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

According to our current data, Qantas Airways ($631), and American Airlines ($884) offers the cheapest pricing from Sydney to Chicago O'Hare Intl Airport. These flights start at 38% lower than the current average price 3 months from now.

What is the cheapest day to fly from Sydney to Chicago O'Hare Intl Airport?

Travelers seeking maximum savings on their Sydney to Chicago O'Hare Intl Airport flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

What is the cheapest day to fly round-trip from Sydney to Chicago O'Hare Intl Airport?

Leaving on a Sunday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 82% on the overall cost on flights from Sydney to Chicago O'Hare Intl Airport.

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

Find a great deal and save up to 49% by booking at least 44 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Sydney to Chicago O'Hare Intl Airport within the next two weeks, with the cheapest ticket starting at $1,115.

What is the cheapest month to fly from Sydney to Chicago O'Hare Intl Airport?

Flights from Sydney to Chicago O'Hare Intl Airport lean towards being more expensive in December. Prices are generally better when you fly from Sydney to Chicago O'Hare Intl Airport in February, with the cheapest ticket starting at $640.

What airport do you fly from for flights from Sydney to Chicago O'Hare Intl?

If you book a flight to Chicago O'Hare Intl from Sydney, you will be flying from Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 4.6 mi from the center of Sydney. There are 0 flights from Kingsford Smith to Chicago O'Hare Intl per day from 2 different airlines.

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 vacation 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.

$384+ Flights from Sydney to Chicago O'Hare Intl Airport

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1. Tell us where you want to go

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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 Tuesday and return on a Saturday

Cheap flight deals from Sydney to O'Hare Intl

Round-trip from	$1,003 (Trip.com)
One-way from	$404 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$1,056

From Sydney Kingsford Smith to Chicago O'Hare Intl

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One-way flight from Sydney Kingsford Smith to Chicago O'Hare Intl

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Highest demand for flights based on searches. 21% potential increase in price ($275 potential increase over avg. RT price).

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Cheapest flight prices on average. 6% potential price decrease ($64 potential savings vs. average RT price).

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Average for round-trip flights in August 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 August 14, 2025.

Sat 8/309:25 amSYD - ORD

1 stop28h 41mMultiple Airlines

Sat 9/67:00 amORD - SYD

1 stop32h 35mMultiple Airlines

Deal found 8/13

$1,006

Wed 8/279:30 amSYD - ORD

2 stops34h 20mMultiple Airlines

Wed 9/37:05 amORD - SYD

2 stops32h 50mMultiple Airlines

Deal found 8/12

$1,041

Fri 8/221:15 pmSYD - ORD

2 stops24h 56mMultiple Airlines

Fri 8/296:20 amORD - SYD

2 stops38h 25mMultiple Airlines

Deal found 8/12

$1,060

Sat 8/231:45 pmSYD - ORD

2 stops24h 21mMultiple Airlines

Sat 8/306:20 amORD - SYD

2 stops38h 25mMultiple Airlines

Deal found 8/13

$1,076

Sat 8/3011:50 amSYD - ORD

2 stops26h 24mAir New Zealand

Sat 9/64:10 pmORD - SYD

2 stops27h 25mAir New Zealand

Deal found 8/13

$1,090

Wed 10/1510:20 amSYD - ORD

1 stop20h 40mAir Canada

Tue 10/213:45 pmORD - SYD

1 stop24h 35mAir Canada

Deal found 8/12

$1,109

Mon 8/2511:50 amSYD - ORD

2 stops32h 11mANA

Tue 9/95:45 pmORD - SYD

1 stop24h 40mANA

Deal found 8/13

$1,114

Sun 8/249:10 amSYD - ORD

2 stops27h 09mBritish Airways

Tue 9/96:49 pmORD - SYD

1 stop21h 16mBritish Airways

Deal found 8/13

$1,122

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 layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Sat 8/309:25 amSYD - ORD

