I found this article on Tripso about etiquette for air travel. My favorite tip is to avoid grabbing the seat back in front of you when crawling out of your aisle. I been on the receiving end of that too many times.
Another tip is somewhat controversial – the author says to avoid reclining if possible. With my back problems, I use the option whenever the urge strikes with certain exceptions – say, when I’m in one of those teeny 3 seats per row planes and the person behind me is over 5’8″ or when the person behind me is an obviously pregnant woman. Apparently some people think it should be avoided at all costs, but that extra inch or two helps me so much. I even check SeatGuru whenever I’m booking to make sure that I don’t book a seat that doesn’t recline. According to a bunch of websites, OSHA recommends reclining, so I must not be crazy. What do you think about reclining your seat?
Image from Laptop Egronomics.