What are the cheapest airlines flying from Chicago to Sydney round-trip?

Cheapflights users have booked flights from Chicago to Sydney round-trip from $1,287. Other airlines that can offer you cheap pricing are British Airways, from $1,290, and American Airlines, from $1,293. Qantas Airways is currently priced 30% below the average price you’ll pay for this route. Find deals

What are the cheapest airlines to fly from Chicago to Sydney one-way?

$561 is the cheapest one-way deal found within the past few days, from ANA. You may also be able to find cheap deals on American Airlines and Qantas Airways, with prices starting from $621 and $622, respectively. Find deals

What is the cheapest day to fly from Chicago to Sydney?

Travellers seeking maximum savings on their Chicago to Sydney flight should consider departing on Sunday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Chicago to Sydney?

The most popular airlines flying from Chicago to Sydney are Air Canada, Qantas Airways and United Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly return from Chicago to Sydney?

Saturday is generally a great day to depart. Flying on this day could help you save up to 37%.

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

Travellers have found it’s best to book a flight 47 days in advance to save up to 38% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 47 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Chicago to Sydney 1-2 weeks in advance for as low as $1,560, or $2,128 for flights within the next 24 hours.

What is the cheapest month to fly from Chicago to Sydney?

Flights from Chicago to Sydney lean towards being more expensive in December. Prices are generally better when you fly from Chicago to Sydney in August, with the cheapest ticket starting at $1,206.

What airport do you fly into for flights to Sydney from Chicago?

For a flight from Chicago to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre vof the city. Kingsford Smith is the only Sydney airport and it handles 0 inbound flights from Chicago per day. 3 airlines have flights to Sydney Kingsford Smith from Chicago on a regular basis.

Can I find deals for flights from Chicago to Sydney that include hotel bookings?

Yes. In addition to deals on Chicago to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Chicago to Sydney?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Sydney.

Can I find deals for business class flights from Chicago to Sydney?

Yes. Cheapflights offers flight deals from Chicago to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$561+ Flights from Chicago to Sydney

The best prices from Chicago to Sydney Kingsford Smith are usually found in August or March, booked 82 days in advance, depart on a Sunday or Monday and return on a Tuesday

Cheap flight deals from Chicago to Sydney

Round-trip from	$1,287
One-way from	$561
Popular in	December
Cheapest in	August
Average price	$1,466

Qantas Airways
8/3-18/3
2 total stops
62h 45m total
Chicago to Sydney

Search Deals

ANA
6/4
1 total stop
34h 30m total
Chicago to Sydney

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($287 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($89 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Find flight deals from Chicago to Sydney

Cheapest flights from Chicago to Sydney
Explore the most affordable flight options available from Chicago to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Sat 8/320:20ORD - SYD

1 stop42h 05mQantas Airways

Tue 18/311:15SYD - ORD

1 stop20h 40mQantas Airways

Deal found 20/2$1,287

Fri 18/408:25ORD - SYD

1 stop31h 10mBritish Airways

Wed 30/417:35SYD - ORD

1 stop26h 38mBritish Airways

Deal found 20/2$1,290

Tue 29/415:17ORD - SYD

1 stop24h 18mAmerican Airlines

Sun 11/517:35SYD - ORD

1 stop26h 35mAmerican Airlines

Deal found 21/2$1,293

Sat 2/819:40ORD - SYD

2 stops32h 35mMultiple Airlines

Sat 9/809:10SYD - ORD

1 stop21h 26mMultiple Airlines

Deal found 20/2$1,295

Wed 1/1015:50ORD - SYD

2 stops23h 45mDelta

Sun 26/1010:05SYD - ORD

2 stops27h 55mDelta

Deal found 19/2$1,449

Wed 1/1009:30MDW - SYD

2 stops30h 05mDelta

Tue 28/1010:05SYD - MDW

2 stops23h 58mDelta

Deal found 19/2$1,449

Sat 29/1116:25ORD - SYD

1 stop34h 50mANA

Tue 9/1212:25SYD - ORD

1 stop42h 25mANA

Deal found 19/2$1,478

Tue 19/818:53ORD - SYD

2 stops36h 17mFiji Airways

Sat 30/813:45SYD - ORD

2 stops22h 15mFiji Airways

Deal found 21/2$1,858

Mon 2/616:40ORD - SYD

2 stops25h 05mAir New Zealand

Sun 8/618:20SYD - ORD

2 stops43h 44mAir New Zealand

Deal found 20/2$1,939

Tue 25/216:07MDW - SYD

2 stops36h 43mMultiple Airlines

Tue 4/311:50SYD - MDW

1 stop41h 21mMultiple Airlines

Deal found 20/2$3,355

Wed 10/913:05MDW - SYD

2 stops37h 10mLATAM Airlines

Wed 24/911:50SYD - MDW

3 stops39h 05mLATAM Airlines

Deal found 20/2$5,323

Best flights from Chicago to Sydney
Discover carefully curated flight deals from Chicago to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Sat 8/320:20ORD - SYD

