Originally Posted by 1KDAN
1. SFO frequently experiences weather delays, much more so than LAX.
2. Going from Domestic to International is much more strenuous at SFO than at LAX. (And it's exascerbated by terrible signage and understaffed, often unhelpful employees.)
(My apologies to any SFO-based UA folks. I'm just talking about my own experiences here.)
this is also the worst weather time of year for SFO, especially in the mornings and evenings.
also, getting between the terminals is pretty easy with the air train, but you do have to go through security again, and im sure the hour connection mentioned by the OP isnt enough to allow for that.