This website provide all the info you need re: the Aguila Bus schedule as well as a shuttle option.
If you take the Aguila you need to get to the San Jose del Cabo bus depot in town as the bus doesn't go to the airport. You could take the local bus from the airport to town, and get off on the highway a block from the bus terminal. You'll see it on the San Jose del Cabo Map (#3)
thank you so much, this is really helpful
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