Luis Muñoz Marín International Airport (SJU) is the main airport of San Juan and of Puerto Rico. It sits in the municipality of Carolina, next to the Isla Verde beach area east of the city.
There are two terminals: Terminal A on the south side, used mainly by JetBlue and Tradewind Aviation, and the larger Terminal B in the center, whose concourses B, C and D handle most other airlines. Baggage claim and the ground transportation area are on the arrivals level (Level 1) of both.
Puerto Rico is a US territory, so on a flight from the US mainland there is no immigration or customs: you walk straight to baggage claim. International arrivals clear US Customs and Border Protection, collect their bags and pass customs and agriculture checks, which takes about 15 to 45 minutes. Puerto Rico runs on Atlantic Standard Time (UTC-4) all year.
Entry requirements and local notes
ID or passport. US citizens flying from the US mainland need only a valid ID, since these are domestic flights. Travelers on international flights follow the usual US entry rules, including a visa or an approved ESTA for eligible nationalities.
Agriculture inspection on the way home. When you fly back to the US mainland, checked bags go through a US Department of Agriculture inspection before airline check-in, so allow for it when you set your return pickup time.
Check your terminal. JetBlue and Tradewind Aviation use Terminal A and most other airlines use Terminal B; give the right one for your return ride, as assignments can change.
No clock change. Atlantic Standard Time matches US Eastern time in summer and is one hour ahead of it in winter. The currency is the US dollar.