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Cheap flights from Chicago O'Hare Intl Airport to Sydney from $739

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 24/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
23 dec — 30 dec1
1 adult

The best prices from Chicago O'Hare Intl to Sydney Kingsford Smith are usually found in May or March, booked 37 days in advance, depart on a Friday or Sunday and return on a Monday

Cheap flight deals from O'Hare Intl to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 18 december 2024.

Round-trip from

$1,374

One-way from

$739

Popular in

December

Cheapest in

May

Average price

$2,223
American Airlines
  • American Airlines
  • 20/1-31/1
  • 3 total stops
  • 44h 43m total
  • Chicago to Sydney
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American Airlines
  • American Airlines
  • 24/12
  • 1 total stop
  • 42h 00m 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 O'Hare Intl to Sydney

Cheapest flights from O'Hare Intl to Sydney
Explore the most affordable flight options available from O'Hare Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 december 2024.

mån 30/1217:10ORD - SYD
2 stops22h 50mAmerican Airlines
tors 16/111:50SYD - ORD
2 stops22h 57mAmerican Airlines
Deal found 18/12$1,386
mån 30/1219:18ORD - SYD
1 stop20h 42mQantas Airways
tors 9/107:05SYD - ORD
2 stops24h 20mQantas Airways
Deal found 16/12$1,818
tors 26/1211:45ORD - SYD
3 stops32h 15mMultiple Airlines
fre 31/106:15SYD - ORD
2 stops33h 58mMultiple Airlines
Deal found 16/12$2,344
mån 23/1218:28ORD - SYD
2 stops46h 07mAir Canada
ons 22/111:20SYD - ORD
2 stops46h 31mAir Canada
Deal found 16/12$2,594
ons 25/1216:20ORD - SYD
1 stop23h 55mUnited Airlines
fre 31/112:10SYD - ORD
1 stop26h 16mUnited Airlines
Deal found 16/12$2,766
tis 24/1207:00ORD - SYD
2 stops30h 50mDelta
lör 11/111:05SYD - ORD
2 stops38h 30mDelta
Deal found 17/12$3,237
ons 18/1217:10ORD - SYD
2 stops28h 00mFiji Airways
lör 28/1214:30SYD - ORD
2 stops21h 48mFiji Airways
Deal found 17/12$4,332
tis 17/1220:00ORD - SYD
1 stop44h 05mAir New Zealand
tis 7/119:15SYD - ORD
2 stops40h 55mAir New Zealand
Deal found 17/12$4,474
mån 23/1220:25ORD - SYD
3 stops52h 15mAir Tahiti Nui
ons 22/119:15SYD - ORD
3 stops41h 16mAir Tahiti Nui
Deal found 16/12$4,573

Find flights from O'Hare Intl to Sydney within your budget

Customise your flight search to find flights from O'Hare Intl 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 18 december 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mån 20/1

15:20-07:25

1 stop23h 05m

Sydney Kingsford Smith

fre 31/1

11:50-16:28

2 stops21h 38m

$1,374

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

fre 17/1

20:25-09:00

1 stop43h 35m

Sydney Kingsford Smith

fre 31/1

11:50-15:26

1 stop20h 36m

$1,380

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

tors 13/3

17:10-07:25

1 stop22h 15m

Sydney Kingsford Smith

ons 26/3

11:15-17:23

1 stop22h 08m

$1,392

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

mån 24/3

07:00-10:30

2 stops35h 30m

Sydney Kingsford Smith

mån 26/5

11:50-05:03

2 stops32h 13m

$1,537

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

lör 1/3

16:55-12:30

2 stops26h 35m

Sydney Kingsford Smith

lör 15/3

14:30-21:07

2 stops22h 37m

$1,898

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

tis 25/3

15:40-08:35

1 stop24h 55m

Sydney Kingsford Smith

ons 16/4

09:20-14:39

1 stop20h 19m

$1,955

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

tis 24/12

20:25-07:25

1 stop42h 00m

$739

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

tors 6/2

16:35-10:50

2 stops25h 15m

$1,046

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

tis 4/3

17:40-12:30

2 stops25h 50m

$1,063

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

tis 1/4

11:35-08:20

2 stops28h 45m

$1,120

Flights are sorted by cheapest return flights first.

Deals found on 17/12

Showing 1-10 of 18 results
1
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Best time to book a flight from O'Hare Intl to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from O'Hare Intl 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 O'Hare Intl to Sydney

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

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Sydney?

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

The best time to book flights from Chicago O'Hare Intl Airport to Sydney is 37 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Sydney?

Currently, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $129). Flying from Chicago O'Hare Intl Airport 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 ORD to SYD?

Find hourly flight availability from O'Hare Intl 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 18 december 2024.

It’s optimal to fly from Chicago O'Hare Intl Airport to Sydney in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to 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 18 december 2024.
Peruse reviews from past customers who have flown with American Airlines, Air Canada and Qantas Airways from Chicago to Sydney to help guide your decision. 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

Boarding

8.5

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

Comfort

8.0

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

Boarding

8.5

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

Comfort

8.0

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

Boarding

8.5

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

Comfort

8.0

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

Boarding

8.5

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

Comfort

8.0

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.

Alaska Airlines
8.0
Very Good
9,554 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Boarding

8.5

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

Comfort

8.0

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

Boarding

8.5

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

Comfort

8.0

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 O'Hare Intl 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 O'Hare Intl?

    For a flight from Chicago O'Hare Intl 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 O'Hare Intl per day. 3 airlines have flights to Sydney Kingsford Smith from Chicago O'Hare Intl on a regular basis.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Sydney round-trip?

    According to our current data, American Airlines ($1,374), Qantas Airways ($1,380), and ANA ($1,537) offers the cheapest pricing from Chicago O'Hare Intl Airport to Sydney. Users have found that American Airlines is 29% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Sydney one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $739. Qantas Airways flights start at $1,046 while deals on Air Canada start at $1,120 one-way.

  • Can I find deals for flights from O'Hare Intl to Sydney that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Sydney?

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

  • Can I find deals for business class flights from O'Hare Intl to Sydney?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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 O'Hare Intl Airport to Sydney?

    Currently, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sydney (average of $129). Flying from Chicago O'Hare Intl Airport 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 O'Hare Intl to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Midway to Sydney flights

Top 3 airlines flying from O'Hare Intl to Sydney

Discover the top 3 airlines that operate flights from O'Hare Intl 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 18 december 2024.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,436Average$1,531FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,521Average$1,859FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,777Average$2,272FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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Cheapflights does show flights with no change fees to all users. To see these options for flights from O'Hare Intl to Sydney, users can toggle the no change fees filter when performing a flight search.

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