If it wasn't constant it could of been when the aircraft was changing altitude or turning, this sometimes has a confusing effect on your sense of motion, because your sitting still but the fluid in your ears is telling your body you are moving-The dizzyness is your brain trying to work out what the hell is going on.

Alternatively you could of had a slight or the onset of a cold, this sometimes causes dizzyness or sickness, and the last and unlikely reason there could of been a slight fault within the air pressure of the cabin. The Human body can be a lot more sensitive to changes than any measuring device.

To give it a technical name - vertigo!

This is very interesting because I have to confess the last 2 flights I have taken I have had a dizzy/sick feeling . It only lasted for a few minutes . I came over all faint and feel the colour drain from my face . I lean forward and try and focus on gulping at my water and it eventually subsided but im now worried about future flights and now thinking about it will probably make it worse. god forbid I may get to the point I wont be able to fly . now that would put a halt on my holiday spending

Im wondering if its possible that I have been carrying a slight ear infection of something along similar lines for a while

Does that sound like Vertigo?

Symptoms of vertigo can be found Here

Dave

thanks for the replys very interesting in what you all say