it is true to book in 2 to 3 weeks in advance and should be fine. Could u plz let me know which airlines u r seeing to Sydney from India..? I don't see much options as of now. thank you.I am planning to go in first or second week of July to Sydney from India. There are many flight options available online but I am not sure to book in advance in current scenario or not.
In my understanding, It is advisable to book 15-20 days in advance only.
Please share your experience and thoughts.