If you are looking at someone else paying for your training, i.e. a cadetship than there is usaully a minimum educational requirement.
You'd also need for such a thing to exist! So don't worry about the educational requirement.
You can fly in the Army without becoming an officer, you'd need to be in it for a while though, I dn't think eligibility starts until you reach the rank of Corporal. It's another option for you.
Get your head down, work hard, save everything you can (and I mean work every hour you can - if you
really want this then you will), forget about going out to plebby clubs and look to start in 5 years. You'll be early 20s and in hopefully an improved economic climate.