If you're going to Memphis:
They usually fly later in the day. I think regularly they do 2 flights a day, one leaving around 3pm AKDT and another leaving soon after that (roughly 30-50 minutes later). Last week though, they flew 5 flights on Thursday and 6 on Friday. It's harded to determine flight numbers on this but I think it would be FDX 94 and FDX 28.
If you're going to Oakland, Newark, Ft. Worth there is probably only 1 flight a day scheduled (if necessary they'll fly more but I wouldn't count on it now):
to Oakland - leaving around 4:45pm AKDT (FDX86)
to Newark - leaving around 3:50pm AKDT (FDX92)
to Ft. Worth - leaving around 3:45pm AKDT (FDX5092)
These are the paths that most iPad's took last week once they cleared customs in Anchorage. From reading this forum it seems like there were larger quantities being shipped last week so I'd guess it is less likely they'll add additional flights. And I'm also not sure if it will affect whether everything will go through Memphis now or they'll continue to route through the other smaller hubs (ft. worth, newark, oakland).
Thanks for looking out, Ebes1099!