I saw a pic of an airplane interior with only one passenger visible. Will they fly with only one or two passengers?
Well, they wont for long.
I do know one thing though. If I were any of these airlines within the USA. I would wait a while and then start to fly flights from lessor airports to places like Vegas, and Laughlin NV, etc. A flight from Marquette Michigan, for example, once a week might do well.