Flying with Spirit Airlines? I was surprised by how much better the air canada terminal philadelphia airport is. Everything can be found easily, and it's clean and not overly crowded. TSA didn't take long at all, and the check-in kiosks operated quickly. While I waited to board, I had a coffee nearby. Although Spirit isn't renowned for its opulence, the BOS terminal is at least efficient and seamless. This terminal does a good job if you're seeking for a cheap flight from Boston.