Cheap flights from Sydney to Chicago O'Hare Intl Airport from $720
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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
6 Sep — 13 Sep1
Return
1 adult
Economy
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 1 September 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 1 September 2025.
Thu 16/1019:30SYD - ORD
2 stops41h 15mMultiple Airlines
Tue 21/1000:30ORD - SYD
2 stops39h 25mMultiple Airlines
Deal found 30/8$1,947
Thu 25/1216:00SYD - ORD
2 stops36h 18mAir Canada
Fri 23/115:40ORD - SYD
1 stop24h 55mAir Canada
Deal found 30/8$2,000
Sun 16/1111:20SYD - ORD
2 stops25h 40mAir Canada
Thu 20/1107:15ORD - SYD
3 stops33h 20mAir Canada
Deal found 31/8$2,075
Mon 8/909:20SYD - ORD
3 stops27h 12mMultiple Airlines
Tue 23/905:05ORD - SYD
3 stops35h 15mMultiple Airlines
Deal found 30/8$2,121
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 1 September 2025.
Thu 16/1019:30SYD - ORD
2 stops41h 15mMultiple Airlines
Tue 21/1000:30ORD - SYD
2 stops39h 25mMultiple Airlines
Deal found 30/8$1,947
Sun 16/1111:20SYD - ORD
2 stops25h 40mAir Canada
Thu 20/1107:15ORD - SYD
3 stops33h 20mAir Canada
Deal found 31/8$2,075
Mon 8/908:55SYD - ORD
1 stop39h 10mJapan Airlines
Mon 22/901:05ORD - SYD
1 stop38h 15mJapan Airlines
Deal found 30/8$2,190
Mon 8/909:20SYD - ORD
3 stops27h 12mMultiple Airlines
Tue 23/905:05ORD - SYD
3 stops35h 15mMultiple Airlines
Deal found 30/8$2,121
Tue 14/1006:00SYD - ORD
3 stops44h 08mMultiple Airlines
Tue 21/1005:05ORD - SYD
3 stops35h 15mMultiple Airlines
Deal found 30/8$2,222
Sat 27/917:30SYD - ORD
3 stops39h 44mMultiple Airlines
Sat 4/1020:56ORD - SYD
3 stops44h 04mMultiple Airlines
Deal found 30/8$2,225
Last-minute flights from Sydney to O'Hare Intl
Discover last-minute flight deals from Sydney to O'Hare Intl. Data last updated 1 September 2025 and is based on user searches.
Mon 8/909:20SYD - ORD
3 stops27h 12mMultiple Airlines
Tue 23/905:05ORD - SYD
3 stops35h 15mMultiple Airlines
Deal found 30/8$2,121
Mon 8/908:55SYD - ORD
1 stop39h 10mJapan Airlines
Mon 22/901:05ORD - SYD
1 stop38h 15mJapan Airlines
Deal found 30/8$2,190
Wed 10/910:15SYD - ORD
3 stops46h 59mMultiple Airlines
Mon 3/1106:35ORD - SYD
3 stops36h 55mMultiple Airlines
Deal found 31/8$2,359
Sun 21/909:20SYD - ORD
1 stop20h 40mAir Canada
Wed 10/1215:40ORD - SYD
1 stop24h 55mAir Canada
Deal found 31/8$1,577
Sat 27/917:30SYD - ORD
3 stops39h 44mMultiple Airlines
Sat 4/1020:56ORD - SYD
3 stops44h 04mMultiple Airlines
Deal found 30/8$2,225
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 1 September 2025.
Wed 15/1017:20SYD - ORD
2 stops27h 41mMultiple Airlines
Deal found 30/8$720
Fri 5/916:20SYD - ORD
3 stops45h 53mMultiple Airlines
Deal found 30/8$876
Wed 8/1016:40SYD - ORD
1 stop32h 05mEtihad Airways
Deal found 31/8$957
Wed 10/1220:00SYD - ORD
3 stops44h 50mMultiple Airlines
Deal found 30/8$980
Thu 11/1206:00SYD - ORD
3 stops34h 50mMultiple Airlines
Deal found 30/8$983
Mon 15/917:45SYD - ORD
2 stops42h 43mMultiple Airlines
Deal found 31/8$998
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 1 September 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
Thu 16/10
19:30-20:45
2 stops41h 15m
Chicago O'Hare Intl
Tue 21/10
00:30-07:55
2 stops39h 25m
$1,947
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Sun 16/11
11:20-20:00
2 stops25h 40m
Chicago O'Hare Intl
Thu 20/11
07:15-09:35
3 stops33h 20m
$2,075
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Mon 8/9
09:20-21:32
3 stops27h 12m
Chicago O'Hare Intl
Tue 23/9
05:05-07:20
3 stops35h 15m
$2,121
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Mon 8/9
08:55-09:05
1 stop39h 10m
Chicago O'Hare Intl
Mon 22/9
01:05-06:20
1 stop38h 15m
$2,190
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Tue 14/10
06:00-10:08
3 stops44h 08m
Chicago O'Hare Intl
Tue 21/10
05:05-08:20
3 stops35h 15m
$2,222
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Sat 27/9
17:30-18:14
3 stops39h 44m
Chicago O'Hare Intl
Sat 4/10
20:56-09:00
3 stops44h 04m
$2,225
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Wed 15/10
17:20-05:01
2 stops27h 41m
$720
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Fri 5/9
16:20-23:13
3 stops45h 53m
$876
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Wed 8/10
16:40-08:45
1 stop32h 05m
$957
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Wed 15/10
16:40-08:45
1 stop32h 05m
$1,018
Flights are sorted by cheapest return flights first.
Deals found on 30/8
Showing 1-10 of 13 results
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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 29 August 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 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 1 September 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 12% 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 Thursday afternoons when fares are most often at their lowest. Thursday at midday flights should be avoided if possible as fares are typically the most expensive at this time.
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 Houston (IAH) have the shortest average one-way travel time for one-stop routes: 19h 57m.
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 Houston (IAH) have the shortest average one-way travel time for one-stop routes: 19h 57m.
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 Houston (IAH) offer the fastest connection on this route, with an average stopover time of 1h 33m.
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 1 September 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.
Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
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. 7 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 25h 40m. Fly via Air Canada to get the fastest option. Airlines will cover a distance of 14851 km.
What are the cheapest airlines flying from Sydney to Chicago O'Hare Intl Airport round-trip?
Qantas Airways, at $1,007, 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 35% 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.
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 1 September 2025.
Discover the top 7 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 1 September 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!
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