In one tour, the standard used to be ~1000 flight hours during your tour for helo and VP guys. It might be less for the VP guys and it's significantly less for helo guys now, but let's stick w/ 1000 hours to make the math easy.
In a 3 year tour, that's 26,280 hours. Let's assume you sleep 8 hours a day which leaves you with 17,520 hours awake. There's some weekends in there, but you also fly on weekends when deployed, so let's call it 78 weeks off, so that leaves 13,776 hours available to fly. So out of that, you get 1000 hours. So that's (very roughly) 7% of your tour that you actually spend flying.
The question is, are you sure it's the right business for you?
In a 3 year tour, that's 26,280 hours. Let's assume you sleep 8 hours a day which leaves you with 17,520 hours awake. There's some weekends in there, but you also fly on weekends when deployed, so let's call it 78 weeks off, so that leaves 13,776 hours available to fly. So out of that, you get 1000 hours. So that's (very roughly) 7% of your tour that you actually spend flying.
The question is, are you sure it's the right business for you?