"That will not be happening on Iowa State Fairgrounds," state fair spokeswoman Mindy Williamson told the Des Moines Register. She added that Trump has yet to even ask for permission to land his helicopter on the fairgrounds.
Even so, when asked about the idea, Trump's campaign told CBS News that they're "working on it."
"We don't know the when and the where yet," the campaign added.
CBS News' Kylie Atwood contributed to this report.