I am starting to think this is impossible. I am looking to use some miles to go to Vegas for a long weekend. I've got miles on DL and US, which means I can also fly on UA, CO or NW. I live near Newark and would love to fly out of there, but am willing to fly out of LGA, JFK or even PHL. I've been looking to fly out on Thu Jun 24 and return on Jun 27, but there is NOTHING available on any of those airlines from any of those airports. I have also checked for random other weekend throughout the summer, with similar results. What gives?

Is it just impossible to use miles to go to Vegas? Do I need to plan this a year in advance? Or does it have to be at the absolute last minute? If anybody has had any success with using FF miles from the New York area to Vegas, I would love to get some advice. Thanks!