i used to do a lot of travel, including to asia every month, with a few companions.
we tried various things to see if we could recover faster.
what we found; any type of noise cancellation headphones, on flights over 4 hours or so, helped tremendously. with some caveats
the in ear ones hurt after about 4 hours or so, so that didnt work that well.
the on the ear type, like one of the bose units, worked fine until people started talking. that style of headphone made that type of noise worse since it blocked the engine drone, essentially magnifying the talking. so they were out.
the over the ear ones did the best job for us, and i still use the bose versions.
one other issue; the battery type. no matter how careful you are, you are going to leave the headphones on accidentally and run the battery down. so make sure you get one that allows you to switch out the battery quickly, and carry a spare or two.
i avoided the latest model bose because you cant recharge the battery while you are wearing it (per bose) so that takes it out of action.
good luck!