 Eastern bought Caribair's entire fleet and by 1980, Eastern had established a hub at Luis Muñoz Marín International Airport (SJU) in San Juan.Other local airlines such as Prinair, Air Puerto Rico and Fina Air attempted to follow in Caribair's footsteps as Puerto Rico's main international airline; however, none were successful as Caribair although Puerto Rican-based Executive Airlines was acquired by American Airlines as an American Eagle regional carrier.In the recent past, American Airlines was the dominant player in San Juan with a connecting hub system being operated by the air carrier at Luis Muñoz Marín International Airport (SJU) to include mainline jet flights to destinations on the U.S. mainland as well as ATR-72 turboprop service operated to various Caribbean islands by their regional airline affiliate American Eagle.