Luis Muñoz Marín International Airport (SJU)
The airport is located in Carolina, 3 miles (5 km) southeast of San Juan. It is the island’s main international gateway, and its main connection to the mainland United States. The airport serves as the Caribbean hub for American Airlines and American Eagle.
Rates will probably be a little higher than in the United States. Car rental agencies are located around the island in the larger cities. Agencies include:
L & M
Fernando Ribas Dominicci Airport (SIG)
Also commonly known as Isla Grande Airport, is a small airport in San Juan, about 5 minutes by air and 15 minutes by car from Luis Muñoz Marín International Airport. It is adjacent to the new Puerto Rico Convention Center, the San Juan bay, and the Pan American Cruise Ship Terminal, and overlooks Cataño. While Isla Grande’s main operation is with general aviation, it is still a commercial airport, dealing with some domestic commercial flights.