Travelers have found it’s best to book a flight 15 days in advance to save up to 134% 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 15 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 Illinois to Sydney 1-2 weeks in advance for as low as $1,287, or $1,886 for flights within the next 24 hours.
Flights from Illinois to Sydney lean towards being more expensive in December. Prices are generally better when you fly from Illinois to Sydney in October, with the cheapest ticket starting at $859.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Sydney as you normally would.
Fly from
Fly to
Budget
$1,053 - $1,602
Route
Depart
Return
Price
Chicago O'Hare IntlSydney Kingsford Smith
ORD - SYD
ORDSYD
Chicago O'Hare Intl
dc. 5/8
2 stops25h 18m
Sydney Kingsford Smith
dt. 5/14
2 stops31h 45m
Chicago O'Hare IntlSydney Kingsford Smith
ORD - SYD
ORDSYD
Chicago O'Hare Intl
dc. 8/28
2 stops34h 35m
Sydney Kingsford Smith
dg. 9/29
2 stops40h 23m
Chicago O'Hare IntlSydney Kingsford Smith
ORD - SYD
ORDSYD
Chicago O'Hare Intl
dj. 8/29
1 stop27h 45m
Sydney Kingsford Smith
dv. 9/13
1 stop31h 35m
Chicago O'Hare IntlSydney Kingsford Smith
ORD - SYD
ORDSYD
Chicago O'Hare Intl
dg. 9/8
1 stop28h 10m
Sydney Kingsford Smith
dc. 9/18
1 stop36h 40m
Chicago O'Hare IntlSydney Kingsford Smith
ORD - SYD
ORDSYD
Chicago O'Hare Intl
dt. 9/3
1 stop24h 40m
Sydney Kingsford Smith
dt. 9/10
1 stop26h 45m
Chicago O'Hare IntlSydney Kingsford Smith
ORD - SYD
ORDSYD
Chicago O'Hare Intl
dc. 5/29
2 stops29h 25m
Sydney Kingsford Smith
dc. 7/24
1 stop20h 01m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
dc. 5/22
1 stop22h 03m
Sydney Kingsford Smith
dv. 5/31
1 stop29h 02m
Chicago O'Hare IntlSydney Kingsford Smith
ORD - SYD
ORDSYD
Chicago O'Hare Intl
dl. 9/2
1 stop21h 45m
Sydney Kingsford Smith
dl. 9/9
1 stop20h 14m
Chicago O'Hare IntlSydney Kingsford Smith
ORD - SYD
ORDSYD
Chicago O'Hare Intl
dl. 9/2
2 stops23h 45m
Sydney Kingsford Smith
dl. 9/9
2 stops24h 15m
No data available for this route at this time. Please check back soon.
Entertainment
Comfort
Crew
Food
Overall
Boarding
Reviews
if you can put more multiples language agents in air service especially Chinese or French ,the customer who speaks those languages will be much happier than now
Entertainment
Comfort
Crew
Food
Overall
Boarding
Reviews
if you can put more multiples language agents in air service especially Chinese or French ,the customer who speaks those languages will be much happier than now
Entertainment
Comfort
Crew
Food
Overall
Boarding
Reviews
if you can put more multiples language agents in air service especially Chinese or French ,the customer who speaks those languages will be much happier than now
Entertainment
Comfort
Crew
Food
Overall
Boarding
Reviews
if you can put more multiples language agents in air service especially Chinese or French ,the customer who speaks those languages will be much happier than now
Entertainment
Comfort
Crew
Food
Overall
Boarding
Reviews
if you can put more multiples language agents in air service especially Chinese or French ,the customer who speaks those languages will be much happier than now
Entertainment
Comfort
Crew
Food
Overall
Boarding
Reviews
if you can put more multiples language agents in air service especially Chinese or French ,the customer who speaks those languages will be much happier than now
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