Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast City Airport to San José, San José Province as you normally would.
San José Juan Santamaria Intl (SJO) is the airport you will fly into if you book a flight from Belfast City to San José. You should not have trouble finding flights to Juan Santamaria Intl from Belfast City; the airport handles an average of 0 inbound flights from Belfast City per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the San José airport from Belfast City. It is only a 8.8 mi journey from Juan Santamaria Intl (SJO) to San José’s city center.
When booking a flight from Belfast City Airport to San José, San José Province, you may want to consider flying on Air France, British Airways or KLM as they are the most popular for this route.