1 stop42h 05mQantas Airways

Tue 18/311:15SYD - ORD

1 stop20h 40mQantas Airways

Deal found 20/2$1,287

Fri 18/408:25ORD - SYD

1 stop31h 10mBritish Airways

Wed 30/417:35SYD - ORD

1 stop26h 38mBritish Airways

Deal found 20/2$1,290

Tue 29/415:17ORD - SYD

1 stop24h 18mAmerican Airlines

Sun 11/517:35SYD - ORD

1 stop26h 35mAmerican Airlines

Deal found 21/2$1,293

Sat 2/819:40ORD - SYD

2 stops32h 35mMultiple Airlines

Sat 9/809:10SYD - ORD

1 stop21h 26mMultiple Airlines

Deal found 20/2$1,295

Wed 30/415:02MDW - SYD

2 stops24h 33mDelta

Sun 11/509:25SYD - MDW

2 stops24h 05mDelta

Deal found 21/2$1,450

Tue 19/818:53ORD - SYD

2 stops36h 17mFiji Airways

Sat 30/813:45SYD - ORD

2 stops22h 15mFiji Airways

Deal found 21/2$1,858

Wed 18/616:40ORD - SYD

2 stops25h 05mAir New Zealand

Wed 9/711:50SYD - ORD

2 stops24h 43mAir New Zealand

Deal found 21/2$1,888

Tue 1/709:00ORD - SYD

2 stops31h 20mAir Canada

Mon 7/709:20SYD - ORD

2 stops37h 39mAir Canada

Deal found 20/2$2,032

Mon 10/312:15ORD - SYD

2 stops27h 30mDelta

Tue 18/310:05SYD - ORD

2 stops22h 10mDelta

Deal found 21/2$1,469

Sat 7/615:45MDW - SYD

2 stops34h 30mLATAM Airlines

Fri 20/612:10SYD - MDW

2 stops36h 08mLATAM Airlines

Deal found 20/2$5,574

Sat 8/305:30MDW - SYD

2 stops32h 55mMultiple Airlines

Mon 17/311:50SYD - MDW

1 stop42h 09mMultiple Airlines

Deal found 21/2$3,639

Last-minute flights from Chicago to Sydney
Discover last-minute flight deals from Chicago to Sydney. Data last updated 21 February 2025 and is based on user searches.

