I've heard about the city bus number 11 going from M'Hamid district to the bus station at Bab Doukkala and stopping near the airport (however not directly at the terminal). This seems to be the cheapest means of transport from the airport to the city center, just 4 Dh one-way.
Has someone used this line recently? Is there is something like a timetable for this line available online? How frequent does it run? Where is the bus stop exactly located near the airport? At the roundabout? Can the tickets be bought directly from the driver? Any information would be appreciated!