Originally Posted by
Ocn Vw 1K
SFO is my "home" airport, also, and I take many early departures. This used to be a problem in earlier years, before UA reconfigured its Express gates and made more use of Int'l gates; but I have not had this "tow" delay for about 3-4 years at SFO.
If you have this problem at SFO, it's normally because the plane was undergoing maintenance overnight, and that maintenance ran late.
Or at least, that's what it's been every time I've had it happen.