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 February 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.

$703 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 low for flights on this route. Typical prices usually range from $1,332 to $2,036. The lowest price recently found on this route was $1,327.

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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.

13:24 - 09:00

ORD

SYD

26h 36m

1 stop

07:05 - 14:53

SYD

ORD

24h 48m

2 stops

$1,327Qantas Airways

Thu, 26 Feb - Tue, 3 Mar

16:45 - 07:25

ORD

SYD

21h 40m

1 stop

07:05 - 14:53

SYD

ORD

24h 48m

2 stops

$1,332Qantas Airways

Thu, 26 Feb - Tue, 3 Mar

16:45 - 07:25

ORD

SYD

21h 40m

1 stop

07:05 - 14:53

SYD

ORD

24h 48m

2 stops

$1,338Qantas Airways

Mon, 23 Feb - Tue, 3 Mar

16:49 - 07:35

ORD

SYD

45h 46m

2 stops

11:20 - 14:53

SYD

ORD

20h 33m

1 stop

$1,348Qantas Airways

Sat, 28 Feb - Fri, 6 Mar

09:25 - 09:00

ORD

SYD

30h 35m

1 stop

19:15 - 16:37

SYD

ORD

38h 22m

2 stops

$1,350Qantas Airways

Thu, 26 Feb - Tue, 3 Mar

18:49 - 20:50

ORD

SYD

34h 01m

2 stops

09:10 - 21:41

SYD

ORD

27h 31m

1 stop

$1,352Qantas Airways

Wed, 25 Mar - Mon, 6 Apr

06:00 - 07:30

ORD

SYD

34h 30m

1 stop

13:15 - 06:46

SYD

ORD

32h 31m

2 stops

$1,356Multiple Airlines

Fri, 15 May - Thu, 21 May

12:45 - 08:30

MDW

SYD

26h 45m

2 stops

09:15 - 18:36

SYD

MDW

24h 21m

2 stops

$1,949Delta

Wed, 4 Mar - Wed, 15 Apr

09:34 - 06:50

MDW

SYD

28h 16m

2 stops

10:40 - 17:37

SYD

MDW

23h 57m

2 stops

$2,019Delta

Sun, 22 Feb - Fri, 6 Mar

12:51 - 06:50

MDW

SYD

26h 59m

2 stops

09:15 - 17:56

SYD

MDW

23h 41m

2 stops

$2,071Delta

Mon, 11 May - Mon, 25 May

Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets

Qantas Airways

12 Feb

ORD16:45Chicago O'Hare Intl

23h 15m

1 stop

SYD09:00Sydney Kingsford Smith

27 Feb

SYD07:05Sydney Kingsford Smith

26h 32m

2 stops

ORD16:37Chicago O'Hare Intl

$1,322

Qantas Airways

16 Feb

ORD16:45Chicago O'Hare Intl

23h 15m

1 stop

SYD09:00Sydney Kingsford Smith

24 Feb

SYD07:05Sydney Kingsford Smith

24h 48m

2 stops

ORD14:53Chicago O'Hare Intl

$1,324

Qantas Airways

26 Feb

ORD13:24Chicago O'Hare Intl

26h 36m

1 stop

SYD09:00Sydney Kingsford Smith

3 Mar

SYD07:05Sydney Kingsford Smith

24h 48m

2 stops

ORD14:53Chicago O'Hare Intl

$1,327

Delta flights from Chicago to Sydney

Our best Delta deals on Chicago to Sydney flight tickets

Delta

17 Feb

MDW13:28Chicago Midway

24h 22m

2 stops

SYD06:50Sydney Kingsford Smith

8 Mar

SYD10:40Sydney Kingsford Smith

27h 51m

2 stops

MDW21:31Chicago Midway

$1,949

Delta

22 Feb

MDW09:34Chicago Midway

28h 16m

2 stops

SYD06:50Sydney Kingsford Smith

6 Mar

SYD10:40Sydney Kingsford Smith

23h 57m

2 stops

MDW17:37Chicago Midway

$2,019

Delta

16 Feb

MDW13:26Chicago Midway

26h 04m

2 stops

SYD08:30Sydney Kingsford Smith

11 Mar

SYD09:40Sydney Kingsford Smith

25h 00m

2 stops

MDW18:40Chicago Midway

$2,071

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 26/2

13:24-09:00

1 stop26h 36m

Sydney Kingsford Smith

Tue 3/3

07:05-14:53

2 stops24h 48m

$1,327

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 26/2

16:45-07:25

1 stop21h 40m

Sydney Kingsford Smith

Tue 3/3

07:05-14:53

2 stops24h 48m

$1,332

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 23/2

16:45-07:25

1 stop21h 40m

Sydney Kingsford Smith

Tue 3/3

07:05-14:53

2 stops24h 48m

$1,338

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 28/2

16:49-07:35

2 stops45h 46m

Sydney Kingsford Smith

Fri 6/3

11:20-14:53

1 stop20h 33m

$1,348

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 26/2

09:25-09:00

1 stop30h 35m

Sydney Kingsford Smith

Tue 3/3

19:15-16:37

2 stops38h 22m

$1,350

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 25/3

18:49-20:50

2 stops34h 01m

Sydney Kingsford Smith

Mon 6/4

09:10-21:41

1 stop27h 31m

$1,352

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 15/5

06:00-07:30

1 stop34h 30m

Sydney Kingsford Smith

Thu 21/5

13:15-06:46

2 stops32h 31m

$1,356

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Wed 4/3

12:45-08:30

2 stops26h 45m

Sydney Kingsford Smith

Wed 15/4

09:15-18:36

2 stops24h 21m

$1,949

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Sun 22/2

09:34-06:50

2 stops28h 16m

Sydney Kingsford Smith

Fri 6/3

10:40-17:37

2 stops23h 57m

$2,019

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Mon 11/5

12:51-06:50

2 stops26h 59m

Sydney Kingsford Smith

Mon 25/5

09:15-17:56

2 stops23h 41m

$2,071

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 October is, on average, the cheapest month to fly to Sydney from Chicago, with most prices found around $1,357. If you aren’t able to travel to Sydney during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,542.

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 $1,778 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 $1,478 on momondo.

Can stopping save me money on Chicago to Sydney flights?

You could potentially save up to 19% 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 February 2026, prices for Chicago to Sydney flights are approximately 33% 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	23h 15m
Direct flights	None

The fastest flight from Chicago to Sydney takes 23h 15m

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 23h 15m.
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 February 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 $1,199	Free cancellation	Rating 7.5 988 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?

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.