3/10/16 DFW-SEA AS 667 MVPG 75K + 75K companion. Cleared about 86 hours out.
Seems like a small miracle given that only one F seat was for sale at the time, but at about the 120 hour mark it was F4 U3. Still one F seat for sale after clearing. Maybe those U seats were held back at that point and then a sweep did the actual clearing later.