1 stop28h 41mMultiple Airlines

Sat 9/67:00 amORD - SYD

1 stop32h 35mMultiple Airlines

Deal found 8/13

$1,006

Sat 8/3011:50 amSYD - ORD

2 stops26h 24mAir New Zealand

Sat 9/64:10 pmORD - SYD

2 stops27h 25mAir New Zealand

Deal found 8/13

$1,090

Wed 10/1510:20 amSYD - ORD

2 stops25h 51mAir Canada

Tue 10/213:45 pmORD - SYD

1 stop24h 35mAir Canada

Deal found 8/12

$1,109

Mon 8/2511:50 amSYD - ORD

2 stops32h 11mANA

Tue 9/95:45 pmORD - SYD

1 stop24h 40mANA

Deal found 8/13

$1,114

Sun 8/249:10 amSYD - ORD

2 stops27h 09mBritish Airways

Tue 9/96:49 pmORD - SYD

1 stop21h 16mBritish Airways

Deal found 8/13

$1,122

Wed 8/279:30 amSYD - ORD

2 stops34h 20mMultiple Airlines

Wed 9/37:05 amORD - SYD

2 stops32h 50mMultiple Airlines

Deal found 8/12

$1,041

Mon 8/259:10 amSYD - ORD

1 stop26h 53mBritish Airways

Tue 9/99:10 amORD - SYD

1 stop30h 55mBritish Airways

Deal found 8/13

$1,125

Last-minute flights from Sydney to O'Hare Intl
Discover last-minute flight deals from Sydney to O'Hare Intl. Data last updated August 14, 2025 and is based on user searches.

Fri 8/221:15 pmSYD - ORD

2 stops24h 56mMultiple Airlines

Fri 8/296:20 amORD - SYD

2 stops38h 25mMultiple Airlines

Deal found 8/12

$1,060

Fri 8/229:30 amSYD - ORD

2 stops22h 35mUnited Airlines

Fri 8/294:30 pmORD - SYD

1 stop23h 25mUnited Airlines

Deal found 8/12

$1,147

Sat 8/231:45 pmSYD - ORD

2 stops24h 21mMultiple Airlines

Sat 8/306:20 amORD - SYD

2 stops38h 25mMultiple Airlines

Deal found 8/13

$1,076

Sat 8/239:10 amSYD - ORD

2 stops25h 02mAmerican Airlines

Sat 8/307:03 pmORD - SYD

1 stop21h 02mAmerican Airlines

Deal found 8/13

$1,135

Sat 8/239:10 amSYD - ORD

1 stop21h 45mAmerican Airlines

Mon 9/17:03 pmORD - SYD

1 stop21h 02mAmerican Airlines

Deal found 8/11

$1,140

Sat 8/239:30 amSYD - ORD

2 stops22h 35mUnited Airlines

Mon 9/11:58 pmORD - SYD

2 stops26h 02mUnited Airlines

Deal found 8/11

$1,148

Sun 8/249:10 amSYD - ORD

2 stops27h 09mBritish Airways

Tue 9/96:49 pmORD - SYD

1 stop21h 16mBritish Airways

Deal found 8/13

$1,122

Sun 8/248:55 amSYD - ORD

2 stops50h 53mJapan Airlines

Mon 9/81:05 amORD - SYD

1 stop38h 15mJapan Airlines

Deal found 8/13

$1,509

Mon 8/2511:50 amSYD - ORD

2 stops32h 11mANA

Tue 9/95:45 pmORD - SYD

1 stop24h 40mANA

Deal found 8/13

$1,114

Wed 8/279:30 amSYD - ORD

2 stops34h 20mMultiple Airlines

Wed 9/37:05 amORD - SYD

2 stops32h 50mMultiple Airlines

Deal found 8/12

$1,041

Sat 8/309:25 amSYD - ORD

1 stop28h 41mMultiple Airlines

Sat 9/67:00 amORD - SYD

1 stop32h 35mMultiple Airlines

Deal found 8/13

$1,006

Sat 8/3011:50 amSYD - ORD

2 stops26h 24mAir New Zealand

Sat 9/64:10 pmORD - SYD

2 stops27h 25mAir New Zealand

Deal found 8/13

$1,090

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 August 14, 2025.

