Is anybody aware of any tools that allow to input a starting airport, mileage requirement, plus bonus miles and give me airports to fly too, to get the required miles? Ideally even with a pricing option.

So let's say I need 63000 miles, I'll get 100% elite bonus, and there is a promo for 7000 miles going, and I'm starting at DFW now the programm will give me routings to several airports with prices which would yield the miles.