I would suggest you look for another solution.
Deal with the root cause instead and go on a fear-of-flying course. In the UK, where Vass is, both Virgin and British Airways run regular one-day courses at major airports, which include a short flight.
I went on the BA one some years ago and it was certainly money well spent as far as I am concerned; I'd given up flying completely. The Virgin course looks very similar in scope these days; previously they used simulators rather than an actual flight.
Senior pilots, cabin crew and a psychologist delivered the course as short lectures with time for questions and then small group talks. They certainly covered every angle I could think of: the science, safety measures, procedures (e.g. why planes reduce thrust after takeoff), effects on the body, mental and physical relaxation techniques.
In fact there was a questionnaire to fill in a couple of weeks in advance in which you could raise any particular issues you wanted to ensure were covered.
I hadn't been on a plane in years so getting on the flight in itself was a success. All the staff went on the plane and I think there was at least one for each 2 rows, so plenty of support. There was a continuous commentary from boarding to exit (about 45 mins) provided by an extra pilot on the flight deck, which explained all the manoeuvres in advance, e.g. "You will now hear a clunk as wheels retract "; "We've been cleared to turn 30 degrees right and go up to 10,000ft, so this will start in about 10 secs, we'll do it in two stages and it'll take about 2 mins".