Fri 9/54:20 pmSYD - ORD

3 stops44h 12mMultiple Airlines

Deal found 8/13

$404

Mon 9/89:30 amSYD - ORD

1 stop28h 13mMultiple Airlines

Deal found 8/14

$567

Mon 9/810:20 amSYD - ORD

2 stops23h 17mUnited Airlines

Deal found 8/14

$589

Mon 9/159:10 amSYD - ORD

1 stop28h 33mMultiple Airlines

Deal found 8/14

$640

Sat 9/65:45 pmSYD - ORD

2 stops33h 06mMultiple Airlines

Deal found 8/13

$645

Thu 9/49:10 amSYD - ORD

1 stop28h 33mMultiple Airlines

Deal found 8/13

$649

Sat 9/135:45 pmSYD - ORD

1 stop20h 28mMultiple Airlines

Deal found 8/13

$670

Mon 11/105:45 pmSYD - ORD

2 stops23h 30mMultiple Airlines

Deal found 8/14

$676

Cheapflights Fare Finder

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

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 8/30

9:25 am-11:06 pm

1 stop28h 41m

Chicago O'Hare Intl

Sat 9/6

7:00 am-6:35 am

1 stop32h 35m

$1,006

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 8/27

9:30 am-4:50 am

2 stops34h 20m

Chicago O'Hare Intl

Wed 9/3

7:05 am-6:55 am

2 stops32h 50m

$1,041

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 8/30

11:50 am-11:14 pm

2 stops26h 24m

Chicago O'Hare Intl

Sat 9/6

4:10 pm-10:35 am

2 stops27h 25m

$1,090

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 10/15

10:20 am-8:11 pm

2 stops25h 51m

Chicago O'Hare Intl

Tue 10/21

3:45 pm-8:20 am

1 stop24h 35m

$1,109

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 8/25

11:50 am-5:01 am

2 stops32h 11m

Chicago O'Hare Intl

Tue 9/9

5:45 pm-9:25 am

1 stop24h 40m

$1,114

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 8/24

9:10 am-9:19 pm

2 stops27h 09m

Chicago O'Hare Intl

Tue 9/9

6:49 pm-7:05 am

1 stop21h 16m

$1,122

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 8/25

9:10 am-9:03 pm

1 stop26h 53m

Chicago O'Hare Intl

Tue 9/9

9:10 am-7:05 am

1 stop30h 55m

$1,125

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 10/15

5:20 pm-5:01 am

2 stops27h 41m

$384

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 9/5

4:20 pm-9:32 pm

3 stops44h 12m

$404

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 9/14

4:20 pm-6:14 pm

2 stops40h 54m

$556

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 15 results

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 round-trip 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 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, August is the cheapest month in which you can book a flight from Sydney to Chicago O'Hare Intl Airport (average of $245). Flying from Sydney to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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.

What is the cheapest time of day to fly from SYD to ORD?

A simple way to save on the total cost of your ticket is to fly from Sydney to Chicago O'Hare Intl Airport at noon. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing O'Hare Intl

See what other customers who have flown with Qantas Airways and American Airlines from Sydney to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Qantas Airways

7.5

Good

895 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jul 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.

Qantas Airways

7.5

Good

895 reviews

Qantas Airways

7.5

Good

895 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jul 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.

American Airlines

7.2

Good

10,000 reviews

Qantas Airways

7.5

Good

895 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jul 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.

Related info for your journey

What airport do you fly from for flights from Sydney to Chicago O'Hare Intl?
If you book a flight to Chicago O'Hare Intl from Sydney, you will be flying from Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 4.6 mi from the center of Sydney. There are 0 flights from Kingsford Smith to Chicago O'Hare Intl per day from 2 different airlines.
What are the cheapest airlines flying from Sydney to Chicago O'Hare Intl Airport round-trip?
According to our current data, Qantas Airways ($631), and American Airlines ($884) offers the cheapest pricing from Sydney to Chicago O'Hare Intl Airport. These flights start at 38% 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 vacation 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, August is the cheapest month in which you can book a flight from Sydney to Chicago O'Hare Intl Airport (average of $245). Flying from Sydney to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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.

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Top 2 airlines flying from Sydney to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Qantas Airways	Cheapest$631	Average$762	FlexibilityNo cancel fee	On-time74%
American Airlines	Cheapest$884	Average$1,157	FlexibilityNo cancel fee	On-time71%

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$384+ Cheap flights from Sydney (SYD) to O'Hare Intl (ORD)

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sydney to O'Hare Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 Tuesday and return on a Saturday

Cheap flight deals from Sydney to O'Hare Intl

Round-trip from

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Popular in

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Average price

Find flight deals from Sydney to O'Hare Intl

Cheapest flights from Sydney to O'Hare IntlExplore 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 August 14, 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 August 14, 2025.

Cheapflights Fare Finder

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

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.

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 round-trip flight from Sydney to O'Hare Intl. Price data was last updated on August 8, 2025.

What is the cheapest month to book a flight from Sydney to Chicago O'Hare Intl Airport?

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 August 14, 2025.

Reviews of airlines servicing O'Hare Intl

See what other customers who have flown with Qantas Airways and American Airlines from Sydney to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

Can I find deals for business class flights from Sydney to O'Hare Intl?

What is the cheapest month to book a flight from Sydney to Chicago O'Hare Intl Airport?

Traveling to a place near Chicago O'Hare Intl Airport?

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Alternative routes for Sydney to O'Hare Intl

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Top 2 airlines flying from Sydney to O'Hare Intl

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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 August 14, 2025.