Spirit Airlines operates out of Terminal A at LaGuardia Airport in New York City. This terminal is also known as the Marine Air Terminal and is located on the eastern side of the airport. Spirit Airlines passengers can expect to find a variety of services and amenities at Terminal A, including ticketing counters, baggage claim, restaurants, and shops. It is important to check the airport's website or with the airline directly for any updates or changes to terminal locations before your flight.For more information about What Terminal is Spirit Airlines at LaGuardia Airport? visit us. What Terminal is Spirit Airlines at LaGuardia Airport?