Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Chicago to Sydney
The cheapest flights right now
Chicago – Sydney
Outbound – Nov 8, 2026
1 stop
25h 5m YVR
Return – Nov 22, 2026
1 stop
25h 38m YYZ
$1,304
yesterday
Chicago – Sydney
Outbound – Nov 8, 2026
1 stop
25h 5m YVR
Return – Nov 22, 2026
1 stop
20h 17m YVR
$1,296
yesterday
Chicago – Sydney
Outbound – Nov 8, 2026
2 stops
29h 30m YYZ
YVR
Return – Nov 22, 2026
1 stop
20h 17m YVR
$1,404
yesterday
Chicago – Sydney
Outbound – Nov 8, 2026
1 stop
25h 5m YVR
Return – Nov 22, 2026
2 stops
23h 23m YVR
YYZ
$1,384
yesterday
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$1158
Average price of a round trip
$1328
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
28h53
A flight from Chicago to Sydney takes on average 28h53.
Best time
September
According to user searches, the ideal month to go to Sydney is September.
Tips for finding a cheap flight from Chicago to Sydney
Check out our tips for booking your flight to Sydney (Australia) from Chicago (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is September, with an average flight ticket price of $1345 (calculation over the last two years). The most touristic season corresponds to the months of November, March and September.
For the cheapest flights, it is advisable to buy your ticket at least 16 days before the departure date.
The airline offering the cheapest flight tickets is Frontier Airlines. A ticket from the airline Frontier Airlines to Sydney costs on average $1146.
The airlines that offer the most flights are .
Price of flight tickets from Chicago to Sydney
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $1158 to $1355
- The average price of a flight ticket is about $1328
- Prices are lowest for stays in the month of September
- The month in which booking a ticket is cheaper is: August
info departure city :
Chicago, USA
airports :
Chicago-Merrill C. Meigs Field Airport (CGX)
Chicago FSS (CHI)
Chicago-Midway International Airport (MDW)
Chicago-O'Hare International Airport (ORD)
local time :
Chicago is a city in the country USA, the time zone is [[timezone]]. In Chicago, it is currently {fromLocalTime}, the temperature is on average 16°C, with a minimum of 15°C and a maximum of 18°C.
The city of Chicago (CHI) has 4 airport(s): Chicago-Merrill C. Meigs Field, Chicago FSS, Chicago-Midway and Chicago-O'Hare
destination info :
Sydney, Australia
airports :
Sidney-Kingsford Smith Airport (SYD)
Rose Bay Water Airport (RSE)
Bankstown Airport (BWU)
local time :
Sydney is in the country Australia, the time zone is [[timezone]]. In Sydney, it is currently {toLocalTime}, the temperature is on average 17°C, with a minimum of 17°C and a maximum of 18°C.
The city of Sydney (SYD) has 3 airport(s): Sidney-Kingsford Smith, Rose Bay Water and Bankstown
Useful info about Sydney
What is the least touristic period to go to Sydney?
If you want to visit Sydney during the least touristic period, choose the month of September.
What is the most popular time to travel to Sydney?
In Sydney, the most popular month is November. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Chicago to Sydney?
According to our data, it is recommended to book your flight 16 days before your departure. If you book your flight ticket 3 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from Chicago to Sydney is Monday.
What are the arrival and destination airports when traveling between Chicago and Sydney?
When you leave, you can leave from Chicago-O'Hare, and you will arrive at Sidney-Kingsford Smith.
How to reach Chicago airport from the city centre?
The airport Chicago-Merrill C. Meigs Field is located 4 km, Chicago FSS is located 29 km, Chicago-Midway is located 12 km or Chicago-O'Hare is located 29 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from Chicago to Sydney?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Chicago and Sydney?
In summer, the average temperature is 14°C in Sydney and 22°C in Chicago. The average rainfall in summer is 61 mm in Sydney and 145 mm in Chicago. In summer, it is warmer in Chicago and it rains less in Sydney. In winter, it is colder in Sydney and it rains more in Sydney.
