American Eagle, Flamenco Airways, Caribair and Vieques Air-Link all provide domestic air travel within Puerto Rico.
Traffic drives on the right.
A service called a linea will pick up and drop off passengers where they wish. Lineas operate between San Juan and most towns, at a fixed rate. Special black and white Tourist Taxis exist. These are part of the Tourist Taxi Program, and charge set rates for travel between the airport and major tourist sites. Buses usually tend not to run after 2100.