Flying through San Francisco and wondering which Priority Pass lounge is the best? There are four lounges in SFO that Priority Pass members can access located in International Terminal A and Terminal 1. All the terminals are connected without having to go through security again, so we were able to visit all four lounges to create this head-to-head comparison for you. Even though one lounge refused us access based on time of day, there was still a clear winner out of the group. Keep reading for our experience in each lounge, pros and cons lists, which lounge is best with babies/toddlers, and lots of photos guide your own decision on where to spend your precious time!