A homeless man was found unconscious at a terminal in LaGuardia Airport on Saturday and later died of cardiac arrest at the hospital, according to authorities and law-enforcement sources.

Cops responded to a report of a man who needed medical attention at the airport’s Terminal C around 4 p.m., the Port Authority Police Department said in a statement to The Post.

The unidentified man was homeless and frequented the airport, sources said.

He was found unconscious and transported to a local hospital after the FDNY responded to the scene.

He was eventually pronounced dead at the hospital after suffering from cardiac arrest, sources said.