I dont know how far you have got with this but I dont think you will
have any luck in making this film.
I know for a fact that it will be very hard or impossible to HITCH or gain
access to the inner working of such an operation.
You have to remember that even STAFF who work for such Airlines
who hold a landside pass cannot access the airside part of the operation
I would also re-think the title of the film... What company would want to be associated with a film called... THE STOWAWAY... and have their A/C
shown behind the title.