On Friday, Mr Chavez said Mr Zelaya was returning to Honduras "in the next few hours".
"Zelaya will enter Honduras. Let's see what the gorillas will do," he said, referring to the coup leaders.
Mr Chavez was speaking in La Paz, following talks with Bolivian President Evo Morales, Ecuador's Rafael Correa and Paraguay's Fernando Lugo.
But journalists in Nicaragua, where Mr Zelaya has been staying, said he was still in the capital, Managua, and there was no indication that he was leaving.
The US has called on Honduras' regional neighbours to support the Costa Rica talks.
"No country in the region should encourage any action that would potentially increase the risk of violence either in Honduras or in surrounding countries," said State Department spokesman P J Crowley.