Bose QuietComfort. I hate Bose for mimicking a high end audio company. But they got these right. While they are a little cartoonish in sonic presentation they are the right thing for travel. I have tried dozens of headphones, earphones, portable amps, portable DACs in every combination over a million miles in the skys. Just buy a pair, put them on when entering the airport… no music… turn on music from your iPhone when inclined… take off at destination.
The noise associated with flying destroys the detail and dynamics of high fidelity. The Bose are designed to deliver a satisfying although simplified rendition of reality in a highly silenced environment. They are incredibly comfortable. Look in Business Class… 1/2 the folks may have them. There is a reason.