@garybrecka: One of the easiest ways I feel better when I travel is by skipping the in flight meal. On flights under five hours, I usually fast instead of eating. At altitude, your body is already dealing with lower oxygen levels and dehydration. Digestion requires a lot of energy, so I prefer to let my body focus on staying hydrated and maintaining steady energy rather than processing food. That doesn't mean fasting is right for everyone. If you have a medical condition, low blood sugar, or need to eat, listen to your body.