Intl Airport
Prices
More
How far ahead should I book a flight from Sydney to Chicago O'Hare Intl Airport?
Use this chart to determine the optimal time to book a return flight from Sydney to O'Hare Intl. Price data was last updated on 14 November 2025.
The best time to book flights from Sydney to Chicago O'Hare Intl Airport is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Sydney to Chicago O'Hare Intl Airport?
Currently, September is the cheapest month in which you can book a flight from Sydney to Chicago O'Hare Intl Airport (average of $948). Flying from Sydney to Chicago O'Hare Intl Airport in December is currently the most expensive (average of $1,602). 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 SYD to ORD?
Find hourly flight availability from Sydney to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 November 2025.
It’s optimal to fly from Sydney to Chicago O'Hare Intl Airport in the afternoon. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight in the morning.
What is the cheapest day to fly from Sydney to Chicago O'Hare Intl Airport?
Use this chart to determine the cheapest time to fly return from Sydney to O'Hare Intl. Price data was last updated on 16 December 2024.
Travellers seeking maximum savings on their Sydney to Chicago O'Hare Intl Airport flight should consider departing on Monday at midday when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How much does it cost for a return flight from Sydney to Chicago O'Hare Intl Airport?
What’s the top stopover airport for flights from Sydney to Chicago O'Hare Intl Airport?
Share of one-stop return flights from Sydney to Chicago O'Hare Intl Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Los Angeles (LAX) – chosen by Cheapflights users on 74% of one-stop itineraries from Sydney to Chicago O'Hare Intl Airport on Cheapflights.
What’s the fastest stopover option from Sydney to Chicago O'Hare Intl Airport?
Shortest average travel time for one-stop one-way flights from Sydney to Chicago O'Hare Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Dallas (DFW) have the shortest average one-way travel time for one-stop routes: 20h 22m.
What’s the fastest stopover option from Sydney to Chicago O'Hare Intl Airport?
Shortest average travel time for one-stop one-way flights from Sydney to Chicago O'Hare Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Dallas (DFW) have the shortest average one-way travel time for one-stop routes: 20h 22m.
Which airport typically offers the quickest stopover for flights from Sydney to Chicago O'Hare Intl Airport?
Average stopover duration for one-stop one-way flights from Sydney to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 2h 25m.
Reviews of airlines servicing O'Hare Intl
Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 17 November 2025.
Check out reviews from past customers who have flown with Air New Zealand, Qantas Airways, andUnited Airlines from Sydney to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
Related info for your journey
Find useful and relevant information for your journey from Sydney to O'Hare Intl. 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 from for flights from Sydney to Chicago O'Hare Intl?
For a flight from Sydney to Chicago O'Hare Intl, you will be flying from Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre of the city. Kingsford Smith is the only Sydney airport and it handles 0 outbound flights to Chicago O'Hare Intl per day. 6 airlines have flights to Chicago O'Hare Intl from Sydney Kingsford Smith on a regular basis.
How long is the flight from Sydney to Chicago O'Hare Intl Airport?
There are many flights that can get you from Sydney to Chicago O'Hare Intl Airport in 22h 48m. Fly via Air New Zealand, Air Canada, or ANA to get the fastest option. Airlines will cover a distance of 14851 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Sydney to Chicago O'Hare Intl Airport round-trip?
Qantas Airways, at $1,006, was found to be the cheapest airline from Sydney to Chicago O'Hare Intl Airport.Alternate airlines to your destination round-trip include American Airlines and Air Canada. These flights start at 32% lower than the current average price 3 months from now.
Can I find deals for business class flights from Sydney to O'Hare Intl?
Yes. Cheapflights offers flight deals from Sydney to O'Hare Intl 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 Sydney to Chicago O'Hare Intl Airport?
Currently, September is the cheapest month in which you can book a flight from Sydney to Chicago O'Hare Intl Airport (average of $948). Flying from Sydney to Chicago O'Hare Intl Airport in December is currently the most expensive (average of $1,602). 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.
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 17 November 2025.
Discover the top 6 airlines that operate flights from Sydney to O'Hare Intl. 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 647,157 searches. Data last updated 17 November 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Sydney to O'Hare Intl?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to O'Hare Intl from Sydney today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Sydney to O'Hare Intl?
Millions of users choose and trust Cheapflights to book the best flight deals from Sydney to O'Hare Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Sydney to O'Hare Intl with no change fees?
Certainly. Search results for flights to O'Hare Intl from Sydney shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Sydney to O'Hare Intl become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.