smoking at iad (ua): two "rooms". one by gate c4 and one near gate d30 and if you have the time, avoid the one at c-4 from around 3pm-6pm as it is small with lousy ventilation and becomes a sardine can due ua's departing europe flights

smoking at phx (ua): the little walkway connecting to/from the ux "remote terminal"

sadly, the t6 outside smoking patio had been closed for over a year

there is also some good info from this thread over in the ua forum: http://www.flyertalk.com/forum/unite...ua-thread.html