San Juan Luis Muñoz Marín International Airport (IATA: SJU, ICAO: TJSJ) is a public airport located in Carolina, 3 miles (5 km) southeast of San Juan, Puerto Rico.

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.

Concourse A is currently under construction and it is slated to open in early 2010. The concourse will be used by US Airways and Delta Air Lines. Other improvements are reconstruction of runway 10-28, press conference rooms, an American Airlines Admirals Club located in Concourse C, and new fast food franchises along it's corridors, like Wendy’s, McDonalds, Subway and Taco Maker, just to mention a few.

Also, the airport has a Hotel, a barber shop, beauty salons, souvenir kiosks, duty free shops, a Banco Popular de Puerto Rico branch and many ATMs all over the facility.