the route would be through Compostella right?
coming from Bucerias going through Ixtapa would the best thing to do would be to turn right east of Ameca, follow towards San Martín de Hidalgo and turn left on hwy 80 just before El Crucero de Santa María. Follow Hwy 80 to Acatlán de Juárez, stay in the left lane (hwy 54) to bypass Acatlán de Juárez. Follow 54 till you get to hwy 15 (heading south) and as you get close to Jocotepec take the right fork to Chapala, head towards Jaltepec and on towards Ajijic.
i never thought of that, there is an airport near ajijic?