Ontario to Sydney
ONTSYD
Fly from Ontario to Sydney starting at USD 589 with Alaska Airlines.
Best fare available on Oct 15, 2026.
Limited seats. Better plans. Book before it's gone.
Ontario to Sydney cheapest flights this week
Ontario to Sydney monthly flight fare trend
Oct
from USD 589
Nov
No flights
Dec
No flights
Jan
from USD 760
Feb
No flights
Mar
No flights
Airport Details
Origin
Ontario
Ontario International Airport (ONT)
Ontario, ONT
Zone
Los Angeles
Elev
944 ft
Destination
Sydney
Sydney Kingsford Smith International Airport (SYD)
Sydney (Mascot), SYD
Zone
Sydney
Elev
21 ft
