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Cheap flights from Sydney to Chicago O'Hare Intl Airport from $907

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
29 Jan — 5 Feb1
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 30 December 2025.

Tue 30/1211:50SYD - ORD
1 stop19h 50mUnited Airlines
Thu 5/314:05ORD - SYD
2 stops26h 10mUnited Airlines
Deal found 28/12$1,808
Tue 30/1211:50SYD - ORD
1 stop25h 05mLufthansa
Thu 5/316:20ORD - SYD
1 stop23h 55mLufthansa
Deal found 28/12$1,827
Tue 30/1206:20SYD - ORD
2 stops25h 21mMultiple Airlines
Thu 5/305:15ORD - SYD
3 stops35h 20mMultiple Airlines
Deal found 28/12$2,930

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 30 December 2025.

Round-trip from

$1,517

One-way from

$907

Popular in

December

Cheapest in

February

Average price

$2,136
Air Canada
  • Air Canada
  • 5/2-18/2
  • 4 total stops
  • 53h 18m total
  • Sydney to Chicago
Search Deals
15/1
  • 15/1
  • 3 total stops
  • 49h 36m total
  • Sydney to Chicago
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($542 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($97 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 30 December 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 19/1

16:00-17:03

2 stops42h 03m

Chicago O'Hare Intl

Tue 3/2

15:35-09:35

1 stop25h 00m

$1,538

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 19/1

11:20-14:41

1 stop20h 21m

Chicago O'Hare Intl

Mon 2/2

15:35-09:35

1 stop25h 00m

$1,574

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 18/2

11:20-11:06

2 stops40h 46m

Chicago O'Hare Intl

Sun 22/2

20:40-09:35

2 stops43h 55m

$1,654

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 3/5

11:55-21:08

2 stops24h 13m

Chicago O'Hare Intl

Wed 6/5

16:00-08:45

2 stops25h 45m

$1,681

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 17/1

11:50-14:40

1 stop19h 50m

Chicago O'Hare Intl

Sun 1/2

14:40-06:20

1 stop22h 40m

$1,808

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 26/1

11:20-14:41

1 stop20h 21m

Chicago O'Hare Intl

Thu 29/1

15:35-09:35

1 stop25h 00m

$1,871

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 16/5

11:55-21:31

2 stops24h 36m

Chicago O'Hare Intl

Sat 6/6

16:40-08:45

2 stops25h 05m

$1,989

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 15/1

12:35-21:11

3 stops49h 36m

$907

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 16/1

12:35-12:08

3 stops40h 33m

$920

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 27/4

11:55-00:45

2 stops27h 50m

$976

Flights are sorted by cheapest return flights first.

Deals found on 28/12

Showing 1-10 of 18 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 26 December 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 $925). Flying from Sydney to Chicago O'Hare Intl Airport in December is currently the most expensive (average of $1,531). 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.

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 30 December 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
562 reviews
Check prices

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Air New Zealand
8.0
Very Good
562 reviews
Air New Zealand
8.0
Very Good
562 reviews
Check prices

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Qantas Airways
7.5
Good
957 reviews
Air New Zealand
8.0
Very Good
562 reviews
Check prices

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
United Airlines
7.4
Good
9,124 reviews
Air New Zealand
8.0
Very Good
562 reviews
Check prices

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
American Airlines
7.2
Good
11,074 reviews
Air New Zealand
8.0
Very Good
562 reviews
Check prices

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Air Canada
7.1
Good
10,571 reviews
Air New Zealand
8.0
Very Good
562 reviews
Check prices

Food

7.4

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

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 42h 03m. 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 $977, 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 31% 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 $925). Flying from Sydney to Chicago O'Hare Intl Airport in December is currently the most expensive (average of $1,531). 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 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 30 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$978Average$1,112FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,163Average$1,212FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,166Average$1,621FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,411Average$1,576FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
United AirlinesCheapest$1,475Average$2,269FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
ANACheapest$1,567Average$1,695FlexibilityNo cancel feeOn-time80%
Search ANA flights
Virgin AustraliaCheapest$1,719Average$2,787FlexibilityNo cancel feeOn-time80%
Search Virgin Australia 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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