I agree with you.
Nogales is one of Mexico largest cities WITHOUT schedule air services, only behing Cuernavaca and Pachuca.
Once, I used phone traffic to compare main trunks out of Nogales to other trunks with actual air links. It came to no surprise than Nogales-HMO
traffic was much larger than HMO
-CEN (which is even closer).
I offered this data to Aerolitoral planning staff and they were interested in serving Nogales from its hub in HMO
, but I think facilities were not useful.
Nogales was previously served by Aeronaves de Mexico. I have a copy of their 1958 schedule with services to Mexico City stopping in at least 5 or 6 cities.