What is the cheapest airline that flies from Chicago to Sydney Kingsford Smith?

Delta is the most popular carrier operating from Chicago to Sydney Kingsford Smith

When did momondo last update prices for flights from Chicago to Sydney Kingsford Smith Airport?

Prices for flights from Chicago to Sydney Kingsford Smith Airport were last updated today.

How many operators does momondo search for flights from Chicago to Sydney Kingsford Smith Airport?

As of January 2026, there is 1 operator available to choose from for flights from Chicago to Sydney Kingsford Smith Airport.

How old do you have to be to fly from Chicago to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago 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.

$732 Cheap Flights from Chicago to Sydney in 2026

Q: What is the typical price of a round-trip flight between Chicago and Sydney?

Prices are currently typical for flights on this route. Typical prices usually range from $1,379 to $1,969. The lowest price recently found on this route was $1,540.

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Find the cheapest flights from Chicago to Sydney

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 07:30

ORD

SYD

34h 30m

1 stop

13:15 - 06:46

SYD

ORD

32h 31m

2 stops

$1,540Multiple Airlines

Tue, 28 Apr - Mon, 4 May

06:00 - 07:30

ORD

SYD

34h 30m

1 stop

13:15 - 06:46

SYD

ORD

32h 31m

2 stops

$1,570Multiple Airlines

Thu, 30 Apr - Thu, 21 May

19:45 - 07:30

ORD

SYD

44h 45m

1 stop

13:15 - 06:46

SYD

ORD

32h 31m

2 stops

$1,584Multiple Airlines

Wed, 8 Apr - Thu, 30 Apr

06:00 - 07:30

ORD

SYD

34h 30m

1 stop

13:15 - 06:46

SYD

ORD

32h 31m

2 stops

$1,607Multiple Airlines

Thu, 23 Apr - Tue, 28 Apr

15:40 - 07:20

ORD

SYD

24h 40m

1 stop

09:20 - 14:45

SYD

ORD

20h 25m

1 stop

$1,654Air Canada

Tue, 5 May - Tue, 19 May

15:40 - 07:20

ORD

SYD

24h 40m

1 stop

09:20 - 14:43

SYD

ORD

20h 23m

1 stop

$1,656Air Canada

Sun, 12 Apr - Sun, 19 Apr

15:40 - 07:20

ORD

SYD

24h 40m

1 stop

09:20 - 14:43

SYD

ORD

20h 23m

1 stop

$1,657Air Canada

Wed, 8 Apr - Tue, 14 Apr

13:26 - 08:30

MDW

SYD

26h 04m

2 stops

09:40 - 17:54

SYD

MDW

24h 14m

2 stops

$2,175Delta

Tue, 10 Feb - Tue, 17 Mar

13:26 - 08:30

MDW

SYD

26h 04m

2 stops

10:40 - 17:37

SYD

MDW

23h 57m

2 stops

$2,177Delta

Tue, 10 Feb - Tue, 3 Mar

14:05 - 07:30

MDW

SYD

25h 25m

2 stops

10:15 - 08:53

SYD

MDW

38h 38m

2 stops

$2,203Delta

Tue, 17 Mar - Tue, 31 Mar

Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets

Qantas Airways

10 Feb

ORD15:10Chicago O'Hare Intl

25h 40m

2 stops

SYD09:50Sydney Kingsford Smith

17 Feb

SYD21:25Sydney Kingsford Smith

19h 34m

1 stop

ORD23:59Chicago O'Hare Intl

$1,691

Qantas Airways

1 Feb

ORD13:15Chicago O'Hare Intl

24h 40m

1 stop

SYD06:55Sydney Kingsford Smith

15 Feb

SYD16:35Sydney Kingsford Smith

24h 12m

2 stops

ORD23:47Chicago O'Hare Intl

$1,703

Qantas Airways

22 Feb

ORD16:49Chicago O'Hare Intl

25h 06m

2 stops

SYD10:55Sydney Kingsford Smith

5 Apr

SYD21:25Sydney Kingsford Smith

23h 12m

1 stop

ORD05:37Chicago O'Hare Intl

$1,710

ANA flights from Chicago to Sydney

Our best ANA deals on Chicago to Sydney flight tickets

ANA

14 Mar

ORD18:25Chicago O'Hare Intl

46h 10m

1 stop

SYD08:35Sydney Kingsford Smith

18 Mar

SYD10:20Sydney Kingsford Smith

20h 21m

1 stop

ORD14:41Chicago O'Hare Intl

$1,713

ANA

10 June

ORD17:45Chicago O'Hare Intl

34h 30m

1 stop

SYD19:15Sydney Kingsford Smith

18 June

SYD20:55Sydney Kingsford Smith

33h 43m

2 stops

ORD15:38Chicago O'Hare Intl

$1,753

ANA

1 June

ORD17:45Chicago O'Hare Intl

34h 30m

1 stop

SYD19:15Sydney Kingsford Smith

15 June

SYD11:50Sydney Kingsford Smith

32h 15m

2 stops

ORD05:05Chicago O'Hare Intl

$1,759

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 28/4

06:00-07:30

1 stop34h 30m

Sydney Kingsford Smith

Mon 4/5

13:15-06:46

2 stops32h 31m

$1,540

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 30/4

06:00-07:30

1 stop34h 30m

Sydney Kingsford Smith

Thu 21/5

13:15-06:46

2 stops32h 31m

$1,570

