United Airlines San Francisco Airport Terminal refers to the specific terminal at San Francisco International Airport (SFO) where United Airlines operates its flights. United Airlines primarily operates out of Terminal 3 at SFO, which is a major hub for the airline. The United Airlines San Francisco Airport Terminal includes various services such as check-in counters, security screening, lounges, and a range of dining and retail options. This terminal offers a convenient and comfortable experience for United Airlines passengers traveling domestically and internationally.