Check out these airplane headrests! When did we start thinking that having our head 3" in front of our torso was a good idea!? We need to stop working our way down the evolutionary chart.
Thankfully, the Travel Buddy has straps long enough to go around an airplane seat, or it can just be positioned behind your torso if you don't want to clip it around. This will fill the space between your low back and your head to allow you to sit up straighter.