Spirit Airlines is based at Newark Liberty International Airport (EWR), Terminal B. Check-in desks, security checkpoints, and a variety of dining and shopping options are among the amenities provided by the Spirit Airlines EWR Terminal .Spirit Airlines passengers find Terminal B convenient because it is renowned for managing both domestic and international flights. While waiting for their flights in the terminal, passengers may also take advantage of facilities like comfy lounging areas, charging stations, and free Wi-Fi.