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.

$760 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 $1,492 to $2,336. The lowest price recently found on this route was $1,406.

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Find the cheapest flights from Chicago to Sydney

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One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

14:58 - 07:35

ORD

SYD

47h 37m

2 stops

11:20 - 15:36

SYD

ORD

21h 16m

1 stop

$1,406Qantas Airways

Fri, 20 Feb - Sun, 8 Mar

18:40 - 09:00

ORD

SYD

21h 20m

1 stop

19:15 - 16:37

SYD

ORD

38h 22m

2 stops

$1,407Qantas Airways

Mon, 9 Feb - Mon, 16 Feb

18:40 - 09:00

ORD

SYD

21h 20m

1 stop

19:15 - 14:53

SYD

ORD

36h 38m

2 stops

$1,428Qantas Airways

Wed, 4 Feb - Wed, 11 Feb

17:10 - 07:35

ORD

SYD

45h 25m

2 stops

11:20 - 16:36

SYD

ORD

21h 16m

1 stop

$1,430Qantas Airways

Sun, 8 Feb - Tue, 10 Mar

13:24 - 07:25

ORD

SYD

25h 01m

1 stop

07:05 - 14:53

SYD

ORD

24h 48m

2 stops

$1,431Qantas Airways

Thu, 12 Feb - Thu, 19 Feb

18:40 - 09:00

ORD

SYD

21h 20m

1 stop

19:15 - 14:53

SYD

ORD

36h 38m

2 stops

$1,436Qantas Airways

Sat, 7 Feb - Sat, 14 Feb

09:45 - 07:25

MDW

SYD

28h 40m

2 stops

11:20 - 23:41

SYD

MDW

29h 21m

2 stops

$1,989Multiple Airlines

Mon, 2 Feb - Thu, 12 Feb

12:47 - 06:05

MDW

SYD

25h 18m

2 stops

09:40 - 17:54

SYD

MDW

24h 14m

2 stops

$2,197Delta

Tue, 10 Mar - Tue, 24 Mar

14:05 - 07:25

MDW

SYD

25h 20m

2 stops

09:15 - 17:54

SYD

MDW

23h 39m

2 stops

$2,198Delta

Mon, 23 Mar - Wed, 8 Apr

13:49 - 08:30

MDW

SYD

25h 41m

2 stops

09:40 - 16:55

SYD

MDW

23h 15m

2 stops

$2,254Delta

Thu, 5 Mar - Wed, 18 Mar

Delta flights from Chicago to Sydney

Our best Delta deals on Chicago to Sydney flight tickets

Delta

10 Mar

MDW12:47Chicago Midway

25h 18m

2 stops

SYD06:05Sydney Kingsford Smith

24 Mar

SYD09:40Sydney Kingsford Smith

24h 14m

2 stops

MDW17:54Chicago Midway

$2,197

Delta

23 Mar

MDW14:05Chicago Midway

25h 20m

2 stops

SYD07:25Sydney Kingsford Smith

7 Apr

SYD09:15Sydney Kingsford Smith

23h 39m

2 stops

MDW17:54Chicago Midway

$2,198

Delta

5 Mar

MDW13:49Chicago Midway

25h 41m

2 stops

SYD08:30Sydney Kingsford Smith

18 Mar

SYD09:40Sydney Kingsford Smith

23h 15m

2 stops

MDW16:55Chicago Midway

$2,254

Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets

Qantas Airways

20 Feb

ORD14:58Chicago O'Hare Intl

47h 37m

2 stops

SYD07:35Sydney Kingsford Smith

6 Mar

SYD11:20Sydney Kingsford Smith

20h 33m

1 stop

ORD14:53Chicago O'Hare Intl

$1,406

Qantas Airways

26 Jan

ORD18:40Chicago O'Hare Intl

21h 20m

1 stop

SYD09:00Sydney Kingsford Smith

9 Feb

SYD19:15Sydney Kingsford Smith

37h 42m

2 stops

ORD15:57Chicago O'Hare Intl

$1,407

Qantas Airways

12 Feb

ORD13:24Chicago O'Hare Intl

25h 01m

1 stop

SYD07:25Sydney Kingsford Smith

19 Feb

SYD07:05Sydney Kingsford Smith

24h 48m

2 stops

ORD14:53Chicago O'Hare Intl

$1,431

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 20/2

14:58-07:35

2 stops47h 37m

Sydney Kingsford Smith

Sun 8/3

11:20-15:36

1 stop21h 16m

$1,406

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 9/2

18:40-09:00

1 stop21h 20m

Sydney Kingsford Smith

Mon 16/2

19:15-16:37

2 stops38h 22m

$1,407

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 4/2

18:40-09:00

1 stop21h 20m

Sydney Kingsford Smith

Wed 11/2

19:15-14:53

2 stops36h 38m

$1,428

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 8/2

17:10-07:35

2 stops45h 25m

Sydney Kingsford Smith

Tue 10/3

11:20-16:36

1 stop21h 16m

$1,430

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 12/2

13:24-07:25

1 stop25h 01m

Sydney Kingsford Smith

Thu 19/2

07:05-14:53

2 stops24h 48m

$1,431

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 7/2

18:40-09:00

1 stop21h 20m

Sydney Kingsford Smith

Sat 14/2

19:15-14:53

2 stops36h 38m

$1,436

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Mon 2/2

09:45-07:25

2 stops28h 40m

Sydney Kingsford Smith

Thu 12/2

11:20-23:41

2 stops29h 21m

$1,989

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Tue 10/3

12:47-06:05

2 stops25h 18m

Sydney Kingsford Smith

Tue 24/3

09:40-17:54

2 stops24h 14m

$2,197

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Mon 23/3

14:05-07:25

2 stops25h 20m

Sydney Kingsford Smith

Wed 8/4

09:15-17:54

2 stops23h 39m

$2,198

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Thu 5/3

13:49-08:30

2 stops25h 41m

Sydney Kingsford Smith

Wed 18/3

09:40-16:55

2 stops23h 15m

$2,254

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 $1,292. If you aren’t able to travel to Sydney during the month of June, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,292.

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 $1,640 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 $1,362 on momondo.

Can stopping save me money on Chicago to Sydney flights?

You could potentially save up to 37% 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	24h 21m
Direct flights	None

The fastest flight from Chicago to Sydney takes 24h 21m

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 24h 21m.
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 $1,307	Free cancellation	Rating 7.5 971 reviews		Search Qantas Airways flights

Parramatta

Wollongong

Penrith

Terrigal

Katoomba

Lithgow

Leura

Manly

Bondi Beach

Coogee

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.