Southwest Airlines operates out of Terminal 1 at SFO, also known as the Harvey Milk Terminal. This modern and sustainable terminal is known for its impressive design, efficient layout, and wide range of amenities. The SFO Southwest terminal is well-organized, making check-in, security, and boarding a streamlined experience for all travelers. https://airportsterminalhub.com/airlines/southwest-airlines/southwest-airlines-san-francisco-international-airport-sfo-terminal/