Right, but I'm only thinking of SFO-ONT. Does anyone other than UA fly this route? UA acts as if it can ignore OAK and SJC when setting SFO pricing (see all the threads about SFO-LAX/BUR/ONT/SAN/SNA being more expensive than SFO-SIN/NRT/BKK/PVG/LHR/FRA/MUC/just about anywhere else UA flies) and I don't think anyone else flies SFO-ONT.

If we do bring OAK into the mix, there is still more competition for Bay Area-SNA than there is for Bay Area-ONT. As Channa mentioned, both AS and WN fly OAK-SNA. Only WN flies OAK-ONT. Less competition should equal higher fares. Apparently, SNA can support the higher fares even with competition from AA, WN and AS.