I completely understand UA offering more benefits to GS vs 1K. That said, I get frustrated when I see flights like this. Why PN7 and PZ0? Is the 1K really worthy of zero upgrade benefits, while the GS gets access to 1/4 of the J cabin? I completely understand PN2/PZ0 or PN6/PZ4...but I can't understand PN7/PZ0. Seems completely arbitrarily. Is there some logic to this or simply a poorly written algorithm on the part of United IT? BTW, the flight is completely empty in J right now! SFO-BOS in late August...


Any sense of how often this brilliant algorithm refreshes? Weekly, daily?