To have the most comfortable flight, you should buy business class tickets because in economy class there is very little space between the seats which restricts normal motion on the body. This situation impairs blood flow, which can make you feel cramped and enhance your fears.
To thin out the blood, doctors recommend taking aspirin before a flight.However, if you are suffering from a serious illness, it is best to consult a a doctor before the flight.
Do not hesitate and take off your shoes. Wear thick socks or slippers. Periodically move your feet and stretch. At least once an hour get up from the chair and warm up or move your arms and legs.
Try not to think about the flight, bring a good book, magazine or a laptop with movies.
Before the flight, try not to overeat and do not drink soda. Take plain water or juice and drink as much as possible.
If you wear contact lenses, it is better to take them off and put on your glasses before the flight.
If possible, try to sleep. It will make you more comfortable. Take a special pillow for the flight which will support the head and neck to stop them from becoming numb during lengthy flights.
Avoid drinking alcohol as it causes the blood vessels to dilate during the flight. Also, alcohol might enhance your fears and make things worse for you.
During take-off and landing you can face ear popping problems by chewing gum. Yawn frequently, to avoid unpleasant sensations in the ears and mouth.