It's not a clear-cut decision, because I know that living in base makes the job completely different than commuting. Also, commuting into and out of SFO can sometimes be a mess when the weather rolls in, and I suspect that SEA can be the same. Obviously the best of both worlds for you would be DAL, but you hit all the high points for jumping over to UAL. I'm not as optimistic that you'd be home more often at UAL because of the commute, but without a doubt they have much more scheduling flexibility there. A close friend was hired in early 2016 and was 737 SFO for a while. Over the past holidays, he was able to drop/trade/whatever on his schedule to have all of the holidays off and drop well below monthly min guarantee. I'm from the VX side but I can imagine that that sort of stuff is not gonna happen here at AS any time soon.