Find great value on flights from Ottawa to San Juan with CheapOair! Fly to amazing San Juan and visit El Castillo de San Cristobal which is a national historic site built by Spaniards to protect the city from land attacks. Adventure enthusiasts should head to La Marquesa Forest Reserve and enjoy an exhilarating canopy tour. Appreciate historic architecture of Palacio de Santa Catalina which is the residence of Puerto Rico’s Governor and also a World Heritage Site. Don’t miss the authentic cuisine of San Juan in Calle O’Donnell. Whatever type of vacation you are looking for, CheapOair will help you save big on flights to San Juan.