70

We've seen him at different ages at different points in his life. I didn't read it but I heard he died in Cable/Deadpool. So Technically he's dead...... or not even born yet. 

He has had one jacked up life

" so, what if the cable that originally traveled back in time was from after he raised hope? "

He's about twenty, haha!

Did he not get transformed into a baby at one point in the Cable/Deadpool series? I could have sworn he was also younger in Revolution in may of 2000 or some such. It has been a long time. In any case, I would say he is older than his body is. 

technically speaking in this timeline hed be about the same age as franklin richards, but physically id say late 50s

 i say he is a robust 50 yr old  thats including the marvel time scale that effects only him and no one else in marvel thats b4 the hope  thing.

I would say he's around sixty-five, if not more, by now. He was quite old when he first appeared, and given that he's been with Hope for at least sixteen plus years by now, that's about twenty years in total.

no way id say 40-45