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?

The number of operators available for flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport is 1 as of March 2026.

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.

$623 Cheap Flights from Chicago O'Hare Intl Airport to Sydney in 2026

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

Prices are currently typical for flights on this route. Typical prices usually range from $1,177 to $2,033. The lowest price recently found on this route was $1,371.

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

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

07:30 - 11:50

ORD

SYD

37h 20m

2 stops

06:00 - 23:27

SYD

ORD

32h 27m

2 stops

$1,371Multiple Airlines

Tue, 5 May - Tue, 12 May

12:44 - 11:50

ORD

SYD

32h 06m

2 stops

06:00 - 05:23

SYD

ORD

38h 23m

2 stops

$1,406Multiple Airlines

Tue, 2 Jun - Sun, 7 Jun

07:30 - 11:50

ORD

SYD

37h 20m

2 stops

06:00 - 05:35

SYD

ORD

38h 35m

2 stops

$1,422Multiple Airlines

Wed, 6 May - Sun, 17 May

07:30 - 08:45

ORD

SYD

34h 15m

2 stops

09:55 - 23:27

SYD

ORD

28h 32m

2 stops

$1,433Multiple Airlines

Tue, 21 Apr - Tue, 28 Apr

12:44 - 11:50

ORD

SYD

32h 06m

2 stops

06:00 - 05:23

SYD

ORD

38h 23m

2 stops

$1,443Multiple Airlines

Thu, 21 May - Tue, 26 May

05:15 - 11:50

ORD

SYD

39h 35m

2 stops

06:00 - 23:27

SYD

ORD

32h 27m

2 stops

$1,445Multiple Airlines

Fri, 17 Apr - Tue, 21 Apr

07:30 - 08:45

ORD

SYD

34h 15m

2 stops

07:50 - 05:35

SYD

ORD

36h 45m

2 stops

$1,448Multiple Airlines

Tue, 21 Apr - Sun, 3 May

15:00 - 11:50

ORD

SYD

29h 50m

2 stops

13:15 - 23:27

SYD

ORD

25h 12m

2 stops

$1,492Multiple Airlines

Sat, 9 May - Mon, 18 May

14:00 - 12:05

ORD

SYD

31h 05m

2 stops

13:15 - 05:35

SYD

ORD

31h 20m

2 stops

$1,519Multiple Airlines

Mon, 27 Apr - Sun, 10 May

14:00 - 12:05

ORD

SYD

31h 05m

2 stops

13:15 - 05:35

SYD

ORD

31h 20m

2 stops

$1,528Multiple Airlines

Mon, 27 Apr - Sun, 10 May

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

3 May

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD19:10Sydney Kingsford Smith

17 May

SYD11:45Sydney Kingsford Smith

35h 55m

1 stop

ORD08:40Chicago O'Hare Intl

$1,673

ANA

5 Aug

ORD17:45Chicago O'Hare Intl

24h 40m

1 stop

SYD09:25Sydney Kingsford Smith

30 Aug

SYD11:45Sydney Kingsford Smith

32h 00m

2 stops

ORD04:45Chicago O'Hare Intl

$1,676

ANA

1 Sept

ORD19:50Chicago O'Hare Intl

32h 20m

2 stops

SYD19:10Sydney Kingsford Smith

8 Sept

SYD11:45Sydney Kingsford Smith

32h 00m

2 stops

ORD04:45Chicago O'Hare Intl

$1,683

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

5 May

ORD16:35Chicago O'Hare Intl

25h 10m

2 stops

SYD08:45Sydney Kingsford Smith

26 May

SYD11:55Sydney Kingsford Smith

26h 21m

2 stops

ORD23:16Chicago O'Hare Intl

$1,707

Air New Zealand

24 Aug

ORD16:05Chicago O'Hare Intl

27h 35m

2 stops

SYD10:40Sydney Kingsford Smith

7 Sept

SYD09:55Sydney Kingsford Smith

26h 42m

2 stops

ORD21:37Chicago O'Hare Intl

$1,710

Air New Zealand

14 Mar

ORD21:15Chicago O'Hare Intl

45h 00m

2 stops

SYD10:15Sydney Kingsford Smith

22 Mar

SYD10:20Sydney Kingsford Smith

36h 00m

1 stop

ORD06:20Chicago O'Hare Intl

$2,461

momondo 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

Cheapest return flight

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 5/5

07:30-11:50

2 stops37h 20m

Sydney Kingsford Smith

Tue 12/5

06:00-23:27

2 stops32h 27m

$1,371

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 2/6

12:44-11:50

2 stops32h 06m

Sydney Kingsford Smith

Sun 7/6

06:00-05:23

2 stops38h 23m

$1,406

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 6/5

07:30-11:50

2 stops37h 20m

Sydney Kingsford Smith

Sun 17/5

06:00-05:35

2 stops38h 35m

$1,422

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 21/4

07:30-08:45

2 stops34h 15m

Sydney Kingsford Smith

Tue 28/4

09:55-23:27

2 stops28h 32m

$1,433

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 21/5

12:44-11:50

2 stops32h 06m

Sydney Kingsford Smith

Tue 26/5

06:00-05:23

2 stops38h 23m

$1,443

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 17/4

05:15-11:50

2 stops39h 35m

Sydney Kingsford Smith

Tue 21/4

06:00-23:27

2 stops32h 27m

$1,445

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 21/4

07:30-08:45

2 stops34h 15m

Sydney Kingsford Smith

Sun 3/5

07:50-05:35

2 stops36h 45m

$1,448

Fastest return journey

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 9/5

15:00-11:50

2 stops29h 50m

Sydney Kingsford Smith

Mon 18/5

13:15-23:27

2 stops25h 12m

$1,492

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 27/4

14:00-12:05

2 stops31h 05m

Sydney Kingsford Smith

Sun 10/5

13:15-05:35

2 stops31h 20m

$1,519

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 27/4

14:00-12:05

2 stops31h 05m

Sydney Kingsford Smith

Sun 10/5

13:15-05:35

2 stops31h 20m

$1,528

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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?

What is the cheapest month to fly to Sydney?

The month of August is, on average, the cheapest month to fly to Sydney from Chicago O'Hare Intl Airport, with most prices found around $1,662. If you aren’t able to travel to Sydney during the month of August, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $1,672.

How far in advance should I book a flight 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 $1,882 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 $1,488 on momondo.

Can stopping save me money on Chicago O'Hare Intl Airport to Sydney flights?

You could potentially save up to 20% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Sydney flight.

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

As of March 2026, prices for Chicago O'Hare Intl Airport to Sydney flights are approximately 39% more expensive 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 21m
Direct flights	None

The fastest flight from Chicago O'Hare Intl Airport to Sydney takes 21h 21m

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

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 21m.
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?
The number of operators available for flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport is 1 as of March 2026.
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?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and Sydney, the leading airline is Qantas Airways, making up 100% of the total bookings.

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 Airways	PriceFrom $1,902	Free cancellation	Rating 7.5 1,004 reviews		Search Qantas Airways flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Manly

Leura

Coogee

Bondi Beach

Cronulla

Randwick

Charlestown

Newport

Swansea

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.