Originally Posted by
mozilla
How would this work if D-7 and J is empty and PE has 1 seat left, what should the availability look like?
Well that's really UA's call. And it seems to me you're already describing an anomalous situation, because they should not ordinarily be in that situation . . . if they are, PE is cannibalizing J, as opposed to commanding a premium over Y, which is the whole point of offering a PE product. But if they're really down to O1, then I would think it should get last seat pricing, regardless of the J load.
If in practice UA is able to routinely sell out PE at a price that's higher than their available P or Z inventory, well more power to them. If they're able to do that, I presume they'll sell O all day long at full fare, and just op-up into J. But color me skeptical that's how this will play out. What I think is far more likely in these early days of PE is the J cabin will continue to sell as it more or less historically has, and the PE cabin will remain empty unless/until UA makes a reasonable amount of discount inventory available, particularly on flights where Z and P are still for sale.