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Cheap flights from Sydney to Chicago O'Hare Intl Airport from $772

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Chicago O'Hare Intl are usually found in February or May, booked 28 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 13 June 2025.

Round-trip from

$1,606

One-way from

$772

Popular in

December

Cheapest in

February

Average price

$1,606
14/8-4/9
  • 14/8-4/9
  • 4 total stops
  • 63h 26m total
  • Sydney to Chicago
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23/8
  • 23/8
  • 2 total stops
  • 24h 21m total
  • Sydney to Chicago
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Highest demand for flights based on searches. 22% potential increase in price ($681 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease ($156 potential savings vs. average return price).
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Average for round-trip flights in June 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 13 June 2025.

Thu 14/813:15SYD - ORD
2 stops24h 31mMultiple Airlines
Thu 4/906:20ORD - SYD
2 stops38h 55mMultiple Airlines
Deal found 12/6$1,606
Mon 21/709:25SYD - ORD
2 stops25h 02mDelta
Sun 17/815:50ORD - SYD
2 stops23h 45mDelta
Deal found 12/6$1,678
Fri 13/620:55SYD - ORD
1 stop26h 45mANA
Thu 31/709:05ORD - SYD
2 stops43h 10mANA
Deal found 12/6$1,686
Mon 4/809:10SYD - ORD
1 stop23h 32mAmerican Airlines
Mon 25/806:00ORD - SYD
1 stop34h 05mAmerican Airlines
Deal found 12/6$1,733
Wed 23/708:55SYD - ORD
2 stops29h 48mJapan Airlines
Tue 19/801:30ORD - SYD
1 stop37h 50mJapan Airlines
Deal found 12/6$1,868
Thu 17/709:10SYD - ORD
1 stop21h 34mBritish Airways
Mon 28/722:17ORD - SYD
1 stop41h 48mBritish Airways
Deal found 9/6$1,891
Wed 8/1010:20SYD - ORD
2 stops27h 47mAir Canada
Thu 16/1008:55ORD - SYD
2 stops31h 25mAir Canada
Deal found 10/6$1,957
Thu 12/607:40SYD - ORD
1 stop45h 45mCathay Pacific
Wed 25/616:00ORD - SYD
1 stop27h 50mCathay Pacific
Deal found 11/6$2,109
Thu 25/1211:20SYD - ORD
1 stop26h 02mUnited Airlines
Fri 23/112:45ORD - SYD
1 stop24h 35mUnited Airlines
Deal found 10/6$2,165
Sat 19/721:40SYD - ORD
2 stops47h 00mAlaska Airlines
Wed 30/706:00ORD - SYD
2 stops46h 45mAlaska Airlines
Deal found 11/6$2,244

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 13 June 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 14/8

13:15-22:46

2 stops24h 31m

Chicago O'Hare Intl

Thu 4/9

06:20-12:15

2 stops38h 55m

$1,606

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 21/7

09:25-19:27

2 stops25h 02m

Chicago O'Hare Intl

Sun 17/8

15:50-06:35

2 stops23h 45m

$1,678

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 4/8

20:55-08:40

1 stop26h 45m

Chicago O'Hare Intl

Mon 25/8

20:20-19:15

2 stops31h 55m

$1,712

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 4/8

09:10-17:42

1 stop23h 32m

Chicago O'Hare Intl

Mon 25/8

06:00-07:05

1 stop34h 05m

$1,733

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 23/7

08:55-23:43

2 stops29h 48m

Chicago O'Hare Intl

Tue 19/8

01:30-06:20

1 stop37h 50m

$1,868

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 31/7

09:20-07:59

2 stops37h 39m

Chicago O'Hare Intl

Thu 7/8

08:45-07:20

2 stops31h 35m

$1,970

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 19/7

14:05-14:25

1 stop39h 20m

Chicago O'Hare Intl

Wed 30/7

16:00-10:50

1 stop27h 50m

$2,088

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 19/7

21:40-05:40

2 stops47h 00m

Chicago O'Hare Intl

Wed 30/7

06:00-19:45

2 stops46h 45m

$2,244

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 25/6

09:30-04:51

1 stop34h 21m

Chicago O'Hare Intl

Mon 4/8

07:10-07:00

1 stop32h 50m

$2,541

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 23/8

13:45-23:06

2 stops24h 21m

$772

Flights are sorted by cheapest return flights first.

Deals found on 11/6

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

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 9 June 2025.

The best time to book flights from Sydney to Chicago O'Hare Intl Airport is 15 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 13 June 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.

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 13 June 2025.
Get a feel of what it's like to fly with Air Tahiti Nui, Japan Airlines and ANA from Sydney to Chicago by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very Good
64 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Japan Airlines
8.3
Very Good
1,490 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
ANA
8.3
Very Good
882 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Alaska Airlines
8.0
Very Good
10,000 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Delta
8.0
Very Good
7,950 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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.

  • What are the cheapest airlines flying from Sydney to Chicago O'Hare Intl Airport round-trip?

    Delta, at $1,678, was found to be the cheapest airline from Sydney to Chicago O'Hare Intl Airport.Alternate airlines to your destination round-trip include ANA and American Airlines.

  • What are the cheapest airlines to fly from Sydney to Chicago O'Hare Intl Airport one-way?

    $1,174 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Air Tahiti Nui and Cathay Pacific, with prices starting from $1,795 and $5,051, respectively.

  • 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.

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Alternative routes for Sydney to O'Hare Intl

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Top 6 airlines flying from Sydney to O'Hare Intl

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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,016Average$1,277FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,197Average$1,602FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,277Average$1,717FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
ANACheapest$1,612Average$1,810FlexibilityNo cancel feeOn-time80%
Search ANA flights
United AirlinesCheapest$1,695Average$2,469FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AustraliaCheapest$1,769Average$2,797FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights

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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.

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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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