From Spirit Airlines ATL Terminal travelers flying  with have a simple and effective trip. ATL's Terminal S features all you need for a comfortable journey, even if Spirit's low-cost business model means it delivers fewer amenities than full-service airlines. Spirit Airlines passengers can shop for last-minute necessities, grab a quick snack, or connect to another aircraft at Terminal S, which is fully furnished to service them. Those who plan beforehand can navigate one of the world's busiest airports without experiencing any stress.