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.

$714 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 $1,240 to $1,585. The lowest price recently found on this route was $1,361.

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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.

14:33 - 09:00

ORD

SYD

25h 27m

1 stop

07:05 - 14:53

SYD

ORD

24h 48m

2 stops

$1,361Qantas Airways

Tue, 17 Feb - Wed, 4 Mar

13:24 - 09:00

ORD

SYD

26h 36m

1 stop

19:15 - 14:53

SYD

ORD

36h 38m

2 stops

$1,391Qantas Airways

Mon, 23 Feb - Mon, 2 Mar

17:10 - 20:50

ORD

SYD

34h 40m

2 stops

11:20 - 14:53

SYD

ORD

20h 33m

1 stop

$1,393Qantas Airways

Wed, 11 Feb - Sun, 1 Mar

15:23 - 20:50

ORD

SYD

36h 27m

2 stops

11:20 - 14:53

SYD

ORD

20h 33m

1 stop

$1,396Qantas Airways

Wed, 11 Feb - Sat, 28 Feb

18:40 - 17:40

ORD

SYD

30h 00m

2 stops

11:20 - 17:45

SYD

ORD

22h 25m

1 stop

$1,409Qantas Airways

Sun, 8 Feb - Tue, 10 Mar

17:37 - 17:40

ORD

SYD

31h 03m

2 stops

11:20 - 14:53

SYD

ORD

20h 33m

1 stop

$1,410Qantas Airways

Sat, 7 Feb - Sat, 14 Feb

06:00 - 07:30

ORD

SYD

34h 30m

1 stop

13:15 - 06:46

SYD

ORD

32h 31m

2 stops

$1,513Multiple Airlines

Tue, 12 May - Thu, 21 May

10:48 - 06:50

MDW

SYD

27h 02m

2 stops

10:40 - 17:45

SYD

MDW

24h 05m

2 stops

$2,125Delta

Tue, 10 Feb - Tue, 3 Mar

13:26 - 06:50

MDW

SYD

24h 24m

2 stops

09:40 - 17:54

SYD

MDW

24h 14m

2 stops

$2,128Delta

Sun, 8 Feb - Tue, 10 Mar

12:45 - 08:30

MDW

SYD

26h 45m

2 stops

10:40 - 17:37

SYD

MDW

23h 57m

2 stops

$2,198Delta

Sun, 22 Feb - Fri, 6 Mar

Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets

Qantas Airways

1 Feb

ORD17:10Chicago O'Hare Intl

28h 40m

2 stops

SYD14:50Sydney Kingsford Smith

14 Feb

SYD11:20Sydney Kingsford Smith

27h 15m

1 stop

ORD21:35Chicago O'Hare Intl

$1,375

Qantas Airways

5 Feb

ORD18:40Chicago O'Hare Intl

27h 10m

2 stops

SYD14:50Sydney Kingsford Smith

16 May

SYD09:10Sydney Kingsford Smith

23h 36m

1 stop

ORD17:46Chicago O'Hare Intl

$1,377

Qantas Airways

23 Feb

ORD09:25Chicago O'Hare Intl

30h 35m

1 stop

SYD09:00Sydney Kingsford Smith

2 Mar

SYD19:15Sydney Kingsford Smith

36h 38m

2 stops

ORD14:53Chicago O'Hare Intl

$1,391

Delta flights from Chicago to Sydney

Our best Delta deals on Chicago to Sydney flight tickets

Delta

10 Feb

MDW10:48Chicago Midway

27h 02m

2 stops

SYD06:50Sydney Kingsford Smith

3 Mar

SYD10:40Sydney Kingsford Smith

24h 05m

2 stops

MDW17:45Chicago Midway

$2,125

Delta

8 Feb

MDW13:26Chicago Midway

24h 24m

2 stops

SYD06:50Sydney Kingsford Smith

10 Mar

SYD09:40Sydney Kingsford Smith

24h 14m

2 stops

MDW17:54Chicago Midway

$2,128

Delta

22 Feb

MDW12:45Chicago Midway

25h 05m

2 stops

SYD06:50Sydney Kingsford Smith

6 Mar

SYD10:40Sydney Kingsford Smith

24h 05m

2 stops

MDW17:45Chicago Midway

$2,198

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 17/2

14:33-09:00

1 stop25h 27m

Sydney Kingsford Smith

Wed 4/3

07:05-14:53

2 stops24h 48m

$1,361

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 23/2

13:24-09:00

1 stop26h 36m

Sydney Kingsford Smith

Mon 2/3

19:15-14:53

2 stops36h 38m

$1,391

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 11/2

17:10-20:50

2 stops34h 40m

Sydney Kingsford Smith

Sun 1/3

11:20-14:53

1 stop20h 33m

$1,393

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 11/2

15:23-20:50

2 stops36h 27m

Sydney Kingsford Smith

Sat 28/2

11:20-14:53

1 stop20h 33m

$1,396

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 8/2

18:40-17:40

2 stops30h 00m

Sydney Kingsford Smith

Tue 10/3

11:20-17:45

1 stop22h 25m

$1,409

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 7/2

17:37-17:40

2 stops31h 03m

Sydney Kingsford Smith

Sat 14/2

11:20-14:53

1 stop20h 33m

$1,410

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 12/5

06:00-07:30

1 stop34h 30m

Sydney Kingsford Smith

Thu 21/5

13:15-06:46

2 stops32h 31m

$1,513

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Tue 10/2

10:48-06:50

2 stops27h 02m

Sydney Kingsford Smith

Tue 3/3

10:40-17:45

2 stops24h 05m

$2,125

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Sun 8/2

13:26-06:50

2 stops24h 24m

Sydney Kingsford Smith

Tue 10/3

09:40-17:54

2 stops24h 14m

$2,128

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Sun 22/2

12:45-08:30

2 stops26h 45m

Sydney Kingsford Smith

Fri 6/3

10:40-17:37

2 stops23h 57m

$2,198

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 $1,250. 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 $1,254.

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 $1,589 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 $1,316 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	21h 20m
Direct flights	None

The fastest flight from Chicago to Sydney takes 21h 20m

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 21h 20m.
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 $1,263	Free cancellation	Rating 7.5 978 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.