Returning from a trip, flying from san fransisco to georgia about an hour or so into our trip, i noticed some lights flickering off in the distance high above the clouds, just north and a little below our altitude. first i noticed one large light sort of moving towards the east which quickly became several lights, maybe 5 or more, which were also moving towards the east, but not as fast as we were moving. then i also noticed another light, which appeared to be a little closer to us, but not as bright as the others, which were farther away. when i first noticed the lights i thought that it was a reflection from a building, but it was too high! then i thought it may be reflections from another airplane but they were not moving that fast and they were a cluster of lights. i took my cell phone and started recording the lights that soon started fadeing away as we passed the area. i was left totally bewildered on what those lights could have been, i had seen other jets fly past us at one point or another and none of them appeared as lights in the sky did and the fact that we were flying somewhere in the southwestern united states left me rather exited of what the possibilities could be.