Hi there! I just flew Logan Airport Spirit Terminal and in all honesty, I was pleasantly surprised. The terminal was much cleaner than I anticipated, and although it's a low-cost airline, the atmosphere was fairly tidy overall. Security lines moved rapidly (something you don't often see!), and there were some decent food places around to grab a fast bite. It's not the prettiest terminal, but considering it's a Spirit flight, I'd say it was better than expected. Crews were courteous, and you could tell by the signage where you were going. Just make sure to do your online check-in and get your gate assignment in advance. Limited seating at the gate, so get there a little ahead of time and secure a seat. Overall, I had an easy time and would certainly fly Spirit out of Logan again if I'm looking to save money. Budget doesn't necessarily equal bad — and this was a good case in point.