If you're traveling with Spirit Airlines and wondering what terminal is Spirit Airlines at Logan, it's important to know that Spirit Airlines operates out of Terminal B at Boston Logan International Airport. This terminal is specifically designated for several domestic carriers, including Spirit, and is equipped with a variety of passenger amenities such as check-in counters, TSA security checkpoints, food and beverage options, and comfortable waiting areas. Understanding what terminal Spirit Airlines is at Logan can save you valuable time on the day of your flight, helping you navigate directly to the correct location without unnecessary confusion or delays.