Earn point on your loyalty program!arrow arc left

Cheap flights from Chicago (CHI) to Sydney (SYD)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)

How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Chicago to Sydney in June , July 2026

29 Jun - 21 Jul $ 1,461.00
CHI
Chicago
Frontier Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Frontier Airlines
2 STOPS
CHI
Chicago
Pick dates
19 Jun - 10 Jul $ 1,864.00
CHI
Chicago
Alaska Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
CHI
Chicago
Pick dates
19 Jun - 10 Jul $ 3,268.00
CHI
Chicago
Alaska Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
CHI
Chicago
Pick dates

Last minute flights from Chicago to Sydney

23 Jun - 30 Jun $ 1,551.00
CHI
Chicago
Alaska Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
CHI
Chicago
Pick dates
10 Jun - 30 Jun $ 1,908.00
CHI
Chicago
United Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
1 STOPS
CHI
Chicago
Pick dates
10 Jun - 30 Jun $ 1,948.00
CHI
Chicago
Air New Zealand
2 STOPS
SYD
Sydney
SYD
Sydney
Air New Zealand
1 STOPS
CHI
Chicago
Pick dates

One-way flights to Sydney from Chicago

7:20 AM - 11:30 PM
Qantas
2 Stops
33h 10m
CHI - SYD
$ 761
Kiwi
Pick dates
5:42 PM - 11:55 AM
Alaska Airlines
2 Stops
34h 8m
CHI - SYD
$ 838
Kiwi
Pick dates
6:59 PM - 11:05 PM
Qantas
1 Stops
21h 6m
CHI - SYD
$ 1,103
Kiwi
Pick dates

How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.