When I was on my way shopping to Zacapu, Mexico, I found a small airport on the way. I also checked Google Earth and found the runway. I don't know if the airport is ever open, but I was wondering if it will open operations. If it does, I bet Aeromar would fly there from MEX
or MLM. I heard that Aeromar also flies to Lazaro Cardenas, which has a small airport as well. Try looking at Google Earth if you installed it if you want to see it.