There are no shuttle services directly from the SJO or LIR airports. For visitors arriving to SJO and wanting to schedule a shuttle, the meeting spot is at the Calalu Restaurant, which is located about 5 minutes away from the airport. You will need to take a taxi to get there, and it should cost approximately $4 USD.
The Liberia airport meeting place is at the Best Western El Sitio, which is located about 15 minutes away from the airport. The cost for a taxi ride there is about $15 USD.