What’s the cheapest layover airport for flights from Chicago O'Hare Intl Airport to Sydney?

Dallas (DFW) is the most affordable 1-stop option, with an average round-trip price of $889.

What’s the fastest layover option from Chicago O'Hare Intl Airport to Sydney?

Flights via Dallas (DFW) have the shortest average one-way travel time for 1-stop routes: 21h 02m.

Which airport typically offers the quickest layover for flights from Chicago O'Hare Intl Airport to Sydney?

Flights via Dallas (DFW) offer the fastest connection on this route, with an average layover time of 1h 32m.

What’s the top layover airport for flights from Chicago O'Hare Intl Airport to Sydney?

Los Angeles (LAX) – chosen by Cheapflights users on 67% of 1-stop itineraries from Chicago O'Hare Intl Airport to Sydney on Cheapflights.

How long is the flight from Chicago O'Hare Intl Airport to Sydney?

There are many flights that can get you from Chicago O'Hare Intl Airport to Sydney in 35h 20m. Fly via Alaska Airlines or Fiji Airways to get the fastest option. There are 9228 mi between Chicago O'Hare Intl Airport and Sydney. Both multi-stop and nonstop flights can be found to your destination and back.

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

Flying on ANA is currently your cheapest option to Sydney, with prices starting at $679. Additional round-trip tickets that might be worth considering are offered by Qantas Airways and American Airlines, with the lowest prices starting at $812 and $823, respectively. ANA is currently priced 38% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

What are the most popular airlines that fly from Chicago O'Hare Intl Airport to Sydney?

Before booking your flight from Chicago O'Hare Intl Airport to Sydney check out the most popular airlines for this route: American Airlines, Air Canada or Delta.

Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to Sydney?

Chicago O'Hare Intl Airport to Sydney flights have a layover in Los Angeles most of the time.

Where are the least popular layover locations for Chicago O'Hare Intl Airport to Sydney flights?

Of the flights from Chicago O'Hare Intl Airport to Sydney that have layovers, the fewest flights stop in Dallas.

What are some popular things to do or see while on a layover in Los Angeles?

Most Los Angeles visitors opt to spend their time experiencing Hollywood Bowl, Hollywood Walk of Fame, and The Wiltern. Hollywood Bowl, Hollywood Walk of Fame, and The Wiltern can be accessed by traveling approximately 12.5 mi, 11.7 mi, and 10.0 mi, respectively from Los Angeles. Travelers can book a car rental at Los Angeles for about $49 per day to make their sightseeing more efficient.

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

Flights from Chicago O'Hare Intl Airport to Sydney are found to be more expensive on Wednesday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sydney.

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

Our data shows that August tends to be the cheapest month to fly to Sydney from Chicago O'Hare Intl Airport. Users have commonly found prices around $991 for the month, but tickets can be as low as $743. Due to multiple factors, prepare for potentially higher prices in December.

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

If you book a flight to Sydney from Chicago O'Hare Intl, you will be flying to 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 Chicago O'Hare Intl to Kingsford Smith per day from 8 different airlines.

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

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

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

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

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

Yes. Cheapflights offers flight deals from O'Hare Intl to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$465+ Flights from Chicago O'Hare Intl Airport to Sydney

Q: How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Sydney?

Airfare is typical for this route at the moment. Chicago O'Hare Intl Airport to Sydney flights typically cost between $955 and $1,581 in February. The cheapest round-trip price found within the last 3 days was $1,017 on Alaska Airlines (Feb 17-Mar 3).

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Sydney Kingsford Smith are usually found in March or May, booked 13 days in advance, depart on a Saturday or Sunday and return on a Monday

Cheap flight deals from O'Hare Intl to Sydney

Round-trip from	$1,017 (Alaska Airlines)
One-way from	$537 (Kiwi.com)
Popular in	December
Cheapest in	March
Average price	$1,357

From Chicago O'Hare Intl to Sydney Kingsford Smith

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

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Highest demand for flights based on searches. 11% potential increase in price ($148 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from O'Hare Intl to Sydney

Cheapest flights from O'Hare Intl to Sydney
Explore the most affordable flight options available from O'Hare Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Tue 10/2111:00 amORD - SYD

