Some suggestions:
- book a direct flight if you can to avoid having to deal with stopovers.
- give yourself plenty of time before your flight in case of any issues getting to the airport
- wear comfortable clothes.
- drink plenty of water and avoid alcohol if you can
- take plenty of things to on the plane, tablet, book etc
- book an aisle seat if you can. This is my personal preference
- move around the plane and stretch in your seat if you can
- talk to the flight attendants if you need help with anything
Does anyone have some other tips?