What terminal is United Airlines at BOS? refers to finding out the specific terminal location for United Airlines at Boston Logan International Airport (BOS). United Airlines operates out of Terminal A at BOS, where passengers check in, go through security, and board their flights. If you’re traveling with United Airlines at Boston Logan, the What terminal is United Airlines at BOS inquiry will guide you to Terminal A, which is equipped with various amenities such as dining options, shops, and lounges to enhance the travel experience.