£544 Cheap Flights from Chicago (ORD) to Sydney (SYD)

View £544 flight on Tue, 2 Sep 2025Opens in a new window

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Cheap Flights from Chicago (ORD) to Sydney (SYD)

Prices were available within the past 7 days and start at £544 for one-way flights and £961 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Tue, 21 Oct - Tue, 28 Oct
ORD
Chicago
SYD
Sydney
£961 Return, found 6 days ago
£961
Return
found 6 days ago
Select All Nippon Airways flight, departing Tue, 21 Oct from Chicago to Sydney, returning Tue, 28 Oct, priced at £961 found 6 days ago
All Nippon Airways
Wed, 27 Aug - Wed, 3 Sep
ORD
Chicago
SYD
Sydney
£984 Return, found 3 days ago
£984
Return
found 3 days ago
Select All Nippon Airways flight, departing Wed, 27 Aug from Chicago to Sydney, returning Wed, 3 Sep, priced at £984 found 3 days ago
All Nippon Airways
Wed, 27 Aug - Wed, 3 Sep
ORD
Chicago
SYD
Sydney
£988 Return, found 3 days ago
£988
Return
found 3 days ago
Select All Nippon Airways flight, departing Wed, 27 Aug from Chicago to Sydney, returning Wed, 3 Sep, priced at £988 found 3 days ago
Air New Zealand
Wed, 10 Sep - Sat, 20 Sep
ORD
Chicago
SYD
Sydney
£1,046 Return, found 6 days ago
£1,046
Return
found 6 days ago
Select Air New Zealand flight, departing Wed, 10 Sep from Chicago to Sydney, returning Sat, 20 Sep, priced at £1,046 found 6 days ago
American Airlines
Tue, 10 Mar - Tue, 17 Mar
ORD
Chicago
SYD
Sydney
£1,057 Return, found 4 days ago
£1,057
Return
found 4 days ago
Select American Airlines flight, departing Tue, 10 Mar from Chicago to Sydney, returning Tue, 17 Mar, priced at £1,057 found 4 days ago
Qantas Airways
Mon, 1 Sep - Mon, 15 Sep
ORD
Chicago
SYD
Sydney
£1,071 Return, found 4 days ago
£1,071
Return
found 4 days ago
Select Qantas Airways flight, departing Mon, 1 Sep from Chicago to Sydney, returning Mon, 15 Sep, priced at £1,071 found 4 days ago
Air Canada
Wed, 22 Oct - Tue, 28 Oct
ORD
Chicago
SYD
Sydney
£1,082 Return, found 6 days ago
£1,082
Return
found 6 days ago
Select Air Canada flight, departing Wed, 22 Oct from Chicago to Sydney, returning Tue, 28 Oct, priced at £1,082 found 6 days ago
United
Mon, 3 Nov - Tue, 25 Nov
ORD
Chicago
SYD
Sydney
£1,089 Return, found 5 days ago
£1,089
Return
found 5 days ago
Select United flight, departing Mon, 3 Nov from Chicago to Sydney, returning Tue, 25 Nov, priced at £1,089 found 5 days ago
Turkish Airlines
Tue, 10 Mar - Tue, 17 Mar
ORD
Chicago
SYD
Sydney
£1,116 Return, found 4 days ago
£1,116
Return
found 4 days ago
Select Turkish Airlines flight, departing Tue, 10 Mar from Chicago to Sydney, returning Tue, 17 Mar, priced at £1,116 found 4 days ago
Cathay Pacific
Tue, 29 Apr - Tue, 6 May
ORD
Chicago
SYD
Sydney
£1,145 Return, found 3 days ago
£1,145
Return
found 3 days ago
Select Cathay Pacific flight, departing Tue, 29 Apr from Chicago to Sydney, returning Tue, 6 May, priced at £1,145 found 3 days ago
Flight from Chicago to Sydney route information
Origin airport
O'Hare Intl.
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air India, Air New Zealand, Air Tahiti Nui, All Nippon Airways, Asiana Airlines, British Airways, Cathay Pacific, Emirates, Etihad Airways, Fiji Airways, Japan Airlines, JetBlue Airways, Korean Air, Qantas Airways, Qatar Airways, Turkish Airlines
Return price
£960
Distance
14775 km

Compare flights from Chicago to Sydney easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Chicago to Sydney. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Kingsford Smith Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from O'Hare Intl. to Kingsford Smith Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from O'Hare Intl. (ORD) to Kingsford Smith Intl. (SYD) 

The easiest way to view the best deals on flights from Chicago to Sydney today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from O'Hare Intl. to Kingsford Smith Intl. start at just £961 and range up to £1,145.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Chicago and Sydney
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Chicago to Sydney flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from O'Hare Intl. to Kingsford Smith Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from O'Hare Intl. Airport (ORD) to Sydney Airport?
Round-trip tickets between O’Hare Intl. Airport (ORD) and Kingsford Smith Intl. Airport (SYD) start from £961. This figure is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from ORD to SYD?
Most flights can be cancelled online, but every air carrier has a different set of terms and conditions. If you do have to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from ORD to Sydney Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for O’Hare Intl. Airport (ORD) to SYD flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from O'Hare Intl. Airport (ORD) to SYD?
You’ll have 14,900 kilometres to cover on the long-haul Chicago to Sydney route. Dress in comfy clothes and consider taking some noise-cancelling headphones and a sleep mask.
Which airlines fly direct from O'Hare Intl. Airport (ORD) to SYD?
Direct flights aren’t available, so you’ll have to make at least one stop between O’Hare Intl. Airport (ORD) and Mascot Airport. Use the layover time to stretch your legs and enjoy some personal space.
Are ORD to Sydney Airport flight tickets cheaper when they're purchased at the last minute?
Booking last minute from O’Hare Airport to Kingsford Smith Intl. Airport (SYD) can be hit-or-miss. You might be lucky and score a bargain, but then again, you could miss out entirely! If you’d rather play it safe and start planning your trip early on, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines list their prices that far in advance. Our suggestion? Check back often as updates are made regularly.

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