2 stops29h 05mMultiple Airlines

Fri 10/311:05 pmSYD - ORD

2 stops26h 34mMultiple Airlines

Deal found 9/9

$1,064

Fri 10/243:15 pmORD - SYD

2 stops36h 30mAlaska Airlines

Fri 10/319:40 pmSYD - ORD

2 stops24h 42mAlaska Airlines

Deal found 9/10

$1,079

Tue 11/43:25 pmORD - SYD

2 stops35h 20mAlaska Airlines

Tue 11/189:40 pmSYD - ORD

1 stop35h 50mAlaska Airlines

Deal found 9/9

$1,090

Mon 10/2012:28 pmORD - SYD

2 stops27h 37mMultiple Airlines

Sun 11/22:05 pmSYD - ORD

2 stops27h 06mMultiple Airlines

Deal found 9/10

$1,103

Mon 11/106:30 amORD - SYD

2 stops37h 00mMultiple Airlines

Thu 11/132:00 pmSYD - ORD

2 stops26h 00mMultiple Airlines

Deal found 9/10

$1,105

Tue 10/215:59 pmORD - SYD

2 stops33h 46mAlaska Airlines

Tue 10/289:40 pmSYD - ORD

2 stops34h 50mAlaska Airlines

Deal found 9/8

$1,107

Thu 11/65:53 pmORD - SYD

2 stops32h 52mAlaska Airlines

Sat 11/229:40 pmSYD - ORD

2 stops34h 13mAlaska Airlines

Deal found 9/10

$1,120

Thu 11/135:53 pmORD - SYD

2 stops32h 52mAlaska Airlines

Tue 11/189:40 pmSYD - ORD

2 stops35h 50mAlaska Airlines

Deal found 9/9

$1,121

Fri 10/243:15 pmORD - SYD

2 stops36h 30mHawaiian Airlines

Fri 10/319:40 pmSYD - ORD

2 stops24h 42mHawaiian Airlines

Deal found 9/9

$1,130

Tue 10/216:00 amORD - SYD

2 stops32h 05mMultiple Airlines

Sat 11/155:45 pmSYD - ORD

1 stop22h 15mMultiple Airlines

Deal found 9/11

$1,136

Sat 10/186:00 amORD - SYD

2 stops33h 30mMultiple Airlines

Fri 11/145:45 pmSYD - ORD

1 stop22h 15mMultiple Airlines

Deal found 9/11

$1,152

Best flights from O'Hare Intl to Sydney
Discover carefully curated flight deals from O'Hare Intl to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Tue 10/215:59 pmORD - SYD

