I am the exact opposite. I can conk out in a widebody jet but the domestic jets just feel too claustrophobic. I do tend to doze off here and there but on international flights I can get several hours at a time. The free booze helps as well.
Alcohol and Benadryl. Its worth noting that I never feel like Iβve slept. To me it feels like I am just hovering on the edge of sleep the entire time, but my wife says I do sleep for a solid hour or two at a time.
Itβs obviously bofa