TEGUCIGALPA, Honduras — Honduras braced for confrontation Sunday as ousted President Manuel Zelaya insisted on coming home to reclaim his post, urging his supporters to mass at the airport for a showdown with the interim government in power since the army sent him into exile a week ago.

The interim government said it ordered the military to prevent the landing of a plane carrying Zelaya or any unidentified plane.

"The government of President (Roberto) Micheletti has order the armed forces and the police not to allow the entrance of any plane bringing the former leader," the foreign minister of the interim government, Enrique Ortez, told The Associated Press on Sunday.

At the main Tegucigalpa airport, soldiers outnumbered travelers and commercial flights were canceled after a final morning departure. Access roads were cut off by police checkpoints, with soldiers standing guard alongside.

The poor Central American country's Roman Catholic archbishop and its human right commissioner urged Zelaya to stay away, warning that his return could spark bloodshed. The interim government said it would arrest Zelaya and put him on trial despite near-universal international condemnation of the coup that removed him as he campaigned to revise the constitution.

In Washington, the Organization of American States suspended Honduras as a member late Saturday. Micheletti preemptively pulled out of the OAS hours earlier rather than comply with an ultimatum that Zelaya be restored.

On Saturday, Zelaya posted an audio message on the Internet urging loyalists to greet his arrival in a peaceful show of force.

"We are going to show up at the Honduras International Airport in Tegucigalpa ... and on Sunday we will be in Tegucigalpa," Zelaya said in the taped statement carried on the Web sites of the Telesur and Cubadebate media outlets. "Practice what I have always preached, which is nonviolence."

Zelaya supporters gathered Sunday morning at a university on the south side of the capital and planned to march to the airport.

"We have no pistols or arms, just our principles," said Rafael Alegria, a prominent pro-Zelaya protest organizer. "We have the legitimate right to fight for the defense of democracy and to restore President Zelaya."

In comments to a local radio station, Zelaya said he would be accompanied by Argentine President Cristina Fernandez, Ecuadorean President Rafael Correa, several foreign ministers and 300 journalists.