Originally Posted by jsloan

It's likely you're just running into inventory constraints. Likely, those flights have sold better than projections, so they're tightening up inventory to see what sells. Domestic F fares are sold on a differential basis, so tight inventory in either cabin will result in higher F fares.


Obviously there's a glitch that's coming and going w.r.t. the display of P earnings. There are two logical hypotheses -- UA plans to stop awarding 200% for discount business class, or UA plans to use P as a P+ fare class, and P+ will earn 150%. Note that I'm not suggesting they'd downgrade current reservations -- they won't. Rather, they may remap existing P tickets into Z.

I don't think we have enough information yet to figure which of these two is more likely.