FlyerTalk Forums - View Single Post - Do upgrades clear exactly at flight time 5/3/1 days before flight?
Old Mar 20, 2012 | 7:49 pm
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javabytes
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Upgrades begin clearing at 5:00 PM Eastern time at 6, 4, and 2 days before departure for DM/PM, GM, and FO, respectively. The sweep can take several hours to run. Also note the time you receive the "You've been upgraded" email is not the time you actually clear, but minutes to hours later.

This all assumes there is V inventory at the window. If not, upgrades will not clear, of course.
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