Sunanda Pushkar's 21-year-old son Shiv Menon lit the pyre. Pushkar's husband Union minister Shashi Tharoor, her father and brother were among the family members present at the Lodhi Road crematorium.
Earlier, her body was taken from AIIMS to Shashi Tharoor's residence at Lodhi Estate where a number of prominent political leaders including Defence Minister A K Antony, Overseas Indian Affairs Minister Vayalar Ravi and former Delhi Chief Minister Sheila Dikshit paid tributes to her.
Menon, who performed the last rites, is Sunanda Pushkar's son from previous marriage.
A three-member panel of doctors headed by Dr Sudhir K Gupta had conducted an autopsy on Sunanda Pushkar's body in AIIMS.
52-year-old Sunanda Pushkar was found dead in her suite at the Leela Palace hotel last evening and the body was shifted to AIIMS at around 3:30 AM for post-mortem.
Sunanda Pushkar and Shashi Tharoor were at the centre of a raging controversy when reports emerged that she was upset over reported text and tweet messages between her husband and Mehr Tarar, a Pakistani journalist.