Or four times for a 51 min album... But I really wanted demon days for the cover art. Its very annoying to have to get up every 12-15 mins though and I'm super mad that they had to press all four sides.
edit: I'm too tired, you only need to flip it three times too. Technically only twice, but taking out the discs is more hassle than flipping them, so it def. Feels like four times.