For the first time in many, many years, Louisville, KY has helicopter flight training at Bowman Field KLOU. Cardinal Wings Aviation is the flight school and there is one R22 with more planned for future. $200/hour dry (weird that it's dry rate, I know). Good for folks who want to fly a lot or have a custom training designed for them, as it's not super busy and schedule is usually wide open. And you can rent the helo after you get your rating. Website http://cardinalwingsaviation.com.
Disclaimer: I am affiliated with this flight school, but I did get my Commercial rotor add-on here last month!