I can only provide hearsay. When I lived in NZ I knew someone who had their wisdom teeth removed in India. The flights for her whole family plus the surgery supposedly cost less than getting it done in NZ. I don't know how USA vs. NZ dental surgery pricing compares but I suspect that the US is higher from my experience with fillings and etc. (I didn't have insurance in NZ and the cost in the US with insurance seems similar.)
Personally, I'd be too anxious to have surgery overseas. Follow up would be difficult. I had a coworker who had his wisdom teeth out in his late twenties, last year, and more than 6 months later the gums still haven't healed over. He's been back several times. He had the surgery in the US but with a dental office I've had a personally bad experience with. Hopefully your requirements are less complicated/require less follow up.