Blah. So I think the only solution to those types of dreams is to be able to just leave everything behind, not worry, and just go catch the flight. Except, this is very hard when you aren't having a lucid dream. So you'd have to be able to do that in real life. Hm.
Anyway, I was riding on the T today, and I looked out the window. And there was this short animation playing of a preview to this cartoon movie! So apparently, a bunch of images were plastered in the tunnel where the T would pass by, flip book style (e.g. Aninmorphs, because you only ever read those books for the animations on the bottom corner of every page). I don't know why I didn't notice them before, but what a cool idea.