Bus from Zihua to Guad airport or la Central

Sorry if this has been asked but running out of battery and left charger at Airbnb I left today. Either get mine back or buy new one but little juice left

I am in Morelia, tired of crowds and noise so thinking of heading to beach for some relaxation. Thought instead of returning to Morelia I could go directly to Guad or airport. many hanks.
Barb