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Cheap flights from Chicago to Sydney from $735

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SYD
24 Dec — 31 Dec1
1 adult

The best prices from Chicago to Sydney Kingsford Smith are usually found in March or February, booked 85 days in advance, depart on a Sunday or Monday and return on a Tuesday

Cheap flight deals from Chicago to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 19 December 2024.

Round-trip from

$1,375

One-way from

$735

Popular in

December

Cheapest in

March

Average price

$2,559
American Airlines
  • American Airlines
  • 17/2-22/2
  • 2 total stops
  • 41h 45m total
  • Chicago to Sydney
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American Airlines
  • American Airlines
  • 4/2
  • 2 total stops
  • 22h 25m total
  • Chicago to Sydney
Search Deals
High demand for flights, 8% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in December 2024
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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 19 December 2024.

Fri 27/1208:38ORD - SYD
1 stop28h 32mAmerican Airlines
Fri 10/117:25SYD - ORD
1 stop28h 40mAmerican Airlines
Deal found 18/12$1,375
Sun 22/1220:25ORD - SYD
1 stop43h 35mQantas Airways
Wed 22/111:15SYD - ORD
1 stop21h 44mQantas Airways
Deal found 18/12$1,573
Sun 22/1220:25ORD - SYD
1 stop43h 35mMultiple Airlines
Wed 22/111:20SYD - ORD
3 stops49h 35mMultiple Airlines
Deal found 18/12$2,626
Fri 27/1220:25ORD - SYD
2 stops44h 10mAir Canada
Thu 16/116:00SYD - ORD
2 stops35h 54mAir Canada
Deal found 18/12$2,675
Thu 26/1212:45ORD - SYD
1 stop27h 30mUnited Airlines
Sun 12/116:15SYD - ORD
1 stop24h 04mUnited Airlines
Deal found 18/12$2,788
Mon 30/1209:30MDW - SYD
2 stops30h 05mDelta
Thu 16/111:05SYD - MDW
2 stops28h 15mDelta
Deal found 18/12$2,808
Sun 29/1213:55ORD - SYD
2 stops23h 55mDelta
Fri 24/111:05SYD - ORD
2 stops23h 20mDelta
Deal found 18/12$4,299
Sun 22/1213:55ORD - SYD
1 stop26h 10mAir New Zealand
Tue 24/1211:45SYD - ORD
2 stops29h 14mAir New Zealand
Deal found 18/12$4,386
Sun 22/1217:03MDW - SYD
2 stops44h 52mKorean Air
Wed 22/109:10SYD - MDW
2 stops44h 58mKorean Air
Deal found 18/12$5,375
Sun 22/1211:00ORD - SYD
1 stop28h 10mAir India
Tue 24/1210:25SYD - ORD
1 stop37h 05mAir India
Deal found 18/12$5,615
Sun 22/1219:05ORD - SYD
1 stop30h 45mQatar Airways
Tue 24/1221:40SYD - ORD
1 stop33h 50mQatar Airways
Deal found 18/12$5,653
Tue 24/1210:05ORD - SYD
3 stops38h 35mAir Tahiti Nui
Sat 11/117:50SYD - ORD
3 stops42h 41mAir Tahiti Nui
Deal found 18/12$6,001

Find flights from Chicago to Sydney within your budget

Customise your flight search to find flights from Chicago to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 19 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 17/2

15:19-06:35

1 stop22h 16m

Sydney Kingsford Smith

Sat 22/2

11:50-14:19

1 stop19h 29m

$1,375

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 17/1

17:40-09:00

1 stop22h 20m

Sydney Kingsford Smith

Fri 31/1

11:15-19:31

1 stop25h 16m

$1,386

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 17/1

17:40-09:00

1 stop22h 20m

Sydney Kingsford Smith

Fri 24/1

11:50-15:26

1 stop20h 36m

$1,399

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 1/2

17:40-12:25

2 stops25h 45m

Sydney Kingsford Smith

Sat 8/2

20:35-09:26

2 stops29h 51m

$1,521

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 10/5

07:15-19:15

2 stops45h 00m

Sydney Kingsford Smith

Sat 17/5

20:55-04:59

2 stops47h 04m

$1,573

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 11/2

16:55-12:30

2 stops26h 35m

Sydney Kingsford Smith

Tue 24/6

13:15-20:23

2 stops22h 08m

$1,894

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 2/2

11:35-09:35

2 stops29h 00m

Sydney Kingsford Smith

Tue 25/2

11:20-19:55

2 stops25h 35m

$1,970

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 18/2

19:00-19:45

2 stops31h 45m

Sydney Kingsford Smith

Fri 28/2

21:40-17:00

2 stops36h 20m

$2,072

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 11/2

12:55-09:05

1 stop27h 10m

Sydney Kingsford Smith

Tue 25/2

11:50-14:55

1 stop20h 05m

$2,232

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 21/1

11:55-19:00

2 stops38h 05m

Sydney Kingsford Smith

Thu 13/2

21:00-18:35

2 stops38h 35m

$2,238

Flights are sorted by cheapest return flights first.

Deals found on 18/12

Showing 1-10 of 31 results
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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?

Use this chart to determine the optimal time to book a return flight from Chicago to Sydney. Price data was last updated on 13 December 2024.

To ensure you get the cheapest price possible for a flight from Chicago to Sydney, you should look to book at least 85 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?

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 19 December 2024.

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

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

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

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 19 December 2024.
See what other customers who have flown with ANA, American Airlines and Qantas Airways 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
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Entertainment

7.2

Boarding

8.5

Comfort

8.0

Food

7.7

Overall

8.6

Reviews

1 / 2

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
8.6
Very Good
65 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Entertainment

7.2

Boarding

8.5

Comfort

8.0

Food

7.7

Overall

8.6

Reviews

1 / 2

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.

ANA
8.4
Very Good
839 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Entertainment

7.2

Boarding

8.5

Comfort

8.0

Food

7.7

Overall

8.6

Reviews

1 / 2

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.

Korean Air
8.4
Very Good
1,021 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Entertainment

7.2

Boarding

8.5

Comfort

8.0

Food

7.7

Overall

8.6

Reviews

1 / 2

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.

Fiji Airways
8.1
Very Good
191 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Entertainment

7.2

Boarding

8.5

Comfort

8.0

Food

7.7

Overall

8.6

Reviews

1 / 2

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.

Delta
8.0
Very Good
8,604 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Entertainment

7.2

Boarding

8.5

Comfort

8.0

Food

7.7

Overall

8.6

Reviews

1 / 2

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.

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?

    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 $1,375. Other airlines that can offer you cheap pricing are Qantas Airways, from $1,386, and Royal Air Maroc, from $1,521. American Airlines is currently priced 35% below the average price you’ll pay for this route.

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

    $735 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Fiji Airways and Qantas Airways, with prices starting from $1,002 and $1,054, 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

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Alternative routes for Chicago to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Sydney flights
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Top 3 airlines flying from Chicago to Sydney

Discover the top 3 airlines that operate flights from Chicago to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 19 December 2024.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,447Average$1,543FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,533Average$1,874FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,790Average$2,290FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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