Numerous airlines offer good schedules into San Jose. Ideally you should arrive on a Friday sometime before 5:00 PM. You will be greeted at the airport by a Manzanillo representative and taken to the Costa Verde Inn for an over-night stay in Escazu, just outside of San Jose. The next morning you will be shuttled to the Dolphin Lodge in Manzanillo, a leisurely drive through an incredible Costa Rican country-side that takes about 4 hours.
It is also possible to be shuttled to the lodge the same day your flight arrives. We prefer a San Jose arrival of no later than 1:00 PM if you plan on going directly to the lodge.
Generally on Saturday you will be shuttled back to San Jose. You have the option to catch your flight that afternoon or stay over-night for a Sunday departure.