Originally Posted by
PsiFighter37
ETA: Doing a quick search shows that the RJ's are E-175, which (from what I've read here) is a pretty good RJ...
The problem is WX. When there are ATC delays--which SFO is of course infamous for--the regionals will be the first cancelled.
Originally Posted by
REPUBLIC757
If they are up-gauging small cities to mainline, maybe they are taking down frequency on EWR-LAX/SFO or ORD-SFO which has 14 flights a day on narrowbody aircraft

Not until the competition cuts back; IIRC, both of those are at such high frequency & capacity at the moment so as to try to drive away competition.