Spirit Airlines is based out of Newark Liberty International Airport's Terminal B (EWR). Spirit Airlines EWR Terminal offers a straightforward flying experience, letting customers pay for just what they need because of its affordable pricing. Though it serves both international and domestic aircraft, facility B at EWR is an international facility. Although there are many dining and shopping alternatives available, the amenities could be more limited than at other terminals. In order to get through security and boarding quickly, passengers on Spirit flights should arrive early.