I was booked on this flight and UPG Friday into F and had to cancel Saturday midday. When I cancelled, seat map showed about 9 open seats and 4 standbys.
Either the 65 CLE folks were already rebooked Saturday or even earlier and UA just MX the DEN connection knowing the CLE fans would not make it to SAN until 6:30 at a minimum or I call shenanigans on this whole last minute rebook. There is no way 65 CLE folks make it on this weekly red eye late notice, no way. I do this glorious route about about 35 weeks a year. It's always full without the CLE folks.