This was a huge concern for me as I was debating between flat and curved screens. I decided on the flat screen because, in the store, the viewing angle seemed a bit larger. Where this TV is located there are seats along most angles from 90 degrees (straight on viewing) to about 160 degrees (practically viewing from the side). Now, while I am not saying that this is an ideal viewing angle, it is more than acceptable, even when viewing 3-D content. I would say that anything more than 160 would be distracting. 90-140 degrees seems ideal.