Luis Muñoz Marín International Airport in San Juan is the busiest airport in the Caribbean and the region's main connecting point for onward flights to the smaller islands. The current schedule feed lists 67 airports in 16 countries connected to San Juan.
Because Puerto Rico is a US territory, travelers from the mainland fly there as a domestic trip — no passport, no customs, no immigration line.
The most frequently served routes for Luis Munoz Marin International Airport connect to New York (JFK), Orlando (MCO) and Gustavia (SBH).
The longest connected route for Luis Munoz Marin International Airport reaches Madrid (MAD). This non-stop flight covers a distance of 3,964 miles (6,379 km).