I actually disagree with a lot of people here. I don't mind that they never used flying, and I don't mind that they want to wait till the last episode, but the power has lost all of its magic and appeal. Instead of building to the last episode and Clark realizing "Holy ****, I can fly!", with Kara flying around, Clark has become the only kid in the class who doesn't know how to read. Every single person who knows Clark's secret knows now that he will eventually be able to fly. Instead of an awe-inspriing moment, it'll be more like, "Jesus, its about time you started flying." No magic.