Flying

A short flight isn't so bad, for me. Less than three hours, say. The worst parts for me is the carrying of bags, the driving, the parking, the shuttle, the stress of security.. And then, all these mostly in reverse.

Longer flights are much harder.

Bring what you need to be comfortable.
Earplugs
Hydrate
Sweater or lite coat
Nuts or fruit
Painkillers.

Don't plan anything else the day you travel.