2 stops33h 46mAlaska Airlines

Tue 10/289:40 pmSYD - ORD

2 stops34h 50mAlaska Airlines

Deal found 9/10

$1,176

Tue 9/236:30 pmORD - SYD

2 stops36h 40mFiji Airways

Tue 2/246:00 amSYD - ORD

2 stops34h 57mFiji Airways

Deal found 9/11

$1,277

Mon 12/111:50 amORD - SYD

2 stops38h 30mTurkish Airlines

Thu 12/119:15 pmSYD - ORD

2 stops38h 10mTurkish Airlines

Deal found 9/11

$1,404

Wed 3/43:55 pmORD - SYD

1 stop24h 20mAir New Zealand

Sat 3/147:15 pmSYD - ORD

2 stops41h 56mAir New Zealand

Deal found 9/11

$1,410

Sun 11/96:03 pmORD - SYD

2 stops25h 27mMultiple Airlines

Wed 11/126:00 amSYD - ORD

2 stops32h 24mMultiple Airlines

Deal found 9/11

$1,416

Tue 9/238:20 pmORD - SYD

2 stops31h 55mANA

Tue 2/249:45 pmSYD - ORD

1 stop26h 35mANA

Deal found 9/11

$1,454

Fri 11/143:25 pmORD - SYD

2 stops35h 20mAlaska Airlines

Sat 11/229:40 pmSYD - ORD

2 stops34h 13mAlaska Airlines

Deal found 9/10

$1,177

Tue 10/215:59 pmORD - SYD

2 stops33h 46mAlaska Airlines

Fri 10/319:40 pmSYD - ORD

2 stops35h 17mAlaska Airlines

Deal found 9/10

$1,250

Wed 12/3111:50 amORD - SYD

2 stops38h 30mTurkish Airlines

Wed 1/149:15 pmSYD - ORD

2 stops53h 50mTurkish Airlines

Deal found 9/11

$1,408

Sun 11/25:53 pmORD - SYD

2 stops32h 52mAlaska Airlines

Tue 11/189:40 pmSYD - ORD

2 stops35h 50mAlaska Airlines

Deal found 9/11

$1,332

Mon 1/126:50 pmORD - SYD

3 stops31h 55mAlaska Airlines

Mon 1/269:40 pmSYD - ORD

2 stops32h 24mAlaska Airlines

Deal found 9/10

$1,451

Mon 1/126:50 pmORD - SYD

2 stops31h 55mAlaska Airlines

Sun 1/259:40 pmSYD - ORD

1 stop32h 24mAlaska Airlines

Deal found 9/10

$1,460

Last-minute flights from O'Hare Intl to Sydney
Discover last-minute flight deals from O'Hare Intl to Sydney. Data last updated September 11, 2025 and is based on user searches.

Tue 9/236:30 pmORD - SYD

2 stops36h 40mFiji Airways

Tue 2/246:00 amSYD - ORD

2 stops30h 18mFiji Airways

Deal found 9/9

$1,202

Thu 9/256:30 amORD - SYD

2 stops38h 45mMultiple Airlines

Fri 10/246:00 amSYD - ORD

2 stops33h 59mMultiple Airlines

Deal found 9/10

$1,172

Sat 9/277:00 amORD - SYD

2 stops37h 45mMultiple Airlines

Sat 10/112:45 pmSYD - ORD

2 stops25h 14mMultiple Airlines

Deal found 9/10

$1,178

Mon 10/66:30 amORD - SYD

2 stops38h 15mMultiple Airlines

Sun 10/192:15 pmSYD - ORD

2 stops25h 44mMultiple Airlines

Deal found 9/11

$1,218

Sat 10/186:00 amORD - SYD

2 stops33h 30mMultiple Airlines

Fri 11/145:45 pmSYD - ORD

1 stop22h 15mMultiple Airlines

Deal found 9/11

$1,152

Mon 10/2012:28 pmORD - SYD

2 stops27h 37mMultiple Airlines

Sun 11/22:05 pmSYD - ORD

2 stops27h 06mMultiple Airlines

Deal found 9/10

$1,103

Tue 10/216:00 amORD - SYD

2 stops32h 05mMultiple Airlines

Sat 11/155:45 pmSYD - ORD

1 stop22h 15mMultiple Airlines

Deal found 9/11

$1,136

Tue 10/215:59 pmORD - SYD

2 stops33h 46mAlaska Airlines

Tue 10/289:40 pmSYD - ORD

2 stops34h 50mAlaska Airlines

Deal found 9/10

$1,176

Fri 10/243:15 pmORD - SYD

2 stops36h 30mAlaska Airlines

Fri 10/319:40 pmSYD - ORD

2 stops24h 42mAlaska Airlines

Deal found 9/10

$1,079

Sat 10/256:00 amORD - SYD

2 stops33h 30mMultiple Airlines

Sat 11/15:45 pmSYD - ORD

1 stop21h 15mMultiple Airlines

Deal found 9/10

$1,169

Mon 10/2711:41 amORD - SYD

3 stops33h 04mMultiple Airlines

Sun 11/92:00 pmSYD - ORD

3 stops33h 25mMultiple Airlines

Deal found 9/10

$1,214

One-way flights from O'Hare Intl to Sydney
Search for one-way flight options from O'Hare Intl to Sydney. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Sun 11/25:00 amORD - SYD

