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Cheap flights from Chicago O'Hare Intl Airport to Sydney from $847

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Sydney departing on 13/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago O'Hare Intl Airport to Sydney

Cheap return flights

Enter your travel dates to find the best prices.
Air New Zealand Logo
15:00 - 10:40ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
27h 40m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
09:55 - 18:56SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
26h 01m2 stops Auckland Intl Los Angeles Los Angeles
$1,730Air New Zealand
Wed, 21 Oct - Mon, 9 Nov
Air New Zealand Logo
13:00 - 08:35ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
26h 35m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
09:55 - 18:56SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
26h 01m2 stops Auckland Intl Los Angeles Los Angeles
$1,730Air New Zealand
Wed, 4 Nov - Wed, 11 Nov
Air New Zealand Logo
15:00 - 08:45ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
25h 45m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
11:50 - 18:56SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
24h 06m2 stops Auckland Intl Los Angeles Los Angeles
$1,730Air New Zealand
Wed, 21 Oct - Mon, 9 Nov
Air New Zealand Logo
11:00 - 08:35ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
28h 35m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
09:55 - 20:22SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
27h 27m2 stops Auckland Intl Los Angeles Los Angeles
$1,730Air New Zealand
Mon, 1 Feb - Wed, 10 Feb
Air New Zealand Logo
14:10 - 10:35ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
27h 25m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
09:55 - 18:54SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
25h 59m2 stops Auckland Intl Los Angeles Los Angeles
$1,730Air New Zealand
Mon, 1 Feb - Wed, 3 Mar
Air New Zealand Logo
16:45 - 10:40ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
26h 55m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
09:55 - 21:35SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
26h 40m2 stops Auckland Intl Los Angeles Los Angeles
$1,730Air New Zealand
Tue, 1 Sep - Tue, 8 Sep
Air New Zealand Logo
14:00 - 08:35ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
25h 35m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
11:50 - 18:54SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
24h 04m2 stops Auckland Intl Los Angeles Los Angeles
$1,730Air New Zealand
Wed, 25 Nov - Wed, 2 Dec
Air New Zealand Logo
15:48 - 10:40ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
27h 52m2 stops Los Angeles Los Angeles Auckland Intl
Air New Zealand Logo
09:55 - 21:35SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
26h 40m2 stops Auckland Intl Los Angeles Los Angeles
$1,730Air New Zealand
Tue, 1 Sep - Tue, 8 Sep
Qantas Airways Logo
18:45 - 09:00ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
21h 15m1 stop Los Angeles Los Angeles
Qantas Airways Logo
14:05 - 19:36SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
22h 31m1 stop Dallas/Fort Worth
$2,209Qantas Airways
Tue, 1 Dec - Thu, 31 Dec
Qantas Airways Logo
18:45 - 09:00ORD  Chicago O'Hare Intl-SYD Sydney Kingsford Smith
21h 15m1 stop Los Angeles Los Angeles
Qantas Airways Logo
11:15 - 16:51SYD  Sydney Kingsford Smith-ORD Chicago O'Hare Intl
22h 36m1 stop Los Angeles Los Angeles
$2,209Qantas Airways
Tue, 1 Dec - Sun, 13 Dec

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Air New Zealand flights from Chicago O'Hare Intl Airport to Sydney

Our best Air New Zealand deals on Chicago O'Hare Intl Airport to Sydney flight tickets
Air New Zealand
1 Feb
ORD11:00Chicago O'Hare Intl
28h 35m
2 stops
SYD08:35Sydney Kingsford Smith
10 Feb
SYD09:55Sydney Kingsford Smith
27h 27m
2 stops
ORD20:22Chicago O'Hare Intl
$1,730
Air New Zealand
4 Nov
ORD14:00Chicago O'Hare Intl
27h 35m
2 stops
SYD10:35Sydney Kingsford Smith
18 Nov
SYD09:55Sydney Kingsford Smith
27h 42m
2 stops
ORD20:37Chicago O'Hare Intl
$1,731
Air New Zealand
24 Oct
ORD21:38Chicago O'Hare Intl
42h 57m
2 stops
SYD08:35Sydney Kingsford Smith
9 Nov
SYD11:50Sydney Kingsford Smith
24h 06m
2 stops
ORD18:56Chicago O'Hare Intl
$1,742

