Noise-canceling headphones are a must to listen to the entertainment system on the aircraft or even your own tunes. Some people pack bulky Bose but I have found the Sennheisers to be perfect - lightweight, small, have a travel pack to keep them in plus a set of adapters for the various airlines. The single AAA battery lasts around 40 hours of flight listening time.
The Sennheiser PXC 250 II Collapsible Noise-Canceling Headphones allow you to take off and then lose yourself completely when flying. Thanks to high-performing neodymium magnets, the PXC delivers a powerful, detailed sound with a wide frequency response,