I've not monitored every Oz-bound or originating flight but AI from a limited sample has had quite reasonable punctuality lately.
However on Monday 3 August 2026, AI308, the 0300 hours DEL-MEL did not become airborne until 0617. B773ER VT-ALK should arrive at gate tonight at 2225 hours, 165 minutes late. This is the first time I've recorded an AI B773ER delay. Yesterday this flight was 64 late arriving in Melbourne.
In theory this should not delay the 0130 hours redeye, AI309, back to DEL given the multi-hour allowance for a turnaround, again showing the value of international flights not being given quick turnarounds where feasible.