It's very simple to get to Pucon from the airport in Temuco. Go to the travel desk and there is an agent at the Transfer Official on the far left. It costs $10.000 CP and you ride in a nice van to your hotel in Pucon. Returning to Temuco is a different story. You can take the JAC bus from Pucon and they will drop you at the Quepe stop just past the toll booth. There is no shelter, you are literally dropped at the side of the highway. From there we were able to get an Uber for the short ride to the airport. However - we had to cross the busy highway to have a place to stand and wait for the car. It's a bit harrowing. The other option is to try to book a shared van at the Gran Hotel in Pucon for $12.000 CP But they had just one going on a recent Sunday and the time didn't work for us. i don't know why the transport is so good from Temuco to Pucon and not the other way but that is how it is as of today.