I wouldn't say 'any flight' but most airliner delivery flights I know about from having a number of insider sources dotted across the globe. Most of the time I don't hear about them until they've departed but occasionally I find out about them before they take off which is useful. I make no promises though, I have a full-time job to do as well
I'll post anything (I think is) interesting if I hear about it.
Well consider this your new exciting, and voluntary... part time job! There is this L1011 supposed to depart from Texas to Africa (stopping somewhere, perhaps in florida) Any info on that would be greatly appreciated.