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 November 2025, there are 2 operators 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.

$713 Cheap Flights from Chicago to Sydney in 2025/26

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 $1,394 to $2,538. The lowest price recently found on this route was $1,384.

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Find the cheapest flights from Chicago to Sydney

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One-way

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Enter your travel dates to find the best prices.

18:40 - 09:00ORD-SYD

21h 20m1 stop

07:05 - 16:39SYD-ORD

26h 34m2 stops

$1,384Qantas Airways

Find Deal

Tue, 10 Feb - Tue, 24 Feb

18:40 - 09:00ORD-SYD

21h 20m1 stop

07:05 - 16:39SYD-ORD

26h 34m2 stops

$1,385Qantas Airways

Find Deal

Wed, 11 Feb - Wed, 25 Feb

18:40 - 09:00ORD-SYD

21h 20m1 stop

07:05 - 14:57SYD-ORD

24h 52m2 stops

$1,462Qantas Airways

Find Deal

Thu, 29 Jan - Sat, 7 Feb

09:02 - 09:00ORD-SYD

30h 58m1 stop

07:05 - 17:41SYD-ORD

27h 36m2 stops

$1,464Qantas Airways

Find Deal

Wed, 11 Feb - Fri, 27 Feb

21:00 - 09:00ORD-SYD

43h 00m1 stop

07:05 - 17:41SYD-ORD

27h 36m2 stops

$1,477Qantas Airways

Find Deal

Thu, 12 Feb - Fri, 27 Feb

15:10 - 09:00ORD-SYD

24h 50m1 stop

07:05 - 21:23SYD-ORD

31h 18m2 stops

$1,480Qantas Airways

Find Deal

Tue, 27 Jan - Sun, 1 Feb

06:15 - 07:25MDW-SYD

32h 10m2 stops

17:45 - 08:46SYD-MDW

32h 01m2 stops

$1,690Multiple Airlines

Find Deal

Mon, 8 Dec - Mon, 15 Dec

13:26 - 06:50MDW-SYD

24h 24m2 stops

10:40 - 17:37SYD-MDW

23h 57m2 stops

$2,256Delta

Find Deal

Tue, 10 Feb - Tue, 24 Feb

12:48 - 08:30MDW-SYD

26h 42m2 stops

10:40 - 17:45SYD-MDW

24h 05m2 stops

$2,333Delta

Find Deal

Wed, 11 Feb - Thu, 26 Feb

14:00 - 06:35MDW-SYD

25h 35m2 stops

09:25 - 18:05SYD-MDW

23h 40m2 stops

$2,410Delta

Find Deal

Sat, 4 Apr - Sat, 25 Apr

Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets

Qantas Airways

10 Feb

ORD18:40Chicago O'Hare Intl

21h 20m

1 stop

SYD09:00Sydney Kingsford Smith

24 Feb

SYD07:05Sydney Kingsford Smith

26h 34m

2 stops

ORD16:39Chicago O'Hare Intl

$1,384

Find similar

Qantas Airways

11 Feb

ORD18:40Chicago O'Hare Intl

21h 20m

1 stop

SYD09:00Sydney Kingsford Smith

25 Feb

SYD07:05Sydney Kingsford Smith

26h 34m

2 stops

ORD16:39Chicago O'Hare Intl

$1,385

Find similar

Qantas Airways

11 Feb

ORD15:10Chicago O'Hare Intl

24h 50m

1 stop

SYD09:00Sydney Kingsford Smith

26 Feb

SYD07:05Sydney Kingsford Smith

27h 36m

2 stops

ORD17:41Chicago O'Hare Intl

$1,462

Find similar

ANA flights from Chicago to Sydney

Our best ANA deals on Chicago to Sydney flight tickets

ANA

2 Mar

ORD16:25Chicago O'Hare Intl

25h 05m

1 stop

SYD10:30Sydney Kingsford Smith

10 Mar

SYD12:25Sydney Kingsford Smith

32h 53m

2 stops

ORD05:18Chicago O'Hare Intl

$1,838

Find similar

ANA

2 Mar

ORD18:31Chicago O'Hare Intl

32h 44m

2 stops

SYD20:15Sydney Kingsford Smith

10 Mar

SYD12:25Sydney Kingsford Smith

32h 53m

2 stops

ORD05:18Chicago O'Hare Intl

$1,845

Find similar

ANA

5 May

ORD20:00Chicago O'Hare Intl

32h 15m

2 stops

SYD19:15Sydney Kingsford Smith

26 May

SYD20:55Sydney Kingsford Smith

26h 45m

1 stop

ORD08:40Chicago O'Hare Intl

$1,911

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 10/2

18:40-09:00

1 stop21h 20m

Sydney Kingsford Smith

Tue 24/2

07:05-16:39

2 stops26h 34m

$1,384

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 11/2

18:40-09:00

1 stop21h 20m

Sydney Kingsford Smith

Wed 25/2

07:05-16:39

2 stops26h 34m

$1,385

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 29/1

18:40-09:00

1 stop21h 20m

Sydney Kingsford Smith

Sat 7/2

07:05-14:57

2 stops24h 52m

$1,462

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 11/2

09:02-09:00

1 stop30h 58m

Sydney Kingsford Smith

Fri 27/2

07:05-17:41

2 stops27h 36m

$1,464

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 12/2

21:00-09:00

1 stop43h 00m

Sydney Kingsford Smith

Fri 27/2

07:05-17:41

2 stops27h 36m

$1,477

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 27/1

15:10-09:00

1 stop24h 50m

Sydney Kingsford Smith

Sun 1/2

07:05-21:23

2 stops31h 18m

$1,480

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Mon 8/12

06:15-07:25

2 stops32h 10m

Sydney Kingsford Smith

Mon 15/12

17:45-08:46

2 stops32h 01m

$1,690

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Tue 10/2

13:26-06:50

2 stops24h 24m

Sydney Kingsford Smith

Tue 24/2

10:40-17:37

