I was in a plane leaving Phoenix, heading to the Northeast. We were about 30-45 mins from the Phoenix Airport around 4:15pm, going over nothing but desert, when I noticed something flying down there, hovering not too far above the ground. I thought at first it could just be a bird because it was sort of the shape of a bird, but then I remembered how small cars look from way up in a plane so I realized that the object was definitely the size of another guy plane or a small house. The sun caught it for a moment and I could see that it was definitely made of metal, silver in color, heading West. I can’t think of any human technology that can fly a couple hundred feet above the ground like that…and there wasn’t a town for many many miles around either. I believe I spotted a UFO from my flight!