Originally Posted by
MalNSF
I am just curious - if you already have a seat assignment and don't want to upgrade, what is the benefit to them to have you check in on line
Virtually everyone (unless by skimming over the thread I missed/misinterpreted someone's answer) explained why it's beneficial to US (the passenger)... which is really fairly obvious. But the OP asked why it's beneficial to THEM (as in, to United).