# What is the average temperature in the luggage hold of a passenger plane? [closed]

I am asking this seemingly odd question, as we'll have to transport some medicine in our luggage and it's supposed to be stored at temperatures between -8C and +2C. I'm not sure, if airport security will allow this to pass if this is in a cooling box as hand-luggage, although, in my opinion there shouldn't be a problem, as the ampules are 4 x 1 ml and I have a prescription (however, the cooling box will probably be treated as partially liquid containing).