If you buy a pair of noise-canceling headphone (Bose, Sony, Panasonic), you will get all the needed different connecting jacks including the one pictured in this thread for use on airplane.

Alternatively, you can just ask in a Bose store and ask them if they could sell you the jack pictured above. That’s what I did in San Francisco last month because I had forgotten mine on the plane (they gave me two, free of charge).