Spirit Airlines operates from Terminal A at LaGuardia Airport (LGA), also known as the Marine Air Terminal. If you're wondering What terminal is Spirit Airlines LGA, it’s located in this smaller, historic part of the airport. This terminal primarily handles domestic flights, providing a simple and efficient travel experience. Although Terminal A offers fewer amenities compared to larger terminals, it has quicker access to gates and shorter security lines. Passengers can expect a hassle-free check-in process with self-service kiosks and essential services when flying with Spirit Airlines at LGA.