My favorite flight (of the four we typically take) is the one from Anchorage to Seattle. We generally travel mid-afternoon, and the light allows us to take advantage of the amazing views. The mountains in Alaska are truly breathtaking.
This flight is also the longest flight, which you would think makes it my least favorite, but the opposite is in fact true. The 3+ hour flight allows us to really settle in, put a movie on for the kids and relax ourselves for a little bit. It also gets us to the lower 48, which is a wonderful feeling. Something about being back on the road system provides me mental comfort.
I was surprised that none of the kids slept, but we were all so excited to get to Washington, I don't think I can blame them!