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Cheap flights from Sydney to Chicago O'Hare Intl Airport from $612

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
22 Aug — 29 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to O'Hare Intl
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 23 July 2026.

Sun 6/913:15
SYD
-
ORD
2 stops31h 44m
Multiple Airlines
Sun 13/913:02
ORD
-
SYD
3 stops31h 48m
Multiple Airlines
Deal found 22/7$1,415
Tue 4/813:15
SYD
-
ORD
2 stops32h 02m
Multiple Airlines
Tue 11/809:20
ORD
-
SYD
3 stops46h 05m
Multiple Airlines
Deal found 19/7$1,457
Wed 5/813:15
SYD
-
ORD
2 stops32h 02m
Multiple Airlines
Wed 19/809:20
ORD
-
SYD
3 stops35h 30m
Multiple Airlines
Deal found 21/7$1,479
Thu 3/913:15
SYD
-
ORD
2 stops31h 44m
Multiple Airlines
Thu 10/909:26
ORD
-
SYD
3 stops35h 24m
Multiple Airlines
Deal found 20/7$1,492
Tue 25/813:15
SYD
-
ORD
2 stops32h 02m
Multiple Airlines
Wed 30/906:05
ORD
-
SYD
3 stops38h 45m
Multiple Airlines
Deal found 22/7$1,525
Thu 6/813:15
SYD
-
ORD
2 stops32h 02m
Multiple Airlines
Wed 19/809:20
ORD
-
SYD
3 stops35h 30m
Multiple Airlines
Deal found 20/7$1,540
Thu 6/813:15
SYD
-
ORD
3 stops31h 22m
Multiple Airlines
Sun 23/807:05
ORD
-
SYD
3 stops48h 20m
Multiple Airlines
Deal found 21/7$1,582
Thu 27/813:15
SYD
-
ORD
2 stops31h 44m
Multiple Airlines
Mon 31/821:20
ORD
-
SYD
1 stop43h 10m
Multiple Airlines
Deal found 22/7$1,601
Wed 18/1116:50
SYD
-
ORD
1 stop39h 10m
Etihad Airways
Wed 25/1120:20
ORD
-
SYD
1 stop28h 25m
Etihad Airways
Deal found 19/7$1,647
Tue 28/709:30
SYD
-
ORD
2 stops37h 28m
United Airlines
Wed 29/716:30
ORD
-
SYD
1 stop23h 25m
United Airlines
Deal found 23/7$1,648

Find 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 23 July 2026.

Round-trip from

$1,415

One-way from

$612

Popular in

January

Cheapest in

September

Average price

$2,005
6/9-13/9
  • 6/9-13/9
  • 5 total stops
  • 63h 32m total
  • Sydney to Chicago
Search Deals
7/9
  • 7/9
  • 2 total stops
  • 32h 02m total
  • Sydney to Chicago
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($997 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($296 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 23 July 2026.
Use the filters below to find and compare flights from Sydney to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 6/8

06:25-23:30

2 stops32h 05m

Chicago O'Hare Intl

Sun 23/8

10:30-09:45

2 stops32h 15m

$1,694

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 20/8

06:00-17:47

2 stops26h 47m

Chicago O'Hare Intl

Sat 29/8

17:16-10:45

2 stops26h 29m

$1,997

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 9/9

09:30-09:20

2 stops38h 50m

Chicago O'Hare Intl

Thu 10/9

15:35-06:55

1 stop24h 20m

$2,012

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 3/8

17:50-06:17

1 stop27h 27m

Chicago O'Hare Intl

Mon 17/8

21:13-07:30

1 stop43h 17m

$2,035

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 10/9

20:45-13:22

2 stops31h 37m

Chicago O'Hare Intl

Wed 23/9

19:00-18:50

2 stops32h 50m

$2,060

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 9/8

20:45-13:21

2 stops31h 36m

Chicago O'Hare Intl

Wed 12/8

20:20-18:50

2 stops31h 30m

$2,083
Fastest return journey

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 18/11

14:05-21:30

2 stops24h 25m

Chicago O'Hare Intl

Wed 25/11

17:53-09:00

1 stop22h 07m

$2,108

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 1/10

10:10-13:55

1 stop42h 45m

Chicago O'Hare Intl

Fri 9/10

16:15-20:45

1 stop36h 30m

$2,158

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 1/10

21:05-09:40

2 stops51h 35m

Chicago O'Hare Intl

Fri 9/10

11:25-07:05

3 stops51h 40m

$2,162

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 14/10

08:00-14:43

2 stops22h 43m

Chicago O'Hare Intl

Wed 21/10

15:40-08:20

1 stop24h 40m

$2,186

Flights are sorted by cheapest return flights first.

Deals found on 23/7

Showing 1-10 of 20 resultsSorted by cheapest first
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

How far ahead should I book a flight from Sydney to Chicago O'Hare Intl Airport?

The best time to book flights from Sydney to Chicago O'Hare Intl Airport is 25 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 $1,341). Flying from Sydney to Chicago O'Hare Intl Airport in January is currently the most expensive (average of $4,222). 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.

How much does it cost for a return flight from Sydney to Chicago O'Hare Intl Airport?

Airfare is below average for this route at the moment.

Sydney to Chicago O'Hare Intl Airport flights typically cost between $1,640 and $2,407 in September.
The cheapest return price found within the last 5 days was $1,415 on Multiple Airlines (6 Sept–13 Sept).

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 23 July 2026.
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.
Air New Zealand
8.0
Very Good
654 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.5

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.
Air New Zealand
8.0
Very Good
654 reviews
Air New Zealand
8.0
Very Good
654 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.5

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.
Qantas Airways
7.5
Good
1,067 reviews
Air New Zealand
8.0
Very Good
654 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.5

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.
United Airlines
7.4
Good
10,026 reviews
Air New Zealand
8.0
Very Good
654 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.5

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.
American Airlines
7.1
Good
11,843 reviews
Air New Zealand
8.0
Very Good
654 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.5

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.
Air Canada
7.1
Good
11,377 reviews
Air New Zealand
8.0
Very Good
654 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.5

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Viren,June 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.

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. 5 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 32h 05m. Fly via Qantas Airways or United Airlines 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?

    Air Canada, at $1,084, was found to be the cheapest airline from Sydney to Chicago O'Hare Intl Airport.Alternate airlines to your destination round-trip include Qantas Airways and American Airlines. These flights start at 44% lower than the current average price 3 months from now.

  • Can I find deals for flights from Sydney to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Sydney to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sydney to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to O'Hare Intl.

  • 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 $1,341). Flying from Sydney to Chicago O'Hare Intl Airport in January is currently the most expensive (average of $4,222). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sydney to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Midway flights

Top 5 airlines flying from Sydney to O'Hare Intl

Discover the top 5 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 23 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,084Average$1,696FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,263Average$1,738FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,264Average$1,636FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$1,415Average$1,837FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air New ZealandCheapest$1,424Average$1,520FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights

Fly with Cheapflights

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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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