On Feb 24, 7:59 pm, "Andrew Sarangan" wrote:
Most of the software out there will compute a flight based on the
user's route, time of departure and altitude. This is a fairly
straight forward task which could be done without a computer, as has
been the case for decades.

What I am looking for is the reverse. Given a destination, aircraft
type and a window of travel time (which could be a couple of days),
the software should come up with the best altitude, route and time of
departure. It should consider forecasted winds aloft, frontal
positions, icing potentials, turbulence and thunderstorms. The user
should be able to attach numeric weights to indicate the level of
importance to each factor. In other words, it should be a minimization
software considering a variety of decision matrix. At present I do
this by recomputing the flight for each scenario. This does get very
cumbersome, and is best done with an automated algorithm. If such a
thing exists, I would like to hear opinions.

Have you looked at Seattle Avionics Voyager? I don't have the full
version, but I think it will do most of the things you want. Even in
the free version (the one I have) you can easily test different
departure times and altitudes to optimize your time enroute. They
have a 30 day free trial to try out the more advanced features.