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/4

19:45-07:30

1 stop44h 45m

Sydney Kingsford Smith

Thu 30/4

13:15-06:46

2 stops32h 31m

$1,584

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 23/4

06:00-07:30

1 stop34h 30m

Sydney Kingsford Smith

Tue 28/4

13:15-06:46

2 stops32h 31m

$1,607

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 5/5

15:40-07:20

1 stop24h 40m

Sydney Kingsford Smith

Tue 19/5

09:20-14:45

1 stop20h 25m

$1,654

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 12/4

15:40-07:20

1 stop24h 40m

Sydney Kingsford Smith

Sun 19/4

09:20-14:43

1 stop20h 23m

$1,656

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 8/4

15:40-07:20

1 stop24h 40m

Sydney Kingsford Smith

Tue 14/4

09:20-14:43

1 stop20h 23m

$1,657

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Tue 10/2

13:26-08:30

2 stops26h 04m

Sydney Kingsford Smith

Tue 17/3

09:40-17:54

2 stops24h 14m

$2,175

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Tue 10/2

13:26-08:30

2 stops26h 04m

Sydney Kingsford Smith

Tue 3/3

10:40-17:37

2 stops23h 57m

$2,177

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Tue 17/3

14:05-07:30

2 stops25h 25m

Sydney Kingsford Smith

Tue 31/3

10:15-08:53

2 stops38h 38m

$2,203

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 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

Prices

Airlines

What is the typical price of a round-trip flight between Chicago and Sydney?

What is the cheapest month to fly to Sydney?

The month of June is, on average, the cheapest month to fly to Sydney from Chicago, with most prices found around $1,279. If you aren’t able to travel to Sydney during the month of June, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,285.

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,626 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 for as low as $1,349 on momondo.

Can stopping save me money on Chicago to Sydney flights?

You could potentially save up to 20% on your flight if you consider stops on a Chicago to Sydney flight.

How have Chicago to Sydney flight prices changed over time?

As of January 2026, prices for Chicago to Sydney flights are approximately 8% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Chicago to Sydney (CHI to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Sydney

Fastest flight time	25h 04m
Direct flights	None

The fastest flight from Chicago to Sydney takes 25h 04m

There are no direct flights from Chicago to Sydney. There are no popular flight routes from Chicago to Sydney.

Search flight deals

How far is Chicago to Sydney Kingsford Smith by plane?
Chicago and Sydney Kingsford Smith are 14866.2 km apart from one another. A reasonable flight in good conditions will take 25h 04m.
When did momondo last update prices for flights from Chicago to Sydney Kingsford Smith Airport?
Prices for flights from Chicago to Sydney Kingsford Smith Airport were last updated today.
How many operators does momondo search for flights from Chicago to Sydney Kingsford Smith Airport?
As of January 2026, there is 1 operator available to choose from for flights from Chicago to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Chicago to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago 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 to Sydney?
momondo data reveals that the most frequently booked airline on the route from Chicago to Sydney is Qantas Airways, representing 100% of all bookings.

Best airlines flying from Chicago to Sydney

Compare and see reviews for airlines that fly from Chicago to Sydney with momondo

Airline	Rating	Free cancellation	Price
Qantas Airways	PriceFrom $1,294	Free cancellation	Rating 7.5 973 reviews		Search Qantas Airways flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Leura

Manly

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?

It is quick and easy to find Chicago to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

Yes. momondo enables you to select and highlight flights to Sydney from Chicago with this policy.

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.