| Cheap Flights: San Antonio to San Jose, Costa Rica $272 r/t [April-May] â United United has round-trip flights from San Antonio (SAT) to San Jose, Costa Rica (SJO) for $272 with a connection. Flights April to May. Weekends available. Costa Rica has additional entry requirements due to COVID. You must complete the online Health Assessment and you must purchase travel insurance. Details on this process is on visitcostarica.com. Click for more details and booking links Cheap Flights: San Antonio to San Jose, Costa Rica $272 r/t [April-May] â United . | 
