Help please - Airport Customs (Nonprofit Items)

Fly to San Diego. Get someone with a SENTRI or Global Entry card to drive you across the border at the San Ysidro or Otay Mesa Border Crossings in Tijuana. There is very small probability of being waved over by customs in a passenger car. Have them to take you or take a cab or Uber to the Tijuana airport. Fly directly to Zihuatanejo. Since it is a domestic flight, you will not have to go through the Zihuatanejo shakedown, ooops!, I mean customs.

Crossing by foot into Tijuana would incur a much greater probability of having to deal with customs.