As a commonwealth of the United States, American citizens require only valid proof of identity to enter Puerto Rico, and when arriving from the mainland, there is no immigration control. U.S. citizens should take note, however, that to enter or re-enter the mainland United States from any non-territory point in the Caribbean, you must present a valid passport. If your trip includes multiple stops, or if you plan to visit some of the nearby islands, bringing your passport is a must. For citizens of other countries, the requirements for traveling to Puerto Rico are the same as they are for travel to any destination in the United States. Although customs and documentation requirements are subject to change from time to time, the departure tax for leaving Puerto Rico, if any exists at the time of your visit, will be included in the price of your airfare at time of ticket purchase, so you won’t have to worry about money matters on your return trip from Puerto Rico.
You can obtain more information from the Puerto Rico State Department at 787-722-2121, or the U.S. Virgin Islands’ tourism department at 800-372-8784 or Bureau of Customs at 340-774-2510.