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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
1 adult

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.

Round-trip from

$1,577

One-way from

$720

Popular in

December

Cheapest in

February

Average price

$1,759
Air Canada
  • Air Canada
  • 21/9-10/12
  • 2 total stops
  • 45h 35m total
  • Sydney to Chicago
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15/10
  • 15/10
  • 2 total stops
  • 27h 41m total
  • Sydney to Chicago
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($631 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease ($143 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Sydney to O'Hare Intl

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 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

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
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?

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.

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.
Air New Zealand
8.0
Very Good
505 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

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.
Air New Zealand
8.0
Very Good
505 reviews
Air New Zealand
8.0
Very Good
505 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

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.
Qantas Airways
7.5
Good
904 reviews
Air New Zealand
8.0
Very Good
505 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

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.
United Airlines
7.4
Good
8,942 reviews
Air New Zealand
8.0
Very Good
505 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

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.
American Airlines
7.2
Good
10,000 reviews
Air New Zealand
8.0
Very Good
505 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

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.
Air Canada
7.1
Good
10,000 reviews
Air New Zealand
8.0
Very Good
505 reviews
Check prices

Comfort

8.0

Entertainment

7.4

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

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 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.

See more FAQs

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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 7 airlines flying from Sydney to O'Hare Intl

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.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,007Average$1,151FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,192Average$1,242FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,263Average$1,705FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,557Average$1,616FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
ANACheapest$1,605Average$1,793FlexibilityNo cancel feeOn-time80%
Search ANA flights
United AirlinesCheapest$1,658Average$2,449FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AustraliaCheapest$1,761Average$2,855FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights

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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.

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