First aircraft I flew in was a Canadian Airforce B707 - as a wee tyke on my parents lap 1970 from Ottawa to Vancouver. First commercial aircraft I remember taking was a B747 operated by Canadian Pacifc from Vancouver to Toronto in 1979. I suppose I don't really 'remember' it as such, more recall that the parental units had taken a photograph of me in front of a window at the departure gate with the aircraft in the background.
Best flight ever - Sitting in the cockpit jump seat of an Airforce B707, just behind the pilot from takeoff in Edmonton (Namao?) to landing at YVR. This was just before they were retired in favour of the Airbus so must have been early 80s (for some reason, I can't remember the year).
cheers, MWAC