I'll 2nd the aforementioned comments about A-Basin and Loveland. I go every year for about a week in late Nov - early Dec and am never disappointed. I can buy an plane ticket several weeks out and not watch NOAA obsessively to see if I'm going to be shutout. Also, you can buy a 4-pack from Loveland online for $120.00 w/no blackout dates. Awesome deal. A.Basin is equally a good deal at about $50-$60 (I don't remember exactly). Everything about it is good - I've got family in West Denver and these two resorts are relatively close, in the grand scheme of things.
Fortunately my work provides an ample amount of personal time and these annual trips are how I burn some of the time I'd otherwise lose at year's end. Typically, it's a great way to start the season and it's not too redundant because the hills close to home are just barely getting under way, if at all. That often would include NY and VT, although last year was an exception. I'm not sure about via JFK or LaGuardia, however, from Balt/D.C., non-stops to Denver are frequent and not too pricey ($300-$350 if planned right). Love the non-stops because I think I'll most likely end up in the same city as my gear. All this is getting me stoked - think I'll check out Southwest flights right now. Thanks Queequeg!