You can start by flying into Southern California then do a midweek day trip to Mountain High ,2 hour from about every where in Los Angeles. The weather is pretty predictable and they will have a lot of man made snow, although I had rare snow date at the end of December 2012 which was really good. You ski in and ski out of your car.
Jesus christ PLEASE do not fly all the way from New Zealand to ride at fucking Mt High...
is this what you want to ride?