Discover Spirit Airlines EWR Terminal Newark Liberty International Airport's Terminal A is where Spirit Airlines is based. Travelers may enjoy a comfortable experience at this terminal because of its many amenities, which include restaurnts and retail stores. Spirit is a well-liked option for travelers on a tight budget because of its repautation for offering inexpensive tickets. Check-in and boarding are simple at the terminal, and customers can get assistance from helpful staff. All things considered, Spirit Airlines' domestic and international flights use Terminal A as a handy hub.