I often fly long-haul Japan-Europe, 10 to 13 hour flights. These headphones reduce sound reasonably and is comfortable for up to four or five hours. After that there is a little discomfort from wearing them, and I generally switch to in-ear headphones. It is lightweight and folds up into a small size for carrying. Kensington Noise Canceling Headphones are much cheaper and probably a better buy, but I have not tried them.