2 stops23h 57m

$2,256

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Wed 11/2

12:48-08:30

2 stops26h 42m

Sydney Kingsford Smith

Thu 26/2

10:40-17:45

2 stops24h 05m

$2,333

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Sat 4/4

14:00-06:35

2 stops25h 35m

Sydney Kingsford Smith

Sat 25/4

09:25-18:05

2 stops23h 40m

$2,410

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 August is, on average, the cheapest month to fly to Sydney from Chicago, with most prices found around $1,310. If you aren’t able to travel to Sydney during the month of August, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,330.

What is the cheapest day to depart on your flight to Sydney?

Our data shows that Sunday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,817. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,495.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from Chicago to Sydney in the afternoon for as low as $2,125. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are $3,249 on average. Flights to Sydney from Chicago at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 $1,612 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 $1,305 on momondo.

Can stopping save me money on Chicago to Sydney flights?

You could potentially save up to 38% 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 November 2025, prices for Chicago to Sydney flights are approximately 52% 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

Direct flights	None

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 November 2025, there are 2 operators 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
American Airlines	PriceFrom $1,319	Free cancellation	Rating 7.2 11,046 reviews		Search American Airlines flights
Qantas Airways	PriceFrom $1,345	Free cancellation	Rating 7.5 942 reviews		Search Qantas Airways flights

Parramatta

Wollongong

Terrigal

Penrith

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.

An easier way to manage your Sydney trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Start using Trips

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Cheap flights from Chicago to Sydney from $713

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Sydney departing on 5/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Chicago to Sydney

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets

ANA flights from Chicago to Sydney

Our best ANA deals on Chicago to Sydney flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Chicago to Sydney that are best for you.

See travel insights to Sydney from

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

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 August is, on average, the cheapest month to fly to Sydney from Chicago, with most prices found around $1,310. If you aren’t able to travel to Sydney during the month of August, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,330.

What is the cheapest day to depart on your flight to Sydney?

Our data shows that Sunday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,817. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,495.

What is the cheapest time of day to depart on your flight to Sydney?

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

Can stopping save me money on Chicago to Sydney flights?

You could potentially save up to 38% 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 November 2025, prices for Chicago to Sydney flights are approximately 52% cheaper when compared to flights at the same time last year.

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 to book flights from Chicago to Sydney

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

Direct flights

How far is Chicago to Sydney Kingsford Smith by plane?

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

How many operators does momondo search 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?

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

What is the most popular airline from Chicago to Sydney?

Best airlines flying from Chicago to Sydney

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

Travelling to a place near Sydney?

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Sydney?

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

How can momondo help me find flights from Chicago to Sydney?

I’m not ready to book a flight from Chicago to Sydney right now. Can momondo alert me if prices change?

An easier way to manage your Sydney trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales