Im 2 months post op. I would say a month is when you start looking normal. You are still significantly swollen at that point(especially in the cheeks and around the lip/nose area) but most people wont notice. At 2 months I am starting to actually FEEL normal. I still have some cheek/lip swelling that fluctuates.
It is different for everyone though. I think my experience was more or less normal though based on reading a ton of blogs by other jaw surgery patients.