Most travelers, moneyed or budget, come into Mexico via Cancun, Mexico City, or Puerto Vallarta. For the first and third options, you probably won’t want to stick around there too long if you’re traveling on the cheap. There are greener pastures—or perhaps I should say brighter beaches—down the road. So if you head to PV on the west coast, eventually you’ll probably end up at the Puerto Vallarta bus station. There are some grand and impressive bus stations in Mexico, but this isn’t one of them. The Puerto Vallarta bus depot is kind of sad and rinky-dink. Plus the buses

           

Source: Cheapest Destinations