747 Airlines for me as follows in no order and with approx. numbers where I can remember :-
Swiss Air - 4 times
PAN AM - Approx. 6
TWA - Approx. 6 - mostly L1011 for my trips.
KLM - Around 4
BA - Lots
Lufthansa - still flying on them with LH 747 -8 - lots
Malaysian - Four times - like B Fraser did Langkawi return
JAL - Maybe 6
Singapore - Lots
American - only once, mostly DC10 for me
Wardair - only once
Air Canada - only once
CP Air - only once
SAA - Twice
Air France - Twice
Cathay - Lots
NW Orient - Lots
Peoples Express - Once as a student back in the day.
A nice A/C but I honestly prefer A380 as a passenger.
Cheers
Mr Mac