ANA flights from Chicago O'Hare Intl Airport to Sydney

Our best ANA deals on Chicago O'Hare Intl Airport to Sydney flight tickets
ANA
27 Sept
ORD19:45Chicago O'Hare Intl
32h 25m
2 stops
SYD19:10Sydney Kingsford Smith
12 Oct
SYD21:45Sydney Kingsford Smith
26h 55m
1 stop
ORD08:40Chicago O'Hare Intl
$1,738
ANA
27 Sept
ORD17:45Chicago O'Hare Intl
34h 25m
1 stop
SYD19:10Sydney Kingsford Smith
12 Oct
SYD21:45Sydney Kingsford Smith
26h 55m
1 stop
ORD08:40Chicago O'Hare Intl
$1,745
ANA
27 Sept
ORD17:45Chicago O'Hare Intl
34h 25m
1 stop
SYD19:10Sydney Kingsford Smith
12 Oct
SYD21:45Sydney Kingsford Smith
26h 55m
1 stop
ORD08:40Chicago O'Hare Intl
$1,771

momondo Fare Finder

 
Customise your flight search to find flights from Chicago O'Hare Intl Airport to Sydney 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, momondo users made 78,305 searches. Data last updated 10 August 2026.
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

Cheapest return flight

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 21/10

15:00-10:40

2 stops27h 40m

Sydney Kingsford Smith

Mon 9/11

09:55-18:56

2 stops26h 01m

$1,730

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 4/11

13:00-08:35

2 stops26h 35m

Sydney Kingsford Smith

Wed 11/11

09:55-18:56

2 stops26h 01m

$1,730

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 21/10

15:00-08:45

2 stops25h 45m

Sydney Kingsford Smith

Mon 9/11

11:50-18:56

2 stops24h 06m

$1,730

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 1/2

11:00-08:35

2 stops28h 35m

Sydney Kingsford Smith

Wed 10/2

09:55-20:22

2 stops27h 27m

$1,730

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Mon 1/2

14:10-10:35

2 stops27h 25m

Sydney Kingsford Smith

Wed 3/3

09:55-18:54

2 stops25h 59m

$1,730

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/9

16:45-10:40

2 stops26h 55m

Sydney Kingsford Smith

Tue 8/9

09:55-21:35

2 stops26h 40m

$1,730

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Wed 25/11

14:00-08:35

2 stops25h 35m

Sydney Kingsford Smith

Wed 2/12

11:50-18:54

2 stops24h 04m

$1,730

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/9

15:48-10:40

2 stops27h 52m

Sydney Kingsford Smith

Tue 8/9

09:55-21:35

2 stops26h 40m

$1,730
Fastest return journey

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/12

18:45-09:00

1 stop21h 15m

Sydney Kingsford Smith

Thu 31/12

14:05-19:36

1 stop22h 31m

$2,209

ChicagoSydney

ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith

ORDSYD

Chicago O'Hare Intl

Tue 1/12

18:45-09:00

1 stop21h 15m

Sydney Kingsford Smith

Sun 13/12

11:15-16:51

1 stop22h 36m

$2,209

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Chicago O'Hare Intl Airport and Sydney?

Prices are currently low for flights on this route.

Typical prices usually range from $1,781 to $2,213.
The lowest price recently found on this route was $1,730.

What is the cheapest month to fly to Sydney?

The month of November is, on average, the cheapest month to fly to Sydney from Chicago O'Hare Intl Airport, with most prices found around $1,682. If you aren’t able to travel to Sydney during the month of November, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $1,812.

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

You are more likely to see cheaper flights to Sydney from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,010 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Chicago O'Hare Intl Airport for as low as $1,643 on momondo.

How have Chicago O'Hare Intl Airport to Sydney flight prices changed over time?

As of August 2026, prices for Chicago O'Hare Intl Airport to Sydney flights are approximately 29% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chicago O'Hare Intl Airport to Sydney (ORD to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Sydney

Fastest flight time

21h 02m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Sydney takes 21h 02m
There are no direct flights from Chicago O'Hare Intl Airport to Sydney. There are no popular flight routes from Chicago O'Hare Intl Airport to Sydney.
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Sydney

  • How far is Chicago O'Hare Intl to Sydney Kingsford Smith by plane?

    A flight from Chicago O'Hare Intl to Sydney Kingsford Smith will travel around 14845.8 km. In terms of flight time, this usually takes a little over 21h 02m.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Chicago O'Hare Intl Airport to Sydney?

Best airlines flying from Chicago O'Hare Intl Airport to Sydney

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Sydney with momondo
Airline
Rating
Free cancellation
Price
Qantas AirwaysPriceFrom $2,079Free cancellationRating
7.5
1,081 reviews
Search Qantas Airways flights

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Terrigal
Penrith
Katoomba
Lithgow
Manly
Coogee
Leura
Randwick
Cronulla
Bondi Beach
Charlestown
Swansea
Newport

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Sydney?

Finding the right flight to Sydney from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

Can I find flights from Chicago to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to Sydney?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Chicago.

I’m not ready to book a flight from Chicago to Sydney right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Chicago and alert you when they change.

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