Travel to and from Puerto Rico is straightforward, particularly for U.S. citizens. U.S. citizens do not need a passport or visa to travel between the mainland U.S. and Puerto Rico. For citizens of other nations, the requirements are the same as to enter any other U.S. territory or state.
Luis Muñoz Marín International Airport, just east of the heart of San Juan, is the busiest airiport in the Caribbean. The second busiest commercial airport in Puerto Rico is the Rafael Hernández International Airport in Aguadilla, on Puerto Rico's northwest coast.
San Juan is a major hub for cargo vessels and cruise ships. Cruises regularly call at the port of San Juan and Ponce, the second largest port in Puerto Rico. Ponce's port is capable of handling large cargo ships as well as cruise ships. the Port of Mayagüez primarily handles cargo, but is also home to passenger ferry service between Puerto Rico and the Dominican Republic.
Most of Puerto Rico is served by well-maintained roads. These include a system of highways, expressways, and toll autopistas that connect most major coastal cities around the island, as well as interior areas between San Juan and Ponce.
Bus service is provided by the Metropolitan Bus Authority. San Juan is also served by Tren Urbano, a rapid-transit system.
