He put the blame squarely on the United States for the incident.
"Message to the Americans: The empire and its servants will never be able to intimidate or scare us," Morales told supporters at El Alto International Airport outside La Paz, where he arrived late Wednesday. "European countries need to liberate themselves from the imperialism of the Americans."
Morales said officials should analyze whether to shut the U.S. Embassy in his country.
"Without the United States," he said, "we are better politically and democratically."
Ecuadorian President Rafael Correa joined Morales in criticizing the United States' role in the situation. Venezuela's Nicolas Maduro blamed the CIA for pressuring the European governments to refuse to grant the plane passage.