Have flown LTN-WAT twice & LTN-GWY once in the last three months and the aircaft were completely full each time. I understand both routes are very successful for AA. Whether twice daily ops throughout the winter, especially on a ATR72, is a bit too much, i'm not sure. Certainly I believe an earlier departure from GWY to LTN allowing earlier flights back to WAT & GWY would be beneficial. Flights at present at 17.00 & 21.25 LTN-GWY are not ideal.