At least one suicide bomber attacked her convoy in Karachi as it travelled through a huge crowd of her supporters.
"Ours is a bold leader. If she is not scared we are also not scared," said Imdad Chandio, a PPP supporter, at Sukkur airport.
Further trips
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"Perhaps Bhutto should have listened to Musharraf and delayed her return to Pakistan until the volatile security situation was better"
ndur5, Irving, US
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Since the bombings at a procession to celebrate her return, Bhutto has spent most of her time behind reinforced doors in her Karachi residence.
On Friday she said she would also travel to the cities of Lahore and Islamabad, and also wanted to visit Pakistan-administered parts of Kashmir and tribal areas along the Afghan border, where the army has clashed with pro-Taliban fighters.
Her prime minister father was removed in military coup usurped and later hanged in 1979.
The site is also the resting place of Bhutto's two brothers - Shahnawaz, who was poisoned in southern France in 1987, and Murtaza, shot dead in Karachi in 1996.
Bhutto has accused elements in the government and security services of trying to kill her, as well as pro-Taliban and al-Qaeda fighters.
She has demanded that international experts join the investigation into the attempt on her life - a call the government rejected.
The bombing has raised concerns that fear of more attacks would restrict the campaign for January parliamentary elections.