Tue 25/216:55ORD - SYD

2 stops35h 55mFiji Airways

Tue 4/306:15SYD - ORD

2 stops30h 02mFiji Airways

Deal found 20/2$1,897

Tue 25/216:07MDW - SYD

2 stops36h 43mMultiple Airlines

Tue 4/311:50SYD - MDW

1 stop41h 21mMultiple Airlines

Deal found 20/2$3,355

Wed 26/213:50ORD - SYD

2 stops23h 45mAmerican Airlines

Sat 8/311:50SYD - ORD

2 stops21h 43mAmerican Airlines

Deal found 20/2$1,317

Wed 26/209:35ORD - SYD

2 stops30h 00mDelta

Tue 11/310:05SYD - ORD

2 stops22h 10mDelta

Deal found 20/2$1,469

Wed 26/209:33MDW - SYD

2 stops30h 02mDelta

Sat 8/311:05SYD - MDW

2 stops23h 38mDelta

Deal found 20/2$2,477

Wed 26/209:50ORD - SYD

2 stops30h 45mAir Canada

Mon 10/311:20SYD - ORD

1 stop41h 24mAir Canada

Deal found 20/2$2,679

Thu 27/220:30ORD - SYD

2 stops53h 35mTurkish Airlines

Fri 7/321:00SYD - ORD

2 stops54h 10mTurkish Airlines

Deal found 20/2$2,314

Fri 28/217:40ORD - SYD

1 stop22h 20mQantas Airways

Sat 8/311:50SYD - ORD

1 stop19h 10mQantas Airways

Deal found 20/2$1,389

Fri 28/215:17ORD - SYD

3 stops36h 23mAir Tahiti Nui

Sun 9/307:05SYD - ORD

3 stops44h 43mAir Tahiti Nui

Deal found 20/2$3,490

Fri 28/215:17ORD - SYD

2 stops36h 03mChina Southern

Sun 9/322:10SYD - ORD

3 stops48h 23mChina Southern

Deal found 20/2$3,720

Sat 1/316:55ORD - SYD

2 stops26h 35mFiji Airways

Tue 11/314:00SYD - ORD

2 stops25h 59mFiji Airways

Deal found 20/2$2,328

Sun 2/311:35ORD - SYD

1 stop26h 50mMultiple Airlines

Mon 10/317:25SYD - ORD

1 stop21h 41mMultiple Airlines

Deal found 20/2$2,251

One-way flights from Chicago to Sydney
Search for one-way flight options from Chicago to Sydney. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Sun 6/417:45ORD - SYD

1 stop34h 30mANA

Deal found 20/2$561

Sat 24/509:54ORD - SYD

1 stop29h 41mAmerican Airlines

Deal found 20/2$621

Sat 21/611:55ORD - SYD

1 stop28h 10mQantas Airways

Deal found 20/2$622

Sun 23/315:16ORD - SYD

2 stops26h 34mMultiple Airlines

Deal found 21/2$693

Wed 4/608:40ORD - SYD

2 stops31h 40mAir Canada

Deal found 20/2$1,157

Wed 28/519:59ORD - SYD

2 stops32h 46mAlaska Airlines

Deal found 20/2$1,229

Wed 28/509:20MDW - SYD

2 stops30h 15mDelta

Deal found 20/2$1,315

Fri 28/220:14MDW - SYD

2 stops30h 31mMultiple Airlines

Deal found 20/2$1,356

Wed 30/701:30ORD - SYD

1 stop37h 50mJapan Airlines

Deal found 20/2$1,754

Mon 14/413:26ORD - SYD

3 stops38h 49mSingapore Airlines

Deal found 21/2$4,667

Mon 14/412:06ORD - SYD

3 stops53h 19mChina Southern

Deal found 20/2$4,868

Thu 20/307:09ORD - SYD

2 stops58h 21mPhilippine Airlines

Deal found 21/2$5,738

Find flights from Chicago to Sydney within your budget

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 8/3

20:20-07:25

1 stop42h 05m

Sydney Kingsford Smith

Tue 18/3

11:15-15:55

1 stop20h 40m

$1,287

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 8/3

18:45-06:35

1 stop42h 50m

Sydney Kingsford Smith

Sat 15/3

17:25-23:59

1 stop22h 34m

$1,292

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 29/4

10:34-06:35

2 stops29h 01m

Sydney Kingsford Smith

Sun 11/5

20:25-05:10

2 stops23h 45m

$1,293

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 2/8

19:40-19:15

2 stops32h 35m

Sydney Kingsford Smith

Sat 9/8

09:10-15:36

1 stop21h 26m

$1,295

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Wed 30/4

15:02-06:35

2 stops24h 33m

Sydney Kingsford Smith

Sun 11/5

09:25-18:30

2 stops24h 05m

$1,450

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 10/3

12:15-07:45

2 stops27h 30m

Sydney Kingsford Smith

Tue 18/3

10:05-16:15

2 stops22h 10m

$1,469

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 19/8

18:53-22:10

2 stops36h 17m

Sydney Kingsford Smith

Sat 30/8

13:45-21:00

2 stops22h 15m

$1,858

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Wed 18/6

16:40-08:45

2 stops25h 05m

Sydney Kingsford Smith

Wed 9/7

11:50-21:33

2 stops24h 43m

$1,888

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 1/7

09:00-07:20

2 stops31h 20m

Sydney Kingsford Smith

Mon 7/7

09:20-07:59

2 stops37h 39m

$2,032

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Sat 8/3

05:30-07:25

2 stops32h 55m

Sydney Kingsford Smith

Mon 17/3

11:50-13:59

1 stop42h 09m

$3,639

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 25 results

Best time to book a flight from Chicago to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Chicago with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Chicago to Sydney

Get recent, data-driven insights about flights from Chicago to Sydney including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chicago to Sydney?

To ensure you get the cheapest price possible for a flight from Chicago to Sydney, you should look to book at least 82 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago to Sydney?

Currently, May is the cheapest month in which you can book a flight from Chicago to Sydney (average of $129). Flying from Chicago to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to SYD?

When flying from Chicago to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 35% versus a flight at midday.