3 stops58h 50mMultiple Airlines

Deal found 9/9

$537

Tue 9/164:00 pmORD - SYD

2 stops48h 20mMultiple Airlines

Deal found 9/9

$562

Thu 9/256:20 amORD - SYD

2 stops33h 45mMultiple Airlines

Deal found 9/9

$563

Mon 11/248:00 amORD - SYD

2 stops30h 25mMultiple Airlines

Deal found 9/9

$591

Mon 9/155:10 amORD - SYD

2 stops34h 55mMultiple Airlines

Deal found 9/10

$592

Fri 11/76:03 pmORD - SYD

2 stops32h 52mMultiple Airlines

Deal found 9/10

$621

Sun 9/144:00 pmORD - SYD

2 stops48h 20mMultiple Airlines

Deal found 9/9

$627

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 10/21

5:59 pm-7:45 pm

2 stops33h 46m

Sydney Kingsford Smith

Tue 10/28

9:40 pm-4:30 pm

2 stops34h 50m

$1,176

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 11/14

3:25 pm-7:45 pm

2 stops35h 20m

Sydney Kingsford Smith

Sat 11/22

9:40 pm-2:53 pm

2 stops34h 13m

$1,177

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 10/21

5:59 pm-7:45 pm

2 stops33h 46m

Sydney Kingsford Smith

Fri 10/31

9:40 pm-4:57 pm

2 stops35h 17m

$1,250

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 9/23

6:30 pm-10:10 pm

2 stops36h 40m

Sydney Kingsford Smith

Tue 2/24

6:00 am-11:57 pm

2 stops34h 57m

$1,277

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 11/2

5:53 pm-7:45 pm

2 stops32h 52m

Sydney Kingsford Smith

Tue 11/18

9:40 pm-4:30 pm

2 stops35h 50m

$1,332

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 12/1

11:50 am-7:20 pm

2 stops38h 30m

Sydney Kingsford Smith

Thu 12/11

9:15 pm-6:25 pm

2 stops38h 10m

$1,404

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 12/31

11:50 am-7:20 pm

2 stops38h 30m

Sydney Kingsford Smith

Wed 1/14

9:15 pm-10:05 am

2 stops53h 50m

$1,408

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 3/4

3:55 pm-9:15 am

1 stop24h 20m

Sydney Kingsford Smith

Sat 3/14

7:15 pm-9:11 pm

2 stops41h 56m

$1,410

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 11/9

6:03 pm-12:30 pm

2 stops25h 27m

Sydney Kingsford Smith

Wed 11/12

6:00 am-9:24 pm

2 stops32h 24m

$1,416

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 1/12

6:50 pm-7:45 pm

3 stops31h 55m

Sydney Kingsford Smith

Mon 1/26

9:40 pm-1:04 pm

2 stops32h 24m

$1,451

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 23 results

Best time to book a flight from O'Hare Intl to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from O'Hare Intl 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 Chicago O'Hare Intl Airport to Sydney

Prices

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

To ensure you get the cheapest price possible for a flight from Chicago O'Hare Intl Airport to Sydney, you should look to book at least 13 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $1,035). Flying from Chicago O'Hare Intl Airport to Sydney in December is currently the most expensive (average of $1,626). 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 ORD to SYD?

It’s typically best to fly out from Chicago O'Hare Intl Airport to Sydney in the afternoon. Doing so could potentially save you 17% on the flight price compared to flying in the evening, which is usually more expensive.

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

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

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Sydney?

Reviews of airlines servicing Sydney

Read reviews from past customers who have flown Delta, Qantas Airways, and United Airlines from Chicago O'Hare Intl Airport to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,960 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Qantas Airways

7.5

Good

905 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,937 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air Canada

7.1

Good

10,000 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to Sydney from Chicago O'Hare Intl?
If you book a flight to Sydney from Chicago O'Hare Intl, you will be flying to 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 Chicago O'Hare Intl to Kingsford Smith per day from 8 different airlines.
How long is the flight from Chicago O'Hare Intl Airport to Sydney?
There are many flights that can get you from Chicago O'Hare Intl Airport to Sydney in 35h 20m. Fly via Alaska Airlines or Fiji Airways to get the fastest option. There are 9228 mi between Chicago O'Hare Intl Airport and Sydney. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Sydney round-trip?
Flying on ANA is currently your cheapest option to Sydney, with prices starting at $679. Additional round-trip tickets that might be worth considering are offered by Qantas Airways and American Airlines, with the lowest prices starting at $812 and $823, respectively. ANA is currently priced 38% below the average price you’ll pay for this route.
Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to Sydney?
Chicago O'Hare Intl Airport to Sydney flights have a layover in Los Angeles most of the time.
What are some popular things to do or see while on a layover in Los Angeles?
Most Los Angeles visitors opt to spend their time experiencing Hollywood Bowl, Hollywood Walk of Fame, and The Wiltern. Hollywood Bowl, Hollywood Walk of Fame, and The Wiltern can be accessed by traveling approximately 12.5 mi, 11.7 mi, and 10.0 mi, respectively from Los Angeles. Travelers can book a car rental at Los Angeles for about $49 per day to make their sightseeing more efficient.
Where are the least popular layover locations for Chicago O'Hare Intl Airport to Sydney flights?
Of the flights from Chicago O'Hare Intl Airport to Sydney that have layovers, the fewest flights stop in Dallas.
Can I find deals for flights from O'Hare Intl to Sydney that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl to Sydney?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Sydney.
Can I find deals for business class flights from O'Hare Intl to Sydney?
Yes. Cheapflights offers flight deals from O'Hare Intl to Sydney 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 Chicago O'Hare Intl Airport to Sydney?
Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $1,035). Flying from Chicago O'Hare Intl Airport to Sydney in December is currently the most expensive (average of $1,626). 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

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Alternative routes for O'Hare Intl to Sydney

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Other flights to Sydney

Top 8 airlines flying from O'Hare Intl to Sydney

Airline	Cheapest	Average	Flexibility	On-time
ANA	Cheapest$679	Average$1,186	FlexibilityNo cancel fee	On-time80%
Qantas Airways	Cheapest$812	Average$945	FlexibilityNo cancel fee	On-time74%
American Airlines	Cheapest$823	Average$870	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$846	Average$1,034	FlexibilityNo cancel fee	On-timeN/A
Fiji Airways	Cheapest$849	Average$1,181	FlexibilityNo cancel fee	On-time74%
Air Canada	Cheapest$959	Average$1,308	FlexibilityNo cancel fee	On-time67%
Air New Zealand	Cheapest$1,282	Average$1,407	FlexibilityNo cancel fee	On-time78%
United Airlines	Cheapest$1,336	Average$1,507	FlexibilityNo cancel fee	On-time69%

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$465+ Cheap flights from O'Hare Intl (ORD) to Sydney (SYD)

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Sydney Kingsford Smith are usually found in March or May, booked 13 days in advance, depart on a Saturday or Sunday and return on a Monday

Cheap flight deals from O'Hare Intl to Sydney

Round-trip from

One-way from

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Find flight deals from O'Hare Intl to Sydney

Cheapest flights from O'Hare Intl to SydneyExplore the most affordable flight options available from O'Hare Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from O'Hare Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from O'Hare Intl to Sydney

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Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Sydney

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

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

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

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

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Sydney?

What’s the top layover airport for flights from Chicago O'Hare Intl Airport to Sydney?

What’s the fastest layover option from Chicago O'Hare Intl Airport to Sydney?

What’s the fastest layover option from Chicago O'Hare Intl Airport to Sydney?

Which airport typically offers the quickest layover for flights from Chicago O'Hare Intl Airport to Sydney?

Reviews of airlines servicing Sydney

Read reviews from past customers who have flown Delta, Qantas Airways, and United Airlines from Chicago O'Hare Intl Airport to Sydney. Users can see the overall rating for each airline as well as how each is rated 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 O'Hare Intl to Sydney. 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 into for flights to Sydney from Chicago O'Hare Intl?

How long is the flight from Chicago O'Hare Intl Airport to Sydney?

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

Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to Sydney?

What are some popular things to do or see while on a layover in Los Angeles?

Where are the least popular layover locations for Chicago O'Hare Intl Airport to Sydney flights?

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

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

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

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

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Alternative routes for O'Hare Intl to Sydney

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Top 8 airlines flying from O'Hare Intl to Sydney

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Cheapest flights from O'Hare Intl to Sydney
Explore the most affordable flight options available from O'Hare Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.