Spirit Airlines Terminal FLLAn important hub for both domestic and international travel, particularly to and from Latin America and the Caribbean, is Fort Lauderdale-Hollywood International Airport (FLL). One of the main hubs for Spirit Airlines, one of the biggest ultra-low-cost carriers in the United States, is Terminal 4 at FLL. Whether you’re a seasoned Spirit Airlines passenger or a first-timer, being familiar with Terminal 4’s layout and amenities will help your trip go more smoothly and pleasurably.