1. Bring a comfortable pillow. For some reason planes put me to sleep almost instantly. I can be asleep before the plane takes off in most cases. 2. Dress casually and light. I hate being hot. I like to be able to stretch and move around comfortably. I don't mean you have to wear your pajamas on the plane, but a comfortable pair of pants and light shirt can make all the difference. 3. Normally I like a window seat, but on a longer flight I usually try to get an aisle seat. It makes getting up and down a lot easier to stretch and walk the aisle from time to time. 4. Bring snacks. 5. Depending on how much you fly and if you have elite status, go for the upgrade if you are able. 6. I usually try to bring an assortment of things to do (i.e. work, movies, books, etc..). That way if I get bored with one thing or finish something I can move onto something else. 7. Depending on your flight, you can try to hack your way into getting the seat next to you empty. There are several ways to do this and really depends on the airline, the flight, the time of flight, the type of plane, etc.. You can Google different hacks you can try.