When people said they were scared of flying or got airsick, I honestly could not believe it, I have flown to the US and Australia, no problem at all, but then I flew on a smaller friendship plane here in NZ from my city to Wellington about a 20 min plane ride, it was the worst I have ever experienced,the longest 20 mins of my life, I was petrified the whole journey, I had to appear brave as I had my then 8 year old son with me on his first flight.

There was quite a bit of turbulance, and the whole flight was ghastly, I have not flown since,and to be frank the thought of flying absolutely terrifies me now, so you have my utmost empathy, I have no suggestions, but others have given you some that will hopefully help, I hope the flight goes well and your fear is unfounded, good luck.