Join Date: Jan 2006
Location: DEN
Programs: UA 1KMM, DL Plt, AA, AS, HHonors Diamond, IHG Plat, Marriott Ttnm (LT PLT), Hertz PC, Enterprise Plt
Posts: 7,238
When I flew on DL out of SFO (three years of DL Diamond with SFO as home airport), all domestic operations were out of T1 (and only out of the east wing of T1). It's possible that this has changed since then, but...
Were you coming in from an international destination on DL?
Was your connection onto an AS operated flight?