If you're flying with Southwest Airlines and wondering what terminal is Southwest Airlines at SFO, the answer is Terminal 1 at San Francisco International Airport (SFO). Specifically, Southwest operates out of Boarding Area B within Terminal 1, which is a modern and well-equipped section of the airport offering a range of traveler-friendly services. Classified under domestic flights, Southwest Airlines mainly serves various U.S. destinations from this terminal. Terminal 1 at SFO is known for its streamlined design, efficient check-in counters, and convenient security lanes. For travelers searching “what terminal is Southwest Airlines at SFO,” knowing that you’ll be flying in or out of Terminal 1 helps reduce confusion and saves valuable time at the airport.This terminal is equipped with dining options, restrooms, seating areas, charging stations, and accessibility services to enhance your experience. If you're arriving on a Southwest flight, baggage claim and ground transportation are easily accessible from Terminal 1’s lower levels.