United Airlines primarily operates from Terminal B at Boston Logan International Airport (BOS). Terminal B is the central hub for United's domestic and international flights at Logan Airport. Within Terminal B, passengers can find United's check-in counters, security checkpoints, baggage claim areas, and departure gates. This terminal caters to both domestic and international flights operated by United Airlines, offering convenience and efficient services for travelers. To ensure accuracy, please verify your flight's specific terminal and gate information on your boarding pass or by checking with United Airlines closer to your travel date, as terminal assignments can occasionally change.