South terminal map
From here, most of Aeromexico, Aerolineas Argentinas, Avianca El Salvador, Avianca Peru, and other airlines’ flights to Latin America depart.
Structure termial H J:
The Arrivals section with the baggage claim is located on the first level of the North terminal. It also offers access to taxis and other types of transportation.
Boarding areas, security checkpoints, and registration offices are all situated on the second floor. There are 11 boarding gates in Concourse H and 15 gates in Concourse J.
On the third level you can use the MIA Mover, access the MetroRail station or parking lots, also you can find the rental car office nearby.
The building is pretty new compared to the other parts of the airport since Concourse J was built in 2007 as well as the South Terminal. There you may find 15 gates which are used for international flights, two lounges, and many offices. Also, the Concourse is used by United Airlines and its partners.