What is the airport code for San Juan, Puerto Rico?

The airport code for San Juan, Puerto Rico is SJU. This three-letter code is part of the International Civil Aviation Organization (ICAO) and the International Air Transport Association (IATA) coding systems, which help standardize airport designations worldwide. SJU specifically refers to Luis Muñoz Marín International Airport, the primary airport serving San Juan and the busiest in Puerto Rico. Understanding these codes is essential for travel, ticketing, and navigating airports. The other choices represent airports in different locations: SFO is for San Francisco International Airport, SEA is Seattle-Tacoma International Airport, and DCA is Ronald Reagan Washington National Airport in Washington, D.C. Therefore, SJU distinctly identifies the airport in San Juan.