Carmen Beltran Perez, 68, last was seen traveling on American Airlines Flight 1416 from San Juan on Wednesday evening. She was coming to the U.S. mainland for treatment and planned to live with her sister, said her niece, Geraldine Langella.
Perez was found in good health shortly after midnight Friday near a bridge in Brooklyn, said Detective Steven Bishop of the Port Authority of New York and New Jersey police. She was taken to the hospital for a medical evaluation and was expected to be reunited with her family there.
Police were able to find Perez using cell phone tracking technology, Bishop said.
"The outcome was fantastic," he said.