what terminal is spirit in las vegas is among the best-known low-cost airlines in the US. It offers flights to a variety of cities around the country, including one of the most well-known tourist destinations in the world: Las Vegas.Using Las Vegas' Harry Reid International Airport is Spirit Airlines. It serves as a hub for international airlines and is the primary international airport in the area. Prior to then, it was called Mccarran International Airport. You must distinguish between the two so that you may get to the port safely.