Montgomery GI Bill is a different story. If you use the post 9/11 GI bill, you can use it for straight up flight training at a 141 school, for all ratings after the PPL. That's capped at $10k per year and not a good use of a GI Bill.

What I saw people doing is going to an aviation university, pursuing a professional pilot degree, and getting both tuition and flight labs paid for, in full, and receiving BAH at the e5 rate on top of that, and a book stipend. The "flight training" costs are part of the degree and not considered vocational, so there is no cap other than the cost of what is in the syllabus. That, my friend, is a windfall, depending on how they set it up. You can make it several hundred thousand dollars if you are efficient and go to a yellow ribbon school. If you already have a degree, and you enroll to get another bachelors in the professional pilot program and take nothing but flight labs, you don't burn much GI bill and they pay a lot for the few credit hours you take. I still have plenty of GI Bill left over to go get an MBA when this aviation career craps on me. And I still have over $50k in my flight account I have to give back to the VA bc my ratings were add-ons and I already had a lot of time, so I ripped thru them and didn't use that much. I could have got sea plane, glider/airplane/helo CFI and ATP, a bunch of joyrides, all paid for by the GI bill, and still would have had enough for a 2 year MBA. There are definitely better ways to use it now than when you did it, but it took some digging and a lucky assignment near one of these schools fornme to find out its true potential.