UA has taken FAT-DEN up and down in the past couple of years, sometimes they have 2 flights sometimes 3.
Meantime AA has managed to pull eastbound traffic out of FAT (people looking to avoid SFO/LAX) by adding an additional FAT-DFW this year. AWX now says the 700s will start on FAT-PHX in the next few weeks growing to 3 out of the 5 RTs by year end, adding more seats for eastbound conx out of FAT. Allegiant added a FAT-LAS this year, which I understand is seeing some pax connecting to other airlines at LAS for cheap fares.
Fresno continues to show pax counts above last year, unlike many other cities around the country. Business travel here is not as high yielding as other cities but seems to be a little more recession proof. (For example the local unemployment rate has actually been almost the same the last few years). Add in increased leisure travel rates and the region holds potential for the next few years for airlines.
So maybe UA is finally deciding to stake a claim and rebuild the market. At one point about 12 years ago they had 4 737s a day on FAT-DEN. We may not see that again for many years but these additional seats will be nice.
"Travel is fatal to prejudice, bigotry, and narrow-mindedness." - Mark Twain