Old Aug 14, 19, 10:21 am
  #6  
Gig103
 
Join Date: Nov 2013
Location: PHX, SEA
Programs: DL Silver, Avis President's Club, Hertz President's Circle, Global Entry (Former AA Plt/Gold)
Posts: 3,162
72hr is the earliest a GM can get C+ upgrades, but doesn't have to be right on the nose. If Delta thinks they can sell those seats through app upgrades or on Delta.com, they might and often do wait until check-in or even the gate to process upgrades.
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