Rainfall in Sydney by month

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Sydney

See what other customers who have flown with Air Tahiti Nui, ANA and Japan Airlines from Chicago to Sydney have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui

8.7

Very Good

61 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

ANA

8.4

Very Good

836 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Japan Airlines

8.3

Very Good

1,440 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Singapore Airlines

8.1

Very Good

1,297 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Fiji Airways

8.0

Very Good

184 reviews

Air Tahiti Nui

8.7

Very Good

61 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Related info for your journey

What airport do you fly into for flights to Sydney from Chicago?
For a flight from Chicago to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre vof the city. Kingsford Smith is the only Sydney airport and it handles 0 inbound flights from Chicago per day. 3 airlines have flights to Sydney Kingsford Smith from Chicago on a regular basis.
What are the cheapest airlines flying from Chicago to Sydney round-trip?
Cheapflights users have booked flights from Chicago to Sydney round-trip from $1,287. Other airlines that can offer you cheap pricing are British Airways, from $1,290, and American Airlines, from $1,293. Qantas Airways is currently priced 30% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Chicago to Sydney one-way?
$561 is the cheapest one-way deal found within the past few days, from ANA. You may also be able to find cheap deals on American Airlines and Qantas Airways, with prices starting from $621 and $622, respectively.
Can I find deals for flights from Chicago to Sydney that include hotel bookings?
Yes. In addition to deals on Chicago to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Chicago to Sydney?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Sydney.
Can I find deals for business class flights from Chicago to Sydney?
Yes. Cheapflights offers flight deals from Chicago to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Chicago to Sydney?
Currently, May is the cheapest month in which you can book a flight from Chicago to Sydney (average of $129). Flying from Chicago to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Parramatta

Wollongong

Katoomba

Randwick

Manly

Penrith

Coogee

Cronulla

Terrigal

Bondi Beach

Lithgow

Leura

Swansea

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Alternative routes for Chicago to Sydney

O'Hare Intl to Sydney flights

Midway to Sydney flights

St. Louis to Sydney flights

Other flights to Sydney

Top 3 airlines flying from Chicago to Sydney

Airline	Cheapest	Average	Flexibility	On-time
Qantas Airways	Cheapest$1,338	Average$1,443	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Air Canada	Cheapest$1,773	Average$1,917	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,886	Average$2,522	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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How does Cheapflights help users find flights from Chicago to Sydney?

Deals for Chicago to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Chicago to Sydney?

Cheapflights helps you find that perfect flight to Sydney from Chicago by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Chicago to Sydney with no change fees?

Yes, we can. To see specific flights from Chicago to Sydney with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Chicago to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Chicago to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Chicago to Sydney from $561

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Chicago to Sydney Kingsford Smith are usually found in August or March, booked 82 days in advance, depart on a Sunday or Monday and return on a Tuesday

Cheap flight deals from Chicago to Sydney

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Chicago to Sydney

Cheapest flights from Chicago to SydneyExplore the most affordable flight options available from Chicago to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Explore the most affordable flight options available from Chicago to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Find flights from Chicago to Sydney within your budget

Best time to book a flight from Chicago to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Chicago with our price prediction graph.

Travel insights for flights from Chicago to Sydney

Get recent, data-driven insights about flights from Chicago to Sydney including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chicago to Sydney?

Use this chart to determine the optimal time to book a return flight from Chicago to Sydney. Price data was last updated on 14 February 2025.

What is the cheapest month to book a flight from Chicago to Sydney?

What is the cheapest time of day to fly from CHI to SYD?

Find hourly flight availability from Chicago to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

Reviews of airlines servicing Sydney

See what other customers who have flown with Air Tahiti Nui, ANA and Japan Airlines from Chicago to Sydney have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Sydney from Chicago?

What are the cheapest airlines flying from Chicago to Sydney round-trip?

What are the cheapest airlines to fly from Chicago to Sydney one-way?

Can I find deals for flights from Chicago to Sydney that include hotel bookings?

How can I find direct flights from Chicago to Sydney?

Can I find deals for business class flights from Chicago to Sydney?

What is the cheapest month to book a flight from Chicago to Sydney?

Travelling to a place near Chicago?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Chicago to Sydney

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chicago to Sydney?

Why should you use Cheapflights to find cheap flight tickets from Chicago to Sydney?

Can Cheapflights find flights from Chicago to Sydney with no change fees?

Can Cheapflights notify me if prices for flights from Chicago to Sydney become cheaper?

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Cheapest flights from Chicago to Sydney
Explore the most affordable flight options available from Chicago to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.