Aeropuerto Internacional Luis Muñoz Marín (SJU) is 20 minutes east of Old San Juan in the neighborhood of Isla Verde. San Juan's other airport is the small Fernando L. Rivas Dominici Airport (SIG) in Isla Grande, near the city's Miramar section. From either airport you can catch flights to Culebra, Vieques, and other destinations on Puerto Rico and throughout the Caribbean. (Note that although the Dominicci airport was still operating at this writing, its ultimate future was uncertain.)
Other Puerto Rican airports include Aeropuerto Internacional Rafael Hernández (BQN) in the northwestern town of Aguadilla, Aeropuerto Eugenio María de Hostos (MAZ) in the west coast community of Mayagüez, Mercedita (PSE) in the south coast town of Ponce, Aeropuerto Diego Jiménez Torres (FAJ) in the east coast city of Fajardo, Antonio Rivera Rodríguez (VQS) on Vieques, and Aeropuerto Benjamin Rivera Noriega (CPX) on Culebra.
Aeropuerto Antonio Rivera Rodríguez (Vieques. 787/741-8358). Aeropuerto Benjamin Rivera Noriega (Culebra. 787/742-0022). Aeropuerto Diego Jiménez Torres (Fajardo. 787/860-3110). Aeropuerto Eugenio María de Hostos (Mayagüez. 787/833-0148). Aeropuerto Fernando L. Rivas Dominici (Isla Grande, San Juan. 787/729-8711). Aeropuerto Mercedita (Ponce. 787/842-6292). Aeropuerto Rafael Hernández (Aguadilla. 787/891-2286). Aeropuerto Internacional Luis Muñoz Marín (Isla Verde, San Juan. 787/791-3840).
Before arriving, check with your hotel about transfers: some hotels and resorts provide transport from the airport -- free or for a fee -- to their guests; some larger resorts run regular shuttles. Otherwise, your best bets are taxis turísticos (tourist taxis). Uniformed officials at the airport can help you make arrangements. They will give you a slip with your exact fare to hand to the driver. Rates are based on your destination. A taxi turíistico to Isla Verde costs $10. It's $14 to Condado and $19 to Old San Juan. There's a 50¢ charge for each bag handled by the driver.