While Chiranjeevi sat in a bus along with others, the home minister and Naidu left in their convoys.
As hundreds of vehicles were stranded on the road leading to YSR's family estate, the vehicles of the leaders could not proceed further.
By the time film actor and former MP Mohan Babu and his son Vishnu reached Idupulapaya, the last rites were completed.
YSR, who first became chief minister in May 2004, was flying from Hyderabad to Chittoor district when his helicopter crashed in a dense forest and exploded in Kurnool district. His charred body was found Thursday, over 24 hours after the helicopter went missing.