United Airlines operates at Terminal B of Boston Logan International Airport (BOS) . Terminal B is the largest terminal at the airport and offers various amenities and facilities for passengers. The check-in area in Terminal B is divided into two sections: one for domestic flights and one for international flights. The domestic check-in area is located on the south side of the terminal, and the international United check-in area is located on the north side of the terminal. The gate area in Terminal B is also divided into two sections: one for domestic flights and one for international flights. The domestic gate area is located on the east side of the terminal, and the international gate area is located on the west side of the terminal.