Originally Posted by
bennos
Are you sure you didn't search for today? LAX-JFK for 12/18 shows up as
DL476 J9/Y9 (K+ open)
DL16 J5/Y9 (V+ open)
DL862 J0/Y9 (L+ open)
DL2262 J0/Y9 (U+ open)
DL2362 J5/Y9 (V+ open)
DL1162 J0/Y9 (L+ open)
DL1262 J1/Y9 (S+ open)
Generally booking into H on delta.com, except for 1262. This is a typical pattern IME.
And clearly indicative that lots of people are buying cheap Y tickets rather than J outright

err...maybe I did search for today.... in any case, I would still expect some Diamond op ups. What this will certainly prevent is a FO or GM getting upgraded on a cheap ticket on a slow day....
Does anyone have data for typical loads for the transcons? How often they sell out?